oCOSMO Cosmo 3DTM Manual

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Back Patch Culling

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Back Patch Culling Code

Now that you understand all the facets of back patch culling, Example 14-1 presents the

series of calls your application must make to implement back patch culling.

Example 14-1 Implementing Back Face Culling

// Create a draw action.

csDrawAction *drawAction = new csDrawAction;

...

// Set the back patch culling mode.

drawAction->setBPCullMode(csDrawAction::DRAW_FRONT_FACING);

// Build scene graph.

csNode *scene = new csNode;

...

// Build back patch culling data for scene graph by using

// csGeoSet::buildBPCullData() in the following developer-supplied

// method.

buildBPCullSceneData(scene);

// Apply the draw action to the scene graph.

drawAction->apply(scene);