/// <summary>
/// Create a new arrow geometry.
/// </summary>
/// <param name="resourceCreator"> The resource - creator. </param>
/// <param name="transformer"> The source transformer. </param>
/// <param name="matrix"> The matrix. </param>
/// <param name="isAbsolute"> Is absolute? </param>
/// <param name="width"> The absolute width. </param>
/// <param name="value"> The relative value. </param>
/// <param name="leftTail"> The left - tail. </param>
/// <param name="rightTail"> The right - tail. </param>
/// <returns> The product geometry. </returns>
public static CanvasGeometry CreateArrow(ICanvasResourceCreator resourceCreator, ITransformerLTRB transformer, Matrix3x2 matrix, bool isAbsolute = false, float width = 10, float value = 0.5f, GeometryArrowTailType leftTail = GeometryArrowTailType.None, GeometryArrowTailType rightTail = GeometryArrowTailType.Arrow)
{
Vector2 center = Vector2.Transform(transformer.Center, matrix);
Vector2 centerLeft = Vector2.Transform(transformer.CenterLeft, matrix);
Vector2 centerRight = Vector2.Transform(transformer.CenterRight, matrix);
// horizontal
Vector2 horizontal = transformer.Horizontal;
float horizontalLength = horizontal.Length();
// vertical
Vector2 vertical = transformer.Vertical;
float verticalLength = vertical.Length();
Vector2 widthVector = TransformerGeometry.GetArrowWidthVector(isAbsolute, width, value, vertical, verticalLength);
Vector2 focusVector = TransformerGeometry.GetArrowFocusVector(verticalLength, horizontalLength, horizontal);
Vector2 leftFocusTransform = Vector2.Transform(transformer.CenterLeft + focusVector, matrix);
Vector2 rightFocusTransform = Vector2.Transform(transformer.CenterRight - focusVector, matrix);
return(TransformerGeometry.CreateArrowCore
(
resourceCreator,
Vector2.Transform(widthVector + transformer.Center, matrix) - center,
// Left
centerLeft,
Vector2.Transform(transformer.LeftBottom, matrix),
Vector2.Transform(transformer.LeftTop, matrix),
(leftFocusTransform - centerLeft),
leftFocusTransform,
// Right
centerRight,
Vector2.Transform(transformer.RightBottom, matrix),
Vector2.Transform(transformer.RightTop, matrix),
(rightFocusTransform - centerRight),
rightFocusTransform,
leftTail, rightTail
));
}
