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light: move DicePatch to polylib.c

This commit is contained in:
Eric Wasylishen 2016-05-19 15:03:21 -06:00
parent a0f636a69a
commit fff12697e5
3 changed files with 52 additions and 46 deletions
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49
common/polylib.c
View File

@ -418,3 +418,52 @@ CheckWinding(const winding_t * w)
}
}
}
/*
=============
DiceWinding
Chops the winding by a global grid.
Calls save_fn on each subdivided chunk.
Frees w.
From q3rad (DicePatch)
=============
*/
void DiceWinding (winding_t *w, vec_t subdiv, save_winding_fn_t save_fn)
{
winding_t *o1, *o2;
vec3_t mins, maxs;
vec3_t split;
vec_t dist;
int i;
if (!w)
return;
WindingBounds (w, mins, maxs);
for (i=0 ; i<3 ; i++)
if (floor((mins[i]+1)/subdiv) < floor((maxs[i]-1)/subdiv))
break;
if (i == 3)
{
// no splitting needed
save_fn(w);
return;
}
//
// split the winding
//
VectorCopy (vec3_origin, split);
split[i] = 1;
dist = subdiv*(1+floor((mins[i]+1)/subdiv));
ClipWinding (w, split, dist, &o1, &o2);
free(w);
//
// create a new patch
//
DiceWinding(o1, subdiv, save_fn);
DiceWinding(o2, subdiv, save_fn);
}

3
include/common/polylib.h
View File

@ -28,6 +28,9 @@ void CheckWinding(const winding_t * w);
void WindingPlane(const winding_t * w, vec3_t normal, vec_t *dist);
void RemoveColinearPoints(winding_t * w);
typedef void (*save_winding_fn_t)(winding_t *w);
void DiceWinding (winding_t *w, vec_t subdiv, save_winding_fn_t save_fn);
#ifdef __cplusplus
}
#endif

46
light/light.cc
View File

@ -958,52 +958,6 @@ void SavePatch (const bsp2_t *bsp, const bsp2_dface_t *sourceface, winding_t *w)
facenumToPatches[i].push_back(p);
}
/*
=============
DicePatch
Chops the patch by a global grid
From q3rad
=============
*/
void DicePatch (const bsp2_t *bsp, const bsp2_dface_t *sourceface, winding_t *w, vec_t subdiv)
{
winding_t *o1, *o2;
vec3_t mins, maxs;
vec3_t split;
vec_t dist;
int i;
if (!w)
return;
WindingBounds (w, mins, maxs);
for (i=0 ; i<3 ; i++)
if (floor((mins[i]+1)/subdiv) < floor((maxs[i]-1)/subdiv))
break;
if (i == 3)
{
// no splitting needed
SavePatch(bsp, sourceface, w);
return;
}
//
// split the winding
//
VectorCopy (vec3_origin, split);
split[i] = 1;
dist = subdiv*(1+floor((mins[i]+1)/subdiv));
ClipWinding (w, split, dist, &o1, &o2);
free(w);
//
// create a new patch
//
DicePatch(bsp, sourceface, o1, subdiv);
DicePatch(bsp, sourceface, o2, subdiv);
}
static void *
MakeBounceLightsThread (void *arg)
{