demo.c revision 30465 
1/*-
2 * Copyright (c) 1991-1997 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *  $Id: demo.c,v 1.16 1997/08/17 20:46:55 sos Exp sos $
29 */
30
31#include <sys/types.h>
32#include <machine/console.h>
33#include "vgl.h"
34
35int
36main(int argc, char **argv)
37{
38  int x, y, xsize, ysize, i,j;
39  VGLBitmap tmp;
40
41  // set graphics mode, here 320x240 256 colors
42  // supported modes are (from <machine/console.h>):
43  // SW_VGA_CG320:	std VGA 320x200 256 colors
44  // SW_VGA_MODEX:	Modex VGA 320x240 256 colors
45  // SW_VGA_VG640:	std VGA 640x480 16 colors
46  VGLInit(SW_VGA_MODEX);
47
48  // initialize mouse and show pointer
49  VGLMouseInit(VGL_MOUSESHOW);
50
51  // VGLDisplay is a ptr to a struct Bitmap defined and initialized by
52  // libvgl. The Bitmap points directly to screen memory etc.
53  xsize=VGLDisplay->Xsize;
54  ysize=VGLDisplay->Ysize;
55
56  // alloc a new bitmap (there should be a function for this)
57  tmp.Type = MEMBUF; tmp.Bitmap = (char*)malloc(256*256);
58  tmp.Xsize = 256; tmp.Ysize = 256;
59
60  // fill the screen with colored lines
61  for (y=0; y<ysize; y++)
62    VGLLine(VGLDisplay, 0, y, xsize-1, y, y/2 % 256);
63
64  // draw some lines and circles just to show off
65  VGLLine(VGLDisplay, 0, 0, xsize-1, ysize-1, 63);
66  VGLLine(VGLDisplay, 0, ysize-1, xsize-1, 0, 63);
67  VGLLine(VGLDisplay, 0, 0, 0, ysize-1, 63);
68  VGLLine(VGLDisplay, xsize-1, 0, xsize-1, ysize-1, 63);
69  VGLEllipse(VGLDisplay, 256, 0, 256, 256, 63);
70  VGLEllipse(VGLDisplay, 0, 256, 256, 256, 0);
71
72  // some text is also usefull
73  VGLBitmapString(VGLDisplay, 100,100,
74    "This is text", 63, 0, 0, VGL_DIR_RIGHT);
75  sleep(2);
76  VGLBitmapString(VGLDisplay, 100,100,
77    "This is text", 63, 0, 0, VGL_DIR_UP);
78  sleep(2);
79  VGLBitmapString(VGLDisplay, 100,100,
80    "This is text", 63, 0, 0, VGL_DIR_LEFT);
81  sleep(2);
82  VGLBitmapString(VGLDisplay, 100,100,
83    "This is text", 63, 0, 0, VGL_DIR_DOWN);
84  sleep(2);
85
86  // now show some simple bitblit
87  for (i=0; i<256; i++)
88    for (j=0; j<256; j++)
89      tmp.Bitmap[i+256*j] = i%16;
90  VGLBitmapCopy(&tmp, 0, 0, VGLDisplay, 0, 0, 128, 128);
91  for (i=0; i<256; i++)
92    for (j=0; j<256; j++)
93      tmp.Bitmap[i+256*j] = j%16;
94  VGLBitmapCopy(&tmp, 0, 0, VGLDisplay, 3, 128, 128, 128);
95  sleep(2);
96  VGLBitmapCopy(VGLDisplay, 237, 311, &tmp, 64, 64, 128, 128);
97  VGLBitmapCopy(&tmp, 32, 32, VGLDisplay, 400, 128, 128, 128);
98  sleep(2);
99  VGLBitmapCopy(VGLDisplay, 300, 300, VGLDisplay, 500, 128, 128, 128);
100  sleep(5);
101  i=0;
102
103  // loop around drawing and copying
104  while (++i) {
105    VGLBitmapCopy(VGLDisplay, rand()%xsize, rand()%ysize,
106  		  VGLDisplay, rand()%xsize, rand()%ysize,
107  		  rand()%xsize, rand()%ysize);
108    VGLLine(VGLDisplay,  rand()%xsize, rand()%ysize,
109            rand()%xsize, rand()%ysize, rand()%256);
110    VGLEllipse(VGLDisplay, rand()%xsize, rand()%ysize,
111   	       rand()%xsize/2, rand()%ysize/2, rand()%256);
112    rand();
113    if (i > 1000) break;
114  }
115
116  // restore screen to its original mode
117  VGLEnd();
118  return 0;
119}
120
121