void vgainit(void)
{
video_mode=VIDEO_MODE_VGA_16;
windowed_palette[0] = vga16_pal1_rgbq;
windowed_palette[1] = vga16_pal1i_rgbq;
windowed_palette[2] = vga16_pal2_rgbq;
windowed_palette[3] = vga16_pal2i_rgbq;
destroy_palettes();
init_palettes();
}
int flam3_get_palette(int n, flam3_palette c, double hue_rotation) {
int cmap_len = 256;
int idx, i, j;
if (NULL == the_palettes) {
char *d = getenv("flam3_palettes");
init_palettes(d ? d : (PACKAGE_DATA_DIR "/flam3-palettes.xml"));
}
if (flam3_palette_random == n)
n = the_palettes[random()%npalettes].number;
for (idx = 0; idx < npalettes; idx++) {
if (n == the_palettes[idx].number) {
/* Loop over elements of cmap */
for (i = 0; i < cmap_len; i++) {
int ii = (i * 256) / cmap_len;
double rgb[3], hsv[3];
/* Colors are in 0-1 space */
for (j = 0; j < 3; j++)
rgb[j] = the_palettes[idx].colors[ii][j] / 255.0;
rgb2hsv(rgb, hsv);
hsv[0] += hue_rotation * 6.0;
hsv2rgb(hsv, rgb);
c[i].index = i;
for (j = 0; j < 3; j++)
c[i].color[j] = rgb[j];
c[i].color[3] = 1.0;
}
return n;
}
}
fprintf(stderr, "warning: palette number %d not found, using white.\n", n);
for (i = 0; i < cmap_len; i++) {
c[i].index = i;
for (j = 0; j < 4; j++)
c[i].color[j] = 1.0;
}
return flam3_palette_random;
}
