public static void CreateMarker(this SvgMarker svgMarker, SvgVisualElement pOwner, SKPoint pRefPoint, SKPoint pMarkerPoint1, SKPoint pMarkerPoint2, SKPoint pMarkerPoint3, SKRect skOwnerBounds, ref List <Drawable>?markerDrawables, CompositeDisposable disposable)
{
float xDiff = pMarkerPoint2.X - pMarkerPoint1.X;
float yDiff = pMarkerPoint2.Y - pMarkerPoint1.Y;
float fAngle1 = (float)(Math.Atan2(yDiff, xDiff) * 180.0 / Math.PI);
xDiff = pMarkerPoint3.X - pMarkerPoint2.X;
yDiff = pMarkerPoint3.Y - pMarkerPoint2.Y;
float fAngle2 = (float)(Math.Atan2(yDiff, xDiff) * 180.0 / Math.PI);
var markerDrawable = new MarkerDrawable(svgMarker, pOwner, pRefPoint, (fAngle1 + fAngle2) / 2, skOwnerBounds, null, null);
if (markerDrawables == null)
{
markerDrawables = new List <Drawable>();
}
markerDrawables.Add(markerDrawable);
disposable.Add(markerDrawable);
}
public static void CreateMarker(this SvgMarker svgMarker, SvgVisualElement pOwner, SKPoint pRefPoint, SKPoint pMarkerPoint1, SKPoint pMarkerPoint2, bool isStartMarker, SKRect skOwnerBounds, ref List <Drawable>?markerDrawables, CompositeDisposable disposable, Attributes ignoreAttributes = Attributes.None)
{
float fAngle1 = 0f;
if (svgMarker.Orient.IsAuto)
{
float xDiff = pMarkerPoint2.X - pMarkerPoint1.X;
float yDiff = pMarkerPoint2.Y - pMarkerPoint1.Y;
fAngle1 = (float)(Math.Atan2(yDiff, xDiff) * 180.0 / Math.PI);
if (isStartMarker && svgMarker.Orient.IsAutoStartReverse)
{
fAngle1 += 180;
}
}
var markerDrawable = new MarkerDrawable(svgMarker, pOwner, pRefPoint, fAngle1, skOwnerBounds, null, null, ignoreAttributes);
if (markerDrawables == null)
{
markerDrawables = new List <Drawable>();
}
markerDrawables.Add(markerDrawable);
disposable.Add(markerDrawable);
}