add vcglib

vcglib/apps/unsupported/shadevis/simplepic.h

@@ -0,0 +1,90 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2016                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* 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; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* 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 (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/****************************************************************************
+  History
+
+$Log: not supported by cvs2svn $
+
+****************************************************************************/
+
+#ifndef __VCG_SIMPLE_PIC
+#define __VCG_SIMPLE_PIC
+#include <vcg/math/matrix44.h>
+
+namespace vcg {
+  template <class PixType> 
+  class SimplePic
+  {public:
+    std::vector<PixType> img;
+   int sx,sy;
+   void Create(int tx,int ty)
+   {
+     sx=tx;sy=ty;
+     img.resize(sx*sy);
+   }
+   PixType &Pix(int x, int y) {return img[sx*y+x];}
+
+   void OpenGLSnap(GLenum format=0)
+	{
+		int vp[4];
+		glGetIntegerv( GL_VIEWPORT,vp );		// Lettura viewport
+		glPixelStorei( GL_PACK_ROW_LENGTH, 0);
+		glPixelStorei( GL_PACK_ALIGNMENT, 1);
+		int tx = vp[2];
+		int ty = vp[3];
+
+		Create(tx,ty);
+
+		GLenum mtype  = 0;
+
+		if(format==0) {
+				format = GL_RGBA;
+        mtype = GL_UNSIGNED_BYTE;
+		}
+		if(format==GL_DEPTH_COMPONENT) {
+				format = GL_DEPTH_COMPONENT;
+        mtype = GL_FLOAT;
+		}
+ 		glReadPixels(vp[0],vp[1],vp[2],vp[3],format,mtype,(GLvoid *)&img[0]);
+	}
+	bool SavePPM( const char * filename )
+	{
+		FILE * fp = fopen(filename,"wb");
+		if(fp==0) return false;
+
+
+			fprintf(fp,"P6\n%d %d\n255\n",sx,sy);
+
+			for(int i=0;i<sx*sy;++i)
+			{
+			 fwrite(&(img[i]),3,1,fp);
+			}
+	
+		fclose(fp);
+		return true;
+	}
+
+};
+
+}
+#endif // __VCG_MESH_VISIBILITY