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OPC_LSSTriOverlap.h
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// Following code from Magic-Software (http://www.magic-software.com/)
// A bit modified for Opcode
static const float gs_fTolerance = 1e-05f;
static float OPC_PointTriangleSqrDist(const IceMaths::Point& point, const IceMaths::Point& p0, const IceMaths::Point& p1, const IceMaths::Point& p2)
{
// Hook
IceMaths::Point TriEdge0 = p1 - p0;
IceMaths::Point TriEdge1 = p2 - p0;
IceMaths::Point kDiff = p0 - point;
float fA00 = TriEdge0.SquareMagnitude();
float fA01 = TriEdge0 | TriEdge1;
float fA11 = TriEdge1.SquareMagnitude();
float fB0 = kDiff | TriEdge0;
float fB1 = kDiff | TriEdge1;
float fC = kDiff.SquareMagnitude();
float fDet = fabsf(fA00*fA11 - fA01*fA01);
float fS = fA01*fB1-fA11*fB0;
float fT = fA01*fB0-fA00*fB1;
float fSqrDist;
if(fS + fT <= fDet)
{
if(fS < 0.0f)
{
if(fT < 0.0f) // region 4
{
if(fB0 < 0.0f)
{
if(-fB0 >= fA00) fSqrDist = fA00+2.0f*fB0+fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
else
{
if(fB1 >= 0.0f) fSqrDist = fC;
else if(-fB1 >= fA11) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
}
else // region 3
{
if(fB1 >= 0.0f) fSqrDist = fC;
else if(-fB1 >= fA11) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
}
else if(fT < 0.0f) // region 5
{
if(fB0 >= 0.0f) fSqrDist = fC;
else if(-fB0 >= fA00) fSqrDist = fA00+2.0f*fB0+fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
else // region 0
{
// minimum at interior point
if(fDet==0.0f)
{
fSqrDist = MAX_FLOAT;
}
else
{
float fInvDet = 1.0f/fDet;
fS *= fInvDet;
fT *= fInvDet;
fSqrDist = fS*(fA00*fS+fA01*fT+2.0f*fB0) + fT*(fA01*fS+fA11*fT+2.0f*fB1)+fC;
}
}
}
else
{
float fTmp0, fTmp1, fNumer, fDenom;
if(fS < 0.0f) // region 2
{
fTmp0 = fA01 + fB0;
fTmp1 = fA11 + fB1;
if(fTmp1 > fTmp0)
{
fNumer = fTmp1 - fTmp0;
fDenom = fA00-2.0f*fA01+fA11;
if(fNumer >= fDenom)
{
fSqrDist = fA00+2.0f*fB0+fC;
}
else
{
fS = fNumer/fDenom;
fT = 1.0f - fS;
fSqrDist = fS*(fA00*fS+fA01*fT+2.0f*fB0) + fT*(fA01*fS+fA11*fT+2.0f*fB1)+fC;
}
}
else
{
if(fTmp1 <= 0.0f) fSqrDist = fA11+2.0f*fB1+fC;
else if(fB1 >= 0.0f) fSqrDist = fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
}
else if(fT < 0.0f) // region 6
{
fTmp0 = fA01 + fB1;
fTmp1 = fA00 + fB0;
if(fTmp1 > fTmp0)
{
fNumer = fTmp1 - fTmp0;
fDenom = fA00-2.0f*fA01+fA11;
if(fNumer >= fDenom)
{
fSqrDist = fA11+2.0f*fB1+fC;
}
else
{
fT = fNumer/fDenom;
fS = 1.0f - fT;
fSqrDist = fS*(fA00*fS+fA01*fT+2.0f*fB0) + fT*(fA01*fS+fA11*fT+2.0f*fB1)+fC;
}
}
else
{
if(fTmp1 <= 0.0f) fSqrDist = fA00+2.0f*fB0+fC;
else if(fB0 >= 0.0f) fSqrDist = fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
}
else // region 1
{
fNumer = fA11 + fB1 - fA01 - fB0;
if(fNumer <= 0.0f)
{
fSqrDist = fA11+2.0f*fB1+fC;
}
else
{
fDenom = fA00-2.0f*fA01+fA11;
if(fNumer >= fDenom)
{
fSqrDist = fA00+2.0f*fB0+fC;
}
else
{
fS = fNumer/fDenom;
fT = 1.0f - fS;
fSqrDist = fS*(fA00*fS+fA01*fT+2.0f*fB0) + fT*(fA01*fS+fA11*fT+2.0f*fB1)+fC;
}
}
}
}
return fabsf(fSqrDist);
}
static float OPC_SegmentSegmentSqrDist(const IceMaths::Segment& rkSeg0, const IceMaths::Segment& rkSeg1)
{
// Hook
IceMaths::Point rkSeg0Direction = rkSeg0.ComputeDirection();
IceMaths::Point rkSeg1Direction = rkSeg1.ComputeDirection();
IceMaths::Point kDiff = rkSeg0.mP0 - rkSeg1.mP0;
float fA00 = rkSeg0Direction.SquareMagnitude();
float fA01 = -rkSeg0Direction.Dot(rkSeg1Direction);
float fA11 = rkSeg1Direction.SquareMagnitude();
float fB0 = kDiff.Dot(rkSeg0Direction);
float fC = kDiff.SquareMagnitude();
float fDet = fabsf(fA00*fA11-fA01*fA01);
float fB1, fS, fT, fSqrDist, fTmp;
if(fDet>=gs_fTolerance)
{
// line segments are not parallel
fB1 = -kDiff.Dot(rkSeg1Direction);
fS = fA01*fB1-fA11*fB0;
fT = fA01*fB0-fA00*fB1;
if(fS >= 0.0f)
{
if(fS <= fDet)
{
if(fT >= 0.0f)
{
if(fT <= fDet) // region 0 (interior)
{
// minimum at two interior points of 3D lines
float fInvDet = 1.0f/fDet;
fS *= fInvDet;
fT *= fInvDet;
fSqrDist = fS*(fA00*fS+fA01*fT+2.0f*fB0) + fT*(fA01*fS+fA11*fT+2.0f*fB1)+fC;
}
else // region 3 (side)
{
fTmp = fA01+fB0;
if(fTmp>=0.0f) fSqrDist = fA11+2.0f*fB1+fC;
else if(-fTmp>=fA00) fSqrDist = fA00+fA11+fC+2.0f*(fB1+fTmp);
else fSqrDist = fTmp*(-fTmp/fA00)+fA11+2.0f*fB1+fC;
}
}
else // region 7 (side)
{
if(fB0>=0.0f) fSqrDist = fC;
else if(-fB0>=fA00) fSqrDist = fA00+2.0f*fB0+fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
}
else
{
if ( fT >= 0.0 )
{
if ( fT <= fDet ) // region 1 (side)
{
fTmp = fA01+fB1;
if(fTmp>=0.0f) fSqrDist = fA00+2.0f*fB0+fC;
else if(-fTmp>=fA11) fSqrDist = fA00+fA11+fC+2.0f*(fB0+fTmp);
else fSqrDist = fTmp*(-fTmp/fA11)+fA00+2.0f*fB0+fC;
}
else // region 2 (corner)
{
fTmp = fA01+fB0;
if ( -fTmp <= fA00 )
{
if(fTmp>=0.0f) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fTmp*(-fTmp/fA00)+fA11+2.0f*fB1+fC;
}
else
{
fTmp = fA01+fB1;
if(fTmp>=0.0f) fSqrDist = fA00+2.0f*fB0+fC;
else if(-fTmp>=fA11) fSqrDist = fA00+fA11+fC+2.0f*(fB0+fTmp);
else fSqrDist = fTmp*(-fTmp/fA11)+fA00+2.0f*fB0+fC;
}
}
}
else // region 8 (corner)
{
if ( -fB0 < fA00 )
{
if(fB0>=0.0f) fSqrDist = fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
else
{
fTmp = fA01+fB1;
if(fTmp>=0.0f) fSqrDist = fA00+2.0f*fB0+fC;
else if(-fTmp>=fA11) fSqrDist = fA00+fA11+fC+2.0f*(fB0+fTmp);
else fSqrDist = fTmp*(-fTmp/fA11)+fA00+2.0f*fB0+fC;
}
}
}
}
else
{
if ( fT >= 0.0f )
{
if ( fT <= fDet ) // region 5 (side)
{
if(fB1>=0.0f) fSqrDist = fC;
else if(-fB1>=fA11) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
else // region 4 (corner)
{
fTmp = fA01+fB0;
if ( fTmp < 0.0f )
{
if(-fTmp>=fA00) fSqrDist = fA00+fA11+fC+2.0f*(fB1+fTmp);
else fSqrDist = fTmp*(-fTmp/fA00)+fA11+2.0f*fB1+fC;
}
else
{
if(fB1>=0.0f) fSqrDist = fC;
else if(-fB1>=fA11) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
}
}
else // region 6 (corner)
{
if ( fB0 < 0.0f )
{
if(-fB0>=fA00) fSqrDist = fA00+2.0f*fB0+fC;
else fSqrDist = fB0*(-fB0/fA00)+fC;
}
else
{
if(fB1>=0.0f) fSqrDist = fC;
else if(-fB1>=fA11) fSqrDist = fA11+2.0f*fB1+fC;
else fSqrDist = fB1*(-fB1/fA11)+fC;
}
}
}
}
else
{
// line segments are parallel
if ( fA01 > 0.0f )
{
// direction vectors form an obtuse angle
if ( fB0 >= 0.0f )
{
fSqrDist = fC;
}
else if ( -fB0 <= fA00 )
{
fSqrDist = fB0*(-fB0/fA00)+fC;
}
else
{
fB1 = -kDiff.Dot(rkSeg1Direction);
fTmp = fA00+fB0;
if ( -fTmp >= fA01 )
{
fSqrDist = fA00+fA11+fC+2.0f*(fA01+fB0+fB1);
}
else
{
fT = -fTmp/fA01;
fSqrDist = fA00+2.0f*fB0+fC+fT*(fA11*fT+2.0f*(fA01+fB1));
}
}
}
else
{
// direction vectors form an acute angle
if ( -fB0 >= fA00 )
{
fSqrDist = fA00+2.0f*fB0+fC;
}
else if ( fB0 <= 0.0f )
{
fSqrDist = fB0*(-fB0/fA00)+fC;
}
else
{
fB1 = -kDiff.Dot(rkSeg1Direction);
if ( fB0 >= -fA01 )
{
fSqrDist = fA11+2.0f*fB1+fC;
}
else
{
fT = -fB0/fA01;
fSqrDist = fC+fT*(2.0f*fB1+fA11*fT);
}
}
}
}
return fabsf(fSqrDist);
}
inline_ float OPC_SegmentRaySqrDist(const IceMaths::Segment& rkSeg0, const IceMaths::Ray& rkSeg1)
{
return OPC_SegmentSegmentSqrDist(rkSeg0, IceMaths::Segment(rkSeg1.mOrig, rkSeg1.mOrig + rkSeg1.mDir));
}
static float OPC_SegmentTriangleSqrDist(const IceMaths::Segment& segment, const IceMaths::Point& p0, const IceMaths::Point& p1, const IceMaths::Point& p2)
{
// Hook
const IceMaths::Point TriEdge0 = p1 - p0;
const IceMaths::Point TriEdge1 = p2 - p0;
const IceMaths::Point& rkSegOrigin = segment.GetOrigin();
IceMaths::Point rkSegDirection = segment.ComputeDirection();
IceMaths::Point kDiff = p0 - rkSegOrigin;
float fA00 = rkSegDirection.SquareMagnitude();
float fA01 = -rkSegDirection.Dot(TriEdge0);
float fA02 = -rkSegDirection.Dot(TriEdge1);
float fA11 = TriEdge0.SquareMagnitude();
float fA12 = TriEdge0.Dot(TriEdge1);
float fA22 = TriEdge1.Dot(TriEdge1);
float fB0 = -kDiff.Dot(rkSegDirection);
float fB1 = kDiff.Dot(TriEdge0);
float fB2 = kDiff.Dot(TriEdge1);
float fCof00 = fA11*fA22-fA12*fA12;
float fCof01 = fA02*fA12-fA01*fA22;
float fCof02 = fA01*fA12-fA02*fA11;
float fDet = fA00*fCof00+fA01*fCof01+fA02*fCof02;
IceMaths::Ray kTriSeg;
IceMaths::Point kPt;
float fSqrDist, fSqrDist0;
if(fabsf(fDet)>=gs_fTolerance)
{
float fCof11 = fA00*fA22-fA02*fA02;
float fCof12 = fA02*fA01-fA00*fA12;
float fCof22 = fA00*fA11-fA01*fA01;
float fInvDet = 1.0f/fDet;
float fRhs0 = -fB0*fInvDet;
float fRhs1 = -fB1*fInvDet;
float fRhs2 = -fB2*fInvDet;
float fR = fCof00*fRhs0+fCof01*fRhs1+fCof02*fRhs2;
float fS = fCof01*fRhs0+fCof11*fRhs1+fCof12*fRhs2;
float fT = fCof02*fRhs0+fCof12*fRhs1+fCof22*fRhs2;
if ( fR < 0.0f )
{
if ( fS+fT <= 1.0f )
{
if ( fS < 0.0f )
{
if ( fT < 0.0f ) // region 4m
{
// min on face s=0 or t=0 or r=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 3m
{
// min on face s=0 or r=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
}
else if ( fT < 0.0f ) // region 5m
{
// min on face t=0 or r=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 0m
{
// min on face r=0
fSqrDist = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
}
}
else
{
if ( fS < 0.0f ) // region 2m
{
// min on face s=0 or s+t=1 or r=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else if ( fT < 0.0f ) // region 6m
{
// min on face t=0 or s+t=1 or r=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 1m
{
// min on face s+t=1 or r=0
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
}
}
else if ( fR <= 1.0f )
{
if ( fS+fT <= 1.0f )
{
if ( fS < 0.0f )
{
if ( fT < 0.0f ) // region 4
{
// min on face s=0 or t=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 3
{
// min on face s=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
}
}
else if ( fT < 0.0f ) // region 5
{
// min on face t=0
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
}
else // region 0
{
// global minimum is interior, done
fSqrDist = fR*(fA00*fR+fA01*fS+fA02*fT+2.0f*fB0)
+fS*(fA01*fR+fA11*fS+fA12*fT+2.0f*fB1)
+fT*(fA02*fR+fA12*fS+fA22*fT+2.0f*fB2)
+kDiff.SquareMagnitude();
}
}
else
{
if ( fS < 0.0f ) // region 2
{
// min on face s=0 or s+t=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else if ( fT < 0.0f ) // region 6
{
// min on face t=0 or s+t=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 1
{
// min on face s+t=1
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
}
}
}
else // fR > 1
{
if ( fS+fT <= 1.0f )
{
if ( fS < 0.0f )
{
if ( fT < 0.0f ) // region 4p
{
// min on face s=0 or t=0 or r=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 3p
{
// min on face s=0 or r=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
}
else if ( fT < 0.0f ) // region 5p
{
// min on face t=0 or r=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 0p
{
// min face on r=1
kPt = rkSegOrigin+rkSegDirection;
fSqrDist = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
}
}
else
{
if ( fS < 0.0f ) // region 2p
{
// min on face s=0 or s+t=1 or r=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge1;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else if ( fT < 0.0f ) // region 6p
{
// min on face t=0 or s+t=1 or r=1
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
else // region 1p
{
// min on face s+t=1 or r=1
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1-TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
}
}
}
else
{
// segment and triangle are parallel
kTriSeg.mOrig = p0;
kTriSeg.mDir = TriEdge0;
fSqrDist = OPC_SegmentRaySqrDist(segment, kTriSeg);
kTriSeg.mDir = TriEdge1;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
kTriSeg.mOrig = p1;
kTriSeg.mDir = TriEdge1 - TriEdge0;
fSqrDist0 = OPC_SegmentRaySqrDist(segment, kTriSeg);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
fSqrDist0 = OPC_PointTriangleSqrDist(rkSegOrigin, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
kPt = rkSegOrigin+rkSegDirection;
fSqrDist0 = OPC_PointTriangleSqrDist(kPt, p0, p1, p2);
if(fSqrDist0<fSqrDist) fSqrDist = fSqrDist0;
}
return fabsf(fSqrDist);
}
inline_ BOOL LSSCollider::LSSTriOverlap(const IceMaths::Point& vert0_, const IceMaths::Point& vert1_, const IceMaths::Point& vert2_)
{
// Applies the model's local scale
const IceMaths::Point vert0 = vert0_*mLocalScale;
const IceMaths::Point vert1 = vert1_*mLocalScale;
const IceMaths::Point vert2 = vert2_*mLocalScale;
// Stats
mNbVolumePrimTests++;
float s2 = OPC_SegmentTriangleSqrDist(mSeg, vert0, vert1, vert2);
if(s2<mRadius2) return TRUE;
return FALSE;
}