Bonjour,
j'ai essayé d'adapter le très bon code d'exemple "Hello GL" proposé par PyQT.
Je voudrais tracer deux triangles, l'un en rouge et l'autre en bleu. Malheureusement je n'y arrive pas.

Toute info. est la bienvenue.

Voici le code.
Code : Sélectionner tout - Visualiser dans une fenêtre à part
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
#!/usr/bin/env python
 
"""PyQt4 port of the opengl/hellogl example from Qt v4.x"""
 
import sys
import math
from PyQt4 import QtCore, QtGui, QtOpenGL
 
try:
   from OpenGL import GL
except ImportError:
   app = QtGui.QApplication(sys.argv)
   QtGui.QMessageBox.critical(None, "OpenGL hellogl",
                           "PyOpenGL must be installed to run this example.",
                           QtGui.QMessageBox.Ok | QtGui.QMessageBox.Default,
                           QtGui.QMessageBox.NoButton)
   sys.exit(1)
 
 
class Window(QtGui.QWidget):
   def __init__(self, parent=None):
       QtGui.QWidget.__init__(self, parent)
 
       self.glWidget = GLWidget()
 
       self.xSlider = self.createSlider(QtCore.SIGNAL("xRotationChanged(int)"),
                                        self.glWidget.setXRotation)
       self.ySlider = self.createSlider(QtCore.SIGNAL("yRotationChanged(int)"),
                                        self.glWidget.setYRotation)
       self.zSlider = self.createSlider(QtCore.SIGNAL("zRotationChanged(int)"),
                                        self.glWidget.setZRotation)
 
       mainLayout = QtGui.QHBoxLayout()
       mainLayout.addWidget(self.glWidget)
       mainLayout.addWidget(self.xSlider)
       mainLayout.addWidget(self.ySlider)
       mainLayout.addWidget(self.zSlider)
       self.setLayout(mainLayout)
 
       self.xSlider.setValue(15 * 16)
       self.ySlider.setValue(345 * 16)
       self.zSlider.setValue(0 * 16)
 
       self.setWindowTitle(self.tr("Hello GL"))
 
   def createSlider(self, changedSignal, setterSlot):
       slider = QtGui.QSlider(QtCore.Qt.Vertical)
 
       slider.setRange(0, 360 * 16)
       slider.setSingleStep(16)
       slider.setPageStep(15 * 16)
       slider.setTickInterval(15 * 16)
       slider.setTickPosition(QtGui.QSlider.TicksRight)
 
       self.glWidget.connect(slider, QtCore.SIGNAL("valueChanged(int)"), setterSlot)
       self.connect(self.glWidget, changedSignal, slider, QtCore.SLOT("setValue(int)"))
 
       return slider
 
 
class GLWidget(QtOpenGL.QGLWidget):
   def __init__(self, parent=None):
       QtOpenGL.QGLWidget.__init__(self, parent)
 
       self.object = 0
       self.xRot = 0
       self.yRot = 0
       self.zRot = 0
 
       self.lastPos = QtCore.QPoint()
 
       self.trolltechGreen = QtGui.QColor.fromCmykF(0.40, 0.0, 1.0, 0.0)
       self.trolltechPurple = QtGui.QColor.fromCmykF(0.39, 0.39, 0.0, 0.0)
 
   def xRotation(self):
       return self.xRot
 
   def yRotation(self):
       return self.yRot
 
   def zRotation(self):
       return self.zRot
 
   def minimumSizeHint(self):
       return QtCore.QSize(50, 50)
 
   def sizeHint(self):
       return QtCore.QSize(400, 400)
 
   def setXRotation(self, angle):
       angle = self.normalizeAngle(angle)
       if angle != self.xRot:
           self.xRot = angle
           self.emit(QtCore.SIGNAL("xRotationChanged(int)"), angle)
           self.updateGL()
 
   def setYRotation(self, angle):
       angle = self.normalizeAngle(angle)
       if angle != self.yRot:
           self.yRot = angle
           self.emit(QtCore.SIGNAL("yRotationChanged(int)"), angle)
           self.updateGL()
 
   def setZRotation(self, angle):
       angle = self.normalizeAngle(angle)
       if angle != self.zRot:
           self.zRot = angle
           self.emit(QtCore.SIGNAL("zRotationChanged(int)"), angle)
           self.updateGL()
 
   def initializeGL(self):
       self.qglClearColor(self.trolltechPurple.dark())
       self.object = self.makeObject()
       GL.glShadeModel(GL.GL_FLAT)
       GL.glEnable(GL.GL_DEPTH_TEST)
       GL.glEnable(GL.GL_CULL_FACE)
 
   def paintGL(self):
       GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
       GL.glLoadIdentity()
       GL.glTranslated(0.0, 0.0, -10.0)
       GL.glRotated(self.xRot / 16.0, 1.0, 0.0, 0.0)
       GL.glRotated(self.yRot / 16.0, 0.0, 1.0, 0.0)
       GL.glRotated(self.zRot / 16.0, 0.0, 0.0, 1.0)
       GL.glCallList(self.object)
 
   def resizeGL(self, width, height):
       side = min(width, height)
       GL.glViewport((width - side) / 2, (height - side) / 2, side, side)
 
       GL.glMatrixMode(GL.GL_PROJECTION)
       GL.glLoadIdentity()
       GL.glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0)
       GL.glMatrixMode(GL.GL_MODELVIEW)
 
   def mousePressEvent(self, event):
       self.lastPos = QtCore.QPoint(event.pos())
 
   def mouseMoveEvent(self, event):
       dx = event.x() - self.lastPos.x()
       dy = event.y() - self.lastPos.y()
 
       if event.buttons() & QtCore.Qt.LeftButton:
           self.setXRotation(self.xRot + 8 * dy)
           self.setYRotation(self.yRot + 8 * dx)
       elif event.buttons() & QtCore.Qt.RightButton:
           self.setXRotation(self.xRot + 8 * dy)
           self.setZRotation(self.zRot + 8 * dx)
 
       self.lastPos = QtCore.QPoint(event.pos())
 
   def makeObject(self):
       genList = GL.glGenLists(1)
       GL.glNewList(genList, GL.GL_COMPILE)
 
       GL.glBegin(GL.GL_QUADS)
 
       x1 = +0.06
       y1 = +0.06
       z1 = -0.54
 
       x2 = +0.14
       y2 = +0.06
       z2 = -0.54
 
       x3 = +0.08
       y3 = +0.00
       z3 = -0.54
 
              self.triangle(x1, y1, z1, x2, y2, z2, x3, y3, z3,255,0,0)
 
 
       GL.glBegin(GL.GL_QUADS)
              x1 = +0.06
       y1 = +0.06
       z1 = 0.54
              x2 = +0.14
       y2 = +0.06
       z2 = 0.54
              x3 = +0.08
       y3 = +0.00
       z3 = 0.54
              self.triangle(x1, y1, z1, x2, y2, z2, x3, y3, z3,0,0,255)
              GL.glEnd()
       GL.glEndList()
 
       return genList
 
   def triangle(self, x1, y1, z1, x2, y2, z2, x3, y3, z3,r,g,b):
       self.qglColor(QtGui.QColor(r,g,b))
 
       GL.glVertex3d(x1, y1, z1)
       GL.glVertex3d(x2, y2, z2)
       GL.glVertex3d(x3, y3, z3)
 
 
   def extrude(self, x1, y1, x2, y2):
       self.qglColor(self.trolltechGreen.dark(250 + int(100 * x1)))
 
       GL.glVertex3d(x1, y1, +0.05)
       GL.glVertex3d(x2, y2, +0.05)
       GL.glVertex3d(x2, y2, -0.05)
       GL.glVertex3d(x1, y1, -0.05)
 
   def normalizeAngle(self, angle):
       while angle < 0:
           angle += 360 * 16
       while angle > 360 * 16:
           angle -= 360 * 16
       return angle
 
 
if __name__ == '__main__':
   app = QtGui.QApplication(sys.argv)
   window = Window()
   window.show()
   sys.exit(app.exec_())