Public Member Functions | |
| ViewFrustum () | |
| Default constructor. | |
| ViewFrustum (const CameraOp &camera) | |
| Constructor by camera. | |
| ViewFrustum (ViewerContext *ctx, const Box &rect) | |
| void | update (const CameraOp &camera) |
| Update frustum plane in world coordinate according to camera data. | |
| void | update (const CameraOp &camera, const Matrix4 &m) |
| Update frustum plane according to Matrix4 transformation. | |
| const Plane & | getPlane (FrustumPlane plane) const |
| Get a frustum plane. | |
| FrustumVisibility | getVisibility (const PointList *plist) const |
| Test the visibility of a polygon inside a list of coplanar vertices. | |
| FrustumVisibility | getVisibility (const Vector3 *points, const Primitive *prim, unsigned face) const |
| Test the visibility a primitive face. | |
View Frustum class. Define the camera view frustum with a list of planes. A plane is defined in world coordinate. It is used to determine polygon visibility.
| DD::Image::ViewFrustum::ViewFrustum | ( | ViewerContext * | ctx, |
| const Box & | rect | ||
| ) |
Construct a frustum using the 2D rectangle projected onto the camera's near and far clipping planes.
References DD::Image::Box::r(), DD::Image::Box::t(), DD::Image::ViewerContext::viewport(), DD::Image::Box::x(), and DD::Image::Box::y().