Unigine::Plugins::IG::CollisionVolume Class
| Header: | #include <plugins/Unigine/IG/UnigineIG.h> |
This class is used to manage collision volumes that are assigned to entities and used for collision detection.
Notice
IG plugin must be loaded.
A collision detection volume is a sphere or a cuboid through which collision testing is performed by the IG. When a collision detection volume passes through another collision volume, the IG registers a collision by sending the corresponding notification.
Notice
Collision detection testing is performed by the IG every frame.
A volume is defined by specifying its location, size, and orientation with respect to the associated entity’s body coordinate system. A sphere’s size is specified as a radius; a cuboid’s size is specified by its width, height, and depth.
Unlike collision detection segments, which are tested segment-to-polygon, collision detection volumes are tested volume-to-volume. Volumes associated with the same entity are not tested against each other.
CollisionVolume Class
Members
int getID ( ) const#
Returns the ID of the collision volume.Return value
Collision volume ID.Entity * getEntity ( ) const#
Returns the entity to which the collision volume is assigned.Return value
Entity to which the collision volume is assigned.void setEnabled ( bool value ) #
Enables or disables the collision volume.Arguments
- bool value - true to enable the collision volume; false - to disable it.
bool isEnabled ( ) const#
Returns a value indicating if the collision volume is enabled.Return value
true if the collision volume is enabled; otherwise, falsevoid setPosition ( const Math::vec3& value ) #
Sets the coordinates of the center of the collision volume.Arguments
- const Math::vec3& value - Coordinates of the center of the collision volume, in the coordinate system of the entity.
Math::vec3 getPosition ( ) const#
Returns the current coordinates of the center of the collision volume.Return value
Current coordinates of the center of the collision volume, in the coordinate system of the entity.void setRotation ( const Math::quat& value ) #
Sets the rotation of the cuboid-shaped collision volume. The rotation quaternion is obtained by converting NED euler rotation (roll, pitch, yaw) to a quaternion via the Converter::eulerNEDToRotation() method.Arguments
- const Math::quat& value - Quaternion defining rotation of the cuboid-shaped collision volume.
Math::quat getRotation ( ) const#
Returns the current rotation of the cuboid-shaped collision volume. You can convert the obtained rotation quaternion to NED euler rotation (roll, pitch, yaw) via the Converter::rotationToEulerNED() method.Return value
Quaternion defining rotation of the cuboid-shaped collision volume.void setSize ( const Math::vec3& size ) #
Sets the size of the cuboid-shaped collision volume.Arguments
- const Math::vec3& size - Vector defining the size of the cuboid-shaped collision volume (depth, width, height). Each component is specified in meters.
void setRadius ( float radius ) #
Sets the radius of the spherical collision volume.Arguments
- float radius - Radius of the spherical collision volume, in meters.
void * addOnCollisionDetectedCallback ( Unigine::CallbackBase4< CollisionVolume *, Ptr<ShapeContact>, long long, int > * func ) #
Adds a callback function to be called when a collision with the collision volume is detected. This function can be used to define specific actions to be performed when a collision with the volume is detected. The signature of the callback function must be as follows:Source code (C++)
void(CollisionVolume *v, ContactPtr cnt, long long contacted_entity, int contacted_segment);You can set a callback function as follows:
Source code (C++)
addOnCollisionDetectedCallback(MakeCallback(collision_callback_function_name));Example: Setting a collision detected callback for a collision volume of an entity
Source code (C++)
/// callback function to be called when a collision with the collision volume is detected
void my_callback(CollisionVolume *v, ShapeContactPtr cnt, long long contacted_entity, int contacted_segment)
{
// your code
}
// ...
// somewhere in code
void SomeClass::init()
{
// adding "my_callback" to be called when a collision with the volume is detected
ig_manager->getEntity(entity_id)->getCollisionVolume(volume_id)->addOnCollisionDetectedCallback(Unigine::MakeCallback( my_callback );
}Arguments
- Unigine::CallbackBase4< CollisionVolume *, Ptr<ShapeContact>, long long, int > * func - Callback function.
Return value
ID of the last added collision detected callback, if the callback was added successfully; otherwise, nullptr. This ID can be used to remove this callback when necessary.bool removeOnCollisionDetectedCallback ( void * id ) #
Removes the specified callback from the list of collision detected callbacks.Arguments
- void * id - Collision detected callback ID obtained when adding it.
Return value
True if the collision detected callback with the given ID was removed successfully; otherwise false.void clearOnCollisionDetectedCallbacks ( ) #
Clears all added collision detected callbacks.void setName ( const char * value ) #
Sets a new name for the collision volume.Arguments
- const char * value - Collision volume name to be set.
const char * getName ( ) const#
Returns the name of the collision volume.Return value
Collision volume name.Last update:
13.12.2024
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