mirror of
https://github.com/gryf/wmaker.git
synced 2025-12-19 20:38:08 +01:00
135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
|
|
* libwmfun - WindowMaker texture function library
|
|
* Copyright (C) 1999 Tobias Gloth
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
/*
|
|
* $Id$
|
|
*
|
|
* $Log$
|
|
* Revision 1.1 2000/12/03 18:58:41 id
|
|
* initiate plugins branch
|
|
*
|
|
* Revision 1.1.1.1 1999/02/21 17:16:47 gloth
|
|
* initial revision
|
|
*
|
|
*/
|
|
|
|
#include "getopt.h"
|
|
#include <math.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include "generic.h"
|
|
|
|
RImage *waves (int argc, char **argv, int width, int height, int relief) {
|
|
|
|
int i, j, k, done, sine [256];
|
|
int from[3] = { 0x00, 0x00, 0x00 };
|
|
int to[3] = { 0xff, 0xff, 0xff };
|
|
int layers, range, dx[1000], dy[1000];
|
|
RImage *image;
|
|
unsigned char *cptr;
|
|
|
|
int option_index = 0;
|
|
int c;
|
|
|
|
optind = 1;
|
|
for (done=0; !done; ) {
|
|
static struct option long_options[] = {
|
|
{"from", 1, 0, 'f'},
|
|
{"to", 1, 0, 't'},
|
|
{0, 0, 0, 0}
|
|
};
|
|
|
|
c = getopt_long (argc, argv, "f:t:",
|
|
long_options, &option_index);
|
|
if (c == -1) {
|
|
break;
|
|
}
|
|
|
|
switch (c) {
|
|
case 'f':
|
|
if (!parse_color (optarg, from)) {
|
|
error ("invalid color: %s\n", optarg);
|
|
return 0;
|
|
}
|
|
break;
|
|
case 't':
|
|
if (!parse_color (optarg, to)) {
|
|
error ("invalid color: %s\n", optarg);
|
|
return 0;
|
|
}
|
|
break;
|
|
default:
|
|
done = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (!start_image ("waves", argc, 2, 3, width, height, &image)) {
|
|
return (RImage *)0;
|
|
}
|
|
|
|
layers = atoi (argv[0]);
|
|
range = atoi (argv[1]);
|
|
|
|
if (layers <= 0) {
|
|
layers = 1;
|
|
}
|
|
if (layers > 256) {
|
|
layers = 256;
|
|
}
|
|
|
|
if (range <= 0) {
|
|
range = 1;
|
|
}
|
|
|
|
for (i=0; i<256; i++) {
|
|
sine[i] = (int) (127.0 * sin (2.0 * M_PI * i / 256)) + 128;
|
|
}
|
|
|
|
srand (time (0));
|
|
|
|
for (i=0; i<layers; i++) {
|
|
dx[i] = random_int (range) - range / 2;
|
|
dy[i] = random_int (range) - range / 2;
|
|
}
|
|
|
|
cptr = image->data;
|
|
for (i=0; i<height; i++) {
|
|
for (j=0; j<width; j++) {
|
|
int output[3], value = 0;
|
|
for (k=0; k<layers; k++) {
|
|
value += sine[(j*dx[k]+i*dy[k]) & 255];
|
|
}
|
|
interpolate_color (output, from, to, value / layers);
|
|
*cptr++ = output[0];
|
|
*cptr++ = output[1];
|
|
*cptr++ = output[2];
|
|
if ( RRGBAFormat==image->format )
|
|
cptr++;
|
|
}
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|