The WindPhysicsModel node specifies a physics model that applies a wind effect to the particles. More...
#include <H3D/WindPhysicsModel.h>
Public Member Functions | |
| WindPhysicsModel (Inst< SFNode > _metadata=0, Inst< SFBool > _enabled=0, Inst< SFVec3f > _direction=0, Inst< SFFloat > _gustiness=0, Inst< SFFloat > _speed=0, Inst< SFFloat > _turbulence=0) | |
| Constructor. | |
| virtual void | traverseSG (TraverseInfo &ti) |
| Traverse the scene graph. Updates the wind_speed member. | |
 Public Member Functions inherited from H3D::X3DParticlePhysicsModelNode | |
| X3DParticlePhysicsModelNode (Inst< SFNode > _metadata=0, Inst< SFBool > _enabled=0) | |
| Constructor. | |
| virtual string | defaultXMLContainerField () |
| Returns the default xml containerField attribute value. More... | |
| Public Member Functions inherited from H3D::X3DNode | |
| X3DNode (Inst< SFNode > _metadata=0) | |
| Constructor. | |
| X3DMetadataObject * | getMetadataByName (const string &_name) |
| Given a name, the first X3DMetadataObject in the metadata field that matches that name is returned. More... | |
| Public Member Functions inherited from H3D::Node | |
| Node () | |
| Constructor. | |
| virtual Node * | clone (bool deepCopy=true, DeepCopyMap *deepCopyMap=NULL) |
| Returns a new instance of this node type with the same state as this one. More... | |
| virtual | ~Node () |
| Destructor. | |
| X3DPrototypeInstance * | getProtoInstanceParent () |
| If this node is the root node in the proto body of a X3DPrototypeInstance then this will return that node. More... | |
| void | setProtoInstanceParent (X3DPrototypeInstance *p) |
| Set the X3DPrototypeInstance this node is the the root node if applicaple. | |
| virtual void | render () |
| the render() function is used for the depth-first rendering traversal of the scene-graph. More... | |
| virtual bool | lineIntersect (const Vec3f &from, const Vec3f &to, LineIntersectResult &result) |
| Detect intersection between a line segment and the Node. More... | |
| virtual void | closestPoint (const Vec3f &p, NodeIntersectResult &result) |
| Find closest point on Node to p. More... | |
| virtual bool | movingSphereIntersect (H3DFloat radius, const Vec3f &from, const Vec3f &to, NodeIntersectResult &result) |
| Detect collision between a moving sphere and the Node. More... | |
| virtual Field * | getField (const string &_name) const |
| return a pointer to the field specified by name within this instance | |
| int | addDestructCallback (void(*func)(Node *, void *), void *args) |
| Add a callback function to be run on destruction of node. More... | |
| int | removeDestructCallback (void(*func)(Node *, void *), void *args) |
| Add a callback function to be run on destruction of node. More... | |
Public Attributes | |
| H3DUniquePtr< SFVec3f > | direction |
| The direction field specifies the direction in which the wind is travelling in the form of a normalized, unit vector. More... | |
| H3DUniquePtr< SFFloat > | gustiness |
| The gustiness specifies how much the wind speed varies from the average value defined by the speed field. More... | |
| H3DUniquePtr< SFFloat > | speed |
| The speed field specifies the current wind speed in metres per second. More... | |
| H3DUniquePtr< SFFloat > | turbulence |
| The turbulence field specifies how much the wind acts directly in line with the direction, and how much variation is applied in directions other than the wind direction. More... | |
| Public Attributes inherited from H3D::X3DParticlePhysicsModelNode | |
| H3DUniquePtr< SFBool > | enabled |
| The enabled field specifies whether this physics model is currently being applied to the particles. More... | |
| Public Attributes inherited from H3D::X3DNode | |
| H3DUniquePtr< SFNode > | metadata |
| Meta data about the node. More... | |
Static Public Attributes | |
| static H3DNodeDatabase | database |
| The H3DNodeDatabase for this node. | |
| Static Public Attributes inherited from H3D::X3DParticlePhysicsModelNode | |
| static H3DNodeDatabase | database |
| The H3DNodeDatabase for this node. | |
| Static Public Attributes inherited from H3D::X3DNode | |
| static H3DNodeDatabase | database |
| The H3DNodeDatabase for this node. | |
Protected Attributes | |
| H3DFloat | wind_speed |
| The wind speed updated once per frame with gustiness taken into consideration. | |
Additional Inherited Members | |
| Public Types inherited from H3D::Node | |
| typedef std::map< Node *, Node * > | DeepCopyMap |
| A map type used during a deep copy clone() to map from original nodes to cloned nodes. | |
| Static Public Member Functions inherited from H3D::Node | |
| static unsigned int | nrNodesAlive () |
| Returns the nr of nodes currently alive, i.e. nodes created but not destructed. | |
| static int | nrNodesCreated () |
| Returns the number of nodes created in total since the start of the program. | |
| Protected Member Functions inherited from H3D::Node | |
| void | cloneFieldValue (Field &_from, Field &_to, bool deepCopy, DeepCopyMap &deepCopyMap) |
| A helper function for the clone() method. More... | |
| Static Protected Member Functions inherited from H3D::Node | |
| static Node * | getClonedInstance (Node *original, bool deepCopy, DeepCopyMap &deepCopyMap) |
| A helper function for nodes that implement clone() More... | |
Detailed Description
The WindPhysicsModel node specifies a physics model that applies a wind effect to the particles.
The wind has a random variation factor that allows for the gustiness of the wind to be modelled.
The direction field specifies the direction in which the wind is travelling in the form of a normalized, unit vector.
The speed field specifies the current wind speed in metres per second. From the wind speed, the force applied per unit-area on the particle is calculated using the following formula:
pressure = 10(2 × log(speed)) × 0.64615
The gustiness specifies how much the wind speed varies from the average value defined by the speed field. The wind speed variation is calculated once per frame and applied equally to all particles.
The turbulence field specifies how much the wind acts directly in line with the direction, and how much variation is applied in directions other than the wind direction. This is determined per-particle to model how the particle is effected by turbulence.
Examples:
Member Data Documentation
◆ direction
| H3DUniquePtr< SFVec3f > H3D::WindPhysicsModel::direction |
The direction field specifies the direction in which the wind is travelling in the form of a normalized, unit vector.
Access type: inputOutput
Default value: Vec3f( 0, 0, 0 )
Referenced by WindPhysicsModel().
◆ gustiness
| H3DUniquePtr< SFFloat > H3D::WindPhysicsModel::gustiness |
The gustiness specifies how much the wind speed varies from the average value defined by the speed field.
The wind speed variation is calculated once per frame and applied equally to all particles.
Access type: inputOutput
Default value: 0.1
Valid range: [0, inf)
Referenced by traverseSG(), and WindPhysicsModel().
◆ speed
| H3DUniquePtr< SFFloat > H3D::WindPhysicsModel::speed |
The speed field specifies the current wind speed in metres per second.
Access type: inputOutput
Default value: 0.1
Valid range: [0, inf)
Referenced by traverseSG(), and WindPhysicsModel().
◆ turbulence
| H3DUniquePtr< SFFloat > H3D::WindPhysicsModel::turbulence |
The turbulence field specifies how much the wind acts directly in line with the direction, and how much variation is applied in directions other than the wind direction.
This is determined per-particle to model how the particle is effected by turbulence.
Access type: inputOutput
Default value: 0
Valid range: [0,1]
Referenced by WindPhysicsModel().
The documentation for this class was generated from the following files:
