X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fwindingtest.h;fp=source%2Fwindingtest.h;h=948f190b801ec34122d450f20a9b9b068eb654d1;hb=635d00bc1a9ba43ef1224681a14d0710a098cf87;hp=0000000000000000000000000000000000000000;hpb=0e8ffd3b59e9b5c52c66c22c9ae4f9d3544aa6bf;p=libs%2Fgl.git

diff --git a/source/windingtest.h b/source/windingtest.h
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+++ b/source/windingtest.h
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+/* $Id$
+
+This file is part of libmspgl
+Copyright © 2011  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#ifndef WINDINGTEST_H_
+#define WINDINGTEST_H_
+
+#include <msp/strings/lexicalcast.h>
+#include "bindable.h"
+#include "gl.h"
+
+namespace Msp {
+namespace GL {
+
+enum FaceWinding
+{
+	CLOCKWISE = GL_CW,
+	COUNTERCLOCKWISE = GL_CCW
+};
+
+void operator>>(const LexicalConverter &, FaceWinding &);
+
+/**
+Tests the winding of polygons.  If the order of vertices on screen does not
+match the winding, the polygon is not rendered.
+*/
+class WindingTest: public Bindable<WindingTest>
+{
+private:
+	bool test;
+	FaceWinding winding;
+
+public:
+	WindingTest();
+	WindingTest(FaceWinding);
+
+	void bind() const;
+
+	static void unbind();
+
+	static WindingTest &clockwise();
+	static WindingTest &counterclockwise();
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif