foocad-core/uk.co.nickthecoder.foocad.core.util/Matrix2d

Matrix2d

class Matrix2d(val x1y1: Double = 1.0, val x2y1: Double = 0.0, val x3y1: Double = 0.0, val x1y2: Double = 0.0, val x2y2: Double = 1.0, val x3y2: Double = 0.0)

Note. if this only needed for affine transformations, then the bottom row can be hard coded to 0,0,1 This will simplify the maths.

Constructors

Matrix2d

constructor(x1y1: Double = 1.0, x2y1: Double = 0.0, x3y1: Double = 0.0, x1y2: Double = 0.0, x2y2: Double = 1.0, x3y2: Double = 0.0)

Types

Companion

object Companion

Properties

x1y1

val x1y1: Double = 1.0

x1y2

val x1y2: Double = 0.0

x2y1

val x2y1: Double = 0.0

x2y2

val x2y2: Double = 1.0

x3y1

val x3y1: Double = 0.0

x3y2

val x3y2: Double = 0.0

Functions

isReflection

fun isReflection(): Boolean

A single reflection will cause points within a path to be ordered in the opposite direction (clockwise/anticlockwise). This can cause trouble, because the direction of the path determines if it is treated as a hole or a solid.

times

operator fun times(o: Matrix2d): Matrix2d

operator fun times(vector: Vector2): Vector2

fun times(x: Double, y: Double): Vector2

This performs a 3x3 matrix times by a 1x3 matrix, adding an extra 1.0 for the z value of the 1x3 matrix.

toString

open override fun toString(): String