PlantArchitecture Class Reference

Public Member Functions
	PlantArchitecture (helios::Context *context_ptr)
	Main architectural model class constructor.
	~PlantArchitecture ()
	Destructor - cleans up internal CollisionDetection instance if owned.
void	optionalOutputObjectData (const std::string &object_data_label)
	Add optional output object data values to the Context.
void	optionalOutputObjectData (const std::vector< std::string > &object_data_labels)
	Add optional output object data values to the Context.
void	loadPlantModelFromLibrary (const std::string &plant_label)
	Load an existing plant model from the library.
std::vector< std::string >	getAvailablePlantModels () const
	Get list of all available plant models in the library.
uint	buildPlantInstanceFromLibrary (const helios::vec3 &base_position, float age)
	Build a plant instance based on the model currently loaded from the library.
std::vector< uint >	buildPlantCanopyFromLibrary (const helios::vec3 &canopy_center_position, const helios::vec2 &plant_spacing_xy, const helios::int2 &plant_count_xy, float age, float germination_rate=1.f)
	Build a canopy of regularly spaced plants based on the model currently loaded from the library.
std::vector< uint >	buildPlantCanopyFromLibrary (const helios::vec3 &canopy_center_position, const helios::vec2 &canopy_extent_xy, uint plant_count, float age)
	Build a canopy of randomly scattered plants based on the model currently loaded from the library.
ShootParameters	getCurrentShootParameters (const std::string &shoot_type_label)
	Get the shoot parameters structure for a specific shoot type in the current plant model.
std::map< std::string, ShootParameters >	getCurrentShootParameters ()
	Get the shoot parameters structure for all shoot types in the current plant model.
std::map< std::string, PhytomerParameters >	getCurrentPhytomerParameters ()
	Get the phytomer parameters structure for all shoot types in the current plant model.
void	updateCurrentShootParameters (const std::string &shoot_type_label, const ShootParameters &params)
	Update the parameters of a single shoot type in the current plant model.
void	updateCurrentShootParameters (const std::map< std::string, ShootParameters > &params)
	Update the parameters of all shoot types in the current plant model.
uint	addPlantInstance (const helios::vec3 &base_position, float current_age)
	Create an instance of a plant.
uint	duplicatePlantInstance (uint plantID, const helios::vec3 &base_position, const AxisRotation &base_rotation, float current_age)
	Duplicate an existing plant instance and specify its base position and age.
void	deletePlantInstance (uint plantID)
	Delete an existing plant instance.
void	deletePlantInstance (const std::vector< uint > &plantIDs)
	Delete multiple existing plant instances.
void	setPlantPhenologicalThresholds (uint plantID, float time_to_dormancy_break, float time_to_flower_initiation, float time_to_flower_opening, float time_to_fruit_set, float time_to_fruit_maturity, float time_to_dormancy, float max_leaf_lifespan=1e6, bool is_evergreen=false)
	Specify the threshold values for plant phenological stages. All time values have units of days.
void	setPlantCarbohydrateModelParameters (uint plantID, const CarbohydrateParameters &carb_parameters)
	Sets the carbohydrate model parameters for a specific plant.
void	setPlantCarbohydrateModelParameters (const std::vector< uint > &plantIDs, const CarbohydrateParameters &carb_parameters)
	Sets carbohydrate model parameters for specified plants.
void	disablePlantPhenology (uint plantID)
	Disables the phenological progression of a specified plant instance.
void	advanceTime (float time_step_days)
	Advance plant growth by a specified time interval for all plants.
void	advanceTime (int time_step_years, float time_step_days)
	Advance plant growth by a specified time interval for all plants.
void	advanceTime (uint plantID, float time_step_days)
	Advance plant growth by a specified time interval for a single plant.
void	advanceTime (const std::vector< uint > &plantIDs, float time_step_days)
	Advance plant growth by a specified time interval for a specified set of plants.
void	adjustFruitForObstacleCollision ()
	Adjust fruit objects to prevent collision with solid obstacles via rotation.
void	accumulateHourlyLeafPhotosynthesis () const
	Accumulates hourly net photosynthesis for each leaf in the plant architecture.
void	defineShootType (const std::string &shoot_type_label, const ShootParameters &shoot_params)
	Define a new shoot type based on a set of ShootParameters.
uint	addBaseStemShoot (uint plantID, uint current_node_number, const AxisRotation &base_rotation, float internode_radius, float internode_length_max, float internode_length_scale_factor_fraction, float leaf_scale_factor_fraction, float radius_taper, const std::string &shoot_type_label)
	Define the stem/trunk shoot (base of plant) to start a new plant. This requires a plant instance has already been created using the addPlantInstance() method.
uint	appendShoot (uint plantID, int parent_shoot_ID, uint current_node_number, const AxisRotation &base_rotation, float internode_radius, float internode_length_max, float internode_length_scale_factor_fraction, float leaf_scale_factor_fraction, float radius_taper, const std::string &shoot_type_label)
	Manually append a new shoot at the end of an existing shoot. This is used when the characteristics of a shoot change along its length (e.g., from a unifoliate to trifoliate leaf).
uint	addChildShoot (uint plantID, int parent_shoot_ID, uint parent_node_index, uint current_node_number, const AxisRotation &shoot_base_rotation, float internode_radius, float internode_length_max, float internode_length_scale_factor_fraction, float leaf_scale_factor_fraction, float radius_taper, const std::string &shoot_type_label, uint petiole_index=0)
	Manually add a child shoot at the axillary bud of a phytomer.
uint	addEpicormicShoot (uint plantID, int parent_shoot_ID, float parent_position_fraction, uint current_node_number, float zenith_perturbation_degrees, float internode_radius, float internode_length_max, float internode_length_scale_factor_fraction, float leaf_scale_factor_fraction, float radius_taper, const std::string &shoot_type_label)
	Manually add a child epicormic shoot (water sprout) at an arbitrary position along the shoot.
int	appendPhytomerToShoot (uint plantID, uint shootID, const PhytomerParameters &phytomer_parameters, float internode_radius, float internode_length_max, float internode_length_scale_factor_fraction, float leaf_scale_factor_fraction)
	Add a new phytomer at the terminal bud of a shoot.
void	enableEpicormicChildShoots (uint plantID, const std::string &epicormic_shoot_type_label, float epicormic_probability_perlength_perday)
	Enable shoot type to produce epicormic child shoots (water sprouts)
void	disableInternodeContextBuild ()
	Do not build internode primitive geometry in the Context.
void	disablePetioleContextBuild ()
	Do not build petiole primitive geometry in the Context.
void	disablePeduncleContextBuild ()
	Do not build peduncle primitive geometry in the Context.
void	enableGroundClipping (float ground_height=0.f)
	Enable automatic removal of organs that are below the ground plane.
void	enableSoftCollisionAvoidance (const std::vector< uint > &target_object_UUIDs={}, const std::vector< uint > &target_object_IDs={}, bool enable_petiole_collision=false, bool enable_fruit_collision=false)
	Enable collision detection for plant growth avoidance (creates internal CollisionDetection instance)
void	disableCollisionDetection ()
	Disable collision detection for plant growth and clean up internal CollisionDetection instance.
void	setSoftCollisionAvoidanceParameters (float view_half_angle_deg, float look_ahead_distance, int sample_count, float inertia_weight)
	Set collision avoidance parameters.
void	setStaticObstacles (const std::vector< uint > &target_UUIDs)
	Mark specific geometry as static for collision detection efficiency.
CollisionDetection *	getCollisionDetection () const
	Get access to the internal CollisionDetection instance (for advanced usage)
void	setCollisionRelevantOrgans (bool include_internodes, bool include_leaves, bool include_petioles, bool include_flowers, bool include_fruit)
	Set which organ types should participate in collision detection.
void	enableSolidObstacleAvoidance (const std::vector< uint > &obstacle_UUIDs, float avoidance_distance=0.5f, bool enable_fruit_adjustment=false, bool enable_obstacle_pruning=false)
	Enable solid obstacle avoidance for plant growth.
void	setGeometryUpdateScheduling (int update_frequency=3, bool force_update_on_collision=true)
	Configure Context geometry update scheduling for efficiency.
void	enableAttractionPoints (const std::vector< helios::vec3 > &attraction_points, float view_half_angle_deg=80.0f, float look_ahead_distance=0.1f, float attraction_weight=0.6f)
	Enable attraction points to guide plant growth toward specific targets.
void	disableAttractionPoints ()
	Disable attraction points and revert to natural growth.
void	updateAttractionPoints (const std::vector< helios::vec3 > &attraction_points)
	Update attraction points positions (overwrites existing points)
void	appendAttractionPoints (const std::vector< helios::vec3 > &attraction_points)
	Update attraction points positions by appending to any existing points.
void	setAttractionParameters (float view_half_angle_deg, float look_ahead_distance, float attraction_weight, float obstacle_reduction_factor=0.75f)
	Set attraction parameters.
void	enableAttractionPoints (uint plantID, const std::vector< helios::vec3 > &attraction_points, float view_half_angle_deg=80.0f, float look_ahead_distance=0.1f, float attraction_weight=0.6f)
	Enable attraction points for a specific plant.
void	disableAttractionPoints (uint plantID)
	Disable attraction points for a specific plant.
void	updateAttractionPoints (uint plantID, const std::vector< helios::vec3 > &attraction_points)
	Update attraction points positions for a specific plant (overwrites existing points)
void	appendAttractionPoints (uint plantID, const std::vector< helios::vec3 > &attraction_points)
	Append attraction points for a specific plant.
void	setAttractionParameters (uint plantID, float view_half_angle_deg, float look_ahead_distance, float attraction_weight, float obstacle_reduction_factor=0.75f)
	Set attraction parameters for a specific plant.
bool	detectAttractionPointsInCone (const helios::vec3 &vertex, const helios::vec3 &look_direction, float look_ahead_distance, float half_angle_degrees, helios::vec3 &direction_to_closest) const
	Detects attraction points within a viewing cone from a given position.
bool	detectAttractionPointsInCone (const std::vector< helios::vec3 > &attraction_points, const helios::vec3 &vertex, const helios::vec3 &look_direction, float look_ahead_distance, float half_angle_degrees, helios::vec3 &direction_to_closest) const
	Overloaded version that accepts attraction points as a parameter (for plant-specific attraction points)
void	initializeCarbohydratePool (float carbohydrate_concentration_molC_m3) const
	Initializes the carbohydrate pool for all shoots of all plant instances.
void	initializePlantCarbohydratePool (uint plantID, float carbohydrate_concentration_molC_m3)
	Initializes the carbohydrate pool for a specific plant.
void	initializeShootCarbohydratePool (uint plantID, uint shootID, float carbohydrate_concentration_molC_m3)
	Initializes the carbohydrate pool for a specific shoot of a plant.
void	setPhytomerLeafScale (uint plantID, uint shootID, uint node_number, float leaf_scale_factor_fraction)
	Adjusts the leaf scaling factor (length as a fraction of its maximal length) for a specific phytomer on a plant shoot.
void	setPlantBasePosition (uint plantID, const helios::vec3 &base_position)
	Sets the base position of a plant with the specified ID.
void	setPlantLeafElevationAngleDistribution (uint plantID, float Beta_mu_inclination, float Beta_nu_inclination) const
	Sets the leaf elevation angle distribution for a specific plant.
void	setPlantLeafElevationAngleDistribution (const std::vector< uint > &plantIDs, float Beta_mu_inclination, float Beta_nu_inclination) const
	Sets the leaf elevation angle distribution for a list of plants.
void	setPlantLeafAzimuthAngleDistribution (uint plantID, float eccentricity, float ellipse_rotation_degrees) const
	Sets the azimuth angle distribution for plant leaves.
void	setPlantLeafAzimuthAngleDistribution (const std::vector< uint > &plantIDs, float eccentricity, float ellipse_rotation_degrees) const
	Sets the azimuth angle distribution of plant leaves.
void	setPlantLeafAngleDistribution (uint plantID, float Beta_mu_inclination, float Beta_nu_inclination, float eccentricity, float ellipse_rotation_degrees) const
	Sets the leaf angle distribution (both elevation and azimuth) for a specific plant.
void	setPlantLeafAngleDistribution (const std::vector< uint > &plantIDs, float Beta_mu_inclination, float Beta_nu_inclination, float eccentricity, float ellipse_rotation_degrees) const
	Sets the leaf angle distribution (both elevation and azimuth) for a list of specified plants.
void	setPlantAge (uint plantID, float current_age)
	Don't use this.
void	harvestPlant (uint plantID)
	Harvests a plant by removing all leaves and fruit.
void	removeShootLeaves (uint plantID, uint shootID)
	Removes all leaves from a specified shoot in a specified plant.
void	removeShootVegetativeBuds (uint plantID, uint shootID)
	Removes all vegetative buds from a specified shoot in a specified plant.
void	removePlantLeaves (uint plantID)
	Removes all leaves from the plant with the specified ID.
void	makePlantDormant (uint plantID)
	Makes the specified plant enter a dormant state.
void	breakPlantDormancy (uint plantID)
	Breaks the dormancy of all shoots in the specified plant.
void	pruneBranch (uint plantID, uint shootID, uint node_index)
	Prunes a branch from a specific plant at a designated node index.
std::string	getPlantName (uint plantID) const
	Retrieves the name of the plant associated with a given plant ID.
float	getPlantAge (uint plantID) const
	Retrieves the age of a specific plant.
uint	getShootNodeCount (uint plantID, uint shootID) const
	Retrieves the number of nodes in a specific shoot of a specific plant.
float	getShootTaper (uint plantID, uint shootID) const
	Retrieves the taper of a shoot based on its radius measurements.
helios::vec3	getPlantBasePosition (uint plantID) const
	Retrieves the base position of the specified plant.
std::vector< helios::vec3 >	getPlantBasePosition (const std::vector< uint > &plantIDs) const
	Retrieves the base positions of multiple plants.
float	sumPlantLeafArea (uint plantID) const
	Sum the one-sided leaf area of all leaves in the plant.
float	getPlantStemHeight (uint plantID) const
	Calculate the height of the last internode on the base stem/shoot.
float	getPlantHeight (uint plantID) const
	Calculate the height of the highest element in the plant.
std::vector< float >	getPlantLeafInclinationAngleDistribution (uint plantID, uint Nbins, bool normalize=true) const
	Calculate the leaf inclination angle distribution of all leaves in the plant.
std::vector< float >	getPlantLeafInclinationAngleDistribution (const std::vector< uint > &plantIDs, uint Nbins, bool normalize=true) const
	Calculate the leaf inclination angle distribution of all leaves in multiple plants.
std::vector< float >	getPlantLeafAzimuthAngleDistribution (uint plantID, uint Nbins, bool normalize=true) const
	Calculate the leaf azimuth angle distribution of all leaves in the plant.
std::vector< float >	getPlantLeafAzimuthAngleDistribution (const std::vector< uint > &plantIDs, uint Nbins, bool normalize=true) const
	Calculate the leaf azimuth angle distribution of all leaves in multiple plants.
uint	getPlantLeafCount (uint plantID) const
	Get the total number of leaves on the plant.
std::vector< helios::vec3 >	getPlantLeafBases (uint plantID) const
	Get the base positions of all leaves on the plant.
std::vector< helios::vec3 >	getPlantLeafBases (const std::vector< uint > &plantIDs) const
	Get the base positions of all leaves for a list of plants.
bool	isPlantDormant (uint plantID) const
	Checks if the plant with the given ID is dormant.
void	writePlantMeshVertices (uint plantID, const std::string &filename) const
	Write all vertices in the plant to a file for external processing (e.g., bounding volume, convex hull)
std::vector< uint >	getAllPlantIDs () const
	Get IDs for all plant instances.
std::vector< uint >	getAllPlantObjectIDs (uint plantID) const
	Get object IDs for all organs objects for a given plant.
std::vector< uint >	getAllPlantUUIDs (uint plantID) const
	Get primitive UUIDs for all primitives in a given plant.
std::vector< uint >	getPlantInternodeObjectIDs (uint plantID) const
	Get object IDs for all internode (Tube) objects for a given plant.
std::vector< uint >	getPlantPetioleObjectIDs (uint plantID) const
	Get object IDs for all petiole (Tube) objects for a given plant.
std::vector< uint >	getPlantLeafObjectIDs (uint plantID) const
	Get object IDs for all leaf objects for a given plant.
std::vector< uint >	getPlantLeafObjectIDs (const std::vector< uint > &plantIDs) const
	Get object IDs for all leaf objects for a list of plants.
std::vector< uint >	getPlantPeduncleObjectIDs (uint plantID) const
	Get object IDs for all peduncle (Tube) objects for a given plant.
std::vector< uint >	getPlantFlowerObjectIDs (uint plantID) const
	Get object IDs for all inflorescence objects for a given plant.
std::vector< uint >	getPlantFruitObjectIDs (uint plantID) const
	Get object IDs for all fruit objects for a given plant.
std::vector< uint >	getPlantCollisionRelevantObjectIDs (uint plantID) const
	Get collision-relevant object IDs for a specific plant.
std::vector< uint >	getAllUUIDs () const
	Get UUIDs for all existing plant primitives.
std::vector< uint >	getAllLeafUUIDs () const
	Get UUIDs for all existing leaf primitives.
std::vector< uint >	getAllInternodeUUIDs () const
	Get UUIDs for all existing internode primitives.
std::vector< uint >	getAllPetioleUUIDs () const
	Get UUIDs for all existing petiole primitives.
std::vector< uint >	getAllPeduncleUUIDs () const
	Get UUIDs for all existing peduncle primitives.
std::vector< uint >	getAllFlowerUUIDs () const
	Get UUIDs for all existing flower primitives.
std::vector< uint >	getAllFruitUUIDs () const
	Get UUIDs for all existing fruit primitives.
std::vector< uint >	getAllObjectIDs () const
	Get object IDs for all existing plant compound objects.
void	enableCarbohydrateModel ()
	Enables the carbohydrate model in the plant architecture development.
void	disableCarbohydrateModel ()
	Disables the carbohydrate model.
std::string	getPlantString (uint plantID) const
	Retrieves a string representation of a plant based on its ID.
uint	generatePlantFromString (const std::string &generation_string, const PhytomerParameters &phytomer_parameters)
	Generates a plant model based on the given generation string and phytomer parameters.
uint	generatePlantFromString (const std::string &generation_string, const std::map< std::string, PhytomerParameters > &phytomer_parameters)
	Generates a plant based on the provided description string and phytomer parameters.
void	writePlantStructureXML (uint plantID, const std::string &filename) const
	Writes the structure of a plant instance to an XML file.
void	writeQSMCylinderFile (uint plantID, const std::string &filename) const
	Writes plant structure to TreeQSM cylinder format.
std::vector< uint >	readPlantStructureXML (const std::string &filename, bool quiet=false)
	Reads plant structure data from an XML file.
void	disableMessages ()
	Disable standard output from this plug-in.
void	enableMessages ()
	Re-enable standard output from this plug-in.

Static Public Member Functions
static int	selfTest (int argc, char **argv)
	Unit test routines.

Friends
struct	Phytomer
struct	Shoot

Detailed Description

Definition at line 1618 of file PlantArchitecture.h.

Constructor & Destructor Documentation

PlantArchitecture()

PlantArchitecture::PlantArchitecture ( helios::Context *  context_ptr )

explicit

Main architectural model class constructor.

Parameters

[in]

context_ptr

Pointer to the Helios context.

Definition at line 91 of file PlantArchitecture.cpp.

~PlantArchitecture()

PlantArchitecture::~PlantArchitecture

(

)

Destructor - cleans up internal CollisionDetection instance if owned.

Definition at line 109 of file PlantArchitecture.cpp.

Member Function Documentation

accumulateHourlyLeafPhotosynthesis()

void PlantArchitecture::accumulateHourlyLeafPhotosynthesis

(

)

const

Accumulates hourly net photosynthesis for each leaf in the plant architecture.

This function iterates through all the plants in the architecture, handling both dormant and active shoots. It retrieves and processes the net hourly photosynthesis values for each leaf, calculates the hourly contribution in moles of carbon, and updates the cumulative net photosynthesis data.

Note

This function performs area-based calculations and updates context-specific data for each leaf primitive.

Definition at line 96 of file CarbohydrateModel.cpp.

addBaseStemShoot()

uint PlantArchitecture::addBaseStemShoot	(	uint	plantID,
		uint	current_node_number,
		const AxisRotation &	base_rotation,
		float	internode_radius,
		float	internode_length_max,
		float	internode_length_scale_factor_fraction,
		float	leaf_scale_factor_fraction,
		float	radius_taper,
		const std::string &	shoot_type_label
	)

Define the stem/trunk shoot (base of plant) to start a new plant. This requires a plant instance has already been created using the addPlantInstance() method.

Parameters

[in]	plantID	ID of the plant instance.
[in]	current_node_number	Number of nodes of the stem shoot.
[in]	base_rotation	AxisRotation object (pitch, yaw, roll) specifying the orientation of the base of the shoot.
[in]	internode_radius	Radius of the internodes along the shoot.
[in]	internode_length_max	Maximum length (i.e., fully elongated) of the internodes along the shoot.
[in]	internode_length_scale_factor_fraction	Scaling factor of the maximum internode length to determine the actual initial internode length at the time of creation (=1 applies no scaling).
[in]	leaf_scale_factor_fraction	Scaling factor of the leaf/petiole to determine the actual initial leaf size at the time of creation (=1 applies no scaling).
[in]	radius_taper	Tapering factor of the internode radius along the shoot (0=constant radius, 1=linear taper to zero radius).
[in]	shoot_type_label	Label of the shoot type to be used for the base stem shoot. This requires that the shoot type has already been defined using the defineShootType() method.

Returns

ID of the new shoot to be used to reference it later.

Definition at line 2779 of file PlantArchitecture.cpp.

addChildShoot()

uint PlantArchitecture::addChildShoot	(	uint	plantID,
		int	parent_shoot_ID,
		uint	parent_node_index,
		uint	current_node_number,
		const AxisRotation &	shoot_base_rotation,
		float	internode_radius,
		float	internode_length_max,
		float	internode_length_scale_factor_fraction,
		float	leaf_scale_factor_fraction,
		float	radius_taper,
		const std::string &	shoot_type_label,
		uint	petiole_index = 0
	)

Manually add a child shoot at the axillary bud of a phytomer.

Parameters

[in]	plantID	ID of the plant instance.
[in]	parent_shoot_ID	ID of the shoot to which the new shoot will be added.
[in]	parent_node_index	Number of the node of the parent shoot at which the new shoot will be added.
[in]	current_node_number	Number of nodes of the newly added shoot.
[in]	shoot_base_rotation	AxisRotation object (pitch, yaw, roll) specifying the orientation of the base of the shoot.
[in]	internode_radius	Initial radius of the internodes along the shoot.
[in]	internode_length_max	Length of the internode of the newly appended shoot.
[in]	internode_length_scale_factor_fraction	Scaling factor of the maximum internode length to determine the actual initial internode length at the time of creation (=1 applies no scaling).
[in]	leaf_scale_factor_fraction	Scaling factor of the leaf/petiole to determine the actual initial leaf size at the time of creation (=1 applies no scaling).
[in]	radius_taper	Tapering factor of the internode radius along the shoot (0=constant radius, 1=linear taper to zero radius).
[in]	shoot_type_label	Label of the shoot type to be used for the new shoot. This requires that the shoot type has already been defined using the defineShootType() method.
[in]	petiole_index	[optional] Index of the petiole within the internode to which the new shoot will be attached (when there are multiple petioles per internode)

Returns

ID of the newly generated shoot.

Definition at line 2852 of file PlantArchitecture.cpp.

addEpicormicShoot()

uint PlantArchitecture::addEpicormicShoot	(	uint	plantID,
		int	parent_shoot_ID,
		float	parent_position_fraction,
		uint	current_node_number,
		float	zenith_perturbation_degrees,
		float	internode_radius,
		float	internode_length_max,
		float	internode_length_scale_factor_fraction,
		float	leaf_scale_factor_fraction,
		float	radius_taper,
		const std::string &	shoot_type_label
	)

Manually add a child epicormic shoot (water sprout) at an arbitrary position along the shoot.

Parameters

[in]	plantID	ID of the plant instance.
[in]	parent_shoot_ID	ID of the shoot to which the new shoot will be added.
[in]	parent_position_fraction	Position along the parent shoot to add the epicormic shoot as a fraction of the parent shoot length.
[in]	current_node_number	Number of nodes of the newly added shoot.
[in]	zenith_perturbation_degrees	Pitch angle of epicormic shoot base away from parent shoot axis (degrees).
[in]	internode_radius	Initial radius of the internodes along the shoot.
[in]	internode_length_max	Length of the internode of the newly appended shoot.
[in]	internode_length_scale_factor_fraction	Scaling factor of the maximum internode length to determine the actual initial internode length at the time of creation (=1 applies no scaling).
[in]	leaf_scale_factor_fraction	Scaling factor of the leaf/petiole to determine the actual initial leaf size at the time of creation (=1 applies no scaling).
[in]	radius_taper	Tapering factor of the internode radius along the shoot (0=constant radius, 1=linear taper to zero radius).
[in]	shoot_type_label	Label of the shoot type to be used for the new shoot. This requires that the shoot type has already been defined using the defineShootType() method.

Returns

ID of the newly generated shoot.

Definition at line 2893 of file PlantArchitecture.cpp.

addPlantInstance()

uint PlantArchitecture::addPlantInstance	(	const helios::vec3 &	base_position,
		float	current_age
	)

Create an instance of a plant.

This is the first step of the plant building process. It creates an empty plant instance that can be built up manually, or using a pre-defined plant type in the library.

Parameters

[in]	base_position	Cartesian coordinates of the base of the plant.
[in]	current_age	Age of the plant in days.

Returns

ID of the plant instance.

Definition at line 4205 of file PlantArchitecture.cpp.

adjustFruitForObstacleCollision()

void PlantArchitecture::adjustFruitForObstacleCollision

(

)

Adjust fruit objects to prevent collision with solid obstacles via rotation.

This method checks all fruit in the plant architecture for collisions with solid obstacles and rotates them about their base position to prevent intersection. The rotation is applied in the opposite direction of the original pitch to simulate natural fruit lifting.

Note

This method should be called after all plant growth updates are complete.

Definition at line 4808 of file PlantArchitecture.cpp.

advanceTime() [1/4]

void PlantArchitecture::advanceTime	(	const std::vector< uint > &	plantIDs,
		float	time_step_days
	)

Advance plant growth by a specified time interval for a specified set of plants.

Parameters

[in]	plantIDs	IDs of the plant instances.
[in]	time_step_days	Time interval in days.

Definition at line 4348 of file PlantArchitecture.cpp.

advanceTime() [2/4]

void PlantArchitecture::advanceTime

(

float

time_step_days

)

Advance plant growth by a specified time interval for all plants.

Parameters

[in]

time_step_days

Time interval in days.

Definition at line 4335 of file PlantArchitecture.cpp.

advanceTime() [3/4]

void PlantArchitecture::advanceTime	(	int	time_step_years,
		float	time_step_days
	)

Advance plant growth by a specified time interval for all plants.

Parameters

[in]	time_step_years	Number of years to advance.
[in]	time_step_days	Number of days to advance (added to number of years).

Definition at line 4339 of file PlantArchitecture.cpp.

advanceTime() [4/4]

void PlantArchitecture::advanceTime	(	uint	plantID,
		float	time_step_days
	)

Advance plant growth by a specified time interval for a single plant.

Parameters

[in]	plantID	ID of the plant instance.
[in]	time_step_days	Time interval in days.

Definition at line 4343 of file PlantArchitecture.cpp.

appendAttractionPoints() [1/2]

void PlantArchitecture::appendAttractionPoints

(

const std::vector< helios::vec3 > &

attraction_points

)

Update attraction points positions by appending to any existing points.

Parameters

[in]

attraction_points

Updated vector of 3D positions that plants should grow toward

appendAttractionPoints() [2/2]

void PlantArchitecture::appendAttractionPoints	(	uint	plantID,
		const std::vector< helios::vec3 > &	attraction_points
	)

Append attraction points for a specific plant.

Parameters

[in]	plantID	Identifier of the plant to append attraction points for
[in]	attraction_points	Vector of 3D positions to append to existing attraction points

appendPhytomerToShoot()

int PlantArchitecture::appendPhytomerToShoot	(	uint	plantID,
		uint	shootID,
		const PhytomerParameters &	phytomer_parameters,
		float	internode_radius,
		float	internode_length_max,
		float	internode_length_scale_factor_fraction,
		float	leaf_scale_factor_fraction
	)

Add a new phytomer at the terminal bud of a shoot.

Parameters

[in]	plantID	ID of the plant instance.
[in]	shootID	ID of the shoot to which the phytomer will be added
[in]	phytomer_parameters	Parameters of the phytomer to be added
[in]	internode_radius	Radius of the phytomer internode at the time of creation
[in]	internode_length_max	Maximum internode length at full elongation
[in]	internode_length_scale_factor_fraction	Scaling factor of the maximum internode length to determine the actual initial internode length at the time of creation (=1 applies no scaling).
[in]	leaf_scale_factor_fraction	Scaling factor of the leaf/petiole to determine the actual initial leaf size at the time of creation (=1 applies no scaling).

Returns

ID of generated phytomer

Definition at line 2927 of file PlantArchitecture.cpp.

appendShoot()

uint PlantArchitecture::appendShoot	(	uint	plantID,
		int	parent_shoot_ID,
		uint	current_node_number,
		const AxisRotation &	base_rotation,
		float	internode_radius,
		float	internode_length_max,
		float	internode_length_scale_factor_fraction,
		float	leaf_scale_factor_fraction,
		float	radius_taper,
		const std::string &	shoot_type_label
	)

Manually append a new shoot at the end of an existing shoot. This is used when the characteristics of a shoot change along its length (e.g., from a unifoliate to trifoliate leaf).

Parameters

[in]	plantID	ID of the plant instance.
[in]	parent_shoot_ID	ID of the shoot to which the new shoot will be appended.
[in]	current_node_number	Number of nodes/phytomers of the newly appended shoot.
[in]	base_rotation	AxisRotation object (pitch, yaw, roll) specifying the orientation of the base of the shoot relative to the parent shoot.
[in]	internode_radius	Initial radius of the internodes along the shoot.
[in]	internode_length_max	Length of the internode of the newly appended shoot.
[in]	internode_length_scale_factor_fraction	Scaling factor of the maximum internode length to determine the actual initial internode length at the time of creation (=1 applies no scaling).
[in]	leaf_scale_factor_fraction	Scaling factor of the leaf/petiole to determine the actual initial leaf size at the time of creation (=1 applies no scaling).
[in]	radius_taper	Tapering factor of the internode radius along the shoot (0=constant radius, 1=linear taper to zero radius).
[in]	shoot_type_label	Label of the shoot type to be used for the new shoot. This requires that the shoot type has already been defined using the defineShootType() method.

Returns

ID of the new shoot to be used to reference it later.

Definition at line 2809 of file PlantArchitecture.cpp.

breakPlantDormancy()

void PlantArchitecture::breakPlantDormancy

(

uint

plantID

)

Breaks the dormancy of all shoots in the specified plant.

Parameters

[in]

plantID

Identifier of the plant whose shoots' dormancy should be broken.

Definition at line 3583 of file PlantArchitecture.cpp.

buildPlantCanopyFromLibrary() [1/2]

std::vector< uint > PlantArchitecture::buildPlantCanopyFromLibrary	(	const helios::vec3 &	canopy_center_position,
		const helios::vec2 &	canopy_extent_xy,
		uint	plant_count,
		float	age
	)

Build a canopy of randomly scattered plants based on the model currently loaded from the library.

Parameters

[in]	canopy_center_position	Cartesian coordinates of the center of the canopy boundaries.
[in]	canopy_extent_xy	Size/extent of the canopy boundaries in the x- and y-directions.
[in]	plant_count	Number of plants to randomly generate inside canopy bounds.
[in]	age	Age of the plants in the canopy in days.

Returns

Vector of plant instance IDs.

Definition at line 272 of file PlantArchitecture.cpp.

buildPlantCanopyFromLibrary() [2/2]

std::vector< uint > PlantArchitecture::buildPlantCanopyFromLibrary	(	const helios::vec3 &	canopy_center_position,
		const helios::vec2 &	plant_spacing_xy,
		const helios::int2 &	plant_count_xy,
		float	age,
		float	germination_rate = 1.f
	)

Build a canopy of regularly spaced plants based on the model currently loaded from the library.

Parameters

[in]	canopy_center_position	Cartesian coordinates of the center of the canopy.
[in]	plant_spacing_xy	Spacing between plants in the canopy in the x- and y-directions.
[in]	plant_count_xy	Number of plants in the canopy in the x- and y-directions.
[in]	age	Age of the plants in the canopy in days.
[in]	germination_rate	[optional] Probability that a plant in the canopy germinates and a plant is created.

Returns

Vector of plant instance IDs.

Definition at line 248 of file PlantArchitecture.cpp.

buildPlantInstanceFromLibrary()

uint PlantArchitecture::buildPlantInstanceFromLibrary	(	const helios::vec3 &	base_position,
		float	age
	)

Build a plant instance based on the model currently loaded from the library.

Parameters

[in]	base_position	Cartesian coordinates of the base of the plant.
[in]	age	Age of the plant in days.

Returns

ID of the plant instance.

Definition at line 91 of file PlantLibrary.cpp.

defineShootType()

void PlantArchitecture::defineShootType	(	const std::string &	shoot_type_label,
		const ShootParameters &	shoot_params
	)

Define a new shoot type based on a set of ShootParameters.

Parameters

[in]	shoot_type_label	User-defined label for the new shoot type. This string is used later to reference this type of shoot.
[in]	shoot_params	Parameters structure for the new shoot type.

Definition at line 284 of file PlantArchitecture.cpp.

deletePlantInstance() [1/2]

void PlantArchitecture::deletePlantInstance

(

const std::vector< uint > &

plantIDs

)

Delete multiple existing plant instances.

Parameters

[in]

plantIDs

IDs of the plant instances to be deleted.

Definition at line 4286 of file PlantArchitecture.cpp.

deletePlantInstance() [2/2]

void PlantArchitecture::deletePlantInstance

(

uint

plantID

)

Delete an existing plant instance.

Parameters

[in]

plantID

ID of the plant instance to be deleted.

Definition at line 4276 of file PlantArchitecture.cpp.

detectAttractionPointsInCone()

bool PlantArchitecture::detectAttractionPointsInCone	(	const helios::vec3 &	vertex,
		const helios::vec3 &	look_direction,
		float	look_ahead_distance,
		float	half_angle_degrees,
		helios::vec3 &	direction_to_closest
	)		const

Detects attraction points within a viewing cone from a given position.

This method finds the closest attraction point within a cone defined by the look direction, half-angle, and look-ahead distance. It performs pure geometric calculations without requiring collision detection infrastructure.

Parameters

[in]	vertex	Starting position (apex of the viewing cone)
[in]	look_direction	Direction the cone is pointing (will be normalized)
[in]	look_ahead_distance	Maximum distance to look for attraction points
[in]	half_angle_degrees	Half-angle of the viewing cone in degrees (0-180)
[out]	direction_to_closest	Unit vector pointing to the closest attraction point (if found)

Returns

True if an attraction point was found within the cone, false otherwise

Definition at line 802 of file PlantArchitecture.cpp.

disableAttractionPoints() [1/2]

void PlantArchitecture::disableAttractionPoints

(

)

Disable attraction points and revert to natural growth.

Definition at line 5589 of file PlantArchitecture.cpp.

disableAttractionPoints() [2/2]

void PlantArchitecture::disableAttractionPoints

(

uint

plantID

)

Disable attraction points for a specific plant.

Parameters

[in]

plantID

Identifier of the plant to disable attraction points for

Definition at line 5707 of file PlantArchitecture.cpp.

disableCarbohydrateModel()

void PlantArchitecture::disableCarbohydrateModel

(

)

Disables the carbohydrate model.

Definition at line 4201 of file PlantArchitecture.cpp.

disableCollisionDetection()

void PlantArchitecture::disableCollisionDetection

(

)

Disable collision detection for plant growth and clean up internal CollisionDetection instance.

Definition at line 5315 of file PlantArchitecture.cpp.

disableInternodeContextBuild()

void PlantArchitecture::disableInternodeContextBuild

(

)

Do not build internode primitive geometry in the Context.

Definition at line 3004 of file PlantArchitecture.cpp.

disableMessages()

void PlantArchitecture::disableMessages

(

)

Disable standard output from this plug-in.

Definition at line 5811 of file PlantArchitecture.cpp.

disablePeduncleContextBuild()

void PlantArchitecture::disablePeduncleContextBuild

(

)

Do not build peduncle primitive geometry in the Context.

Definition at line 3012 of file PlantArchitecture.cpp.

disablePetioleContextBuild()

void PlantArchitecture::disablePetioleContextBuild

(

)

Do not build petiole primitive geometry in the Context.

Definition at line 3008 of file PlantArchitecture.cpp.

disablePlantPhenology()

void PlantArchitecture::disablePlantPhenology

(

uint

plantID

)

Disables the phenological progression of a specified plant instance.

Parameters

[in]

plantID

Identifier of the plant whose phenology is to be disabled.

Definition at line 4326 of file PlantArchitecture.cpp.

duplicatePlantInstance()

uint PlantArchitecture::duplicatePlantInstance	(	uint	plantID,
		const helios::vec3 &	base_position,
		const AxisRotation &	base_rotation,
		float	current_age
	)

Duplicate an existing plant instance and specify its base position and age.

Parameters

[in]	plantID	ID of the existing plant instance to be duplicated.
[in]	base_position	Cartesian coordinates of the base of the new plant copy.
[in]	base_rotation	Rotation of the new plant copy.
[in]	current_age	Age of the new plant copy in days.

Returns

ID of the new plant instance.

Definition at line 4219 of file PlantArchitecture.cpp.

enableAttractionPoints() [1/2]

void PlantArchitecture::enableAttractionPoints	(	const std::vector< helios::vec3 > &	attraction_points,
		float	view_half_angle_deg = 80.0f,
		float	look_ahead_distance = 0.1f,
		float	attraction_weight = 0.6f
	)

Enable attraction points to guide plant growth toward specific targets.

Parameters

[in]	attraction_points	Vector of 3D positions that plants should grow toward
[in]	view_half_angle_deg	Half-angle of the attraction detection view cone in degrees (default = 80)
[in]	look_ahead_distance	How far ahead attraction points will be considered in meters (default = 0.1)
[in]	attraction_weight	Weight factor for attraction vs natural growth (0.0 = ignore attraction, 1.0 = full attraction) (default = 0.6)

enableAttractionPoints() [2/2]

void PlantArchitecture::enableAttractionPoints	(	uint	plantID,
		const std::vector< helios::vec3 > &	attraction_points,
		float	view_half_angle_deg = 80.0f,
		float	look_ahead_distance = 0.1f,
		float	attraction_weight = 0.6f
	)

Enable attraction points for a specific plant.

Parameters

[in]	plantID	Identifier of the plant to apply attraction points to
[in]	attraction_points	Vector of 3D positions that the plant should grow toward
[in]	view_half_angle_deg	Half-angle of the attraction detection view cone in degrees (default = 80)
[in]	look_ahead_distance	How far ahead attraction points will be considered in meters (default = 0.1m)
[in]	attraction_weight	Weight factor for attraction vs natural growth (0.0 = ignore attraction, 1.0 = full attraction) (default = 0.6)

enableCarbohydrateModel()

void PlantArchitecture::enableCarbohydrateModel

(

)

Enables the carbohydrate model in the plant architecture development.

Definition at line 4197 of file PlantArchitecture.cpp.

enableEpicormicChildShoots()

void PlantArchitecture::enableEpicormicChildShoots	(	uint	plantID,
		const std::string &	epicormic_shoot_type_label,
		float	epicormic_probability_perlength_perday
	)

Enable shoot type to produce epicormic child shoots (water sprouts)

Note

The probability that the shoot produces an epicormic shoot over period of dt is P = (epicormic_probability_perlength_perday * shoot_length * dt)*sin(shoot_inclinantion)

Parameters

[in]	plantID	ID of the plant instance.
[in]	epicormic_shoot_type_label	Label of the shoot type corresponding to epicormic shoots.
[in]	epicormic_probability_perlength_perday	Probability of epicormic shoot formation per unit length of the parent shoot per day.

Definition at line 2992 of file PlantArchitecture.cpp.

enableGroundClipping()

void PlantArchitecture::enableGroundClipping

(

float

ground_height = 0.f

)

Enable automatic removal of organs that are below the ground plane.

Parameters

[in]

ground_height

[optional] Height of the ground plane (default = 0).

Definition at line 3016 of file PlantArchitecture.cpp.

enableMessages()

void PlantArchitecture::enableMessages

(

)

Re-enable standard output from this plug-in.

Definition at line 5818 of file PlantArchitecture.cpp.

enableSoftCollisionAvoidance()

void PlantArchitecture::enableSoftCollisionAvoidance	(	const std::vector< uint > &	target_object_UUIDs = {},
		const std::vector< uint > &	target_object_IDs = {},
		bool	enable_petiole_collision = false,
		bool	enable_fruit_collision = false
	)

Enable collision detection for plant growth avoidance (creates internal CollisionDetection instance)

Parameters

[in]	target_object_UUIDs	[optional] Vector of specific UUIDs to avoid (empty = avoid all geometry)
[in]	target_object_IDs	[optional] Vector of specific object IDs to avoid (empty = avoid all objects)
[in]	enable_petiole_collision	[optional] Enable collision detection for petioles (default: false)
[in]	enable_fruit_collision	[optional] Enable collision detection for fruits (default: false)

Definition at line 5256 of file PlantArchitecture.cpp.

enableSolidObstacleAvoidance()

void PlantArchitecture::enableSolidObstacleAvoidance	(	const std::vector< uint > &	obstacle_UUIDs,
		float	avoidance_distance = 0.5f,
		bool	enable_fruit_adjustment = false,
		bool	enable_obstacle_pruning = false
	)

Enable solid obstacle avoidance for plant growth.

Designates certain primitives as solid obstacles that plant growth must avoid.

When enabled, plant growth will gradually redirect as it approaches these obstacles, with increasingly strong curvature as distance decreases. The plant will eventually grow parallel to the obstacle surface at a marginal distance.

Parameters

[in]	obstacle_UUIDs	Vector of primitive UUIDs that represent solid obstacles
[in]	avoidance_distance	Distance at which obstacle avoidance begins (meters)
[in]	enable_fruit_adjustment	Enable automatic fruit rotation adjustment to avoid obstacles (default: false)
[in]	enable_obstacle_pruning	Enable solid obstacle collision pruning (default: true)

Definition at line 5383 of file PlantArchitecture.cpp.

generatePlantFromString() [1/2]

uint PlantArchitecture::generatePlantFromString	(	const std::string &	generation_string,
		const PhytomerParameters &	phytomer_parameters
	)

Generates a plant model based on the given generation string and phytomer parameters.

Parameters

[in]	generation_string	Input string describing the plant generation rules and structure.
[in]	phytomer_parameters	Parameters that define the characteristics of a single phytomer.

Returns

The total number of phytomers generated in the plant architecture.

Definition at line 393 of file InputOutput.cpp.

generatePlantFromString() [2/2]

uint PlantArchitecture::generatePlantFromString	(	const std::string &	generation_string,
		const std::map< std::string, PhytomerParameters > &	phytomer_parameters
	)

Generates a plant based on the provided description string and phytomer parameters.

Parameters

[in]	generation_string	A string encoding of the plant structure.
[in]	phytomer_parameters	A map containing parameter configurations for each type of phytomer.

Returns

A unique identifier for the generated plant.

Note

The input string must begin with '{', and valid phytomer parameters must be provided.

Definition at line 399 of file InputOutput.cpp.

getAllFlowerUUIDs()

std::vector< uint > PlantArchitecture::getAllFlowerUUIDs

(

)

const

Get UUIDs for all existing flower primitives.

Returns

Vector of UUIDs for all flower primitives.

Definition at line 4168 of file PlantArchitecture.cpp.

getAllFruitUUIDs()

std::vector< uint > PlantArchitecture::getAllFruitUUIDs

(

)

const

Get UUIDs for all existing fruit primitives.

Returns

Vector of UUIDs for all fruit primitives.

Definition at line 4178 of file PlantArchitecture.cpp.

getAllInternodeUUIDs()

std::vector< uint > PlantArchitecture::getAllInternodeUUIDs

(

)

const

Get UUIDs for all existing internode primitives.

Returns

Vector of UUIDs for all internode primitives.

Definition at line 4138 of file PlantArchitecture.cpp.

getAllLeafUUIDs()

std::vector< uint > PlantArchitecture::getAllLeafUUIDs

(

)

const

Get UUIDs for all existing leaf primitives.

Returns

Vector of UUIDs for all leaf primitives.

Definition at line 4128 of file PlantArchitecture.cpp.

getAllObjectIDs()

std::vector< uint > PlantArchitecture::getAllObjectIDs

(

)

const

Get object IDs for all existing plant compound objects.

Returns

Vector of object IDs for all plant compound objects.

Definition at line 4188 of file PlantArchitecture.cpp.

getAllPeduncleUUIDs()

std::vector< uint > PlantArchitecture::getAllPeduncleUUIDs

(

)

const

Get UUIDs for all existing peduncle primitives.

Returns

Vector of UUIDs for all peduncle primitives.

Definition at line 4158 of file PlantArchitecture.cpp.

getAllPetioleUUIDs()

std::vector< uint > PlantArchitecture::getAllPetioleUUIDs

(

)

const

Get UUIDs for all existing petiole primitives.

Returns

Vector of UUIDs for all petiole primitives.

Definition at line 4148 of file PlantArchitecture.cpp.

getAllPlantIDs()

std::vector< uint > PlantArchitecture::getAllPlantIDs

(

)

const

Get IDs for all plant instances.

Returns

Vector of plant IDs for all plant instances

Definition at line 3894 of file PlantArchitecture.cpp.

getAllPlantObjectIDs()

std::vector< uint > PlantArchitecture::getAllPlantObjectIDs

(

uint

plantID

)

const

Get object IDs for all organs objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all organs in the plant.

Definition at line 3905 of file PlantArchitecture.cpp.

getAllPlantUUIDs()

std::vector< uint > PlantArchitecture::getAllPlantUUIDs

(

uint

plantID

)

const

Get primitive UUIDs for all primitives in a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of primitive UUIDs for all primitives in the plant.

Definition at line 3935 of file PlantArchitecture.cpp.

getAllUUIDs()

std::vector< uint > PlantArchitecture::getAllUUIDs

(

)

const

Get UUIDs for all existing plant primitives.

Returns

Vector of UUIDs for all plant primitives.

Definition at line 4119 of file PlantArchitecture.cpp.

getAvailablePlantModels()

std::vector< std::string > PlantArchitecture::getAvailablePlantModels

(

)

const

Get list of all available plant models in the library.

Definition at line 82 of file PlantLibrary.cpp.

getCollisionDetection()

CollisionDetection * PlantArchitecture::getCollisionDetection

(

)

const

Get access to the internal CollisionDetection instance (for advanced usage)

Returns

Pointer to internal CollisionDetection instance, or nullptr if not enabled

Definition at line 5362 of file PlantArchitecture.cpp.

getCurrentPhytomerParameters()

std::map< std::string, PhytomerParameters > PlantArchitecture::getCurrentPhytomerParameters

(

)

Get the phytomer parameters structure for all shoot types in the current plant model.

Returns

Map of phytomer parameters for all type labels to ShootParameters structures for all shoot types in the current plant model. The key is the user-defined label string for the shoot type, and the value is the corresponding PhytomerParameters structure.

Definition at line 141 of file PlantLibrary.cpp.

getCurrentShootParameters() [1/2]

std::map< std::string, ShootParameters > PlantArchitecture::getCurrentShootParameters

(

)

Get the shoot parameters structure for all shoot types in the current plant model.

Returns

Map of shoot type labels to ShootParameters structures for all shoot types in the current plant model. The key is the user-defined label string for the shoot type, and the value is the corresponding ShootParameters structure.

Definition at line 132 of file PlantLibrary.cpp.

getCurrentShootParameters() [2/2]

ShootParameters PlantArchitecture::getCurrentShootParameters

(

const std::string &

shoot_type_label

)

Get the shoot parameters structure for a specific shoot type in the current plant model.

Parameters

[in]

shoot_type_label

User-defined label for the shoot type.

Returns

ShootParameters structure for the specified shoot type.

Definition at line 123 of file PlantLibrary.cpp.

getPlantAge()

float PlantArchitecture::getPlantAge

(

uint

plantID

)

const

Retrieves the age of a specific plant.

Parameters

[in]

plantID

Unique identifier of the plant.

Returns

The age of the plant in days associated with the given plantID.

Definition at line 3501 of file PlantArchitecture.cpp.

getPlantBasePosition() [1/2]

std::vector< helios::vec3 > PlantArchitecture::getPlantBasePosition

(

const std::vector< uint > &

plantIDs

)

const

Retrieves the base positions of multiple plants.

Parameters

[in]

plantIDs

A vector containing the IDs of the plants for which the base positions are required.

Returns

A vector of vec3 objects representing the base positions of the specified plants.

Definition at line 3230 of file PlantArchitecture.cpp.

getPlantBasePosition() [2/2]

helios::vec3 PlantArchitecture::getPlantBasePosition

(

uint

plantID

)

const

Retrieves the base position of the specified plant.

Parameters

[in]

plantID

Identifier of the plant whose base position is being queried.

Returns

Base position of the plant as a helios::vec3 object.

Definition at line 3221 of file PlantArchitecture.cpp.

getPlantCollisionRelevantObjectIDs()

std::vector< uint > PlantArchitecture::getPlantCollisionRelevantObjectIDs

(

uint

plantID

)

const

Get collision-relevant object IDs for a specific plant.

Parameters

[in]

plantID

Plant ID for which to query collision-relevant object IDs

Returns

Vector of object IDs for collision-relevant organs belonging to specified plant

Returns object IDs for plant organs that are currently enabled for collision detection based on the settings from setCollisionRelevantOrgans().

Definition at line 4077 of file PlantArchitecture.cpp.

getPlantFlowerObjectIDs()

std::vector< uint > PlantArchitecture::getPlantFlowerObjectIDs

(

uint

plantID

)

const

Get object IDs for all inflorescence objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all inflorescences in the plant.

Definition at line 4029 of file PlantArchitecture.cpp.

getPlantFruitObjectIDs()

std::vector< uint > PlantArchitecture::getPlantFruitObjectIDs

(

uint

plantID

)

const

Get object IDs for all fruit objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all fruits in the plant.

Definition at line 4053 of file PlantArchitecture.cpp.

getPlantHeight()

float PlantArchitecture::getPlantHeight

(

uint

plantID

)

const

Calculate the height of the highest element in the plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Height of the highest element in the plant.

Definition at line 3288 of file PlantArchitecture.cpp.

getPlantInternodeObjectIDs()

std::vector< uint > PlantArchitecture::getPlantInternodeObjectIDs

(

uint

plantID

)

const

Get object IDs for all internode (Tube) objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all internodes in the plant.

Definition at line 3939 of file PlantArchitecture.cpp.

getPlantLeafAzimuthAngleDistribution() [1/2]

std::vector< float > PlantArchitecture::getPlantLeafAzimuthAngleDistribution	(	const std::vector< uint > &	plantIDs,
		uint	Nbins,
		bool	normalize = true
	)		const

Calculate the leaf azimuth angle distribution of all leaves in multiple plants.

Parameters

[in]	plantIDs	Vector of ID of the plant instances.
[in]	Nbins	Number of bins for the histogram.
[in]	normalize	[optional] Normalize the histogram (default = true).

Returns

Histogram of leaf azimuth angles. Bins are evenly spaced between 0 and 360 degrees.

Definition at line 3388 of file PlantArchitecture.cpp.

getPlantLeafAzimuthAngleDistribution() [2/2]

std::vector< float > PlantArchitecture::getPlantLeafAzimuthAngleDistribution	(	uint	plantID,
		uint	Nbins,
		bool	normalize = true
	)		const

Calculate the leaf azimuth angle distribution of all leaves in the plant.

Parameters

[in]	plantID	ID of the plant instance.
[in]	Nbins	Number of bins for the histogram.
[in]	normalize	[optional] Normalize the histogram (default = true).

Returns

Histogram of leaf azimuth angles. Bins are evenly spaced between 0 and 360 degrees.

Definition at line 3353 of file PlantArchitecture.cpp.

getPlantLeafBases() [1/2]

std::vector< helios::vec3 > PlantArchitecture::getPlantLeafBases

(

const std::vector< uint > &

plantIDs

)

const

Get the base positions of all leaves for a list of plants.

Parameters

[in]

plantIDs

List of IDs of the plant instances.

Returns

Vector of base positions of all leaves on the plants.

Definition at line 3442 of file PlantArchitecture.cpp.

getPlantLeafBases() [2/2]

std::vector< helios::vec3 > PlantArchitecture::getPlantLeafBases

(

uint

plantID

)

const

Get the base positions of all leaves on the plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of base positions of all leaves on the plant.

Definition at line 3415 of file PlantArchitecture.cpp.

getPlantLeafCount()

uint PlantArchitecture::getPlantLeafCount

(

uint

plantID

)

const

Get the total number of leaves on the plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Total number of leaves on the plant.

Definition at line 3407 of file PlantArchitecture.cpp.

getPlantLeafInclinationAngleDistribution() [1/2]

std::vector< float > PlantArchitecture::getPlantLeafInclinationAngleDistribution	(	const std::vector< uint > &	plantIDs,
		uint	Nbins,
		bool	normalize = true
	)		const

Calculate the leaf inclination angle distribution of all leaves in multiple plants.

Parameters

[in]	plantIDs	Vector of IDs of the plant instances.
[in]	Nbins	Number of bins for the histogram.
[in]	normalize	[optional] Normalize the histogram (default = true).

Returns

Histogram of leaf inclination angles. Bins are evenly spaced between 0 and 90 degrees.

Definition at line 3335 of file PlantArchitecture.cpp.

getPlantLeafInclinationAngleDistribution() [2/2]

std::vector< float > PlantArchitecture::getPlantLeafInclinationAngleDistribution	(	uint	plantID,
		uint	Nbins,
		bool	normalize = true
	)		const

Calculate the leaf inclination angle distribution of all leaves in the plant.

Parameters

[in]	plantID	ID of the plant instance.
[in]	Nbins	Number of bins for the histogram.
[in]	normalize	[optional] Normalize the histogram (default = true).

Returns

Histogram of leaf inclination angles. Bins are evenly spaced between 0 and 90 degrees.

Definition at line 3300 of file PlantArchitecture.cpp.

getPlantLeafObjectIDs() [1/2]

std::vector< uint > PlantArchitecture::getPlantLeafObjectIDs

(

const std::vector< uint > &

plantIDs

)

const

Get object IDs for all leaf objects for a list of plants.

Parameters

[in]

plantIDs

List of IDs of the plant instances.

Returns

Vector of object IDs for all leaves in the plants.

Definition at line 3997 of file PlantArchitecture.cpp.

getPlantLeafObjectIDs() [2/2]

std::vector< uint > PlantArchitecture::getPlantLeafObjectIDs

(

uint

plantID

)

const

Get object IDs for all leaf objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all leaves in the plant.

Definition at line 3977 of file PlantArchitecture.cpp.

getPlantName()

std::string PlantArchitecture::getPlantName

(

uint

plantID

)

const

Retrieves the name of the plant associated with a given plant ID.

Parameters

[in]

plantID

The unique identifier of the plant.

Returns

The name of the plant corresponding to the provided plant ID.

Definition at line 3494 of file PlantArchitecture.cpp.

getPlantPeduncleObjectIDs()

std::vector< uint > PlantArchitecture::getPlantPeduncleObjectIDs

(

uint

plantID

)

const

Get object IDs for all peduncle (Tube) objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all peduncles in the plant.

Definition at line 4007 of file PlantArchitecture.cpp.

getPlantPetioleObjectIDs()

std::vector< uint > PlantArchitecture::getPlantPetioleObjectIDs

(

uint

plantID

)

const

Get object IDs for all petiole (Tube) objects for a given plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Vector of object IDs for all petioles in the plant.

Definition at line 3957 of file PlantArchitecture.cpp.

getPlantStemHeight()

float PlantArchitecture::getPlantStemHeight

(

uint

plantID

)

const

Calculate the height of the last internode on the base stem/shoot.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Height of the last internode on the base stem/shoot.

Definition at line 3254 of file PlantArchitecture.cpp.

getPlantString()

std::string PlantArchitecture::getPlantString

(

uint

plantID

)

const

Retrieves a string representation of a plant based on its ID.

Parameters

[in]

plantID

The unique identifier of the plant.

Returns

A string encoding of the plant structure.

Definition at line 64 of file InputOutput.cpp.

getShootNodeCount()

uint PlantArchitecture::getShootNodeCount	(	uint	plantID,
		uint	shootID
	)		const

Retrieves the number of nodes in a specific shoot of a specific plant.

Parameters

[in]	plantID	The unique identifier of the plant.
[in]	shootID	The index of the shoot within the plant.

Returns

The current number of nodes in the specified shoot.

Definition at line 3865 of file PlantArchitecture.cpp.

getShootTaper()

float PlantArchitecture::getShootTaper	(	uint	plantID,
		uint	shootID
	)		const

Retrieves the taper of a shoot based on its radius measurements.

Parameters

[in]	plantID	The unique identifier of the plant.
[in]	shootID	The unique identifier of the shoot within the specified plant.

Returns

The taper of the shoot as a float value, constrained between 0 and 1.

Definition at line 3874 of file PlantArchitecture.cpp.

harvestPlant()

void PlantArchitecture::harvestPlant

(

uint

plantID

)

Harvests a plant by removing all leaves and fruit.

Parameters

[in]

plantID

The unique identifier of the plant to be harvested.

Definition at line 3510 of file PlantArchitecture.cpp.

initializeCarbohydratePool()

void PlantArchitecture::initializeCarbohydratePool

(

float

carbohydrate_concentration_molC_m3

)

const

Initializes the carbohydrate pool for all shoots of all plant instances.

Parameters

[in]

carbohydrate_concentration_molC_m3

Concentration of carbohydrates in molC per cubic meter

Definition at line 51 of file CarbohydrateModel.cpp.

initializePlantCarbohydratePool()

void PlantArchitecture::initializePlantCarbohydratePool	(	uint	plantID,
		float	carbohydrate_concentration_molC_m3
	)

Initializes the carbohydrate pool for a specific plant.

Parameters

[in]	plantID	Unique identifier of the plant.
[in]	carbohydrate_concentration_molC_m3	Initial carbohydrate concentration in moles of carbon per cubic meter.

Note

The plant with the specified ID must exist, and the carbohydrate concentration must be non-negative.

Definition at line 65 of file CarbohydrateModel.cpp.

initializeShootCarbohydratePool()

void PlantArchitecture::initializeShootCarbohydratePool	(	uint	plantID,
		uint	shootID,
		float	carbohydrate_concentration_molC_m3
	)

Initializes the carbohydrate pool for a specific shoot of a plant.

Parameters

[in]	plantID	Identifier for the plant whose shoot's carbohydrate pool is being initialized.
[in]	shootID	Identifier for the shoot of the plant.
[in]	carbohydrate_concentration_molC_m3	Carbohydrate concentration in moles of carbon per cubic meter; must be non-negative.

Note

Throws an error if the plant or shoot ID does not exist, or if the carbohydrate concentration is negative.

Definition at line 80 of file CarbohydrateModel.cpp.

isPlantDormant()

bool PlantArchitecture::isPlantDormant

(

uint

plantID

)

const

Checks if the plant with the given ID is dormant.

Parameters

[in]

plantID

The ID of the plant to check.

Returns

True if all shoots on the plant are dormant, false otherwise.

Definition at line 3451 of file PlantArchitecture.cpp.

loadPlantModelFromLibrary()

void PlantArchitecture::loadPlantModelFromLibrary

(

const std::string &

plant_label

)

Load an existing plant model from the library.

Parameters

[in]

plant_label

User-defined label for the plant model to be loaded.

Definition at line 76 of file PlantLibrary.cpp.

makePlantDormant()

void PlantArchitecture::makePlantDormant

(

uint

plantID

)

Makes the specified plant enter a dormant state.

Parameters

[in]

plantID

ID of the plant to be made dormant.

Definition at line 3572 of file PlantArchitecture.cpp.

optionalOutputObjectData() [1/2]

void PlantArchitecture::optionalOutputObjectData

(

const std::string &

object_data_label

)

Add optional output object data values to the Context.

Parameters

[in]

object_data_label

Name of object data (e.g., "age", "rank")

Definition at line 5238 of file PlantArchitecture.cpp.

optionalOutputObjectData() [2/2]

void PlantArchitecture::optionalOutputObjectData

(

const std::vector< std::string > &

object_data_labels

)

Add optional output object data values to the Context.

Parameters

[in]

object_data_labels

Vector of names of object data (e.g., {"age", "rank"})

Definition at line 5246 of file PlantArchitecture.cpp.

pruneBranch()

void PlantArchitecture::pruneBranch	(	uint	plantID,
		uint	shootID,
		uint	node_index
	)

Prunes a branch from a specific plant at a designated node index.

Parameters

[in]	plantID	Unique identifier of the plant to prune.
[in]	shootID	Identifier of the shoot to prune from within the plant.
[in]	node_index	Index of the node on the shoot where the branch will be pruned.

Definition at line 3593 of file PlantArchitecture.cpp.

readPlantStructureXML()

std::vector< uint > PlantArchitecture::readPlantStructureXML	(	const std::string &	filename,
		bool	quiet = false
	)

Reads plant structure data from an XML file.

Parses the specified XML file containing plant architecture information and extracts relevant data.

Parameters

[in]	filename	The path to the XML file to load.
[in]	quiet	[optional] If true, suppresses console output of status messages.

Returns

A vector of unsigned integers representing the plant IDs parsed from the XML file.

Note

Throws an exception if the file cannot be parsed or is missing required tags.

Definition at line 697 of file InputOutput.cpp.

removePlantLeaves()

void PlantArchitecture::removePlantLeaves

(

uint

plantID

)

Removes all leaves from the plant with the specified ID.

Parameters

[in]

plantID

The unique identifier of the plant whose leaves are to be removed.

Definition at line 3560 of file PlantArchitecture.cpp.

removeShootLeaves()

void PlantArchitecture::removeShootLeaves	(	uint	plantID,
		uint	shootID
	)

Removes all leaves from a specified shoot in a specified plant.

Parameters

[in]	plantID	ID of the plant from which leaves are to be removed.
[in]	shootID	ID of the shoot within the plant whose leaves are to be removed.

Definition at line 3528 of file PlantArchitecture.cpp.

removeShootVegetativeBuds()

void PlantArchitecture::removeShootVegetativeBuds	(	uint	plantID,
		uint	shootID
	)

Removes all vegetative buds from a specified shoot in a specified plant.

Parameters

[in]	plantID	ID of the plant from which buds are to be removed.
[in]	shootID	ID of the shoot within the plant whose buds are to be removed.

Definition at line 3544 of file PlantArchitecture.cpp.

selfTest()

int PlantArchitecture::selfTest ( int  argc, char **  argv  )

static

Unit test routines.

Definition at line 1230 of file selfTest.cpp.

setAttractionParameters() [1/2]

void PlantArchitecture::setAttractionParameters	(	float	view_half_angle_deg,
		float	look_ahead_distance,
		float	attraction_weight,
		float	obstacle_reduction_factor = 0.75f
	)

Set attraction parameters.

Parameters

[in]	view_half_angle_deg	Half-angle of the attraction detection view cone in degrees
[in]	look_ahead_distance	How far ahead attraction points will be considered in meters
[in]	attraction_weight	Weight factor for attraction vs natural growth (0.0 = ignore attraction, 1.0 = full attraction)
[in]	obstacle_reduction_factor	Reduction factor for attraction when hard obstacles are present (default = 0.75)

Definition at line 5639 of file PlantArchitecture.cpp.

setAttractionParameters() [2/2]

void PlantArchitecture::setAttractionParameters	(	uint	plantID,
		float	view_half_angle_deg,
		float	look_ahead_distance,
		float	attraction_weight,
		float	obstacle_reduction_factor = 0.75f
	)

Set attraction parameters for a specific plant.

Parameters

[in]	plantID	Identifier of the plant to set attraction parameters for
[in]	view_half_angle_deg	Half-angle of the attraction detection view cone in degrees
[in]	look_ahead_distance	How far ahead attraction points will be considered in meters
[in]	attraction_weight	Weight factor for attraction vs natural growth (0.0 = ignore attraction, 1.0 = full attraction)
[in]	obstacle_reduction_factor	Reduction factor for attraction when hard obstacles are present (default = 0.75)

Definition at line 5753 of file PlantArchitecture.cpp.

setCollisionRelevantOrgans()

void PlantArchitecture::setCollisionRelevantOrgans	(	bool	include_internodes,
		bool	include_leaves,
		bool	include_petioles,
		bool	include_flowers,
		bool	include_fruit
	)

Set which organ types should participate in collision detection.

Parameters

[in]	include_internodes	Include internode segments in collision detection (default: false)
[in]	include_leaves	Include leaf surfaces in collision detection (default: true)
[in]	include_petioles	Include petiole segments in collision detection (default: false)
[in]	include_flowers	Include flower geometry in collision detection (default: false)
[in]	include_fruit	Include fruit geometry in collision detection (default: false)

Definition at line 5366 of file PlantArchitecture.cpp.

setGeometryUpdateScheduling()

void PlantArchitecture::setGeometryUpdateScheduling	(	int	update_frequency = 3,
		bool	force_update_on_collision = true
	)

Configure Context geometry update scheduling for efficiency.

Parameters

[in]	update_frequency	How often to update Context geometry (1=every timestep, 2=every 2 timesteps, etc.)
[in]	force_update_on_collision	Force Context update when collision avoidance is triggered

Definition at line 5550 of file PlantArchitecture.cpp.

setPhytomerLeafScale()

void PlantArchitecture::setPhytomerLeafScale	(	uint	plantID,
		uint	shootID,
		uint	node_number,
		float	leaf_scale_factor_fraction
	)

Adjusts the leaf scaling factor (length as a fraction of its maximal length) for a specific phytomer on a plant shoot.

Parameters

[in]	plantID	Identifier of the plant.
[in]	shootID	Identifier of the shoot on the specified plant.
[in]	node_number	Node number of the phytomer to adjust.
[in]	leaf_scale_factor_fraction	Fractional scaling factor for the leaf, must be in the range [0, 1].

Definition at line 3127 of file PlantArchitecture.cpp.

setPlantAge()

void PlantArchitecture::setPlantAge	(	uint	plantID,
		float	current_age
	)

Don't use this.

Definition at line 3489 of file PlantArchitecture.cpp.

setPlantBasePosition()

void PlantArchitecture::setPlantBasePosition	(	uint	plantID,
		const helios::vec3 &	base_position
	)

Sets the base position of a plant with the specified ID.

Parameters

[in]	plantID	Unique identifier of the plant
[in]	base_position	Coordinates representing the new base position of the plant

Definition at line 3147 of file PlantArchitecture.cpp.

setPlantCarbohydrateModelParameters() [1/2]

void PlantArchitecture::setPlantCarbohydrateModelParameters	(	const std::vector< uint > &	plantIDs,
		const CarbohydrateParameters &	carb_parameters
	)

Sets carbohydrate model parameters for specified plants.

Parameters

[in]	plantIDs	A vector of plant IDs for which the parameters will be set.
[in]	carb_parameters	The carbohydrate model parameters to apply.

Definition at line 4320 of file PlantArchitecture.cpp.

setPlantCarbohydrateModelParameters() [2/2]

void PlantArchitecture::setPlantCarbohydrateModelParameters	(	uint	plantID,
		const CarbohydrateParameters &	carb_parameters
	)

Sets the carbohydrate model parameters for a specific plant.

Parameters

[in]	plantID	Identifier for the plant whose parameters are being set.
[in]	carb_parameters	Reference to the carbohydrate parameters to assign to the plant.

Definition at line 4312 of file PlantArchitecture.cpp.

setPlantLeafAngleDistribution() [1/2]

void PlantArchitecture::setPlantLeafAngleDistribution	(	const std::vector< uint > &	plantIDs,
		float	Beta_mu_inclination,
		float	Beta_nu_inclination,
		float	eccentricity,
		float	ellipse_rotation_degrees
	)		const

Sets the leaf angle distribution (both elevation and azimuth) for a list of specified plants.

This method modifies the elevation angles of leaves in the plants such that they follow a Beta distribution, and the azimuth angles such that they follow an ellipsoidal distribution. The methodology does not simply randomly sample angles from the distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole canopy. This makes the transformed plants look as similar as possible to the original plants while still following the specified distribution. The more leaves in the canopy the more accurate the distribution will be, and the more the plants will look like the originals.

Parameters

[in]	plantIDs	Vector of plant IDs to which the leaf angle distribution is to be applied.
[in]	Beta_mu_inclination	Mean parameter for the beta distribution of inclination angles.
[in]	Beta_nu_inclination	Shape parameter for the beta distribution of inclination angles.
[in]	eccentricity	Eccentricity value for the ellipse defining the azimuth distribution.
[in]	ellipse_rotation_degrees	Rotation angle of the ellipse in degrees.

Definition at line 3208 of file PlantArchitecture.cpp.

setPlantLeafAngleDistribution() [2/2]

void PlantArchitecture::setPlantLeafAngleDistribution	(	uint	plantID,
		float	Beta_mu_inclination,
		float	Beta_nu_inclination,
		float	eccentricity,
		float	ellipse_rotation_degrees
	)		const

Sets the leaf angle distribution (both elevation and azimuth) for a specific plant.

This method modifies the elevation angles of leaves in the plant such that they follow a Beta distribution, and the azimuth angles such that they follow an ellipsoidal distribution. The methodology does not simply randomly sample angles from the distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole plant. This makes the transformed plant look as similar as possible to the original plant while still following the specified distribution. The more leaves in the plant the more accurate the distribution will be, and the more the plant will look like the original.

Parameters

[in]	plantID	The unique identifier of the plant.
[in]	Beta_mu_inclination	The mean inclination angle parameter (Beta distribution).
[in]	Beta_nu_inclination	The shape parameter nu of the distribution (Beta distribution).
[in]	eccentricity	Eccentricity value for the ellipse defining the azimuth distribution.
[in]	ellipse_rotation_degrees	Rotation angle of the ellipse in degrees.

Definition at line 3196 of file PlantArchitecture.cpp.

setPlantLeafAzimuthAngleDistribution() [1/2]

void PlantArchitecture::setPlantLeafAzimuthAngleDistribution	(	const std::vector< uint > &	plantIDs,
		float	eccentricity,
		float	ellipse_rotation_degrees
	)		const

Sets the azimuth angle distribution of plant leaves.

This method modifies the azimuth angles of leaves in the plants such that they follow a Beta distribution. The methodology does not simply randomly sample angles from the Beta distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole canopy. This makes the transformed plants look as similar as possible to the original plants while still following the specified distribution. The more leaves in the canopy the more accurate the distribution will be, and the more the plants will look like the originals.

Parameters

[in]	plantIDs	List of plant IDs to which the angle distribution will be applied.
[in]	eccentricity	Eccentricity value for the ellipse defining the azimuth distribution.
[in]	ellipse_rotation_degrees	Rotation angle of the ellipse in degrees.

Definition at line 3188 of file PlantArchitecture.cpp.

setPlantLeafAzimuthAngleDistribution() [2/2]

void PlantArchitecture::setPlantLeafAzimuthAngleDistribution	(	uint	plantID,
		float	eccentricity,
		float	ellipse_rotation_degrees
	)		const

Sets the azimuth angle distribution for plant leaves.

This method modifies the azimuth angles of leaves in the plant such that they follow an ellipsoidal distribution. The methodology does not simply randomly sample angles from the ellipsoidal distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole plant. This makes the transformed plant look as similar as possible to the original plant while still following the specified distribution. The more leaves in the plant the more accurate the distribution will be, and the more the plant will look like the original.

Parameters

[in]	plantID	Identifier of the plant whose leaf azimuth angle distribution is being set.
[in]	eccentricity	Eccentricity value for the ellipse defining the azimuth distribution.
[in]	ellipse_rotation_degrees	Rotation angle of the ellipse in degrees.

Definition at line 3180 of file PlantArchitecture.cpp.

setPlantLeafElevationAngleDistribution() [1/2]

void PlantArchitecture::setPlantLeafElevationAngleDistribution	(	const std::vector< uint > &	plantIDs,
		float	Beta_mu_inclination,
		float	Beta_nu_inclination
	)		const

Sets the leaf elevation angle distribution for a list of plants.

This method modifies the elevation angles of leaves in the plants such that they follow a Beta distribution. The methodology does not simply randomly sample angles from the Beta distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole canopy. This makes the transformed plants look as similar as possible to the original plants while still following the specified distribution. The more leaves in the canopy the more accurate the distribution will be, and the more the plants will look like the originals.

Parameters

[in]	plantIDs	List of plant IDs for which to set the elevation angle distribution.
[in]	Beta_mu_inclination	Mean value parameter for the Beta distribution of inclination angles.
[in]	Beta_nu_inclination	Shape parameter for the Beta distribution of inclination angles.

Definition at line 3170 of file PlantArchitecture.cpp.

setPlantLeafElevationAngleDistribution() [2/2]

void PlantArchitecture::setPlantLeafElevationAngleDistribution	(	uint	plantID,
		float	Beta_mu_inclination,
		float	Beta_nu_inclination
	)		const

Sets the leaf elevation angle distribution for a specific plant.

This method modifies the elevation angles of leaves in the plant such that they follow a Beta distribution. The methodology does not simply randomly sample angles from the Beta distribution, but it uses the Hungarian algorithm to minimize the total amount of rotation applied for the whole plant. This makes the transformed plant look as similar as possible to the original plant while still following the specified distribution. The more leaves in the plant the more accurate the distribution will be, and the more the plant will look like the original.

Parameters

[in]	plantID	Identifier for the plant.
[in]	Beta_mu_inclination	Mean value parameter for the Beta distribution of inclination angles.
[in]	Beta_nu_inclination	Shape parameter for the Beta distribution of inclination angles.

Definition at line 3160 of file PlantArchitecture.cpp.

setPlantPhenologicalThresholds()

void PlantArchitecture::setPlantPhenologicalThresholds	(	uint	plantID,
		float	time_to_dormancy_break,
		float	time_to_flower_initiation,
		float	time_to_flower_opening,
		float	time_to_fruit_set,
		float	time_to_fruit_maturity,
		float	time_to_dormancy,
		float	max_leaf_lifespan = 1e6,
		bool	is_evergreen = false
	)

Specify the threshold values for plant phenological stages. All time values have units of days.

Parameters

[in]	plantID	ID of the plant.
[in]	time_to_dormancy_break	Length of the dormancy period.
[in]	time_to_flower_initiation	Time from emergence/dormancy required to reach flower creation (closed flowers).
[in]	time_to_flower_opening	Time from flower initiation to flower opening.
[in]	time_to_fruit_set	Time from flower opening required to reach fruit set (i.e., flower dies and fruit is created).
[in]	time_to_fruit_maturity	Time from fruit set date required to reach fruit maturity.
[in]	time_to_dormancy	Time from emergence/dormancy break required to enter the next dormancy period.
[in]	max_leaf_lifespan	[optional] Maximum lifespan of a leaf in days.
[in]	is_evergreen	[optional] True if the plant is evergreen (i.e., does not lose all leaves during senescence).

Note

Any phenological stage can be skipped by specifying a negative threshold value. In this case, the stage will be skipped and the threshold for the next stage will be relative to the previous stage.

Definition at line 4292 of file PlantArchitecture.cpp.

setSoftCollisionAvoidanceParameters()

void PlantArchitecture::setSoftCollisionAvoidanceParameters	(	float	view_half_angle_deg,
		float	look_ahead_distance,
		int	sample_count,
		float	inertia_weight
	)

Set collision avoidance parameters.

Parameters

[in]	view_half_angle_deg	Half-angle of the collision detection view cone in degrees (default = 80)
[in]	look_ahead_distance	How far ahead collisions will be considered in meters (default = 0.1)
[in]	sample_count	Number of directional samples within the cone (default = 256)
[in]	inertia_weight	Weight factor for directional inertia vs collision avoidance (0.0 = use optimal direction, 1.0 = ignore collision avoidance) (default = 0.4)

Definition at line 5333 of file PlantArchitecture.cpp.

setStaticObstacles()

void PlantArchitecture::setStaticObstacles

(

const std::vector< uint > &

target_UUIDs

)

Mark specific geometry as static for collision detection efficiency.

Parameters

[in]

target_UUIDs

Vector of primitive UUIDs representing static obstacles (buildings, fixed structures, etc.)

Definition at line 5350 of file PlantArchitecture.cpp.

sumPlantLeafArea()

float PlantArchitecture::sumPlantLeafArea

(

uint

plantID

)

const

Sum the one-sided leaf area of all leaves in the plant.

Parameters

[in]

plantID

ID of the plant instance.

Returns

Total one-sided leaf area of all leaves in the plant.

Definition at line 3239 of file PlantArchitecture.cpp.

updateAttractionPoints() [1/2]

void PlantArchitecture::updateAttractionPoints

(

const std::vector< helios::vec3 > &

attraction_points

)

Update attraction points positions (overwrites existing points)

Parameters

[in]

attraction_points

Updated vector of 3D positions that plants should grow toward

updateAttractionPoints() [2/2]

void PlantArchitecture::updateAttractionPoints	(	uint	plantID,
		const std::vector< helios::vec3 > &	attraction_points
	)

Update attraction points positions for a specific plant (overwrites existing points)

Parameters

[in]	plantID	Identifier of the plant to update attraction points for
[in]	attraction_points	Updated vector of 3D positions that the plant should grow toward

updateCurrentShootParameters() [1/2]

void PlantArchitecture::updateCurrentShootParameters

(

const std::map< std::string, ShootParameters > &

params

)

Update the parameters of all shoot types in the current plant model.

Parameters

[in]

params

Updated parameters structure for the shoot type.

Note

This will overwrite any existing shoot parameter definitions.

Definition at line 158 of file PlantLibrary.cpp.

updateCurrentShootParameters() [2/2]

void PlantArchitecture::updateCurrentShootParameters	(	const std::string &	shoot_type_label,
		const ShootParameters &	params
	)

Update the parameters of a single shoot type in the current plant model.

Parameters

[in]	shoot_type_label	User-defined label for the shoot type to be updated.
[in]	params	Updated parameters structure for the shoot type.

Note

This will overwrite any existing shoot parameter definitions.

Definition at line 154 of file PlantLibrary.cpp.

writePlantMeshVertices()

void PlantArchitecture::writePlantMeshVertices	(	uint	plantID,
		const std::string &	filename
	)		const

Write all vertices in the plant to a file for external processing (e.g., bounding volume, convex hull)

Parameters

[in]	plantID	ID of the plant instance.
[in]	filename	Name/path of the output file.

Definition at line 3465 of file PlantArchitecture.cpp.

writePlantStructureXML()

void PlantArchitecture::writePlantStructureXML	(	uint	plantID,
		const std::string &	filename
	)		const

Writes the structure of a plant instance to an XML file.

Parameters

[in]	plantID	The unique identifier for the plant instance.
[in]	filename	Path to the XML file where the plant structure will be saved.

Note

The function checks if the plant instance exists and if the output file path is valid and writable. Errors related to invalid plant ID or file issues will throw exceptions.

Definition at line 433 of file InputOutput.cpp.

writeQSMCylinderFile()

void PlantArchitecture::writeQSMCylinderFile	(	uint	plantID,
		const std::string &	filename
	)		const

Writes plant structure to TreeQSM cylinder format.

Writes the plant structure as a series of cylinders in the TreeQSM format. Each row represents one cylinder with columns for radius, length, start position, axis direction, parent ID, extension ID, branch ID, branch order, position in branch, mean absolute distance, surface coverage, added flag, and unmodified radius.

Parameters

[in]	plantID	Identifier of the plant to export.
[in]	filename	Path to the output file (typically .txt extension).

Exceptions

helios::runtime_error

Throws an error if the plant ID does not exist or if the file cannot be opened.

Note

The output follows the TreeQSM format (Raumonen et al., 2013) with tab-separated values.

Definition at line 512 of file InputOutput.cpp.

Friends And Related Symbol Documentation

Phytomer

friend struct Phytomer

friend

Definition at line 2654 of file PlantArchitecture.h.

Shoot

friend struct Shoot

friend

Definition at line 2655 of file PlantArchitecture.h.

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The documentation for this class was generated from the following files:

• plugins/plantarchitecture/include/PlantArchitecture.h
• plugins/plantarchitecture/src/CarbohydrateModel.cpp
• plugins/plantarchitecture/src/InputOutput.cpp
• plugins/plantarchitecture/src/PlantArchitecture.cpp
• plugins/plantarchitecture/src/PlantLibrary.cpp
• plugins/plantarchitecture/tests/selfTest.cpp