TQADrawTriMeshGouraud

QuickDraw 3D RAVE / QuickDraw 3D RAVE Reference

QuickDraw 3D RAVE Routines / Public Draw Context Methods

TQADrawTriMeshGouraud
A drawing engine may define a method to draw a triangle mesh with Gouraud shading.
typedef void (*TQADrawTriMeshGouraud) (
                                       const TQADrawContext *drawContext,
                                       unsigned long nTriangles,
                                       const TQAIndexedTriangle *triangles);
drawContext
A draw context.
nTriangle
The number of indexed triangles pointed to by the triangles parameter.
triangles
A pointer to an array of indexed triangles. See "Indexed Triangle Structure" (page 1-80) for a description of indexed triangles.

DESCRIPTION
Your TQADrawTriMeshGouraud function should draw, with Gouraud shading, the triangle mesh specified by the triangles parameter into the draw context specified by the drawContext parameter. Each triangle in the mesh is defined by a TQAIndexedTriangle data structure, which contains three indices into the array of Gouraud vertices previously submitted to the draw context by a call to the QASubmitVerticesGouraud function.

SPECIAL CONSIDERATIONS
The TQADrawTriMeshGouraud method is optional. If your drawing engine does not support triangle meshes, QuickDraw 3D RAVE decomposes a triangle mesh into individual triangles when the user calls the QASubmitVerticesGouraud function to submit a triangle mesh.