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1 # see http://www.sgi.com/software/opengl/advanced97/notes/node57.html for accum notes
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2
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3 import sys
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4 from Image import *
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5 from OpenGL.GL import *
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6 from OpenGL.Tk import *
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7
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8 class Surface:
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9 def Display(self, event=None):
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10
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11 glClearColor(0.0, 0.0, 0.0, 0)
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12 glClear( GL_COLOR_BUFFER_BIT |GL_ACCUM_BUFFER_BIT)
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13
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14 l=glGenLists(1)
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15 glNewList(l,GL_COMPILE)
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16 glEndList()
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17
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18 # glDrawBuffer(GL_BACK)
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19
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20 for x in range(1,2):
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21
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22 mag = self.scales[x].get()
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23 print "pic %i at %f" % (x,mag)
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24 glClear(GL_COLOR_BUFFER_BIT)
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25 glDrawPixels(self.imageWidth, self.imageHeight, GL_RGB, GL_UNSIGNED_BYTE, self.image[x])
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26
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27 if x==0:
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28 glAccum(GL_LOAD,mag)
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29 else:
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30 glAccum(GL_ACCUM,mag)
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31
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32 # glAccum(GL_ADD,self.x)
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33 self.x=(self.x+.1)%2.0
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34 print "return"
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35 glAccum(GL_RETURN,1)
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36
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37 def SetupWindow(self):
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38 self.OglFrame = Frame()
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39 self.OglFrame.pack(side = 'top',fill='both',expand=1)
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40 self.QuitButton = Button(self.OglFrame, {'text':'Quit'})
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41 self.QuitButton.bind('<ButtonRelease-1>', sys.exit)
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42 self.QuitButton.pack({'side':'top'})
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43
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44
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45 def SetupOpenGL(self):
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46 self.ogl = Opengl(master=self.OglFrame, width = 270, height = 270, double = 1, depth = 0)
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47 self.ogl.pack(side = 'top', expand = 1, fill = 'both')
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48 self.ogl.set_centerpoint(0, 0, 0)
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49 self.ogl.redraw = self.Display
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50
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51 for x in range(0,2):
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52 self.scales[x] = Scale(self.OglFrame,label="s%i"%x,from_=0,to=1,res=.05,orient='horiz',command=self.ogl.tkRedraw)
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53 self.scales[x].pack()
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54
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55
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56 def __init__(self):
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57 self.x=0
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58 self.scales=[None,None]
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59
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60 self.SetupWindow()
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61
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62 self.image=[]
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63 for filename in ('pic1.ppm','pic2.ppm'):
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64 im = open(filename)
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65 self.imageWidth = im.size[0]
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66 self.imageHeight = im.size[1]
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67 self.image.append(im.tostring("raw", "RGB", 0, -1))
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68 print self.imageWidth, self.imageHeight, self.imageWidth * self.imageHeight*4, len(self.image)
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69
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70 self.SetupOpenGL()
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71
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72 glDisable(GL_CULL_FACE)
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73 # glEnable(GL_DEPTH_TEST)
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74 # glEnable(GL_NORMALIZE)
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75 glShadeModel(GL_FLAT)
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76
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77 self.ogl.tkRedraw()
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78 self.ogl.mainloop()
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79
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80 if __name__ == '__main__':
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81 Surface()
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82
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83 demo = Surface
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