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polymost.c: rewrite dorotatesprite's widescreen bit handling (256,512,1024).

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Instead of setting and resetting the [xy]dim globals, use them as locals
in a block (shadowing the globals).  Also, do some common subexpression
elimination for clarity.

git-svn-id: https://svn.eduke32.com/eduke32@2908 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-08-16 21:48:41 +00:00
parent 21ee6fadc0
commit 8ac85eef54
1 changed files with 29 additions and 10 deletions
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39
polymer/eduke32/build/src/polymost.c
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@ -5357,7 +5357,7 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
double ogrhalfxdown10, ogrhalfxdown10x;
double d, cosang, sinang, cosang2, sinang2, px[8], py[8], px2[8], py2[8];
float m[4][4];
int32_t oxdim = xdim, oydim = ydim;
#if defined(USE_OPENGL) && defined(POLYMER)
int32_t olddetailmapping = r_detailmapping, oldglowmapping = r_glowmapping;
#endif
@ -5621,9 +5621,17 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
if (dastat&2) //Auto window size scaling
{
int32_t x;
// nasty hacks go here
if (!(dastat&8))
{
const int32_t cxs = cx1+cx2+2;
int32_t sthelse;
const int32_t oxdim = xdim;
int32_t xdim = oxdim; // SHADOWS global
x = xdimenscale; //= scale(xdimen,yxaspect,320);
if (!(dastat & 1024) && ((double)ydim/(double)xdim) <= .75f)
@ -5632,12 +5640,21 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
setaspect(65536L,(int32_t)divscale16(ydim*320L,xdim*200L));
}
if (dastat & 512)
sx = ((cx1+cx2+2+scale((oxdim-xdim), cx1+cx2+2, oxdim))<<15)+scale(sx-(320<<15),scale(xdimen, xdim, oxdim),320);
else if (dastat & 256)
sx = ((cx1+cx2+2-scale((oxdim-xdim), cx1+cx2+2, oxdim))<<15)+scale(sx-(320<<15),scale(xdimen, xdim, oxdim),320);
else
sx = ((cx1+cx2+2)<<15)+scale(sx-(320<<15),scale(xdimen, xdim, oxdim),320);
sthelse = scale(sx-(320<<15), scale(xdimen, xdim, oxdim), 320);
{
int32_t xbord = 0;
if (dastat & (256|512))
{
xbord = scale(oxdim-xdim, cxs, oxdim);
if ((dastat & 512)==0)
xbord = -xbord;
}
sx = ((cxs+xbord)<<15) + sthelse;
}
sy = ((cy1+cy2+2)<<15)+mulscale16(sy-(200<<15),x);
}
@ -5646,6 +5663,9 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
//If not clipping to startmosts, & auto-scaling on, as a
//hard-coded bonus, scale to full screen instead
const int32_t oxdim = xdim;
int32_t xdim = oxdim; // SHADOWS global
if (!(dastat & 1024) && ((double)ydim/(double)xdim) <= .75f)
{
xdim = (int32_t)((double)ydim * 1.33333333333333334f);
@ -5661,11 +5681,12 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
else if ((dastat & 256) == 0)
sx += (oxdim-xdim)<<15;
}
z = mulscale16(z,x);
}
else if (!(dastat & 1024) && ((double)ydim/(double)xdim) <= .75f)
{
ydim = (int32_t)((double)xdim * 0.75f);
const int32_t ydim = (int32_t)((double)xdim * 0.75f); // SHADOWS global
setaspect(65536L,(int32_t)divscale16(ydim*320L,xdim*200L));
}
@ -5778,8 +5799,6 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
gshang = ogshang;
gctang = ogctang;
gstang = ogstang;
xdim = oxdim;
ydim = oydim;
setaspect_new();
}