113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
|
|
warp1.c
|
|
_______________
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include "../tthimage.h"
|
|
|
|
/*::------------------------------------------------------------------::*/
|
|
/*
|
|
* Rotation d'image. le parametre 'angle' est en degres.
|
|
*/
|
|
int
|
|
Image_center_rotate(Image_Desc *src, Image_Desc *dst, double angle)
|
|
{
|
|
int xs, ys, xd, yd;
|
|
double arad, fxs, fys, fxd, fyd;
|
|
double sincalc, coscalc;
|
|
int mx, my;
|
|
int r, g, b;
|
|
|
|
#if DEBUG_LEVEL > 1
|
|
fprintf(stderr, "%s : work in progress...\n", __func__);
|
|
#endif
|
|
|
|
arad = angle/180*M_PI;
|
|
mx = dst->width / 2;
|
|
my = dst->height / 2;
|
|
sincalc = sin(arad);
|
|
coscalc = cos(arad);
|
|
|
|
for (xd=0; xd<dst->width; xd++) {
|
|
fxd = (double)(xd-mx);
|
|
for (yd=0; yd<dst->height; yd++) {
|
|
fyd = (double)(yd-my);
|
|
fxs = fxd * coscalc - fyd * sincalc;
|
|
fys = fxd * sincalc + fyd * coscalc;
|
|
|
|
xs = (int)fxs + mx;
|
|
ys = (int)fys + my;
|
|
|
|
if (xs>=0 && xs<src->width && ys>=0 && ys<src->height) {
|
|
/* Image_getRGB(src, xs, ys, &r, &g, &b); */
|
|
r = (src->Rpix[ys])[xs];
|
|
g = (src->Gpix[ys])[xs];
|
|
b = (src->Bpix[ys])[xs];
|
|
}
|
|
else
|
|
{ r = g = b = 127; }
|
|
|
|
/* Image_plotRGB(dst, xd, yd, r, g, b); */
|
|
(dst->Rpix[yd])[xd] = r;
|
|
(dst->Gpix[yd])[xd] = g;
|
|
(dst->Bpix[yd])[xd] = b;
|
|
}
|
|
}
|
|
|
|
return FUNC_IS_BETA;
|
|
}
|
|
/*::------------------------------------------------------------------::*/
|
|
/*
|
|
* La meme chose, en gros...
|
|
* Sauf qu'on pourrait theoriquement choisir la position du
|
|
* point de rotation.
|
|
*
|
|
* reste plus qu'à coder...
|
|
*/
|
|
int
|
|
Image_center_rotate_xy(Image_Desc *src, Image_Desc *dst, double angle,
|
|
double x, double y)
|
|
{
|
|
int foo, xd, yd;
|
|
double arad, fxs, fys, fxd, fyd;
|
|
double sincalc, coscalc;
|
|
int mx, my;
|
|
|
|
#if DEBUG_LEVEL
|
|
fprintf(stderr, "Center Rotate XY: work in progress...\n");
|
|
#endif
|
|
|
|
fprintf(stderr, "%s on %p at %g,%g\n", __func__, src, x, y);
|
|
|
|
arad = angle/180*M_PI;
|
|
mx = dst->width / 2;
|
|
my = dst->height / 2;
|
|
sincalc = sin(arad);
|
|
coscalc = cos(arad);
|
|
|
|
fxs = fys = 0.0; /* ? hein ? */
|
|
foo = 0;
|
|
|
|
for (xd=0; xd<dst->width; xd++) {
|
|
fxd = (double)(xd-mx);
|
|
for (yd=0; yd<dst->height; yd++) {
|
|
fyd = (double)(yd-my);
|
|
|
|
|
|
}
|
|
}
|
|
|
|
/* MAIS C'EST PAS ENCORE FINI CE TRUC ? */
|
|
/* 4 mai 2007: ben non, ya rien :) */
|
|
/* 5 juillet 2022 : toujours pas fait ??? */
|
|
|
|
return FULL_NUCKED;
|
|
}
|
|
/*::------------------------------------------------------------------::*/
|
|
/*
|
|
* voir aussi les modules scale.c et warp0.c
|
|
*/
|
|
/*::------------------------------------------------------------------::*/
|