Network, Computer and Programming Resources

Opengl - Clipping

Elimination of the portion of a geometric primitive that's outside the half-space defined by a clipping plane. Points are simply rejected if outside. The portion of a line or of a polygon that's outside the half-space is eliminated, and additional vertices are generated as necessary to complete the primitive within the clipping half-space. Geometric primitives and the current raster position (when specified) are always clipped against the six half-spaces defined by the left, right, bottom, top, near, and far planes of the view volume. Applications can specify optional application-specific clipping planes to be applied in eye coordinates.