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| #!/usr/bin/env python
"""PyQt4 port of the opengl/hellogl example from Qt v4.x"""
import sys
import math, random
from PyQt4 import QtCore, QtGui, QtOpenGL
try:
from OpenGL import GL,GLU
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.rep1=6
self.rep2=6
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, -19.0)
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(-6, 6, -6, 6, 1, 37)
# http://www.talisman.org/opengl-1.1/Reference/glOrtho.html
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 wheelEvent(self, event):
print 'La roue tourne...'
def makeObject(self):
genList = GL.glGenLists(1)
GL.glNewList(genList, GL.GL_COMPILE)
f=[]
NGrille=100
for i in range(NGrille+1):
z=[]
for j in range(NGrille+1):
z.append(5*math.sin(-5+10.0*i/NGrille) * math.cos(-5+10.0*j/NGrille))
f.append(z)
# print f
# print f[0][0]
for i in range(1,NGrille+1):
for j in range(1,NGrille+1):
# print 'i, j = ' +str((i,j))
# print (-5+10.0*(i-1)/NGrille, -5+10.0*(j-1)/NGrille)
# Attention, on doit taper "+10.0*" car sinon la division est euclidienne.
couleur = self.degrade(-6, 6, f[i][j])
self.quadrilatere(-5+10.0*(i-1)/NGrille, -5+10.0*(j-1)/NGrille, f[i-1][j-1],
-5+10.0*i/NGrille, -5+10.0*(j-1)/NGrille, f[i][j-1],
-5+10.0*i/NGrille, -5+10.0*j/NGrille, f[i][j],
-5+10.0*(i-1)/NGrille, -5+10.0*j/NGrille, f[i-1][j],
couleur[0], couleur[1], couleur[2])
GL.glEndList()
return genList
def degrade(self, zMin, zMax ,zActuel):
# Cas d'un degrade un peu chauvin avec trois couleurs
Couleur1 = [0, 0, 255]
Couleur2 = [255, 255, 255]
Couleur3 = [255, 0, 0]
k = 100.0*(zMax-zActuel)/(zMax - zMin)
if k <= 50:
c = k / 50.0
r = math.floor(Couleur1[0] + (Couleur2[0] - Couleur1[0])* c)
g = math.floor(Couleur1[1] + (Couleur2[1] - Couleur1[1])* c)
b = math.floor(Couleur1[2] + (Couleur2[2] - Couleur1[2])* c)
else:
c = (k - 50) / 50.0
r = math.floor(Couleur2[0] + (Couleur3[0] - Couleur2[0])* c)
g = math.floor(Couleur2[1] + (Couleur3[1] - Couleur2[1])* c)
b = math.floor(Couleur2[2] + (Couleur3[2] - Couleur2[2])* c)
return [r, g, b]
def quadrilatere(self, x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4, r, g, b):
self.qglColor(QtGui.QColor(r,g,b))
GL.glBegin(GL.GL_QUADS)
GL.glVertex3d(x1, y1, z1)
GL.glVertex3d(x2, y2, z2)
GL.glVertex3d(x3, y3, z3)
GL.glVertex3d(x4, y4, z4)
GL.glEnd()
# print '\nPoint 1 :'
# print (x1, y1, z1)
# print '\nPoint 2 :'
# print (x2, y2, z2)
# print '\nPoint 3 :'
# print (x3, y3, z3)
# print '\nPoint 4 :'
# print (x4, y4, z4)
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_()) |
