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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# This program is free software; you can redistribute it and/or modify #
//# it under the terms of the GNU General Public License as published by #
//# the Free Software Foundation; version 2 or later of the License. #
//# #
//# This program is distributed in the hope that it will be useful, #
//# but WITHOUT ANY WARRANTY; without even the implied warranty of #
//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
//# GNU General Public License for more details. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
#ifndef CC_GL_UTILS_HEADER
#define CC_GL_UTILS_HEADER
//qCC_db
#include <ccIncludeGL.h> //Always first!
//Qt
#include <QImage>
//! View orientation
enum CC_VIEW_ORIENTATION { CC_TOP_VIEW, /**< Top view (eye: +Z) **/
CC_BOTTOM_VIEW, /**< Bottom view **/
CC_FRONT_VIEW, /**< Front view **/
CC_BACK_VIEW, /**< Back view **/
CC_LEFT_VIEW, /**< Left view **/
CC_RIGHT_VIEW, /**< Right view **/
CC_ISO_VIEW_1, /**< Isometric view 1: front, right and top **/
CC_ISO_VIEW_2, /**< Isometric view 2: back, left and top **/
};
class ccGLUtils
{
public:
/***************************************************
OpenGL Textures
***************************************************/
static void DisplayTexture2DPosition(QImage image, int x, int y, int w, int h, unsigned char alpha = 255);
inline static void DisplayTexture2D(QImage image, int w, int h, unsigned char alpha = 255) { DisplayTexture2DPosition(image, -w / 2, -h / 2, w, h, alpha); }
static void DisplayTexture2DPosition(GLuint texID, int x, int y, int w, int h, unsigned char alpha = 255);
inline static void DisplayTexture2D(GLuint texID, int w, int h, unsigned char alpha = 255) { DisplayTexture2DPosition(texID, -w / 2, -h / 2, w, h, alpha); }
/***************************************************
OpenGL Matrices
***************************************************/
//! Returns a 4x4 'OpenGL' matrix corresponding to a default 'view' orientation
/** \param orientation view orientation
\return corresponding GL matrix
**/
static ccGLMatrixd GenerateViewMat(CC_VIEW_ORIENTATION orientation);
};
#endif //CC_GL_UTILS_HEADER
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