Add a new core::rect constructor which takes a dimension parameter and set's left-top to 0.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5036 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
 
+- Add a new core::rect constructor which takes a dimension parameter and set's left-top to 0.
 - mtl (obj) format reader and write now regards texture scaling and translation. (thx @thanhle for noticing and patch proposal).
 - Added Visual Studio 2013 project files.
 - Added ability to set custom depth/stencil texture for render targets.

include/rect.h

@@ -43,6 +43,11 @@ namespace core
 		rect(const position2d<T>& pos, const dimension2d<U>& size)
 			: UpperLeftCorner(pos), LowerRightCorner(pos.X + size.Width, pos.Y + size.Height) {}
 
+		//! Constructor with upper left at 0,0 and lower right using dimension
+		template <class U>
+		explicit rect(const dimension2d<U>& size)
+			: UpperLeftCorner(0,0), LowerRightCorner(size.Width, size.Height) {}
+
 		//! move right by given numbers
 		rect<T> operator+(const position2d<T>& pos) const
 		{

source/Irrlicht/CGUIEnvironment.cpp

@@ -57,7 +57,7 @@ const io::path CGUIEnvironment::DefaultFontName = "#DefaultFont";
 
 //! constructor
 CGUIEnvironment::CGUIEnvironment(io::IFileSystem* fs, video::IVideoDriver* driver, IOSOperator* op)
-: IGUIElement(EGUIET_ROOT, 0, 0, 0, core::rect<s32>(core::position2d<s32>(0,0), driver ? core::dimension2d<s32>(driver->getScreenSize()) : core::dimension2d<s32>(0,0))),
+: IGUIElement(EGUIET_ROOT, 0, 0, 0, core::rect<s32>(driver ? core::dimension2d<s32>(driver->getScreenSize()) : core::dimension2d<s32>(0,0))),
 	Driver(driver), Hovered(0), HoveredNoSubelement(0), Focus(0), LastHoveredMousePos(0,0), CurrentSkin(0),
 	FileSystem(fs), UserReceiver(0), Operator(op), FocusFlags(EFF_SET_ON_LMOUSE_DOWN|EFF_SET_ON_TAB)
 {
@@ -1016,8 +1016,7 @@ void CGUIEnvironment::deserializeAttributes(io::IAttributes* in, io::SAttributeR
 	}
 
 	RelativeRect = AbsoluteRect =
-			core::rect<s32>(core::position2d<s32>(0,0),
-			Driver ? core::dimension2di(Driver->getScreenSize()) : core::dimension2d<s32>(0,0));
+			core::rect<s32>(Driver ? core::dimension2di(Driver->getScreenSize()) : core::dimension2d<s32>(0,0));
 }
 
 
@@ -1399,7 +1398,7 @@ IGUIInOutFader* CGUIEnvironment::addInOutFader(const core::rect<s32>* rectangle,
 	if (rectangle)
 		rect = *rectangle;
 	else if (Driver)
-		rect = core::rect<s32>(core::position2d<s32>(0,0), core::dimension2di(Driver->getScreenSize()));
+		rect = core::rect<s32>(core::dimension2di(Driver->getScreenSize()));
 
 	if (!parent)
 		parent = this;

source/Irrlicht/CGUIImage.cpp

@@ -81,7 +81,7 @@ void CGUIImage::draw()
 		core::rect<s32> sourceRect(SourceRect);
 		if (sourceRect.getWidth() == 0 || sourceRect.getHeight() == 0)
 		{
-			sourceRect = core::rect<s32>(core::position2d<s32>(0,0), core::dimension2di(Texture->getOriginalSize()));
+			sourceRect = core::rect<s32>(core::dimension2di(Texture->getOriginalSize()));
 		}
 
 		if (ScaleImage)