EVE/Reve/BoxSetGL.cxx

   1 // $Header$
   2
   3 #include "BoxSetGL.h"
   4 #include <Reve/BoxSet.h>
   5
   6 #include <TGLDrawFlags.h>
   7 #ifdef WIN32
   8 #include "Windows4root.h"
   9 #endif
  10 #include <GL/gl.h>
  11 #include <GL/glu.h>
  12
  13 using namespace Reve;
  14
  15 //______________________________________________________________________
  16 // BoxSetGL
  17 //
  18
  19 ClassImp(BoxSetGL)
  20
  21 BoxSetGL::BoxSetGL() : fM(0)
  22 {
  23   // fCached = false; // Disable display list.
  24 }
  25
  26 BoxSetGL::~BoxSetGL()
  27 {}
  28
  29 /**************************************************************************/
  30
  31 Bool_t BoxSetGL::SetModel(TObject* obj)
  32 {
  33   Bool_t isok = SetModelCheckClass(obj, Reve::BoxSet::Class());
  34   fM = isok ? dynamic_cast<Reve::BoxSet*>(obj) : 0;
  35   return isok;
  36 }
  37
  38 void BoxSetGL::SetBBox()
  39 {
  40   SetAxisAlignedBBox(fM->AssertBBox());
  41 }
  42
  43 /**************************************************************************/
  44
  45 void BoxSetGL::DirectDraw(const TGLDrawFlags& /*flags*/) const
  46 {
  47   BoxSet& mB = * fM;
  48   // printf("BoxSetGL::DirectDraw N boxes %d\n", mB.fBoxes.size());
  49   if(mB.fBoxes.size() == 0)
  50     return;
  51
  52   glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT);
  53   glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
  54   glEnable(GL_COLOR_MATERIAL);
  55   glDisable(GL_CULL_FACE);
  56   if (mB.fRenderMode == BoxSet::RM_Fill) {
  57     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
  58   } else if (mB.fRenderMode == BoxSet::RM_Line) {
  59     glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
  60     glDisable(GL_LIGHTING);
  61   }
  62   UChar_t defCol[4];
  63   Reve::ColorFromIdx(mB.fDefaultColor, defCol);
  64
  65   if (mB.fRenderMode != BoxSet::RM_Line) {
  66
  67     glBegin(GL_QUADS);
  68     for(std::vector<Box>::iterator q=mB.fBoxes.begin(); q!=mB.fBoxes.end(); ++q) {
  69       UChar_t* c = q->color;
  70       if (c[3] == 0 && c[2] == 0 && c[1] == 0 && c[0] == 0) {
  71         glColor4ubv(defCol);
  72       } else {
  73         glColor4ubv(c);
  74       }
  75
  76       // bottom: 3210
  77       glNormal3f(0, 0, -1);
  78       glVertex3fv(q->vertices + 9);  glVertex3fv(q->vertices + 6);
  79       glVertex3fv(q->vertices + 3);  glVertex3fv(q->vertices);
  80       // top:   4567
  81       glNormal3f(0, 0, 1);
  82       glVertex3fv(q->vertices + 12); glVertex3fv(q->vertices + 15);
  83       glVertex3fv(q->vertices + 18); glVertex3fv(q->vertices + 21);
  84       // front: 0154
  85       glNormal3f(0, -1, 0);
  86       glVertex3fv(q->vertices);      glVertex3fv(q->vertices + 3);
  87       glVertex3fv(q->vertices + 15); glVertex3fv(q->vertices + 12);
  88       // back:  7623
  89       glNormal3f(0, 1, 0);
  90       glVertex3fv(q->vertices + 21); glVertex3fv(q->vertices + 18);
  91       glVertex3fv(q->vertices + 6);  glVertex3fv(q->vertices + 9);
  92       // left:  4730
  93       glNormal3f(-1, 0, 0);
  94       glVertex3fv(q->vertices + 12); glVertex3fv(q->vertices + 21);
  95       glVertex3fv(q->vertices + 9);  glVertex3fv(q->vertices);
  96       // right: 5126
  97       glNormal3f(1, 0, 0);
  98       glVertex3fv(q->vertices + 15); glVertex3fv(q->vertices + 3);
  99       glVertex3fv(q->vertices + 6);  glVertex3fv(q->vertices + 18);
 100     }
 101     glEnd();
 102
 103   } else {
 104
 105     for(std::vector<Box>::iterator q=mB.fBoxes.begin(); q!=mB.fBoxes.end(); ++q) {
 106       UChar_t* c = q->color;
 107       if (c[3] == 0 && c[2] == 0 && c[1] == 0 && c[0] == 0) {
 108         glColor4ubv(defCol);
 109       } else {
 110         glColor4ubv(c);
 111       }
 112
 113       // bottom: 3210
 114       glBegin(GL_LINE_LOOP);
 115       glVertex3fv(q->vertices + 9);  glVertex3fv(q->vertices + 6);
 116       glVertex3fv(q->vertices + 3);  glVertex3fv(q->vertices);
 117       glEnd();
 118       // top:   4567
 119       glBegin(GL_LINE_LOOP);
 120       glVertex3fv(q->vertices + 12); glVertex3fv(q->vertices + 15);
 121       glVertex3fv(q->vertices + 18); glVertex3fv(q->vertices + 21);
 122       glEnd();
 123       // front: 0154
 124       glBegin(GL_LINE_LOOP);
 125       glVertex3fv(q->vertices);      glVertex3fv(q->vertices + 3);
 126       glVertex3fv(q->vertices + 15); glVertex3fv(q->vertices + 12);
 127       glEnd();
 128       // back:  7623
 129       glBegin(GL_LINE_LOOP);
 130       glVertex3fv(q->vertices + 21); glVertex3fv(q->vertices + 18);
 131       glVertex3fv(q->vertices + 6);  glVertex3fv(q->vertices + 9);
 132       glEnd();
 133       // left:  4730
 134       glBegin(GL_LINE_LOOP);
 135       glVertex3fv(q->vertices + 12); glVertex3fv(q->vertices + 21);
 136       glVertex3fv(q->vertices + 9);  glVertex3fv(q->vertices);
 137       glEnd();
 138       // right: 5126
 139       glBegin(GL_LINE_LOOP);
 140       glVertex3fv(q->vertices + 15); glVertex3fv(q->vertices + 3);
 141       glVertex3fv(q->vertices + 6);  glVertex3fv(q->vertices + 18);
 142       glEnd();
 143     }
 144
 145   }
 146
 147   glPopAttrib();
 148 }