| Guido van Rossum | f06ee5f | 1996-11-27 19:52:01 +0000 | [diff] [blame] | 1 | #! /usr/bin/env python |
| Guido van Rossum | 453bd40 | 1992-03-30 13:18:37 +0000 | [diff] [blame] | 2 | |
| 3 | # backface |
| 4 | # |
| 5 | # draw a cube that can run with backface() turned on or off. |
| 6 | # cube is moved when LEFTMOUSE is pressed and mouse itself is moved. |
| 7 | |
| 8 | from gl import * |
| 9 | from DEVICE import * |
| 10 | from GL import * |
| 11 | |
| 12 | CUBE_SIZE = 200.0 |
| 13 | CUBE_OBJ = 1 |
| 14 | |
| 15 | def main () : |
| 16 | # |
| 17 | x = 0 |
| 18 | y = 0 |
| 19 | moveit = 0 |
| 20 | # |
| 21 | initialize() |
| 22 | # |
| 23 | while (1) : |
| 24 | # |
| 25 | while (qtest()) : |
| 26 | dev, val = qread() |
| 27 | # |
| 28 | if dev == ESCKEY : |
| 29 | backface(0) |
| 30 | return |
| 31 | # |
| 32 | elif dev == REDRAW : |
| 33 | reshapeviewport() |
| 34 | drawcube(x,y) |
| 35 | # |
| 36 | elif dev == LEFTMOUSE : |
| 37 | # |
| 38 | # LEFTMOUSE down |
| 39 | moveit = val |
| 40 | # |
| 41 | elif dev == BKEY : |
| 42 | backface(1) |
| 43 | drawcube(x,y) |
| 44 | # |
| 45 | elif dev == FKEY : |
| 46 | backface(0) |
| 47 | drawcube(x,y) |
| 48 | # |
| 49 | if moveit : |
| 50 | x = getvaluator(MOUSEX) |
| 51 | y = getvaluator(MOUSEY) |
| 52 | drawcube(x,y) |
| 53 | |
| 54 | |
| 55 | def initialize () : |
| 56 | foreground () |
| 57 | keepaspect (1, 1) |
| 58 | gid = winopen('backface') |
| 59 | winset(gid) |
| 60 | winconstraints() |
| 61 | # |
| 62 | doublebuffer() |
| 63 | gconfig() |
| 64 | shademodel(FLAT) |
| 65 | # |
| 66 | ortho(-1024.0, 1024.0, -1024.0, 1024.0, -1024.0, 1024.0) |
| 67 | # |
| 68 | qdevice(ESCKEY) |
| 69 | qdevice(REDRAW) |
| 70 | qdevice(LEFTMOUSE) |
| 71 | qdevice(BKEY) |
| 72 | qdevice(FKEY) |
| 73 | qenter(REDRAW,gid) |
| 74 | # |
| 75 | backface(1) |
| 76 | |
| 77 | # |
| 78 | # define a cube |
| 79 | def cube () : |
| 80 | # |
| 81 | # front face |
| 82 | pushmatrix() |
| 83 | translate(0.0,0.0,CUBE_SIZE) |
| 84 | color(RED) |
| 85 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 86 | popmatrix() |
| 87 | # |
| 88 | # right face |
| 89 | pushmatrix() |
| 90 | translate(CUBE_SIZE, 0.0, 0.0) |
| 91 | rotate(900, 'y') |
| 92 | color(GREEN) |
| 93 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 94 | popmatrix() |
| 95 | # |
| 96 | # back face |
| 97 | pushmatrix() |
| 98 | translate(0.0, 0.0, -CUBE_SIZE) |
| 99 | rotate(1800, 'y') |
| 100 | color(BLUE) |
| 101 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 102 | popmatrix() |
| 103 | # |
| 104 | # left face |
| 105 | pushmatrix() |
| 106 | translate(-CUBE_SIZE, 0.0, 0.0) |
| 107 | rotate(-900, 'y') |
| 108 | color(CYAN) |
| 109 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 110 | popmatrix() |
| 111 | # |
| 112 | # top face |
| 113 | pushmatrix() |
| 114 | translate(0.0, CUBE_SIZE, 0.0) |
| 115 | rotate(-900, 'x') |
| 116 | color(MAGENTA) |
| 117 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 118 | popmatrix() |
| 119 | # |
| 120 | # bottom face |
| 121 | pushmatrix() |
| 122 | translate(0.0, -CUBE_SIZE, 0.0) |
| 123 | rotate(900, 'x') |
| 124 | color(YELLOW) |
| 125 | rectf(-CUBE_SIZE,-CUBE_SIZE,CUBE_SIZE,CUBE_SIZE) |
| 126 | popmatrix() |
| 127 | |
| 128 | def drawcube(x,y) : |
| 129 | # |
| 130 | pushmatrix() |
| 131 | rotate(2*x, 'x') |
| 132 | rotate(2*y, 'y') |
| 133 | color(BLACK) |
| 134 | clear() |
| 135 | cube() |
| 136 | popmatrix() |
| 137 | swapbuffers() |
| 138 | |
| 139 | |
| 140 | main () |