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Diffstat (limited to 'examples/opengl/samplebuffers.py')
| -rwxr-xr-x | examples/opengl/samplebuffers.py | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/examples/opengl/samplebuffers.py b/examples/opengl/samplebuffers.py new file mode 100755 index 000000000..eabcdd313 --- /dev/null +++ b/examples/opengl/samplebuffers.py @@ -0,0 +1,193 @@ +#!/usr/bin/env python + +############################################################################ +## +## Copyright (C) 2013 Riverbank Computing Limited. +## Copyright (C) 2016 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the PySide examples of the Qt Toolkit. +## +## $QT_BEGIN_LICENSE:BSD$ +## 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 The Qt Company Ltd 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." +## +## $QT_END_LICENSE$ +## +############################################################################ + +"""PySide2 port of the opengl/legacy/samplebuffers example from Qt v5.x""" + +import sys +import math +from PySide2 import QtCore, QtGui, QtWidgets, QtOpenGL + +try: + from OpenGL import GL +except ImportError: + app = QtWidgets.QApplication(sys.argv) + messageBox = QtWidgets.QMessageBox(QtWidgets.QMessageBox.Critical, "OpenGL samplebuffers", + "PyOpenGL must be installed to run this example.", + QtWidgets.QMessageBox.Close) + messageBox.setDetailedText("Run:\npip install PyOpenGL PyOpenGL_accelerate") + messageBox.exec_() + sys.exit(1) + + +class GLWidget(QtOpenGL.QGLWidget): + GL_MULTISAMPLE = 0x809D + rot = 0.0 + + def __init__(self, parent=None): + QtOpenGL.QGLWidget.__init__(self, QtOpenGL.QGLFormat(QtOpenGL.QGL.SampleBuffers), parent) + + self.list_ = [] + + self.startTimer(40) + self.setWindowTitle(self.tr("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.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) + Pi = 3.14159265358979323846 + 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 * 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 * 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() + + def freeResources(self): + self.makeCurrent() + GL.glDeleteLists(self.list_, 1) + + +if __name__ == '__main__': + app = QtWidgets.QApplication(sys.argv) + + if not QtOpenGL.QGLFormat.hasOpenGL(): + QMessageBox.information(0, "OpenGL pbuffers", + "This system does not support OpenGL.", + QMessageBox.Ok) + sys.exit(1) + + f = QtOpenGL.QGLFormat.defaultFormat() + f.setSampleBuffers(True) + QtOpenGL.QGLFormat.setDefaultFormat(f) + + widget = GLWidget() + widget.resize(640, 480) + widget.show() + res = app.exec_() + widget.freeResources() + sys.exit(res) |