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Much faster clipped ellipse filling. 

SVN revision: 3356
This commit is contained in:
Tom Gilbert 2000-09-08 15:05:38 +00:00
parent cd464e9838
commit 5de8b0f072
1 changed files with 24 additions and 20 deletions
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44
src/rgbadraw.c
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@ -1835,23 +1835,25 @@ __imlib_fill_ellipse_clipped(ImlibImage * im, int xc, int yc, int aa, int bb,
int a2 = aa * aa;
int b2 = bb * bb;
int i;
int y1, y2, x1, x2;
int x, y, dec;
for (x = 0, y = bb, dec = 2 * b2 + a2 * (1 - 2 * bb); b2 * x <= a2 * y;
x++)
{
if ((i >= clip_ymin) && (i <= clip_ymax))
y1 = yc - y;
y2 = yc + y;
if (y1 < clip_ymin)
y1 = clip_ymin;
if (y2 > clip_ymax)
y2 = clip_ymax;
for (i = y1; i <= y2; i++)
{
for (i = yc - y; i <= yc + y; i++)
{
__imlib_draw_set_point_clipped(im, xc - x, i, clip_xmin,
clip_xmax, clip_ymin, clip_ymax, r,
g, b, a, op);
__imlib_draw_set_point_clipped(im, xc + x, i, clip_xmin,
clip_xmax, clip_ymin, clip_ymax, r,
g, b, a, op);
}
if ((xc - x) >= clip_xmin && (xc - x) <= clip_xmax)
__imlib_draw_set_point(im, xc - x, i, r, g, b, a, op);
if ((xc + x) >= clip_xmin && (xc + x) <= clip_xmax)
__imlib_draw_set_point(im, xc + x, i, r, g, b, a, op);
}
if (dec >= 0)
@ -1862,17 +1864,19 @@ __imlib_fill_ellipse_clipped(ImlibImage * im, int xc, int yc, int aa, int bb,
for (x = aa, y = 0, dec = 2 * a2 + b2 * (1 - 2 * aa); a2 * y <= b2 * x;
y++)
{
if ((i >= clip_ymin) && (i <= clip_ymax))
y1 = yc - y;
y2 = yc + y;
if (y1 < clip_ymin)
y1 = clip_ymin;
if (y2 > clip_ymax)
y2 = clip_ymax;
for (i = y1; i <= y2; i++)
{
for (i = yc - y; i <= yc + y; i++)
{
__imlib_draw_set_point_clipped(im, xc + x, i, clip_xmin,
clip_xmax, clip_ymin, clip_ymax, r,
g, b, a, op);
__imlib_draw_set_point_clipped(im, xc - x, i, clip_xmin,
clip_xmax, clip_ymin, clip_ymax, r,
g, b, a, op);
}
if ((xc + x) >= clip_xmin && (xc + x) <= clip_xmax)
__imlib_draw_set_point(im, xc + x, i, r, g, b, a, op);
if ((xc - x) >= clip_xmin && (xc - x) <= clip_xmax)
__imlib_draw_set_point(im, xc - x, i, r, g, b, a, op);
}
if (dec >= 0)