Geant4  10.03.p02
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SoGL2PSAction.cc
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26 #ifdef G4VIS_BUILD_OI_DRIVER
27 
28 /*----------------------------HEPVis----------------------------------------*/
29 /* */
30 /* Node: SoGL2PSAction */
31 /* Author: Guy Barrand */
32 /* */
33 /*--------------------------------------------------------------------------*/
34 
35 // this :
37 
38 // Inventor :
39 #include <Inventor/elements/SoViewportRegionElement.h>
40 #include <Inventor/errors/SoDebugError.h>
41 
42 #include "Geant4_gl2ps.h"
43 
44 #include <stdio.h>
45 
46 SO_ACTION_SOURCE(SoGL2PSAction)
48 void SoGL2PSAction::initClass(
49 )
52 {
53  SO_ACTION_INIT_CLASS(SoGL2PSAction,SoGLRenderAction);
54 }
57  const SbViewportRegion& aViewPortRegion
58 )
59 :SoGLRenderAction(aViewPortRegion)
63 {
64  setFileName("out.ps");
65  SO_ACTION_CONSTRUCTOR(SoGL2PSAction);
66 }
67 
69 )
72 {
73  fFile = ::fopen(fFileName,"w");
74  if(!fFile) {
75  SoDebugError::post("SoGL2PSAction::enableFileWriting",
76  "Cannot open file %s",fFileName);
77  return false;
78  }
79 #ifdef __COIN__
80 #else //SGI
81  const SbViewportRegion& vpr = getViewportRegion();
82  SoViewportRegionElement::set(getState(),vpr);
83  G4gl2psBegin();
84 #endif
85  return true;
86 }
89 )
92 {
93 #ifdef __COIN__
94 #else //SGI
95  gl2psEndPage();
96 #endif
97  ::fclose(fFile);
98  fFile = 0;
99 }
100 
103  int aWidth
104 ,int aHeight
105 ,float aXorig
106 ,float aYorig
107 ,float aXmove
108 ,float aYmove
109 )
112 {
113  if(!fFile) return false;
114  GLboolean valid;
115  glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID,&valid);
116  if(!valid) return false;
117  float pos[4];
118  glGetFloatv(GL_CURRENT_RASTER_POSITION,pos);
119  int xoff = -(int)(aXmove + aXorig);
120  int yoff = -(int)(aYmove + aYorig);
121  int x = (int)(pos[0] + xoff);
122  int y = (int)(pos[1] + yoff);
123  // Should clip against viewport area :
124  GLint vp[4];
125  glGetIntegerv(GL_VIEWPORT,vp);
126  GLsizei w = aWidth;
127  GLsizei h = aHeight;
128  if(x+w>(vp[0]+vp[2])) w = vp[0]+vp[2]-x;
129  if(y+h>(vp[1]+vp[3])) h = vp[1]+vp[3]-y;
130  int s = 3 * w * h;
131  if(s<=0) return false;
132  float* image = (float*)::malloc(s * sizeof(float));
133  if(!image) return false;
134  glReadPixels(x,y,w,h,GL_RGB,GL_FLOAT,image);
135  GLint status = gl2psDrawPixels(w,h,xoff,yoff,GL_RGB,GL_FLOAT,image);
136  ::free(image);
137  return (status!=GL2PS_SUCCESS ? false : true);
138 }
141  SoNode* aNode
142 )
145 {
146  if(fFile) {
147 #ifdef __COIN__
148  const SbViewportRegion& vpr = getViewportRegion();
149  SoViewportRegionElement::set(getState(),vpr);
150  G4gl2psBegin();
151  traverse(aNode);
152  gl2psEndPage();
153 #else //SGI
154  // Should have already do G4gl2psBegin() before
155  SoGLRenderAction::beginTraversal(aNode);
156  // Should do gl2psEndPage() after
157 #endif
158  } else {
159  SoGLRenderAction::beginTraversal(aNode);
160  }
161 }
162 
163 #endif
bool enableFileWriting()
GL2PSDLL_API GLint gl2psDrawPixels(GLsizei width, GLsizei height, GLint xorig, GLint yorig, GLenum format, GLenum type, const void *pixels)
bool addBitmap(int, int, float=0, float=0, float=0, float=0)
tuple x
Definition: test.py:50
const XML_Char * s
Definition: expat.h:262
#define GL2PS_SUCCESS
Definition: gl2ps.h:134
GL2PSDLL_API GLint gl2psEndPage(void)
typedef int(XMLCALL *XML_NotStandaloneHandler)(void *userData)
const char * fFileName
SoGL2PSAction(const SbViewportRegion &)
virtual void beginTraversal(SoNode *)
typedef void(XMLCALL *XML_ElementDeclHandler)(void *userData
static const G4double pos
void disableFileWriting()