void VRegion::FromRect (const VRect& inRect)
{
_Release();
#if !USE_GDIPLUS
#if DEBUG_GDI_LIMITS
assert(inRect.GetWidth() <= kMAX_GDI_RGN_COORD);
assert(inRect.GetHeight() <= kMAX_GDI_RGN_COORD);
#endif
VRect bounds(inRect);
bounds.NormalizeToInt(); //normalize to prevent artifacts due to invalidating or clipping region being cropped down
// Make sure region isn't too big for GDI
sLONG newWidth = Min((sLONG)bounds.GetWidth(), (sLONG)kMAX_GDI_RGN_COORD);
sLONG newHeight = Min((sLONG)bounds.GetHeight(), (sLONG)kMAX_GDI_RGN_COORD);
fRegion = ::CreateRectRgn(0, 0, newWidth, newHeight);
fOffset.SetPosTo(bounds.GetX(), bounds.GetY());
#else
Gdiplus::RectF r(inRect.GetX(),inRect.GetY(),inRect.GetWidth(),inRect.GetHeight());
fRegion = new Gdiplus::Region(r);
#endif
_ComputeBounds();
}
void VRect::Intersect (const VRect& inRect)
{
GReal newLeft = Max(fX, inRect.GetX());
GReal newTop = Max(fY, inRect.GetY());
GReal newRight = Min(GetRight(), inRect.GetRight());
GReal newBottom = Min(GetBottom(), inRect.GetBottom());
if (newRight > newLeft && newBottom > newTop)
SetCoords(newLeft, newTop, newRight - newLeft, newBottom - newTop);
else
SetCoords(0, 0, 0, 0);
}
