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diff --git a/src/gldefines.h b/src/gldefines.h
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+/********************************************************
+ * Convenience objects for building OpenGL surfaces.
+ *
+ *  Created on: 24.04.2012
+ *      Author: Walter Roth
+ *  Copyright by Walter Roth 2012, Licence: GPL
+ *
+ *******************************************************/
+
+/** \file
+  * \brief Convenience objects for building OpenGL surfaces.
+  *
+  * Predefined 3D-vectors and colors that are frequently used.
+  */
+
+#ifndef GLDEFINES_H
+#define GLDEFINES_H
+
+#include <QVector3D>
+#include "glcolorrgba.h"
+
+//Predefined vectors
+
+const static QVector3D v_Zero = QVector3D(0.0, 0.0, 0.0);
+const static QVector3D v_X = QVector3D(1.0, 0.0, 0.0);
+const static QVector3D v_Y = QVector3D(0.0, 1.0, 0.0);
+const static QVector3D v_Z = QVector3D(0.0, 0.0, 1.0);
+const static QVector3D v_XY = QVector3D(1.0, 1.0, 0.0);
+const static QVector3D v_XZ = QVector3D(1.0, 0.0, 1.0);
+const static QVector3D v_YZ = QVector3D(0.0, 1.0, 1.0);
+const static QVector3D v_XYZ = QVector3D(1.0, 1.0, 1.0);
+
+
+/** Predefined global colors for convenience.
+  */
+const static GLColorRgba cl_White      = GLColorRgba(1.0,1.0,1.0);
+const static GLColorRgba cl_Black      = GLColorRgba(0.0,0.0,0.0);
+const static GLColorRgba cl_Red        = GLColorRgba(1.0,0.0,0.0);
+const static GLColorRgba cl_Green      = GLColorRgba(0.0,1.0,0.0);
+const static GLColorRgba cl_Blue       = GLColorRgba(0.0,0.0,1.0);
+const static GLColorRgba cl_LightBlue  = GLColorRgba(0.5,0.5,1.0);
+const static GLColorRgba cl_Gray       = GLColorRgba(0.5,0.5,0.5);
+const static GLColorRgba cl_Yellow     = GLColorRgba(1.0,1.0,0.0);
+const static GLColorRgba cl_Magenta    = GLColorRgba(1.0,0.0,1.0);
+const static GLColorRgba cl_Cyan       = GLColorRgba(0.0,1.0,1.0);
+
+
+
+#endif // GLDEFINES_H