241 lines
5.2 KiB
C
241 lines
5.2 KiB
C
|
/*
|
|||
|
primitives graphiques premier module (back in 1999)
|
|||
|
---------------------------------------------------
|
|||
|
*/
|
|||
|
|
|||
|
#include <stdio.h>
|
|||
|
#include <stdlib.h>
|
|||
|
|
|||
|
#include "../tthimage.h"
|
|||
|
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
#ifndef min
|
|||
|
#define min(a,b) ((a)<(b)?(a):(b))
|
|||
|
#define max(a,b) ((a)>(b)?(a):(b))
|
|||
|
#endif
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
static int
|
|||
|
iSign(int a)
|
|||
|
{
|
|||
|
if (a<0) return -1;
|
|||
|
if (a>0) return 1;
|
|||
|
return 0;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
static void symmetry(int x, int y, int xc, int yc, RGBA *g, Image_Desc *i)
|
|||
|
{
|
|||
|
int x_start, x_end;
|
|||
|
int y_start, y_end;
|
|||
|
|
|||
|
x_start = x; y_start = y;
|
|||
|
x_end = x + 1; y_end = y + 1;
|
|||
|
|
|||
|
Image_plotRGB(i, x+xc, y+yc, 100, 100, 100);
|
|||
|
|
|||
|
fprintf(stderr, "sym %d %d\n", x, y);
|
|||
|
}
|
|||
|
|
|||
|
/* le param<61>tre 'wrap' ne sert <20> rien */
|
|||
|
int
|
|||
|
Image_draw_circle(Image_Desc *i, int xc, int yc, int rayon, RGBA *q, int wrap)
|
|||
|
{
|
|||
|
int x, y, d;
|
|||
|
|
|||
|
#if DEBUG_LEVEL
|
|||
|
fprintf(stderr, "%s : centre %d %d, rayon %d\n", __func__, xc, yc, rayon);
|
|||
|
#endif
|
|||
|
|
|||
|
y = rayon;
|
|||
|
d = 3 - 2 * rayon;
|
|||
|
|
|||
|
for ( x=0; x<y; )
|
|||
|
{
|
|||
|
symmetry(x, y, xc, yc, q, i);
|
|||
|
|
|||
|
if (d<0)
|
|||
|
{
|
|||
|
d += 4 * x + 6;
|
|||
|
}
|
|||
|
else
|
|||
|
{
|
|||
|
d += 4 * (y - x) * 10;
|
|||
|
--y;
|
|||
|
}
|
|||
|
++x;
|
|||
|
}
|
|||
|
|
|||
|
return FUNC_NOT_FINISH;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
/*
|
|||
|
* l'appel a la fonction isign devrait disparaitre pour optimiser
|
|||
|
* la vitesse du bouzin.
|
|||
|
*/
|
|||
|
int
|
|||
|
Image_draw_line(Image_Desc *i, int x1, int y1, int x2, int y2, RGBA *q)
|
|||
|
{
|
|||
|
int dx, dy, ix, iy, inc;
|
|||
|
int foo, plotx, ploty, x, y;
|
|||
|
int plot;
|
|||
|
|
|||
|
#if DEBUG_LEVEL > 1
|
|||
|
printf("%s %4d %4d -----> %4d %4d\n", __func__, x1, y1, x2, y2);
|
|||
|
#endif
|
|||
|
|
|||
|
dx = x2 - x1; dy = y2 - y1;
|
|||
|
ix = abs(dx); iy = abs(dy);
|
|||
|
inc = ix<iy ? iy : ix;
|
|||
|
|
|||
|
#if DEBUG_LEVEL > 1
|
|||
|
printf("d %4d %4d i %4d %4d ^ %4d\n", dx, dy, ix, iy, inc);
|
|||
|
#endif
|
|||
|
|
|||
|
plotx = x1;
|
|||
|
ploty = y1;
|
|||
|
x = y = 0;
|
|||
|
|
|||
|
for (foo=0; foo<=inc; ++foo)
|
|||
|
{
|
|||
|
x += ix;
|
|||
|
y += iy;
|
|||
|
plot = 0;
|
|||
|
if (x > inc)
|
|||
|
{
|
|||
|
plot = 42;
|
|||
|
x -= inc;
|
|||
|
plotx += iSign(dx);
|
|||
|
}
|
|||
|
if (y > inc)
|
|||
|
{
|
|||
|
plot = 42;
|
|||
|
y -= inc;
|
|||
|
ploty += iSign(dy);
|
|||
|
}
|
|||
|
if (plot)
|
|||
|
{
|
|||
|
/* printf("%5d %5d %5d\n", foo, plotx, ploty ); */
|
|||
|
Image_plotRGB(i, plotx, ploty, q->r, q->g, q->b);
|
|||
|
}
|
|||
|
|
|||
|
}
|
|||
|
return 0;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
/*
|
|||
|
* XXX si je veux remplacer 'plotRGB' par un acc<EFBFBD>s direct
|
|||
|
* XXX dans les buffers, il faut soigner les controles
|
|||
|
*/
|
|||
|
int
|
|||
|
Image_paint_rect(Image_Desc *img, Image_Rect *rect, int r, int g, int b)
|
|||
|
{
|
|||
|
int xd, yd, xf, yf, x, y;
|
|||
|
|
|||
|
#if DEBUG_LEVEL > 2
|
|||
|
fprintf(stderr, "Paint Rect : image %d x %d\n", img->width, img->height);
|
|||
|
Image_dump_rect(rect, "in 'paint a rect'", 0);
|
|||
|
#endif
|
|||
|
|
|||
|
xd = max(0, rect->x);
|
|||
|
yd = max(0, rect->y);
|
|||
|
xf = min((img->width), (rect->x+rect->w));
|
|||
|
yf = min((img->height), (rect->y+rect->h));
|
|||
|
/*
|
|||
|
* 24 Juin 2002: est-ce que le code ci-dessus a <EFBFBD>t<EFBFBD> s<EFBFBD>rieusement valid<EFBFBD> ?
|
|||
|
* 24 Avril 2008: NON !
|
|||
|
* 26 janvier 2014 : toujours non...
|
|||
|
*/
|
|||
|
|
|||
|
#if DEBUG_LEVEL > 2
|
|||
|
fprintf(stderr, "Paint Rect: %4d < X < %4d %4d < Y < %4d\n",
|
|||
|
xd, xf, yd, yf);
|
|||
|
#endif
|
|||
|
|
|||
|
for (x=xd; x<xf; x++)
|
|||
|
{
|
|||
|
for (y=yd; y<yf; y++)
|
|||
|
{
|
|||
|
/* Image_plotRGB(img, x, y, r, g, b); */
|
|||
|
(img->Rpix[y])[x] = r;
|
|||
|
(img->Gpix[y])[x] = g;
|
|||
|
(img->Bpix[y])[x] = b;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return 0;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
/*
|
|||
|
* 27 Juin 2001: there was an off-by-one error in this func...
|
|||
|
* See also 'drawpatt.c' for others things.
|
|||
|
*/
|
|||
|
int
|
|||
|
Image_draw_rect(Image_Desc *img, Image_Rect *rect, int r, int g, int b)
|
|||
|
{
|
|||
|
int foo;
|
|||
|
int xd, yd, xf, yf;
|
|||
|
|
|||
|
xd = max(0, rect->x);
|
|||
|
yd = max(0, rect->y);
|
|||
|
xf = min((img->width-1), ((rect->x+rect->w)));
|
|||
|
yf = min((img->height-1), ((rect->y+rect->h)));
|
|||
|
|
|||
|
#if DEBUG_LEVEL > 1
|
|||
|
Image_dump_rect(rect, "draw a rect", 0);
|
|||
|
fprintf(stderr, "Draw a Rect: xd:%4d yd:%4d xf:%4d yf:%4d\n",
|
|||
|
xd, yd, xf, yf);
|
|||
|
#endif
|
|||
|
|
|||
|
for (foo=xd; foo<xf; foo++)
|
|||
|
{
|
|||
|
/* if ( (rect->y >= 0) && (rect->y < img->height) ) */
|
|||
|
Image_plotRGB(img, foo, rect->y, r, g, b);
|
|||
|
/* if ( (rect->y+rect->h >= 0) && (rect->y+rect->h < img->height) ) */
|
|||
|
Image_plotRGB(img, foo, rect->y+rect->h-1, r, g, b);
|
|||
|
}
|
|||
|
|
|||
|
for (foo=yd; foo<yf; foo++)
|
|||
|
{
|
|||
|
/* if ( (rect->x >= 0) && (rect->x < img->width) ) */
|
|||
|
Image_plotRGB(img, rect->x, foo, r, g, b);
|
|||
|
/* if ( (rect->x+rect->w >= 0) && (rect->x+rect->w < img->width) ) */
|
|||
|
Image_plotRGB(img, rect->x+rect->w-1, foo, r, g, b);
|
|||
|
}
|
|||
|
|
|||
|
return 0;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
/* new 10 octobre 2008 - zone de Monredon (Betatech) */
|
|||
|
int
|
|||
|
Image_noise_rect(Image_Desc *img, Image_Rect *rect, int r, int g, int b)
|
|||
|
{
|
|||
|
int xd, yd, xf, yf, x, y;
|
|||
|
|
|||
|
fprintf(stderr, "%s: i=%p r=%p %d %d %d\n", __func__, img, rect, r, g, b);
|
|||
|
|
|||
|
xd = max(0, rect->x);
|
|||
|
yd = max(0, rect->y);
|
|||
|
xf = min((img->width-1), (rect->x+rect->w));
|
|||
|
yf = min((img->height-1), (rect->y+rect->h));
|
|||
|
|
|||
|
#if DEBUG_LEVEL
|
|||
|
fprintf(stderr, "%s: %d %d %d %d\n", __func__, xd, yd, xf, yf);
|
|||
|
#endif
|
|||
|
|
|||
|
for (x=xd; x<xf; x++)
|
|||
|
{
|
|||
|
for (y=yd; y<yf; y++)
|
|||
|
{
|
|||
|
(img->Rpix[y])[x] = rand() % r;
|
|||
|
(img->Gpix[y])[x] = rand() % g;
|
|||
|
(img->Bpix[y])[x] = rand() % b;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return FUNC_IS_BETA;
|
|||
|
}
|
|||
|
/*::------------------------------------------------------------------::*/
|
|||
|
/*
|
|||
|
* kikoo lol a tous les goret-codeurs, et en particulier Mr Spleyt.
|
|||
|
*/
|
|||
|
|