#!/usr/bin/env python ############################################################################# ## ## Copyright (C) 2010 Riverbank Computing Limited. ## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ## All rights reserved. ## ## This file is part of the examples of PyQt. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ## the names of its contributors may be used to endorse or promote ## products derived from this software without specific prior written ## permission. ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## $QT_END_LICENSE$ ## ############################################################################# 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 samplebuffers", "PyOpenGL must be installed to run this example.") sys.exit(1) class GLWidget(QtOpenGL.QGLWidget): GL_MULTISAMPLE = 0x809D rot = 0.0 def __init__(self, parent): super(GLWidget, self).__init__(QtOpenGL.QGLFormat(QtOpenGL.QGL.SampleBuffers), parent) self.list_ = [] self.startTimer(40) self.setWindowTitle("Sample Buffers") def initializeGL(self): GL.glMatrixMode(GL.GL_PROJECTION) GL.glLoadIdentity() GL.glOrtho( -.5, .5, .5, -.5, -1000, 1000) GL.glMatrixMode(GL.GL_MODELVIEW) GL.glLoadIdentity() GL.glClearColor(1.0, 1.0, 1.0, 1.0) self.makeObject() def resizeGL(self, w, h): GL.glViewport(0, 0, w, h) def paintGL(self): GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT) GL.glMatrixMode(GL.GL_MODELVIEW) GL.glPushMatrix() GL.glEnable(GLWidget.GL_MULTISAMPLE) GL.glTranslatef( -0.25, -0.10, 0.0) GL.glScalef(0.75, 1.15, 0.0) GL.glRotatef(GLWidget.rot, 0.0, 0.0, 1.0) GL.glCallList(self.list_) GL.glPopMatrix() GL.glPushMatrix() GL.glDisable(GLWidget.GL_MULTISAMPLE) GL.glTranslatef(0.25, -0.10, 0.0) GL.glScalef(0.75, 1.15, 0.0) GL.glRotatef(GLWidget.rot, 0.0, 0.0, 1.0) GL.glCallList(self.list_) GL.glPopMatrix() GLWidget.rot += 0.2 self.qglColor(QtCore.Qt.black) self.renderText(-0.35, 0.4, 0.0, "Multisampling enabled") self.renderText(0.15, 0.4, 0.0, "Multisampling disabled") def timerEvent(self, event): self.update() def makeObject(self): trolltechGreen = QtGui.QColor.fromCmykF(0.40, 0.0, 1.0, 0.0) NumSectors = 15 x1 = +0.06 y1 = -0.14 x2 = +0.14 y2 = -0.06 x3 = +0.08 y3 = +0.00 x4 = +0.30 y4 = +0.22 self.list_ = GL.glGenLists(1) GL.glNewList(self.list_, GL.GL_COMPILE) for i in range(NumSectors): angle1 = float((i * 2 * math.pi) / NumSectors) x5 = 0.30 * math.sin(angle1) y5 = 0.30 * math.cos(angle1) x6 = 0.20 * math.sin(angle1) y6 = 0.20 * math.cos(angle1) angle2 = float(((i + 1) * 2 * math.pi) / NumSectors) x7 = 0.20 * math.sin(angle2) y7 = 0.20 * math.cos(angle2) x8 = 0.30 * math.sin(angle2) y8 = 0.30 * math.cos(angle2) self.qglColor(trolltechGreen) self.quad(GL.GL_QUADS, x5, y5, x6, y6, x7, y7, x8, y8) self.qglColor(QtCore.Qt.black) self.quad(GL.GL_LINE_LOOP, x5, y5, x6, y6, x7, y7, x8, y8) self.qglColor(trolltechGreen) self.quad(GL.GL_QUADS, x1, y1, x2, y2, y2, x2, y1, x1) self.quad(GL.GL_QUADS, x3, y3, x4, y4, y4, x4, y3, x3) self.qglColor(QtCore.Qt.black) self.quad(GL.GL_LINE_LOOP, x1, y1, x2, y2, y2, x2, y1, x1) self.quad(GL.GL_LINE_LOOP, x3, y3, x4, y4, y4, x4, y3, x3) GL.glEndList() def quad(self, primitive, x1, y1, x2, y2, x3, y3, x4, y4): GL.glBegin(primitive) GL.glVertex2d(x1, y1) GL.glVertex2d(x2, y2) GL.glVertex2d(x3, y3) GL.glVertex2d(x4, y4) GL.glEnd() if __name__ == '__main__': app = QtGui.QApplication(sys.argv) f = QtOpenGL.QGLFormat.defaultFormat() f.setSampleBuffers(True) QtOpenGL.QGLFormat.setDefaultFormat(f) if not QtOpenGL.QGLFormat.hasOpenGL(): QtGui.QMessageBox.information(None, "OpenGL samplebuffers", "This system does not support OpenGL.") sys.exit(0) widget = GLWidget(None) if not widget.format().sampleBuffers(): QtGui.QMessageBox.information(None, "OpenGL samplebuffers", "This system does not have sample buffer support.") sys.exit(0) widget.resize(640, 480) widget.show() sys.exit(app.exec_())