/*
* generates and stores a depth image rom a z buffer for use in spacial calculations
* this is pretty expensive
*/
public void setDepthImageFromZ(float[] value)
{
if (cam == null)
{
return;
}
if (depthBuffer == null || depthBuffer.Length != value.Length)
{
depthBuffer = new float[value.Length];
}
for (int i = 0; i < depthBuffer.Length; ++i)
{
depthBuffer[i] = UDUtilities.zBufferToDepth(depthBuffer[i], cam.nearClipPlane, cam.farClipPlane, false);
}
}
/*
* converts the z buffer value to a world space displacement
*/
float zBufferToDepth(float z)
{
return(UDUtilities.zBufferToDepth(z, zNear, zFar));
}