3 #include "TriangleSetGL.h"
4 #include "TriangleSet.h"
7 #include <TGLDrawFlags.h>
10 #include "Windows4root.h"
14 //______________________________________________________________________
20 ClassImp(TriangleSetGL)
22 TriangleSetGL::TriangleSetGL() : TGLObject(), fM(0)
24 // fCached = false; // Disable display list.
27 TriangleSetGL::~TriangleSetGL()
30 /**************************************************************************/
32 Bool_t TriangleSetGL::SetModel(TObject* obj)
34 if(SetModelCheckClass(obj, TriangleSet::Class())) {
35 fM = dynamic_cast<TriangleSet*>(obj);
41 void TriangleSetGL::SetBBox()
43 // !! This ok if master sub-classed from TAttBBox
44 SetAxisAlignedBBox(((TriangleSet*)fExternalObj)->AssertBBox());
47 /**************************************************************************/
49 void TriangleSetGL::DirectDraw(const TGLDrawFlags& /*flags*/) const
51 TriangleSet& TS = *fM;
52 Bool_t isScaled = TS.fHMTrans.IsScale();
55 glGetIntegerv(GL_SHADE_MODEL, &ex_shade_model);
56 glShadeModel(GL_FLAT);
58 glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT);
60 glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
61 glEnable(GL_COLOR_MATERIAL);
62 glPolygonMode(GL_FRONT, GL_FILL);
63 glPolygonMode(GL_BACK, GL_LINE);
64 glDisable(GL_CULL_FACE);
65 if (isScaled) glEnable(GL_NORMALIZE);
66 glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
67 glVertexPointer(3, GL_FLOAT, 0, TS.fVerts);
68 glEnableClientState(GL_VERTEX_ARRAY);
70 Int_t* T = TS.fTrings;
71 Float_t* N = TS.fTringNorms;
72 UChar_t* C = TS.fTringCols;
76 glBegin(GL_TRIANGLES);
77 for(Int_t t=0; t<TS.fNTrings; ++t) {
79 glNormal3fv(N); N += 3;
81 Float_t* v0 = TS.Vertex(T[0]);
82 Float_t* v1 = TS.Vertex(T[1]);
83 Float_t* v2 = TS.Vertex(T[2]);
84 e1.SetXYZ(v1[0]-v0[0], v1[1]-v0[1], v1[2]-v0[2]);
85 e2.SetXYZ(v2[0]-v0[0], v2[1]-v0[1], v2[2]-v0[2]);
87 if (!isScaled) n.SetMag(1);
88 glNormal3d(n.x(), n.y(), n.z());
91 glColor3ubv(C); C += 3;
102 glShadeModel(ex_shade_model);