/share/examples/libvgl/demo.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 122 lines · 66 code · 12 blank · 44 comment · 7 complexity · 4ad6ea3c4bf37783e53a2aa487c57192 MD5 · raw file
- /*-
- * Copyright (c) 1991-1997 Søren Schmidt
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer
- * in this position and unchanged.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
- #include <sys/types.h>
- #include <sys/fbio.h>
- #include <sys/kbio.h>
- #include <sys/consio.h>
- #include <vgl.h>
- int
- main(int argc, char **argv)
- {
- int y, xsize, ysize, i,j;
- VGLBitmap *tmp;
- // set graphics mode, here 320x240 256 colors
- // supported modes are (from <sys/consio.h>):
- // SW_VGA_CG320: std VGA 320x200 256 colors
- // SW_VGA_MODEX: Modex VGA 320x240 256 colors
- // SW_VGA_VG640: std VGA 640x480 16 colors
- VGLInit(SW_VGA_MODEX);
- // initialize mouse and show pointer
- VGLMouseInit(VGL_MOUSESHOW);
- // VGLDisplay is a ptr to a struct Bitmap defined and initialized by
- // libvgl. The Bitmap points directly to screen memory etc.
- xsize=VGLDisplay->Xsize;
- ysize=VGLDisplay->Ysize;
- // alloc a new bitmap
- tmp = VGLBitmapCreate(MEMBUF, 256, 256, NULL);
- VGLBitmapAllocateBits(tmp);
- VGLClear(tmp, 0);
- // fill the screen with colored lines
- for (y=0; y<ysize; y++)
- VGLLine(VGLDisplay, 0, y, xsize-1, y, y/2 % 256);
- // draw some lines and circles just to show off
- VGLLine(VGLDisplay, 0, 0, xsize-1, ysize-1, 63);
- VGLLine(VGLDisplay, 0, ysize-1, xsize-1, 0, 63);
- VGLLine(VGLDisplay, 0, 0, 0, ysize-1, 63);
- VGLLine(VGLDisplay, xsize-1, 0, xsize-1, ysize-1, 63);
- VGLEllipse(VGLDisplay, 256, 0, 256, 256, 63);
- VGLEllipse(VGLDisplay, 0, 256, 256, 256, 0);
- // some text is also useful
- VGLBitmapString(VGLDisplay, 100,100,
- "This is text", 63, 0, 0, VGL_DIR_RIGHT);
- sleep(2);
- VGLBitmapString(VGLDisplay, 100,100,
- "This is text", 63, 0, 0, VGL_DIR_UP);
- sleep(2);
- VGLBitmapString(VGLDisplay, 100,100,
- "This is text", 63, 0, 0, VGL_DIR_LEFT);
- sleep(2);
- VGLBitmapString(VGLDisplay, 100,100,
- "This is text", 63, 0, 0, VGL_DIR_DOWN);
- sleep(2);
- // now show some simple bitblit
- for (i=0; i<256; i++)
- for (j=0; j<256; j++)
- tmp->Bitmap[i+256*j] = i%16;
- VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 0, 0, 128, 128);
- for (i=0; i<256; i++)
- for (j=0; j<256; j++)
- tmp->Bitmap[i+256*j] = j%16;
- VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 3, 128, 128, 128);
- sleep(2);
- VGLBitmapCopy(VGLDisplay, 237, 311, tmp, 64, 64, 128, 128);
- VGLBitmapCopy(tmp, 32, 32, VGLDisplay, 400, 128, 128, 128);
- sleep(2);
- VGLBitmapCopy(VGLDisplay, 300, 300, VGLDisplay, 500, 128, 128, 128);
- sleep(5);
- i=0;
- // loop around drawing and copying
- while (++i) {
- VGLBitmapCopy(VGLDisplay, rand()%xsize, rand()%ysize,
- VGLDisplay, rand()%xsize, rand()%ysize,
- rand()%xsize, rand()%ysize);
- VGLLine(VGLDisplay, rand()%xsize, rand()%ysize,
- rand()%xsize, rand()%ysize, rand()%256);
- VGLEllipse(VGLDisplay, rand()%xsize, rand()%ysize,
- rand()%xsize/2, rand()%ysize/2, rand()%256);
- rand();
- if (i > 1000) break;
- }
- // restore screen to its original mode
- VGLEnd();
- return 0;
- }