D3DDDIARG_SETCLIPPLANE structure (d3dumddi.h)

The D3DDDIARG_SETCLIPPLANE structure describes a clip plane.

Syntax

typedef struct _D3DDDIARG_SETCLIPPLANE {
  [in] UINT  Index;
       FLOAT Plane[4];
} D3DDDIARG_SETCLIPPLANE;

Members

[in] Index

The index of the clipping plane for which the plane equation coefficients are set.

[in] Plane[4]

A four-element array of the coefficients A, B, C, and D, in that order, in the general plane equation for the clipping plane.

Remarks

The general plane equation in standard form is Ax + By + Cz + Dw = 0. A point with homogeneous coordinates (x, y, z, w) is visible in the half-space of this plane if Ax + By + Cz + Dw >= 0. Points that exist on or behind the clipping plane are clipped from the scene. That is, points for which Ax + By + Cz + Dw < 0 are clipped.

Requirements

See also

SetClipPlane