DD::Image::ViewFrustum Class Reference

#include <ViewFrustum.h>

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.

Detailed Description

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.

Constructor & Destructor Documentation

ViewFrustum()

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().