Method onPreRender

radiantcore/patch/PatchNode.cpp:349–383

}

void PatchNode::onPreRender(const VolumeTest& volume)
{
    // Defer the tesselation calculation to the last minute
    m_patch.evaluateTransform();
    m_patch.updateTesselation();

    if (m_patch.getWidth() > 0 && m_patch.getHeight() > 0)
    {
        _renderableSurfaceSolid.update(m_patch._shader.getGLShader());
        _renderableSurfaceWireframe.update(getRenderState() == RenderState::Active ? 
            _renderEntity->getWireShader() : _inactiveShader);
        _renderableSurfaceSolid.attachToEntity(_renderEntity);
    }
    else
    {
        _renderableSurfaceSolid.clear();
        _renderableSurfaceWireframe.clear();
    }

    if (isSelected() && GlobalSelectionSystem().ComponentMode() == selection::ComponentSelectionMode::Vertex)
    {
        // Selected patches in component mode render the lattice connecting the control points
        _renderableCtrlLattice.update(_ctrlLatticeShader);
        _renderableCtrlPoints.update(_ctrlPointShader);
    }
    else
    {
        _renderableCtrlPoints.hide();
        _renderableCtrlLattice.hide();

        // Queue an update the next time it's rendered
        _renderableCtrlPoints.queueUpdate();
        _renderableCtrlLattice.queueUpdate();
    }
}

void PatchNode::renderHighlights(IRenderableCollector& collector, const VolumeTest& volume)
{