Method PushDepthRange

trinity/Sprite2d/Tr2Sprite2dScene.cpp:445–470

}

void Tr2Sprite2dScene::PushDepthRange( float depthMin, float depthMax )
{
	//CCP_STATS_ZONE( __FUNCTION__ );

	if( m_is2dRenderContext )
	{
		return;
	}

	CCP_ASSERT( depthMin >= -1.0f );
	CCP_ASSERT( depthMin <= 1.0f );
	CCP_ASSERT( depthMax >= -1.0f );
	CCP_ASSERT( depthMax <= 1.0f );

	// To simplify the code below the stack is primed with scene values for depth range
	CCP_ASSERT( !m_depthStack->empty() );

	// Relative range is from -1 to 1
	float normDepthMin = 0.5f * ( depthMin + 1.0f );
	float normDepthMax = 0.5f * ( depthMax + 1.0f );

	const Vector2& currentDepthValues = m_depthStack->back();
	float depthRange = currentDepthValues.y - currentDepthValues.x;
	Vector2 range( currentDepthValues.x + depthRange * normDepthMin, currentDepthValues.x + depthRange * normDepthMax );
	m_depthStack->push_back( range );
}

void Tr2Sprite2dScene::PopDepthRange()
{