void CompoundUpdateOutputVisitor::_updateZoom(const Compound* compound,
Frame* frame)
{
Zoom zoom = frame->getNativeZoom();
Zoom zoom_1;
if (!zoom.isValid()) // if zoom is not set, auto-calculate from parent
{
zoom_1 = compound->getInheritZoom();
LBASSERT(zoom_1.isValid());
zoom.x() = 1.0f / zoom_1.x();
zoom.y() = 1.0f / zoom_1.y();
}
else
{
zoom_1.x() = 1.0f / zoom.x();
zoom_1.y() = 1.0f / zoom.y();
}
if (frame->getType() == Frame::TYPE_TEXTURE)
{
FrameData* frameData = frame->getMasterData();
frameData->setZoom(zoom_1); // textures are zoomed by input frame
frame->setZoom(Zoom::NONE);
}
else
{
Zoom inputZoom;
/* Output frames downscale pixel data during readback, and upscale it on
* the input frame by setting the input frame's inherit zoom. */
if (zoom.x() > 1.0f)
{
inputZoom.x() = zoom_1.x();
zoom.x() = 1.f;
}
if (zoom.y() > 1.0f)
{
inputZoom.y() = zoom_1.y();
zoom.y() = 1.f;
}
FrameData* frameData = frame->getMasterData();
frameData->setZoom(inputZoom);
frame->setZoom(zoom);
}
}
