share/examples/libvgl/demo.c

   1 /*-
   2  * Copyright (c) 1991-1997 Søren 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 without 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  * $FreeBSD$
  29  */
  30
  31 #include <sys/types.h>
  32 #include <sys/fbio.h>
  33 #include <sys/kbio.h>
  34 #include <sys/consio.h>
  35 #include <vgl.h>
  36
  37 int
  38 main(int argc, char **argv)
  39 {
  40   int y, xsize, ysize, i,j;
  41   VGLBitmap *tmp;
  42
  43   // set graphics mode, here 320x240 256 colors
  44   // supported modes are (from <sys/consio.h>):
  45   // SW_VGA_CG320:      std VGA 320x200 256 colors
  46   // SW_VGA_MODEX:      Modex VGA 320x240 256 colors
  47   // SW_VGA_VG640:      std VGA 640x480 16 colors
  48   VGLInit(SW_VGA_MODEX);
  49
  50   // initialize mouse and show pointer
  51   VGLMouseInit(VGL_MOUSESHOW);
  52
  53   // VGLDisplay is a ptr to a struct Bitmap defined and initialized by
  54   // libvgl. The Bitmap points directly to screen memory etc.
  55   xsize=VGLDisplay->Xsize;
  56   ysize=VGLDisplay->Ysize;
  57
  58   // alloc a new bitmap
  59   tmp = VGLBitmapCreate(MEMBUF, 256, 256, NULL);
  60   VGLBitmapAllocateBits(tmp);
  61   VGLClear(tmp, 0);
  62
  63   // fill the screen with colored lines
  64   for (y=0; y<ysize; y++)
  65     VGLLine(VGLDisplay, 0, y, xsize-1, y, y/2 % 256);
  66
  67   // draw some lines and circles just to show off
  68   VGLLine(VGLDisplay, 0, 0, xsize-1, ysize-1, 63);
  69   VGLLine(VGLDisplay, 0, ysize-1, xsize-1, 0, 63);
  70   VGLLine(VGLDisplay, 0, 0, 0, ysize-1, 63);
  71   VGLLine(VGLDisplay, xsize-1, 0, xsize-1, ysize-1, 63);
  72   VGLEllipse(VGLDisplay, 256, 0, 256, 256, 63);
  73   VGLEllipse(VGLDisplay, 0, 256, 256, 256, 0);
  74
  75   // some text is also usefull
  76   VGLBitmapString(VGLDisplay, 100,100,
  77     "This is text", 63, 0, 0, VGL_DIR_RIGHT);
  78   sleep(2);
  79   VGLBitmapString(VGLDisplay, 100,100,
  80     "This is text", 63, 0, 0, VGL_DIR_UP);
  81   sleep(2);
  82   VGLBitmapString(VGLDisplay, 100,100,
  83     "This is text", 63, 0, 0, VGL_DIR_LEFT);
  84   sleep(2);
  85   VGLBitmapString(VGLDisplay, 100,100,
  86     "This is text", 63, 0, 0, VGL_DIR_DOWN);
  87   sleep(2);
  88
  89   // now show some simple bitblit
  90   for (i=0; i<256; i++)
  91     for (j=0; j<256; j++)
  92       tmp->Bitmap[i+256*j] = i%16;
  93   VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 0, 0, 128, 128);
  94   for (i=0; i<256; i++)
  95     for (j=0; j<256; j++)
  96       tmp->Bitmap[i+256*j] = j%16;
  97   VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 3, 128, 128, 128);
  98   sleep(2);
  99   VGLBitmapCopy(VGLDisplay, 237, 311, tmp, 64, 64, 128, 128);
 100   VGLBitmapCopy(tmp, 32, 32, VGLDisplay, 400, 128, 128, 128);
 101   sleep(2);
 102   VGLBitmapCopy(VGLDisplay, 300, 300, VGLDisplay, 500, 128, 128, 128);
 103   sleep(5);
 104   i=0;
 105
 106   // loop around drawing and copying
 107   while (++i) {
 108     VGLBitmapCopy(VGLDisplay, rand()%xsize, rand()%ysize,
 109                   VGLDisplay, rand()%xsize, rand()%ysize,
 110                   rand()%xsize, rand()%ysize);
 111     VGLLine(VGLDisplay,  rand()%xsize, rand()%ysize,
 112             rand()%xsize, rand()%ysize, rand()%256);
 113     VGLEllipse(VGLDisplay, rand()%xsize, rand()%ysize,
 114                rand()%xsize/2, rand()%ysize/2, rand()%256);
 115     rand();
 116     if (i > 1000) break;
 117   }
 118
 119   // restore screen to its original mode
 120   VGLEnd();
 121   return 0;
 122 }
 123