Method updateTransform

CrossApp/view/CAView.cpp:1684–1765

}

void CAView::updateTransform()
{
    // Recursively iterate over children
    if(m_pobImage && isDirty() )
    {
        
        // If it is not visible, or one of its ancestors is not visible, then do nothing:
        if( !m_bVisible || ( m_pSuperview && m_pSuperview != m_pobBatchView && m_pSuperview->m_bShouldBeHidden) )
        {
            m_sQuad.br.vertices = m_sQuad.tl.vertices = m_sQuad.tr.vertices = m_sQuad.bl.vertices = vertex3(0,0,0);
            m_bShouldBeHidden = true;
        }
        else
        {
            m_bShouldBeHidden = false;
            
            if( !m_pSuperview || m_pSuperview == m_pobBatchView)
            {
                m_transformToBatch = viewToSuperviewTransform();
            }
            else
            {
                m_transformToBatch = CATransformationConcat( viewToSuperviewTransform() , m_pSuperview->m_transformToBatch );
            }

            DSize size = m_obContentSize;
            
            float x1 = 0;
            float y1 = 0;
            
            float x = m_transformToBatch.tx;
            float y = m_transformToBatch.ty;
            
            float cr = m_transformToBatch.a;
            float sr = m_transformToBatch.b;
            float cr2 = m_transformToBatch.d;
            float sr2 = -m_transformToBatch.c;
            
            x1 = x1 * cr - y1 * sr2 + x;
            y1 = x1 * sr + y1 * cr2 + y;
            
            x1 = RENDER_IN_SUBPIXEL(x1);
            y1 = RENDER_IN_SUBPIXEL(y1);
            
            float x2 = x1 + size.width;
            float y2 = y1 + size.height;

            m_sQuad.bl.vertices = vertex3( x1, y1, m_fVertexZ );
            m_sQuad.br.vertices = vertex3( x2, y1, m_fVertexZ );
            m_sQuad.tl.vertices = vertex3( x1, y2, m_fVertexZ );
            m_sQuad.tr.vertices = vertex3( x2, y2, m_fVertexZ );
        }
        
        if (m_pobImageAtlas)
		{
            m_pobImageAtlas->updateQuad(&m_sQuad, m_uAtlasIndex);
        }