private bool AreNormalsEquivalent(ClipperLib.DoublePoint n0, ClipperLib.DoublePoint n1)
{
const double epsilon = 1.0f / 1024.0f;
double ax = Math.Abs(n0.X - n1.X);
double ay = Math.Abs(n0.Y - n1.Y);
return((ax < epsilon) && (ay < epsilon));
}
private List <ClipperLib.IntPoint> RemovePointsOnLine(List <ClipperLib.IntPoint> points)
{
int index = 0;
while (index < points.Count - 2)
{
ClipperLib.DoublePoint normal0 = ClipperLib.ClipperOffset.GetUnitNormal(points[index], points[index + 1]);
ClipperLib.DoublePoint normal1 = ClipperLib.ClipperOffset.GetUnitNormal(points[index], points[index + 2]);
if (AreNormalsEquivalent(normal0, normal1))
{
points.RemoveAt(index + 1);
}
else
{
index++;
}
}
return(points);
}
