89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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warp2.c
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---------------
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*/
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#include <stdio.h>
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#include <math.h>
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#include "../tthimage.h"
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/*::------------------------------------------------------------------::*/
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/*
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* Bon, ça marche avec des déplacements positifs, mais pour
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* revenir en arrière, on fait comment ?
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*/
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int
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Image_shift_xy(Image_Desc *src, Image_Desc *dst, int ox, int oy)
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{
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int x, y;
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int x2, y2, foo;
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#if DEBUG_LEVEL
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fprintf(stderr, "*** Image_shift_xy: work in progress...\n");
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fprintf(stderr, "src=%p dst=%p ox=%d oy=%d\n", src, dst, ox, oy);
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#endif
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if ( src == dst )
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{
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fprintf(stderr, "Image shift xy: can't overwrite, sorry\n");
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return IMG_OVERWRITE;
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}
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if ( (foo=Image_compare_desc(src, dst)) )
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{
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fprintf(stderr, "%s: images are differents %d\n", __func__, foo);
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return foo;
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}
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if ( (ox<0) || (ox>=src->width) )
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{
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fprintf(stderr, "Image shift xy: param ox %d out of range\n", ox);
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return INVALID_PARAM;
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}
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if ( (oy<0) || (oy>=src->height) )
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{
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fprintf(stderr, "Image shift xy: param oy %d out of range\n", oy);
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return INVALID_PARAM;
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}
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for (y=0; y<dst->height; y++)
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{
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y2 = (y+oy) % src->height;
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for (x=0; x<dst->width; x++)
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{
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x2 = (x+ox) % src->width;
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Image_pixel_copy(src, x, y, dst, x2, y2);
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}
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}
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return FUNC_IS_BETA; /* et elle coredumpe ? */
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}
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/*::------------------------------------------------------------------::*/
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/* OPTIMIZED FOR SPEED */
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int Image_shift_x(Image_Desc *src, Image_Desc *dst, int ox)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, "*** %s : work in progress...\n", __func__);
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fprintf(stderr, "%p -> sX(%d) -> %p\n", src, ox, dst);
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#endif
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return FULL_NUCKED;
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}
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/*::------------------------------------------------------------------::*/
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/* OPTIMIZED FOR SPEED */
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int Image_shift_y(Image_Desc *src, Image_Desc *dst, int oy)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, "*** %s : work in progress...\n", __func__);
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fprintf(stderr, "%p -> sY(%d) -> %p\n", src, oy, dst);
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#endif
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return FULL_NUCKED;
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}
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/*::------------------------------------------------------------------::*/
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/*
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* voir aussi les modules scale.c et warp[0|1|3].c
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*/
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/*::------------------------------------------------------------------::*/
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