void CC3Billboard::populateAsBoundingRectangle()
{
CC3Vector* vertices; // Array of simple vertex location data
// Start with default initial values
GLfloat xMin = 0.0f;
GLfloat xMax = 1.0f;
GLfloat yMin = 0.0f;
GLfloat yMax = 1.0f;
int vCount = 4;
CC3VertexLocations* locArray = CC3VertexLocations::vertexArray();
locArray->setDrawingMode( GL_TRIANGLE_STRIP ); // Location array will do the drawing as a strip
locArray->setVertexStride( 0 ); // Tightly packed locations only
locArray->setElementOffset( 0 ); // Only locations
locArray->setAllocatedVertexCapacity( vCount );
vertices = (CC3Vector*)locArray->getVertices();
// Populate vertex locations in the X-Y plane
vertices[0] = cc3v(xMax, yMax, 0.0f);
vertices[1] = cc3v(xMin, yMax, 0.0f);
vertices[2] = cc3v(xMax, yMin, 0.0f);
vertices[3] = cc3v(xMin, yMin, 0.0f);
// Create mesh with vertex location array
CC3Mesh* aMesh = CC3Mesh::mesh();
aMesh->setVertexLocations( locArray );
setMesh( aMesh );
updateBoundingMesh();
}
void CC3ShadowVolumeMeshNode::createShadowMesh()
{
GLuint vertexCount = getShadowCaster()->getVertexCount();
// Create vertexLocation array.
CC3VertexLocations* locArray = CC3VertexLocations::vertexArray();
locArray->setDrawingMode( GL_TRIANGLES );
locArray->setElementSize( 4 ); // We're using homogeneous coordinates!
locArray->setAllocatedVertexCapacity( vertexCount );
locArray->setVertexCount( 0 ); // Will be populated dynamically
locArray->setShouldReleaseRedundantContent( false ); // Shadow vertex data is dynamic
CC3Mesh* aMesh = CC3Mesh::mesh();
aMesh->setVertexLocations( locArray );
setMesh( aMesh );
}
