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Fixed angle bug in preview (which also fixes dirty pixels).

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Not alpha-blending until doing a full draw.
This commit is contained in:
William Kendrick 2009-04-29 04:45:42 +00:00
parent 2ef171269a
commit 0307da004c
1 changed files with 10 additions and 22 deletions
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32
magic/src/realrainbow.c
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@ -6,12 +6,11 @@
by Bill Kendrick <bill@newbreedsoftware.com>
Math assistence by Jeff Newmiller <jdnewmil@dcn.davis.ca.us>
2009.04.02 - 2009.04.05
2009.04.02 - 2009.04.28
FIXME:
* Needs icon.
* Needs sound effect.
* Rect update needs fixing (leaving dirt).
* Color/alpha art needs improvement.
* Pixel gaps appear in lines sometimes (esp. larger rainbows).
*/
@ -284,36 +283,25 @@ void realrainbow_arc(magic_api * api, SDL_Surface * canvas, SDL_Surface * last,
nx = (rr * cos(a * M_PI / 180.0)) + xc;
ny = (rr * sin(a * M_PI / 180.0)) + yc;
/* if (fulldraw) */
{
colorindex = realrainbow_colors->h - 1 - (((rr - r + (thick / 2)) * realrainbow_colors->h) / thick);
colorindex = realrainbow_colors->h - 1 - (((rr - r + (thick / 2)) * realrainbow_colors->h) / thick);
SDL_GetRGBA(api->getpixel(realrainbow_colors, 0, colorindex),
realrainbow_colors->format, &realrainbow_blendr, &realrainbow_blendg, &realrainbow_blendb, &realrainbow_blenda);
SDL_GetRGBA(api->getpixel(realrainbow_colors, 0, colorindex),
realrainbow_colors->format, &realrainbow_blendr, &realrainbow_blendg, &realrainbow_blendb, &realrainbow_blenda);
api->line((void *) api, 0, canvas, last, ox, oy, nx, ny, 1, realrainbow_linecb);
}
/*
else
{
api->putpixel(canvas, ox, oy,
SDL_MapRGB(canvas->format, rand() % 256, rand() % 256, rand() % 256));
}
*/
if (!fulldraw)
realrainbow_blenda = 255;
api->line((void *) api, 0, canvas, last, ox, oy, nx, ny, 1, realrainbow_linecb);
}
oa = a;
if (step > 0 && a + step > theta)
if ((step > 0 && a + step > theta) ||
(step < 0 && a + step < theta))
{
done++;
a = theta - step;
}
else if (step < 0 && a - step < theta)
{
done++;
a = theta + step;
}
}
update_rect->y = yc - r - thick - 2;