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gerrit-public.fairphone.software / platform / external / python / cpython3 / c0d2d51dd2a57b4c26d3abec63860b90e93d34de / . / Demo / sgi / gl / zrgb.py
blob: 2ad68c997b1c1733075728bd95d8778f94b87934 [file] [log] [blame]
Guido van Rossumf06ee5f1996-11-27 19:52:01 +0000[diff] [blame]1#! /usr/bin/env python
Guido van Rossum453bd401992-03-30 13:18:37 +0000[diff] [blame]2
3# zrgb (Requires Z buffer.)
4#
5# This program demostrates zbuffering 3 intersecting RGB polygons while
6# in doublebuffer mode where, movement of the mouse with the LEFTMOUSE
7# button depressed will, rotate the 3 polygons. This is done by compound
8# rotations allowing continuous screen-oriented rotations.
9#
10# Press the "Esc" key to exit.
11
12from gl import *
13from GL import *
14from DEVICE import *
15
16
17idmat=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
18
19def main() :
20 #
21 # old and new mouse position
22 #
23 #
24 mode = 0
25 omx = 0
26 mx = 0
27 omy = 0
28 my = 0
29 #
30 objmat=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
31 #
32 initialize ()
33 #
34 draw_scene (objmat)
35 #
36 while (1) :
37 #
38 dev, val = qread()
39 #
40 if dev == ESCKEY :
41 if val :
42 break
43 # exit when key is going up, not down
44 # this avoids the scenario where a window
45 # underneath this program's window
46 # would otherwise "eat up" the up-
47 # event of the Esc key being released
48 return
49 #
50 elif dev == REDRAW :
51 reshapeviewport()
52 draw_scene(objmat)
53 #
54 elif dev == LEFTMOUSE:
55 omx = mx
56 omy = my
57 if val :
58 mode = 1
59 else :
60 mode = 0
61 elif dev == MOUSEX :
62 omx = mx
63 mx = val
64 #print omx, mx
65 objmat = update_scene(objmat,mx,my,omx,omy,mode)
66 #
67 elif dev == MOUSEY :
68 omy = my
69 my = val
70 #print omy, my
71 objmat = update_scene(objmat,mx,my,omx,omy,mode)
72 #
73
74
75def initialize () :
76 #
77 foreground ()
78 keepaspect(5, 4)
79 w = winopen('Zbuffered RGB')
80 #
81 doublebuffer()
82 RGBmode()
83 gconfig()
84 zbuffer(1)
85 lsetdepth(0x0, 0x7FFFFF)
86 #
87 qdevice(ESCKEY)
88 qdevice(LEFTMOUSE)
89 qdevice(MOUSEX)
90 qdevice(MOUSEY)
91
92def update_scene (mat, mx, my, omx, omy, mode) :
93 #
94 if mode == 1 :
95 mat = orient(mat, mx, my, omx, omy)
96 draw_scene(mat)
97 return mat
98
99def orient (mat, mx, my, omx, omy) :
100 #
101 #
102 pushmatrix()
103 loadmatrix(idmat)
104 #
105 if mx - omx : rot (float (mx - omx), 'y')
106 if omy - my : rot (float (omy - my), 'x')
107 #
108 multmatrix(mat)
109 mat = getmatrix()
110 #
111 popmatrix()
112 #
113 return mat
114
115def draw_scene (mat) :
116 RGBcolor(40, 100, 200)
117 clear()
118 zclear()
119 #
120 perspective(400, 1.25, 30.0, 60.0)
121 translate(0.0, 0.0, -40.0)
122 multmatrix(mat)
123 #
124 # skews original view to show all polygons
125 #
126 rotate(-580, 'y')
127 draw_polys()
128 #
129 swapbuffers()
130
131polygon1 = [(-10.0,-10.0,0.0),(10.0,-10.0,0.0),(-10.0,10.0,0.0)]
132
133polygon2 = [(0.0,-10.0,-10.0),(0.0,-10.0,10.0),(0.0,5.0,-10.0)]
134
135polygon3 = [(-10.0,6.0,4.0),(-10.0,3.0,4.0),(4.0,-9.0,-10.0),(4.0,-6.0,-10.0)]
136
137def draw_polys():
138 bgnpolygon()
139 cpack(0x0)
140 v3f(polygon1[0])
141 cpack(0x007F7F7F)
142 v3f(polygon1[1])
143 cpack(0x00FFFFFF)
144 v3f(polygon1[2])
145 endpolygon()
146 #
147 bgnpolygon()
148 cpack(0x0000FFFF)
149 v3f(polygon2[0])
150 cpack(0x007FFF00)
151 v3f(polygon2[1])
152 cpack(0x00FF0000)
153 v3f(polygon2[2])
154 endpolygon()
155 #
156 bgnpolygon()
157 cpack(0x0000FFFF)
158 v3f(polygon3[0])
159 cpack(0x00FF00FF)
160 v3f(polygon3[1])
161 cpack(0x00FF0000)
162 v3f(polygon3[2])
163 cpack(0x00FF00FF)
164 v3f(polygon3[3])
165 endpolygon()
166
167
168main ()