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efl/legacy/evas/src/lib/engines/common/evas_gradient_angular.c

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joses's gradient work - gradient look nice. one problem jose.. USE BRACKETS! do NOT depend on order operation precedence. it broke scaling. laos other completely bizarre mmx things were going wrong with mm7 ending up not 0 so i've had to force it to be 0. SVN revision: 18811
2005-12-03 01:27:53 -08:00
#include "evas_common.h"
#include <math.h>
typedef struct _Angular_Data Angular_Data;
struct _Angular_Data
{
int sx, sy, s;
float an, cy;
};
static Angular_Data angular_data = {32, 32, 32, -1.0, 1.0};
static void
angular_setup_geom(RGBA_Gradient *gr, int spread);
static int
angular_has_alpha(RGBA_Gradient *gr, int spread);
static int
angular_get_map_len(RGBA_Gradient *gr, int spread);
static Gfx_Func_Gradient_Span
angular_get_span_func(RGBA_Gradient *gr, int spread, unsigned char aa);
static RGBA_Gradient_Type angular = {"angular", &angular_data, angular_setup_geom, angular_has_alpha, angular_get_map_len, angular_get_span_func};
/** internal functions **/
static void
angular_reflect_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_reflect_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_reflect(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_repeat_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_repeat_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_repeat_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_repeat(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_restrict_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_restrict_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_restrict_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
static void
angular_restrict(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
RGBA_Gradient_Type *
evas_common_gradient_angular_get(void)
{
return &angular;
}
static void
angular_setup_geom(RGBA_Gradient *gr, int spread)
{
int err = 1;
char *s, *p, key[256];
float val, an = -1.0, cy = 1.0;
if (!gr || (gr->type.geometer != &angular)) return;
angular_data.sx = gr->fill.w;
angular_data.sy = gr->fill.h;
angular_data.s = angular_data.sx;
if (angular_data.sy > angular_data.sx)
angular_data.s = angular_data.sy;
angular_data.an = -1.0;
angular_data.cy = 1.0;
if (!gr->type.params || !*(gr->type.params))
return;
s = strdup(gr->type.params);
if (!s) return;
p = s;
while (p = evas_common_gradient_get_key_fval(p, key, &val))
{
if (!strcmp(key, "annulus"))
{
err = 0;
an = val;
}
else if (!strcmp(key, "wrap"))
{
err = 0;
cy = val;
}
else
{
err = 1;
goto done;
}
}
done:
if (!err)
{
if (an < 0.0) an = 0.0;
if (an > 1.0) an = 1.0;
angular_data.an = an;
if (cy < 0.0) cy = 0.0;
if (cy > 1.0) cy = 1.0;
angular_data.cy = cy;
}
free(s);
}
static int
angular_has_alpha(RGBA_Gradient *gr, int spread)
{
if (!gr || (gr->type.geometer != &angular)) return 0;
if (gr->map.has_alpha)
return 1;
if ((int)angular_data.an >= 0)
return 1;
if ((spread == _EVAS_TEXTURE_RESTRICT) && (angular_data.cy < 1.0))
return 1;
return 0;
}
static int
angular_get_map_len(RGBA_Gradient *gr, int spread)
{
int l;
if (!gr || (gr->type.geometer != &angular)) return 0;
l = (2 * M_PI) * angular_data.s * angular_data.cy;
return l;
}
static Gfx_Func_Gradient_Span
angular_get_span_func(RGBA_Gradient *gr, int spread, unsigned char aa)
{
Gfx_Func_Gradient_Span sfunc = NULL;
if (!gr || (gr->type.geometer != &angular)) return sfunc;
switch (spread)
{
case _EVAS_TEXTURE_REFLECT:
{
if (aa)
{
if ((int)angular_data.an >= 0)
sfunc = angular_reflect_aa_annulus;
else
sfunc = angular_reflect;
}
else
{
if ((int)angular_data.an >= 0)
sfunc = angular_reflect_annulus;
else
sfunc = angular_reflect;
}
}
break;
case _EVAS_TEXTURE_REPEAT:
{
if (aa)
{
if ((int)angular_data.an >= 0)
sfunc = angular_repeat_aa_annulus;
else
sfunc = angular_repeat_aa;
}
else
{
if ((int)angular_data.an >= 0)
sfunc = angular_repeat_annulus;
else
sfunc = angular_repeat;
}
}
break;
case _EVAS_TEXTURE_RESTRICT:
{
if (aa)
{
if ((int)angular_data.an >= 0)
sfunc = angular_restrict_aa_annulus;
else
sfunc = angular_restrict_aa;
}
else
{
if ((int)angular_data.an >= 0)
sfunc = angular_restrict_annulus;
else
sfunc = angular_restrict;
}
}
break;
default:
sfunc = angular_reflect;
break;
}
return sfunc;
}
static void
angular_reflect_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
int rr0 = r0 << 16, rr1 = r1 << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ((r >= r0) && (r <= r1))
{
int ll = ss * (M_PI + atan2(yy, xx)), l = (ll >> 16);
if (l >= map_len)
{
int m = (l % (2 * map_len));
l = (l % map_len);
if (m >= map_len)
l = map_len - l - 1;
}
*dst = map[l];
if (r == r0)
{
int a = 1 + ((rr - rr0) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (r == r1)
{
int a = 256 - ((rr - rr1) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_reflect(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int ll = ss * (M_PI + atan2(yy, xx)), l = (ll >> 16);
if (l >= map_len)
{
int m = (l % (2 * map_len));
l = (l % map_len);
if (m >= map_len)
l = map_len - l - 1;
}
*dst = map[l];
dst++; xx += axx; yy += ayx;
}
}
static void
angular_reflect_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ((r >= r0) && (r <= r1))
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
l += (ll - (l << 16)) >> 15;
if (l >= map_len)
{
int m = (l % (2 * map_len));
l = (l % map_len);
if (m >= map_len)
l = map_len - l - 1;
}
*dst = map[l];
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_repeat_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
int rr0 = r0 << 16, rr1 = r1 << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ((r >= r0) && (r <= r1))
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
if (l >= map_len)
l = (l % map_len);
*dst = map[l];
if (r == r0)
{
int a = 1 + ((rr - rr0) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (r == r1)
{
int a = 256 - ((rr - rr1) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (l == (map_len - 1))
{
int a = 1 + (ll >> 8);
*dst += ARGB_JOIN((a * (A_VAL(map) - A_VAL(dst))) >> 8,
(a * (R_VAL(map) - R_VAL(dst))) >> 8,
(a * (G_VAL(map) - G_VAL(dst))) >> 8,
(a * (B_VAL(map) - B_VAL(dst))) >> 8);
}
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_repeat_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
if (l >= map_len)
l = (l % map_len);
*dst = map[l];
if (l == (map_len - 1))
{
int a = 1 + (ll >> 8);
*dst += ARGB_JOIN((a * (A_VAL(map) - A_VAL(dst))) >> 8,
(a * (R_VAL(map) - R_VAL(dst))) >> 8,
(a * (G_VAL(map) - G_VAL(dst))) >> 8,
(a * (B_VAL(map) - B_VAL(dst))) >> 8);
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_repeat_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ((r >= r0) && (r <= r1))
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
l += (ll - (l << 16)) >> 15;
if (l >= map_len)
l = (l % map_len);
*dst = map[l];
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_repeat(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
l += (ll - (l << 16)) >> 15;
if (l >= map_len)
l = (l % map_len);
*dst = map[l];
dst++; xx += axx; yy += ayx;
}
}
static void
angular_restrict_aa_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
int rr0 = r0 << 16, rr1 = r1 << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ( (r >= r0) && (r <= r1) )
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
if (l < map_len)
{
*dst = map[l];
if (r == r0)
{
int a = 1 + ((rr - rr0) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (r == r1)
{
int a = 256 - ((rr - rr1) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (l == (map_len - 1))
{
int a = 256 - ((ll - (l << 16)) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (l == 0)
{
int a = 1 + (ll >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
}
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_restrict_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
*dst = 0;
if (l < map_len)
{
*dst = map[l];
if (l == (map_len - 1))
{
int a = 256 - ((ll - (l << 16)) >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
if (l == 0)
{
int a = 1 + (ll >> 8);
A_VAL(dst) = (A_VAL(dst) * a) >> 8;
}
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_restrict_annulus(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
int r1 = gdata->s, r0 = gdata->an * r1;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int rr = hypot(xx, yy), r = (rr >> 16);
*dst = 0;
if ( (r >= r0) && (r <= r1) )
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
l += (ll - (l << 16)) >> 15;
if (l < map_len)
*dst = map[l];
}
dst++; xx += axx; yy += ayx;
}
}
static void
angular_restrict(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
{
DATA32 *dst_end = dst + dst_len;
Angular_Data *gdata = (Angular_Data *)params_data;
int xx, yy;
int ss = (gdata->s) << 16;
if (gdata->sx != gdata->s)
{
axx = (gdata->s * axx) / gdata->sx;
axy = (gdata->s * axy) / gdata->sx;
}
if (gdata->sy != gdata->s)
{
ayy = (gdata->s * ayy) / gdata->sy;
ayx = (gdata->s * ayx) / gdata->sy;
}
xx = (axx * x) + (axy * y);
yy = (ayx * x) + (ayy * y);
while (dst < dst_end)
{
int ll = ss * (M_PI + atan2(yy, xx)), l = ll >> 16;
*dst = 0;
l += (ll - (l << 16)) >> 15;
if (l < map_len)
*dst = map[l];
dst++; xx += axx; yy += ayx;
}
}