PeachDrawing.Core
PeachDrawing.Core.RadialGradientBrush
RadialGradientBrush.Transform Property
An optional matrix, applied after the geometry above, that carries the gradient’s ellipse into the coordinates the brush is painted in - what lets it rotate or skew, which a pair of axis-aligned radii cannot express. null when the geometry is already in paint coordinates.
public System.Nullable<System.Numerics.Matrix3x2> Transform { get; }