Title: Use wxPython/OpenGL to draw a sphere
Submitter: Rick Muller (other recipes)
Last Updated: 2004/10/27
Version no: 1.0
Category: Image

Description:

A simple wxPython/OpenGL application to draw a sphere.

Source: Text Source

from wxPython.glcanvas import wxGLCanvas
from wxPython.wx import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
from OpenGL.GL import *
import sys,math

name = 'ball_glut'

class myGLCanvas(wxGLCanvas):
    def __init__(self, parent):
	wxGLCanvas.__init__(self, parent,-1)
	EVT_PAINT(self, self.OnPaint)
	self.init = 0
	return

    def OnPaint(self,event):
	dc = wxPaintDC(self)
	self.SetCurrent()
	if not self.init:
	    self.InitGL()
	    self.init = 1
	self.OnDraw()
	return

    def OnDraw(self):
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        glPushMatrix()
	color = [1.0,0.,0.,1.]
	glMaterialfv(GL_FRONT,GL_DIFFUSE,color)
	glutSolidSphere(2,20,20)
	glPopMatrix()
        self.SwapBuffers()
        return
	
    def InitGL(self):
        # set viewing projection
        light_diffuse = [1.0, 1.0, 1.0, 1.0]
        light_position = [1.0, 1.0, 1.0, 0.0]

        glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse)
        glLightfv(GL_LIGHT0, GL_POSITION, light_position)

        glEnable(GL_LIGHTING)
        glEnable(GL_LIGHT0)
        glEnable(GL_DEPTH_TEST)
        glClearColor(0.0, 0.0, 0.0, 1.0)
        glClearDepth(1.0)

        glMatrixMode(GL_PROJECTION)
        glLoadIdentity()
        gluPerspective(40.0, 1.0, 1.0, 30.0)

        glMatrixMode(GL_MODELVIEW)
        glLoadIdentity()
        gluLookAt(0.0, 0.0, 10.0,
                  0.0, 0.0, 0.0,
                  0.0, 1.0, 0.0)
        return
    

def main():
    app = wxPySimpleApp()
    frame = wxFrame(None,-1,'ball_wx',wxDefaultPosition,wxSize(400,400))
    canvas = myGLCanvas(frame)
    frame.Show()
    app.MainLoop()

if __name__ == '__main__': main()

Discussion:

Here's a wxPython version of the pure PythonOpenGL recipe for drawing a ball. Useful as a test to make sure that the wxPython/OpenGL link is working well, and as a starting point for more complicated applications.