|
0
|
1 # see http://www.sgi.com/software/opengl/advanced97/notes/node57.html for accum notes
|
|
|
2
|
|
341
|
3 import sys, time
|
|
|
4 import numpy as num
|
|
0
|
5 from OpenGL.GL import *
|
|
|
6 from OpenGL.Tk import *
|
|
341
|
7 import Image
|
|
|
8
|
|
|
9 def drawWithAlpha(imgString, w, h, alpha):
|
|
|
10 """without opengl extensions"""
|
|
|
11 t = time.time()
|
|
|
12 ar = num.reshape(num.fromstring(imgString, dtype='uint8'),
|
|
|
13 (w * h, 4))
|
|
|
14 print " tonum", time.time() - t
|
|
|
15 ar[:,3] *= alpha
|
|
|
16
|
|
|
17 print " scl", time.time() - t
|
|
|
18 glDrawPixels(w, h,
|
|
|
19 GL_RGBA, GL_UNSIGNED_BYTE, ar.tostring())
|
|
|
20 print " draw", time.time() - t
|
|
|
21
|
|
0
|
22
|
|
|
23 class Surface:
|
|
|
24 def Display(self, event=None):
|
|
341
|
25 assert 'GL_ARB_imaging' in glGetString(GL_EXTENSIONS).split()
|
|
|
26
|
|
0
|
27 glClearColor(0.0, 0.0, 0.0, 0)
|
|
|
28 glClear( GL_COLOR_BUFFER_BIT |GL_ACCUM_BUFFER_BIT)
|
|
341
|
29 glEnable(GL_BLEND)
|
|
|
30 #glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
|
|
|
31 glBlendFunc(GL_SRC_ALPHA, GL_DST_ALPHA)
|
|
0
|
32 l=glGenLists(1)
|
|
|
33 glNewList(l,GL_COMPILE)
|
|
|
34 glEndList()
|
|
|
35
|
|
|
36 # glDrawBuffer(GL_BACK)
|
|
|
37
|
|
341
|
38 for x, img in enumerate(self.image):
|
|
0
|
39 mag = self.scales[x].get()
|
|
|
40 print "pic %i at %f" % (x,mag)
|
|
341
|
41 # glClear(GL_COLOR_BUFFER_BIT)
|
|
|
42 #glBlendColor(1, 1, 1, mag) # needs ARB_imaging
|
|
|
43 drawWithAlpha(img, self.imageWidth, self.imageHeight, mag)
|
|
|
44
|
|
0
|
45
|
|
341
|
46 ## if x==0:
|
|
|
47 ## glAccum(GL_LOAD,mag)
|
|
|
48 ## else:
|
|
|
49 ## glAccum(GL_ACCUM,mag)
|
|
0
|
50
|
|
|
51 # glAccum(GL_ADD,self.x)
|
|
|
52 self.x=(self.x+.1)%2.0
|
|
341
|
53 ## glAccum(GL_RETURN,1)
|
|
0
|
54
|
|
|
55 def SetupWindow(self):
|
|
|
56 self.OglFrame = Frame()
|
|
|
57 self.OglFrame.pack(side = 'top',fill='both',expand=1)
|
|
|
58 self.QuitButton = Button(self.OglFrame, {'text':'Quit'})
|
|
|
59 self.QuitButton.bind('<ButtonRelease-1>', sys.exit)
|
|
|
60 self.QuitButton.pack({'side':'top'})
|
|
|
61
|
|
|
62
|
|
|
63 def SetupOpenGL(self):
|
|
341
|
64 self.ogl = Opengl(master=self.OglFrame, width = 512, height = 270, double = 1, depth = 0)
|
|
0
|
65 self.ogl.pack(side = 'top', expand = 1, fill = 'both')
|
|
|
66 self.ogl.set_centerpoint(0, 0, 0)
|
|
|
67 self.ogl.redraw = self.Display
|
|
|
68
|
|
|
69 for x in range(0,2):
|
|
|
70 self.scales[x] = Scale(self.OglFrame,label="s%i"%x,from_=0,to=1,res=.05,orient='horiz',command=self.ogl.tkRedraw)
|
|
|
71 self.scales[x].pack()
|
|
|
72
|
|
|
73
|
|
|
74 def __init__(self):
|
|
|
75 self.x=0
|
|
|
76 self.scales=[None,None]
|
|
|
77
|
|
|
78 self.SetupWindow()
|
|
|
79
|
|
|
80 self.image=[]
|
|
341
|
81 for filename in ('skyline/bg.png', 'skyline/cyc-lo-red.png'):
|
|
|
82 im = Image.open(filename)
|
|
|
83 im.thumbnail((200, 200))
|
|
0
|
84 self.imageWidth = im.size[0]
|
|
|
85 self.imageHeight = im.size[1]
|
|
341
|
86 self.image.append(im.convert("RGBA").tostring())#"raw", "RGB", 0, -1))
|
|
0
|
87 print self.imageWidth, self.imageHeight, self.imageWidth * self.imageHeight*4, len(self.image)
|
|
|
88
|
|
|
89 self.SetupOpenGL()
|
|
|
90
|
|
|
91 glDisable(GL_CULL_FACE)
|
|
|
92 # glEnable(GL_DEPTH_TEST)
|
|
|
93 # glEnable(GL_NORMALIZE)
|
|
|
94 glShadeModel(GL_FLAT)
|
|
|
95
|
|
|
96 self.ogl.tkRedraw()
|
|
|
97 self.ogl.mainloop()
|
|
|
98
|
|
|
99 if __name__ == '__main__':
|
|
|
100 Surface()
|
|
|
101
|
|
|
102 demo = Surface
|
