#include <Performer/pr/pfGeoSet.h>
#include <Performer/pf/pfNode.h>

/* remember to do
	node->setTravMask(PFTRAV_ISECT, 0xffffffff,
			PFTRAV_SELF|PFTRAV_DESCEND|PFTRAV_IS_CACHE, PF_OR);
 to enable intersection caching */


int isectTest(pfNode *node,pfVec3 pos,pfVec3 dir,pfVec3 *retPoint,pfVec3 *retNorm)
{
 pfSegSet segset;
 pfHit **hits[32];
 segset.activeMask = 1;
 segset.isectMask = 0xffffffff;
 segset.discFunc = NULL;
 segset.bound = NULL;
/* replace PFTRAV_IS_PRIM by PFTRAV_IS_GSET to only test GeoSet bounding boxes;
   or, use PFTRAV_IS_GEODE to only test Geode bounding spheres */
 segset.mode = PFTRAV_IS_PRIM | PFTRAV_IS_NORM | PFTRAV_IS_CULL_BACK;
 segset.segs[0].pos = pos;
 segset.segs[0].dir = dir;
 segset.segs[0].length = 1000.0f;
 if (node->isect(&segset, hits))
	{
	pfVec3 pnt, norm;
	pfMatrix xmat;
	(*hits[0])->query(PFQHIT_POINT, pnt.vec);
	(*hits[0])->query(PFQHIT_XFORM, (float*)xmat.mat);
	pnt.xformPt(pnt, xmat);
	*retPoint = pnt;
	(*hits[0])->query(PFQHIT_NORM, norm.vec);
	norm.xformVec(norm, xmat);
	*retNorm = norm;
	return 1;
	}
 return 0;
}

int isectTest2(pfNode *node,pfVec3 rayPoint0,pfVec3 rayPoint1,pfVec3 *retPoint)
{
 pfSegSet segset;
 pfHit **hits[32];
 segset.activeMask = 1;
 segset.isectMask = 0xffffffff;
 segset.discFunc = NULL;
 segset.bound = NULL;
 segset.mode = PFTRAV_IS_PRIM;
 segset.segs[0].makePts(rayPoint0,rayPoint1);
 if (node->isect(&segset, hits))
	{
	pfVec3 pnt;
	pfMatrix xmat;
	(*hits[0])->query(PFQHIT_POINT, pnt.vec);
	(*hits[0])->query(PFQHIT_XFORM, (float*)xmat.mat);
	pnt.xformPt(pnt, xmat);
	*retPoint = pnt;
	return 1;
	}
 return 0;
}