public override void Draw(SKCanvas canvas, SKPaint paint)
{
float vx = _p2.X - _p1.X;
float vy = _p2.Y - _p1.Y;
float dist = (float)Math.Sqrt(vx * vx + vy * vy);
vx /= dist;
vy /= dist;
DrawArrowhead(canvas, paint, _p2, vx, vy, SkiaHelper.ToPixel(_arrowLength));
}
public static SKPoint ToPixelSKPoint(this Point formsPoint) => new SKPoint(SkiaHelper.ToPixel(formsPoint.X), SkiaHelper.ToPixel(formsPoint.Y));
