libtthimage/Lib/drawpatt.c

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2022-06-27 02:19:31 +02:00
/*
* DRAWPATT.C
* ==========
*
* new 1st July 2003
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "../tthimage.h"
/*::------------------------------------------------------------------::*/
/*
* ATTENTION CETTE FONCTION COREDUMPE SI LE RECTANGLE
* DEPASSE SUR UN BORD DE L'IMAGE !!!
*/
int
Image_draw_rect_from_patt(Image_Desc *img, Image_Rect *rect, Image_Desc *patt)
{
int x, y, xp, yp, xm, ym;
int r, g, b;
#if DEBUG_LEVEL
fprintf(stderr, ">>>> %s\n", __func__);
#endif
if ( patt == NULL )
{
fprintf(stderr, "Badaboum!\n");
exit(5);
}
for (x=0; x<rect->w; x++)
{
xp = x % patt->width;
if (xp > img->width)
{
continue;
}
for (y=0; y<rect->h; y++)
{
yp = y % patt->height;
if (yp > img->height)
{
continue;
}
Image_getRGB(patt, xp, yp, &r, &g, &b);
Image_plotRGB(img, x+rect->x, y+rect->y, r, g, b);
}
}
return FUNC_NOT_FINISH;
}
/*
* ATTENTION CETTE FONCTION COREDUMPE SI LE RECTANGLE
* DEPASSE SUR UN BORD DE L'IMAGE !!!
*/
/*::------------------------------------------------------------------::*/