GeomElem

trait GeomElem

A 2D geometric element to which 2D geometric transformations can be applied. Not all elements preserve their full properties under all transformations. So for example a Circle is no longer a Circle after a Shear transformation, but remains an Ellipse. GraphicElem inherits from GeomElem. A Circle is not a GraphicElem but if we add a fill colour to make a CircleFill, or a line width and line colour to it, we have a GraphicElem a graphical element that can be displayed on a canvas or output to SVG. It is expected that all elements that inherit from GeomElem that are not GraphicElems will be Drawable elements, but this has not been finalised.

Companion
object
class Object
trait Matchable
class Any
trait AxisFree
class CArcDraw
class Circle
class ShapeGen
trait RectFill
trait Rect
class PhiRect
class PhiRectY
class RectImp
class Sqlign
trait Ellipse
trait HexReg
class HexRegImp
trait Hexlign
class HexParrX
class HexParrY
trait Rectangle
trait RectS2S4
class SquareImp
trait Square
trait ShapeDraw
trait ShapeFill
trait Polygon
trait Triangle
trait Shape
trait Drawable
trait CurveSeg
class Bezier
trait EArc
class EArcImp
trait EArclign
class CArc
class LineSeg
trait Fillable
trait CanvElem
trait EArcDraw
class LinesDraw
trait LineLike
trait Line
class XLine
class XParallel
object XAxis
object YAxis
trait XorYAxis
class YLine
class YParallel
class Ray
class CurveTail
class LinePath
class LineSegs
class Pt2s

Value members

Abstract methods

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 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.

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

2D Transformation using a ProlignMatrix. The return type will be narrowed in sub classes / traits.

2D Transformation using a ProlignMatrix. The return type will be narrowed in sub classes / traits.

def reflect(lineLike: LineLike): GeomElem

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.

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.

def rotate(angle: AngleVec): GeomElem

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

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

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 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 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.

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.

def scale(operand: Double): GeomElem

Uniform 2D geometric 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. The Return type will be narrowed in sub traits / classes.

Uniform 2D geometric 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. The Return type will be narrowed in sub traits / classes.

def scaleXY(xOperand: Double, yOperand: Double): GeomElem

Scaling X and Y axes independently, 2D geometric transformation on this GeomElem, returns a new GeomElem. This allows different scaling factors across X and Y dimensions. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

Scaling X and Y axes independently, 2D geometric transformation on this GeomElem, returns a new GeomElem. This allows different scaling factors across X and Y dimensions. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

def shearX(operand: Double): GeomElem

Shear 2D geometric transformation along the X Axis on a GeomElem. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

Shear 2D geometric transformation along the X Axis on a GeomElem. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

def shearY(operand: Double): GeomElem

Shear 2D geometric transformation along the Y Axis on a GeomElem. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

Shear 2D geometric transformation along the Y Axis on a GeomElem. The return type will be narrowed in sub classes and traits. This is an affine transformation but it is not a similar transformation.

def slateXY(xDelta: Double, yDelta: Double): GeomElem

Translate 2D geometric transformation, taking the xOffset and yOffset as parameters on this GeomElem returning a GeomElem. The Return type will be narrowed in sub traits. End users will often want to use the slate method taking a Pt2 or Vec2 as a parameter, the slateX or the slateY methods. These methods will be offered as extension methods using this method for their implementations.

Translate 2D geometric transformation, taking the xOffset and yOffset as parameters on this GeomElem returning a GeomElem. The Return type will be narrowed in sub traits. End users will often want to use the slate method taking a Pt2 or Vec2 as a parameter, the slateX or the slateY methods. These methods will be offered as extension methods using this method for their implementations.