void R2Vector::
Mirror(const R2Line& line)
{
// Mirror vector across line
double d = Dot(line.Normal());
*this += line.Normal() * (-2.0 * d);
}
void R2Point::
Mirror(const R2Line& line)
{
// Mirror point across line
double d = R2SignedDistance(*this, line);
*this += line.Normal() * (-2.0 * d);
}
RNLength R2SignedDistance(const R2Line& line, const R2Box& box)
{
// Return signed distance from line to box
RNQuadrant quadrant = line.Normal().Quadrant();
RNScalar d1 = R2SignedDistance(line, box.Corner(~quadrant & 0x3));
if (RNIsPositiveOrZero(d1)) return d1;
RNScalar d2 = R2SignedDistance(line, box.Corner(quadrant));
if (RNIsNegative(d2)) return d2;
else return 0.0;
}
