SoXtCollisionViewer Class Reference
[Collision]
Class to manage collisions between the camera and the scene.
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#include <Inventor/Xt/viewers/SoXtCollisionViewer.h>
Public Member Functions | |
| SoXtCollisionViewer (SoXtViewer *viewer) | |
| ~SoXtCollisionViewer () | |
| SoXtViewer * | getViewer () |
| void | setDistance (float distance) |
| float | getDistance () const |
| void | setNumSteps (int num_steps) |
| int | getNumSteps () const |
| void | setCollisionDetection (SbBool value=TRUE) |
| SbBool | getCollisionDetection () const |
| void | setZBufferOptimization (SbBool value=TRUE, SbBool useZBufferOnly=FALSE) |
| SbBool | getZBufferOptimistation () const |
| void | addCallback (SoXtCollisionViewerCB *f, void *ud=NULL) |
| void | removeCallback (SoXtCollisionViewerCB *f, void *ud=NULL) |
Detailed Description
Class to manage collisions between the camera and the scene.
This class is used to constrain a viewer, preventing the viewer's camera from colliding with the objects in the scene. It overrides the RenderCallback on the viewer that it's attached to.
The programmer can define the maximum distance between the camera and the objects.
When Z-buffer optimization is enabled, the algorithm looks at the Z-buffer to see if there is an object in front of the camera when the user moves forward, and an SoIntersectionDetectionAction when the user moves backward.
NOTE: This class is not a viewer.
SEE ALSO
SoCollisionManager, SoIntersectionDetectionAction
- See related examples:
Constructor & Destructor Documentation
| SoXtCollisionViewer::SoXtCollisionViewer | ( | SoXtViewer * | viewer | ) |
Constructor.
| SoXtCollisionViewer::~SoXtCollisionViewer | ( | ) |
Destructor.
Member Function Documentation
| void SoXtCollisionViewer::addCallback | ( | SoXtCollisionViewerCB * | f, | |
| void * | ud = NULL | |||
| ) |
Adds a callback.
This callback is called when a collision occurs between the camera and the scene.
| SbBool SoXtCollisionViewer::getCollisionDetection | ( | ) | const |
Gets the collision detection flag.
| float SoXtCollisionViewer::getDistance | ( | ) | const |
Gets the distance between the camera and the objects.
| int SoXtCollisionViewer::getNumSteps | ( | ) | const |
Gets the number of steps to be used in the collision computation.
| SoXtViewer* SoXtCollisionViewer::getViewer | ( | ) |
Gets the original viewer.
| SbBool SoXtCollisionViewer::getZBufferOptimistation | ( | ) | const |
Gets the Z buffer optimization flag.
| void SoXtCollisionViewer::removeCallback | ( | SoXtCollisionViewerCB * | f, | |
| void * | ud = NULL | |||
| ) |
Removes the callback.
| void SoXtCollisionViewer::setCollisionDetection | ( | SbBool | value = TRUE |
) |
Sets the collision detection flag.
The default value is TRUE.
| void SoXtCollisionViewer::setDistance | ( | float | distance | ) |
Sets the distance between the camera and the objects.
| void SoXtCollisionViewer::setNumSteps | ( | int | num_steps | ) |
Sets the number of steps to be used in the collision computation.
The default number of steps is 4. The minimum value is 2.
| void SoXtCollisionViewer::setZBufferOptimization | ( | SbBool | value = TRUE, |
|
| SbBool | useZBufferOnly = FALSE | |||
| ) |
Sets the Z buffer optimization flag.
The default value is TRUE.
Also sets the useZBufferOnly flag. When this flag is TRUE, the geometric collision detection algorithm is never used. Therefore there is no collision check when the camera is moving backward, but this may be desireable for large scenes when this check is too slow.
The documentation for this class was generated from the following file:
- Inventor/Xt/viewers/SoXtCollisionViewer.h