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common: polylib: add WindingBounds from q2 tools. Add missing consts

This commit is contained in:
Eric Wasylishen 2016-04-19 01:39:37 -06:00
parent 8fd3f41b42
commit bc0e76f959
2 changed files with 52 additions and 16 deletions
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45
common/polylib.c
View File

@ -68,7 +68,7 @@ RemoveColinearPoints(winding_t * w)
* ============
*/
void
WindingPlane(winding_t * w, vec3_t normal, vec_t *dist)
WindingPlane(const winding_t * w, vec3_t normal, vec_t *dist)
{
vec3_t v1, v2;
@ -85,7 +85,7 @@ WindingPlane(winding_t * w, vec3_t normal, vec_t *dist)
* =============
*/
vec_t
WindingArea(winding_t * w)
WindingArea(const winding_t * w)
{
int i;
vec3_t d1, d2, cross;
@ -107,7 +107,7 @@ WindingArea(winding_t * w)
* =============
*/
void
WindingCenter(winding_t * w, vec3_t center)
WindingCenter(const winding_t * w, vec3_t center)
{
int i;
vec3_t d1, d2, cross;
@ -121,13 +121,40 @@ WindingCenter(winding_t * w, vec3_t center)
VectorScale(center, scale, center);
}
/*
* =============
* WindingBounds
* =============
*/
void
WindingBounds (const winding_t *w, vec3_t mins, vec3_t maxs)
{
vec_t v;
int i,j;
mins[0] = mins[1] = mins[2] = 99999;
maxs[0] = maxs[1] = maxs[2] = -99999;
for (i=0 ; i<w->numpoints ; i++)
{
for (j=0 ; j<3 ; j++)
{
v = w->p[i][j];
if (v < mins[j])
mins[j] = v;
if (v > maxs[j])
maxs[j] = v;
}
}
}
/*
* =================
* BaseWindingForPlane
* =================
*/
winding_t *
BaseWindingForPlane(vec3_t normal, float dist)
BaseWindingForPlane(const vec3_t normal, float dist)
{
int i, x;
vec_t max, v;
@ -195,7 +222,7 @@ BaseWindingForPlane(vec3_t normal, float dist)
* ==================
*/
winding_t *
CopyWinding(winding_t * w)
CopyWinding(const winding_t * w)
{
int size;
winding_t *c;
@ -213,7 +240,7 @@ CopyWinding(winding_t * w)
* =============
*/
void
ClipWinding(winding_t * in, vec3_t normal, vec_t dist,
ClipWinding(const winding_t * in, vec3_t normal, vec_t dist,
winding_t ** front, winding_t ** back)
{
vec_t dists[MAX_POINTS_ON_WINDING + 4];
@ -221,7 +248,7 @@ ClipWinding(winding_t * in, vec3_t normal, vec_t dist,
int counts[3];
vec_t dot;
int i, j;
vec_t *p1, *p2;
const vec_t *p1, *p2;
vec3_t mid;
winding_t *f, *b;
int maxpts;
@ -337,10 +364,10 @@ ChopWinding(winding_t * in, vec3_t normal, vec_t dist)
* =================
*/
void
CheckWinding(winding_t * w)
CheckWinding(const winding_t * w)
{
int i, j;
vec_t *p1, *p2;
const vec_t *p1, *p2;
vec_t d, edgedist;
vec3_t dir, edgenormal, facenormal;
vec_t area;

23
include/common/polylib.h
View File

@ -3,6 +3,10 @@
#ifndef __COMMON_POLYLIB_H__
#define __COMMON_POLYLIB_H__
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
int numpoints;
vec3_t p[4]; /* variable sized */
@ -12,15 +16,20 @@ typedef struct {
#define ON_EPSILON 0.1
winding_t *AllocWinding(int points);
vec_t WindingArea(winding_t * w);
void WindingCenter(winding_t * w, vec3_t center);
void ClipWinding(winding_t * in, vec3_t normal, vec_t dist,
vec_t WindingArea(const winding_t * w);
void WindingCenter(const winding_t * w, vec3_t center);
void WindingBounds (const winding_t *w, vec3_t mins, vec3_t maxs);
void ClipWinding(const winding_t * in, vec3_t normal, vec_t dist,
winding_t ** front, winding_t ** back);
winding_t *ChopWinding(winding_t * in, vec3_t normal, vec_t dist);
winding_t *CopyWinding(winding_t * w);
winding_t *BaseWindingForPlane(vec3_t normal, float dist);
void CheckWinding(winding_t * w);
void WindingPlane(winding_t * w, vec3_t normal, vec_t *dist);
winding_t *CopyWinding(const winding_t * w);
winding_t *BaseWindingForPlane(const vec3_t normal, float dist);
void CheckWinding(const winding_t * w);
void WindingPlane(const winding_t * w, vec3_t normal, vec_t *dist);
void RemoveColinearPoints(winding_t * w);
#ifdef __cplusplus
}
#endif
#endif /* __COMMON_POLYLIB_H__ */