static bool IsWithinGapLimits(SkeletonMinutia end1, SkeletonMinutia end2)
{
int distanceSq = (end1.Position - end2.Position).LengthSq;
if (distanceSq <= Integers.Sq(Parameters.MaxRuptureSize))
{
return(true);
}
if (distanceSq > Integers.Sq(Parameters.MaxGapSize))
{
return(false);
}
double gapDirection = DoubleAngle.Atan(end1.Position, end2.Position);
double direction1 = DoubleAngle.Atan(end1.Position, AngleSampleForGapRemoval(end1));
if (DoubleAngle.Distance(direction1, DoubleAngle.Opposite(gapDirection)) > Parameters.MaxGapAngle)
{
return(false);
}
double direction2 = DoubleAngle.Atan(end2.Position, AngleSampleForGapRemoval(end2));
if (DoubleAngle.Distance(direction2, gapDirection) > Parameters.MaxGapAngle)
{
return(false);
}
return(true);
}
public EdgeShape(ImmutableMinutia reference, ImmutableMinutia neighbor)
{
IntPoint vector = neighbor.Position - reference.Position;
double quadrant = 0;
int x = vector.X;
int y = vector.Y;
if (y < 0)
{
x = -x;
y = -y;
quadrant = Math.PI;
}
if (x < 0)
{
int tmp = -x;
x = y;
y = tmp;
quadrant += DoubleAngle.HalfPi;
}
int shift = 32 - (int)Integers.LeadingZeros(((uint)x | (uint)y) >> PolarCacheBits);
int offset = (y >> shift) * PolarCacheRadius + (x >> shift);
Length = PolarDistanceCache[offset] << shift;
double angle = PolarAngleCache[offset] + quadrant;
ReferenceAngle = DoubleAngle.Difference(reference.Direction, angle);
NeighborAngle = DoubleAngle.Difference(neighbor.Direction, DoubleAngle.Opposite(angle));
}
