void ClippingRectangleNode::onBeforeVisitScissor()
{
if (_clippingEnabled) {
// record old ClipRegion
GLView* glView = Director::getInstance()->getOpenGLView();
if (glView->isScissorEnabled()) {
_preClipRegion = glView->getScissorRect();
} else {
_preClipRegion = Rect::ZERO;
}
glEnable(GL_SCISSOR_TEST);
float scaleX = _scaleX;
float scaleY = _scaleY;
Node *parent = this->getParent();
while (parent) {
scaleX *= parent->getScaleX();
scaleY *= parent->getScaleY();
parent = parent->getParent();
}
// push this ClipRegion
const Point pos = convertToWorldSpace(Point(_clippingRegion.origin.x, _clippingRegion.origin.y));
glView->setScissorInPoints(pos.x,
pos.y,
_clippingRegion.size.width * scaleX,
_clippingRegion.size.height * scaleY);
}
}
void ClippingRectangleNode::onAfterVisitScissor()
{
if (_clippingEnabled)
{
// rollback to old ClipRegion
if (_preClipRegion.size.width > 0) {
GLView* glView = Director::getInstance()->getOpenGLView();
glView->setScissorInPoints(_preClipRegion.origin.x,
_preClipRegion.origin.y,
_preClipRegion.size.width,
_preClipRegion.size.height);
} else {
glDisable(GL_SCISSOR_TEST);
}
}
}
void ClippingRectangleNode::onBeforeVisitScissor()
{
if (_clippingEnabled) {
glEnable(GL_SCISSOR_TEST);
float scaleX = _scaleX;
float scaleY = _scaleY;
Node *parent = this->getParent();
while (parent) {
scaleX *= parent->getScaleX();
scaleY *= parent->getScaleY();
parent = parent->getParent();
}
const Point pos = convertToWorldSpace(Point(_clippingRegion.origin.x, _clippingRegion.origin.y));
GLView* glView = Director::getInstance()->getOpenGLView();
glView->setScissorInPoints(pos.x,
pos.y,
_clippingRegion.size.width * scaleX,
_clippingRegion.size.height * scaleY);
}
}