67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/*
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turtle.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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int Image_turtle_infos(Image_Desc *img, int flags)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, "Image turtle infos: flags = %04x\n", flags);
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#endif
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if ( flags & 1 ) {
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Image_dump_descriptor(img, "turtle infos");
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}
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return FUNC_IS_ALPHA;
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}
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/*::------------------------------------------------------------------::*/
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/*
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* changer la couleur de l'encre de la tortue.
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*
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* Q: pourquoi le canal alpha n'est pas pris en compte ?
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* A: parce que :)
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*/
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int Image_turtle_setcolors(Image_Desc *img, int r, int g, int b)
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{
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img->rt = r; img->gt = g; img->bt = b;
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img->at = 0; /* ? bonne valeur ? */
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return FUNC_IS_ALPHA;
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}
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/*::------------------------------------------------------------------::*/
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int Image_turtle_move(Image_Desc *img, double xt, double yt)
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{
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fprintf(stderr, ">>> %s ( %p %f %f )\n", __func__, img, xt, yt);
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img->xt = xt;
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img->yt = yt;
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return FUNC_NOT_FINISH;
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}
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/*::------------------------------------------------------------------::*/
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int Image_turtle_draw(Image_Desc *img, double xt, double yt)
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{
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int x1, y1, x2, y2;
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RGBA color = { 200, 200, 200, 0, 0, 0 };
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fprintf(stderr, ">>> %s ( %p %f %f )\n", __func__, img, xt, yt);
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x1 = (int)img->xt, y1 = (int)img->yt;
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x2 = (int)xt , y2 = (int)yt;
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Image_draw_line(img, x1, y1, x2, y2, &color);
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return FUNC_NOT_FINISH;
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}
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/*::------------------------------------------------------------------::*/
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