public static void NormalizeInPlace(this VectorDouble[] vecs)
{
for (int i = 0; i < vecs.Length; i++)
{
vecs[i] = VectorDouble.Normalize(vecs[i]);
}
}
public static bool IsFlipped(this Matrix3x2Double matrix)
{
if (matrix.IsIdentity)
{
return(false);
}
VectorDouble vec = new VectorDouble(1.0, 0.0);
VectorDouble num2 = matrix.Transform(vec);
double num4 = Math.Atan2(num2.Y, num2.X) * 57.295779513082323;
VectorDouble num5 = new VectorDouble(0.0, 1.0);
VectorDouble num6 = matrix.Transform(num5);
double num8 = (Math.Atan2(num6.Y, num6.X) * 57.295779513082323) - 90.0;
while (num4 < 0.0)
{
num4 += 360.0;
}
while (num8 < 0.0)
{
num8 += 360.0;
}
double num9 = Math.Abs((double)(num4 - num8));
return((num9 > 1.0) && (num9 < 359.0));
}
public static VectorDouble NormalizeOrZeroCopy(this VectorDouble vec)
{
if (vec.Length == 0.0)
{
return(new VectorDouble(0.0, 0.0));
}
return(VectorDouble.Normalize(vec));
}
private static VectorDouble RotateCopy(this VectorDouble vec, double angle)
{
double num = (angle * 3.1415926535897931) / 180.0;
double length = vec.Length;
double d = num + Math.Atan2(vec.Y, vec.X);
double x = Math.Cos(d);
return(new VectorDouble(x, Math.Sin(d)));
}
public static double GetRotationRadians(this Matrix3x2Double matrix)
{
if (matrix.IsIdentity)
{
return(0.0);
}
VectorDouble vec = new VectorDouble(1.0, 0.0);
VectorDouble num2 = matrix.Transform(vec);
return(Math.Atan2(num2.Y, num2.X));
}
public Radial(PointDouble startPoint, PointDouble endPoint) : base(startPoint, endPoint)
{
VectorDouble num2 = (VectorDouble)(endPoint - startPoint);
double length = num2.Length;
if (length == 0.0)
{
this.invDistanceScale = 0.0;
}
else
{
this.invDistanceScale = 1.0 / length;
}
}
protected LinearBase(PointDouble startPoint, PointDouble endPoint) : base(startPoint, endPoint)
{
VectorDouble num = (VectorDouble)(endPoint - startPoint);
double length = num.Length;
if (base.endPointX == base.startPointX)
{
this.dtdx = 0.0;
}
else
{
this.dtdx = num.X / (length * length);
}
if (base.endPointY == base.startPointY)
{
this.dtdy = 0.0;
}
else
{
this.dtdy = num.Y / (length * length);
}
}
public static bool IsCloseToZero(this VectorDouble vec) => (DoubleUtil.IsCloseToZero(vec.X) && DoubleUtil.IsCloseToZero(vec.Y));
public static RectDouble Offset(RectDouble rect, VectorDouble offset) => Offset(rect, offset.x, offset.y);
public PointAndTangentDouble(PointDouble point, VectorDouble tangent)
{
this.point = point;
this.tangent = tangent;
}
public static PointDouble Offset(PointDouble pt, VectorDouble offset) => new PointDouble(pt.x + offset.x, pt.y + offset.y);