PolygonCompoundImp

2D geometric transformation using a ProlignMatrix on a GraphicElem, returns a GraphicElem. The Return type will be narrowed in sub traits / classes.

Reflect 2D geometric transformation across a line, line segment or ray on a GeomElem. The return type will be narrowed in sub classes and traits.

Renders this functional immutable GraphicElem, using the imperative methods of the abstract pCanv.CanvasPlatform interface.

Rotation 2D geometric transformation on a GeomElem. The return type will be narrowed in sub classes and traits.

Uniform scaling transformation. The scale name was chosen for this operation as it is normally the desired operation and preserves Circles and Squares. Use the xyScale method for differential scaling.

XY scaling 2D geometric transformation on a GraphicElem, returns a GrpahicElem. This allows different scaling factors across X and Y dimensions. The return type will be narrowed in sub classes and traits.

Shear 2D geometric transformation along the X Axis on a GraphicElem, returns a GraphicElem. The return type will be narrowed in sub classes and traits.

Shear 2D geometric transformation along the Y Axis on a GraphicElem, returns a GraphicElem. The return type will be narrowed in sub classes and traits.

Translate geometric transformation.

The centre of the bounding rectangle. consider also using cenDefault.

The bounding Rectangle provides an initial exclusion test as to whether the pointer is inside the polygon / shape

The width of the BoundingRect of this object.

This method converts this non standard graphic element into CanvElems that can be processed by the pCanv.CanvasPlatform.

If the geometric element has a defined centre then the cenDefault uses that, else it defaults to the centre of the bounding rectangle.

Checks for 2 or more vertices

Checks for 3 or more vertices

Mirror, reflection 2D geometric transformation across the Y axis by negating X. The return type will be narrowed in sub traits / classes.

Mirror, reflection 2D geometric transformation across the X axis by negating y. The return type will be narrowed in sub traits / classes.

Rotation of 180 degrees, 2D geometric transformation on a GeomElem, returns a GeomElem. The return type will be narrowed in sub classes and traits.

Rotation positive or anti clockwise 270 degrees, 2D geometric transformation on a GeomElem, returns a GeomElem. The return type will be narrowed in sub classes and traits.

Rotation positive or anti clockwise 90 degrees, 2D geometric transformation on a GeomElem, returns a GeomElem. The return type will be narrowed in sub classes and traits.

The number of vertices.