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#!/usr/bin/env python
############################################################################
##
## Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
##
## This file is part of the example classes of the Qt Toolkit.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of
## this file. Please review the following information to ensure GNU
## General Public Licensing requirements will be met:
## http://www.trolltech.com/products/qt/opensource.html
##
## If you are unsure which license is appropriate for your use, please
## review the following information:
## http://www.trolltech.com/products/qt/licensing.html or contact the
## sales department at sales@trolltech.com.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
import sys
from PyQt4 import QtCore, QtGui, QtOpenGL
try:
from OpenGL.GL import *
except ImportError:
app = QtGui.QApplication(sys.argv)
QtGui.QMessageBox.critical(None, "OpenGL textures",
"PyOpenGL must be installed to run this example.")
sys.exit(1)
import textures_rc
class GLWidget(QtOpenGL.QGLWidget):
clicked = QtCore.pyqtSignal()
sharedObject = 0
refCount = 0
coords = (
( ( +1, -1, -1 ), ( -1, -1, -1 ), ( -1, +1, -1 ), ( +1, +1, -1 ) ),
( ( +1, +1, -1 ), ( -1, +1, -1 ), ( -1, +1, +1 ), ( +1, +1, +1 ) ),
( ( +1, -1, +1 ), ( +1, -1, -1 ), ( +1, +1, -1 ), ( +1, +1, +1 ) ),
( ( -1, -1, -1 ), ( -1, -1, +1 ), ( -1, +1, +1 ), ( -1, +1, -1 ) ),
( ( +1, -1, +1 ), ( -1, -1, +1 ), ( -1, -1, -1 ), ( +1, -1, -1 ) ),
( ( -1, -1, +1 ), ( +1, -1, +1 ), ( +1, +1, +1 ), ( -1, +1, +1 ) )
)
def __init__(self, parent=None, shareWidget=None):
super(GLWidget, self).__init__(parent, shareWidget)
self.clearColor = QtCore.Qt.black
self.xRot = 0
self.yRot = 0
self.zRot = 0
self.clearColor = QtGui.QColor()
self.lastPos = QtCore.QPoint()
def __del__(self):
# If the application is terminating then the order in which things get
# garbage collected can cause exceptions to be raised. Therefore we
# access the class variables via the instance's __class__ attribute and
# ignore some exceptions.
self.__class__.refCount -= 1
if self.__class__.refCount == 0:
try:
self.makeCurrent()
except RuntimeError:
pass
glDeleteLists(self.__class__.sharedObject, 1)
def minimumSizeHint(self):
return QtCore.QSize(50, 50)
def sizeHint(self):
return QtCore.QSize(200, 200)
def rotateBy(self, xAngle, yAngle, zAngle):
self.xRot += xAngle
self.yRot += yAngle
self.zRot += zAngle
self.updateGL()
def setClearColor(self, color):
self.clearColor = color
self.updateGL()
def initializeGL(self):
if not GLWidget.sharedObject:
GLWidget.sharedObject = self.makeObject()
GLWidget.refCount += 1
glEnable(GL_DEPTH_TEST)
glEnable(GL_CULL_FACE)
glEnable(GL_TEXTURE_2D)
def paintGL(self):
self.qglClearColor(self.clearColor)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glLoadIdentity()
glTranslated(0.0, 0.0, -10.0)
glRotated(self.xRot / 16.0, 1.0, 0.0, 0.0)
glRotated(self.yRot / 16.0, 0.0, 1.0, 0.0)
glRotated(self.zRot / 16.0, 0.0, 0.0, 1.0)
glCallList(GLWidget.sharedObject)
def resizeGL(self, width, height):
side = min(width, height)
if side < 0:
return
glViewport((width - side) / 2, (height - side) / 2, side, side)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0)
glMatrixMode(GL_MODELVIEW)
def mousePressEvent(self, event):
self.lastPos = 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.rotateBy(8 * dy, 8 * dx, 0)
elif event.buttons() & QtCore.Qt.RightButton:
self.rotateBy(8 * dy, 0, 8 * dx)
self.lastPos = event.pos()
def mouseReleaseEvent(self, event):
self.clicked.emit()
def makeObject(self):
dlist = glGenLists(1)
glNewList(dlist, GL_COMPILE)
for i in range(6):
self.bindTexture(QtGui.QPixmap(':/images/side%d.png' % (i + 1)))
glBegin(GL_QUADS)
for j in range(4):
tx = {False: 0, True: 1}[j == 0 or j == 3]
ty = {False: 0, True: 1}[j == 0 or j == 1]
glTexCoord2d(tx, ty)
glVertex3d(0.2 * GLWidget.coords[i][j][0],
0.2 * GLWidget.coords[i][j][1],
0.2 * GLWidget.coords[i][j][2])
glEnd()
glEndList()
return dlist
class Window(QtGui.QWidget):
NumRows = 2
NumColumns = 3
def __init__(self):
super(Window, self).__init__()
mainLayout = QtGui.QGridLayout()
self.glWidgets = []
for i in range(Window.NumRows):
self.glWidgets.append([])
for j in range(Window.NumColumns):
self.glWidgets[i].append(None)
for i in range(Window.NumRows):
for j in range(Window.NumColumns):
clearColor = QtGui.QColor()
clearColor.setHsv(((i * Window.NumColumns) + j) * 255
/ (Window.NumRows * Window.NumColumns - 1),
255, 63)
self.glWidgets[i][j] = GLWidget(self, self.glWidgets[0][0])
self.glWidgets[i][j].setClearColor(clearColor)
self.glWidgets[i][j].rotateBy(+42 * 16, +42 * 16, -21 * 16)
mainLayout.addWidget(self.glWidgets[i][j], i, j)
self.glWidgets[i][j].clicked.connect(self.setCurrentGlWidget)
self.setLayout(mainLayout)
self.currentGlWidget = self.glWidgets[0][0]
timer = QtCore.QTimer(self)
timer.timeout.connect(self.rotateOneStep)
timer.start(20)
self.setWindowTitle("Textures")
def setCurrentGlWidget(self):
self.currentGlWidget = self.sender()
def rotateOneStep(self):
if self.currentGlWidget:
self.currentGlWidget.rotateBy(+2 * 16, +2 * 16, -1 * 16)
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
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