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quick maths

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This commit is contained in:
Jaime Passos 2019-09-28 13:40:40 -03:00
parent 6574e1a7d3
commit 8aefc03409
1 changed files with 10 additions and 18 deletions
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28
src/r_things.c
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@ -267,33 +267,25 @@ void R_CacheRotSprite(spriteframe_t *sprframe, INT32 rot, UINT8 flip)
// Don't cache angle = 0, that would be stoopid
for (angle = 1; angle < ROTANGLES; angle++)
{
INT32 minx = 32767, maxx = -32767;
INT32 miny = 32767, maxy = -32767;
INT32 newwidth, newheight;
ca = cosang2rad[angle];
sa = sinang2rad[angle];
// Find the dimensions of the rotated patch.
// This is BROKEN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
for (sy = 0; sy < height; sy++)
{
for (sx = 0; sx < width; sx++)
{
dx = FixedMul((sx-ox) << FRACBITS, ca) + FixedMul((sy-oy) << FRACBITS, sa) + (ox << FRACBITS);
dy = -FixedMul((sx-oy) << FRACBITS, sa) + FixedMul((sy-oy) << FRACBITS, ca) + (oy << FRACBITS);
dx >>= FRACBITS;
dy >>= FRACBITS;
if (dx < minx) minx = dx;
if (dx > maxx) maxx = dx;
if (dy < miny) miny = dy;
if (dy > maxy) maxy = dy;
}
INT32 w1 = abs(FixedMul(width << FRACBITS, ca) - FixedMul(height << FRACBITS, sa));
INT32 w2 = abs(FixedMul(-(width << FRACBITS), ca) - FixedMul(height << FRACBITS, sa));
INT32 h1 = abs(FixedMul(width << FRACBITS, sa) + FixedMul(height << FRACBITS, ca));
INT32 h2 = abs(FixedMul(-(width << FRACBITS), sa) + FixedMul(height << FRACBITS, ca));
w1 = FixedInt(FixedCeil(w1 + (FRACUNIT/2)));
w2 = FixedInt(FixedCeil(w2 + (FRACUNIT/2)));
h1 = FixedInt(FixedCeil(h1 + (FRACUNIT/2)));
h2 = FixedInt(FixedCeil(h2 + (FRACUNIT/2)));
newwidth = max(width, max(w1, w2));
newheight = max(height, max(h1, h2));
}
newwidth = (maxx - minx) * 1.5f;
newheight = (maxy - miny) * 1.5f;
nox = (newwidth / 2);
noy = (newheight / 2);