Re: [PyQt] Help about the use of OpenGL with PyQt
Thanks a lot. I will look at that but it seems that there is no Windows version for Python 2-6. Christophe. There are also the QGLViewer/PyQGLViewer couple. Basically QGLViewer is build on top of the Qt4 OpenGL widget and PyQGLViewer is its python bindings. http://www.libqglviewer.com/ http://pyqglviewer.gforge.inria.fr/wiki/doku.php bye Gianluca ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Help about the use of OpenGL with PyQt
That seems to be very good. Thanks a lot. Christophe David Boddie a écrit : On Sat Apr 4 17:43:29 BST 2009, Jamie Riotto wrote: OpenGL Tutorial: http://cs.uccs.edu/~semwal/indexGLTutorial.html Also NeHe productions does a realy great job breaking down OpenGL into lessons: My favorite! http://nehe.gamedev.net/ Also, since your accessing OpenGL through PyOpenGL, you should look at: http://pyopengl.sourceforge.net/documentation/ for other links and examples. Enjoy - jaime Another good source of information is the Red Book. You can find an old version online here: http://www.opengl.org/documentation/red_book/ Although it only covers OpenGL 1.1, it should contain all the basic information you need to help you get started. David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Help about the use of OpenGL with PyQt
On Sat, Apr 4, 2009 at 6:43 PM, Jamie Riotto jamie.rio...@gmail.com wrote: OpenGL Tutorial: http://cs.uccs.edu/~semwal/indexGLTutorial.htmlhttp://cs.uccs.edu/%7Esemwal/indexGLTutorial.html Also NeHe productions does a realy great job breaking down OpenGL into lessons: My favorite! http://nehe.gamedev.net/ Also, since your accessing OpenGL through PyOpenGL, you should look at: http://pyopengl.sourceforge.net/documentation/ for other links and examples. Enjoy - jaime There are also the QGLViewer/PyQGLViewer couple. Basically QGLViewer is build on top of the Qt4 OpenGL widget and PyQGLViewer is its python bindings. http://www.libqglviewer.com/ http://pyqglviewer.gforge.inria.fr/wiki/doku.php bye Gianluca ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Help about the use of OpenGL with PyQt
Hello, I would like to draw for example a 3D triangle with OpenGL. I've tried to play with the example Hello GL proposed by PyQt. In the following code I would like to draw a red triangle and then a blue one. I also would like to set the xMin, xMax, yMin, yMax, zMin, zMax, for the point of view. My purpose would be to a 3D geometric viewers for educational purposes. Best regards. Christophe The code #!/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)
Re: [PyQt] Help about the use of OpenGL with PyQt
Christophe, Your problem is with your OpenGL syntax. Simply change GL.GL_QUADS (which draw quadrilaterals) with GL.GL_TRIANGLES (self evident). Also, it would be better to move those declarations into your triangle routine as follows: def triangle(self, x1, y1, z1, x2, y2, z2, x3, y3, z3,r,g,b): self.qglColor(QtGui.QColor(r,g,b)) GL.glBegin(GL.GL_TRIANGLES) GL.glVertex3d(x1, y1, z1) GL.glVertex3d(x2, y2, z2) GL.glVertex3d(x3, y3, z3) GL.glEnd() This way, each glBegin is guaranteed to have a closing glEnd. I believe it now works as you would expect... Cheers - jamie On Sat, Apr 4, 2009 at 9:04 AM, projetmbc projet...@club-internet.frwrote: Hello, I would like to draw for example a 3D triangle with OpenGL. I've tried to play with the example Hello GL proposed by PyQt. In the following code I would like to draw a red triangle and then a blue one. I also would like to set the xMin, xMax, yMin, yMax, zMin, zMax, for the point of view. My purpose would be to a 3D geometric viewers for educational purposes. Best regards. Christophe The code #!/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)
Re: [PyQt] Help about the use of OpenGL with PyQt
Your problem is with your OpenGL syntax. Simply change GL.GL_QUADS (which draw quadrilaterals) with GL.GL_TRIANGLES (self evident). Also, it would be better to move those declarations into your triangle routine as follows Thanks and sorry for this simple problem but I'm a real newbie with OpenGL. Where can I find documentations showing what kind of objects I can draw with OpenGL ? Best regards and thanks a lot. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Help about the use of OpenGL with PyQt
OpenGL Tutorial: http://cs.uccs.edu/~semwal/indexGLTutorial.html Also NeHe productions does a realy great job breaking down OpenGL into lessons: My favorite! http://nehe.gamedev.net/ Also, since your accessing OpenGL through PyOpenGL, you should look at: http://pyopengl.sourceforge.net/documentation/ for other links and examples. Enjoy - jaime On Sat, Apr 4, 2009 at 9:35 AM, projetmbc projet...@club-internet.frwrote: Your problem is with your OpenGL syntax. Simply change GL.GL_QUADS (which draw quadrilaterals) with GL.GL_TRIANGLES (self evident). Also, it would be better to move those declarations into your triangle routine as follows Thanks and sorry for this simple problem but I'm a real newbie with OpenGL. Where can I find documentations showing what kind of objects I can draw with OpenGL ? Best regards and thanks a lot. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Help about the use of OpenGL with PyQt
On Sat Apr 4 17:43:29 BST 2009, Jamie Riotto wrote: OpenGL Tutorial: http://cs.uccs.edu/~semwal/indexGLTutorial.html Also NeHe productions does a realy great job breaking down OpenGL into lessons: My favorite! http://nehe.gamedev.net/ Also, since your accessing OpenGL through PyOpenGL, you should look at: http://pyopengl.sourceforge.net/documentation/ for other links and examples. Enjoy - jaime Another good source of information is the Red Book. You can find an old version online here: http://www.opengl.org/documentation/red_book/ Although it only covers OpenGL 1.1, it should contain all the basic information you need to help you get started. David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
