Attachment 1559 Details for Bug 2066 – Python Tk+OpenGL program demonstrating clipping bug

Python Tk+OpenGL program demonstrating clipping bug

test1.py (text/x-python), 2.33 KB, created by Yann Vernier on 2004-12-17 00:48:35 UTC

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Creator: Yann Vernier

Created: 2004-12-17 00:48:35 UTC

Size: 2.33 KB

patch

obsolete

>#!/usr/bin/env python
>
>## example python/pyopengl script to do tiled texturemapping.
>## By david konerding (dek@cgl.ucsf.edu)
>
>import sys, Image
>from OpenGL import Tk
>from OpenGL.GL import *
>
>class checker:
>
>    def makeImage(self, filename='NeHe.bmp'):
> 	im = Image.open(filename)
>	self.imageWidth = im.size[0]
>	self.imageHeight = im.size[1]
> 	self.image = im.tostring("raw", "RGBX", 0, -1)
>	
>    def display(self, event=None):
>    	glDisable(GL_TEXTURE_2D)
>	glScissor(000,000,250,500)
>	glClearColor(1.0, 0.0, 0.0, 0)
>	glClear(GL_COLOR_BUFFER_BIT)
>
>	glScissor(125,125,250,250)
>	glClearColor(0.0, 0.0, 1.0, 0)
>	glClear(GL_COLOR_BUFFER_BIT)
>
>	glScissor(0,0,500,500)
>
>    	glEnable(GL_TEXTURE_2D)
>	glBegin(GL_QUADS)
>	glTexCoord2f(0.0, 0.0);	glVertex3f(0.0, 0.0, 0.0)
>	glTexCoord2f(0.0, 2.0);	glVertex3f(0.0, 10., 0.0)
>	glTexCoord2f(2.0, 2.0);	glVertex3f(10. , 10., 0.0)
>	glTexCoord2f(2.0, 0.0);	glVertex3f(10., 0.0, 0.0)
>	glEnd()
>
>	glFlush()
>
>    def SetupWindow(self):
>	self.OglFrame = Tk.Frame()
>	self.OglFrame.pack(side = 'top')
>	self.QuitButton = Tk.Button(self.OglFrame, {'text':'Quit'})
>	self.QuitButton.bind('<ButtonRelease-1>', sys.exit)
>	self.QuitButton.pack({'side':'top'})
>	self.ogl = Tk.Opengl(master=self.OglFrame, width = 500, height = 500, double = 1)
>	self.ogl.pack(side = 'top', expand = 1, fill = 'both')
>##	self.ogl.set_eyepoint(900.)
>##	self.ogl.set_centerpoint(0, 0, 0)
>	self.ogl.redraw = self.display
>	# Basic 2D clipping of output. Works fine. Viewport would be used to reorient the output.
>	#glScissor(100,100,300,300)
>	glEnable(GL_SCISSOR_TEST)
>	self.SetupTexture()
>
>
>    def SetupTexture(self):
>	self.makeImage()
>	glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
>	glTexImage2D(GL_TEXTURE_2D, 0, 3, self.imageWidth, self.imageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,  self.image)
> 	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
> 	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
> 	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
> 	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
>	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
>	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
>	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL)
>	glEnable(GL_TEXTURE_2D)
>	glShadeModel(GL_FLAT)
>
>
>    def __init__(self):
>	self.SetupWindow()
>	self.ogl.mainloop()
>
>if __name__ == '__main__':
>    checker()
>
>

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