85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
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/*#***************************************************************************
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* Visibility.h o o *
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* o o *
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* Visual Computing Group _ O _ *
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* IEI Institute, CNUCE Institute, CNR Pisa \/)\/ *
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* /\/| *
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* Copyright(C) 1999 by Paolo Cignoni, Paolo Pingi, Claudio Rocchini | *
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* All rights reserved. \ *
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* *
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* Permission to use, copy, modify, distribute and sell this software and *
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* its documentation for any purpose is hereby granted without fee, provided *
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* that the above copyright notice appear in all copies and that both that *
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* copyright notice and this permission notice appear in supporting *
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* documentation. the author makes no representations about the suitability *
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* of this software for any purpose. It is provided "as is" without express *
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* or implied warranty. *
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* *
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*****************************************************************************/
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/*#**************************************************************************
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History
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2003 Aug 26 First Working version
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****************************************************************************/
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#ifndef __VCG_SIMPLE_PIC
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#define __VCG_SIMPLE_PIC
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#include <vcg/math/matrix44.h>
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namespace vcg {
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template <class PixType>
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class SimplePic
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{public:
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std::vector<PixType> img;
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int sx,sy;
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void Create(int tx,int ty)
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{
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sx=tx;sy=ty;
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img.resize(sx*sy);
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}
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PixType &Pix(int x, int y) {return img[sx*y+x];}
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void OpenGLSnap(GLenum format=0)
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{
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int vp[4];
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glGetIntegerv( GL_VIEWPORT,vp ); // Lettura viewport
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glPixelStorei( GL_PACK_ROW_LENGTH, 0);
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glPixelStorei( GL_PACK_ALIGNMENT, 1);
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int tx = vp[2];
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int ty = vp[3];
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Create(tx,ty);
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GLenum mtype = 0;
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if(format==0) {
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format = GL_RGBA;
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mtype = GL_UNSIGNED_BYTE;
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}
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if(format==GL_DEPTH_COMPONENT) {
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format = GL_DEPTH_COMPONENT;
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mtype = GL_FLOAT;
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}
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glReadPixels(vp[0],vp[1],vp[2],vp[3],format,mtype,(GLvoid *)&img[0]);
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}
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bool SavePPM( const char * filename )
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{
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FILE * fp = fopen(filename,"wb");
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if(fp==0) return false;
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fprintf(fp,"P6\n%d %d\n255\n",sx,sy);
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for(int i=0;i<sx*sy;++i)
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{
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fwrite(&(img[i]),3,1,fp);
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}
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fclose(fp);
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return true;
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}
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};
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}
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#endif // __VCG_MESH_VISIBILITY
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