Reflection: R6 class representing a reflection

In PlaneGeometry: Plane Geometry

R6 class representing a reflection

Description

A reflection is given by a line.

Active bindings

line

get or set the line of the reflection

Methods

Public methods

• Reflection$new()

• Reflection$print()

• Reflection$reflect()

• Reflection$transform()

• Reflection$reflectCircle()

• Reflection$transformCircle()

• Reflection$reflectLine()

• Reflection$transformLine()

• Reflection$getMatrix()

• Reflection$asAffine()

• Reflection$clone()

---

Method new()

Create a new Reflection object.

Usage

Reflection$new(line)

Arguments

line

a Line object

Returns

A new Reflection object.

Examples

l <- Line$new(c(1,1), c(1.5,1.5), FALSE, TRUE)
Reflection$new(l)

---

Method print()

Show instance of a reflection object.

Usage

Reflection$print(...)

Arguments

...

ignored

---

Method reflect()

Reflect a point.

Usage

Reflection$reflect(M)

Arguments

M

a point, Inf allowed

---

Method transform()

An alias of reflect.

Usage

Reflection$transform(M)

Arguments

M

a point, Inf allowed

---

Method reflectCircle()

Reflect a circle.

Usage

Reflection$reflectCircle(circ)

Arguments

circ

a Circle object

Returns

A Circle object.

---

Method transformCircle()

An alias of reflectCircle.

Usage

Reflection$transformCircle(circ)

Arguments

circ

a Circle object

Returns

A Circle object.

---

Method reflectLine()

Reflect a line.

Usage

Reflection$reflectLine(line)

Arguments

line

a Line object

Returns

A Line object.

---

Method transformLine()

An alias of reflectLine.

Usage

Reflection$transformLine(line)

Arguments

line

a Line object

Returns

A Line object.

---

Method getMatrix()

Augmented matrix of the reflection.

Usage

Reflection$getMatrix()

Returns

A 3x3 matrix.

Examples

R <- Reflection$new(Line$new(c(2,2), c(4,5)))
P <- c(1,5)
R$reflect(P)
R$getMatrix() %*% c(P,1)

---

Method asAffine()

Convert the reference reflection to an Affine object.

Usage

Reflection$asAffine()

---

Method clone()

The objects of this class are cloneable with this method.

Usage

Reflection$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

## ------------------------------------------------
## Method `Reflection$new`
## ------------------------------------------------

l <- Line$new(c(1,1), c(1.5,1.5), FALSE, TRUE)
Reflection$new(l)

## ------------------------------------------------
## Method `Reflection$getMatrix`
## ------------------------------------------------

R <- Reflection$new(Line$new(c(2,2), c(4,5)))
P <- c(1,5)
R$reflect(P)
R$getMatrix() %*% c(P,1)

PlaneGeometry documentation built on Aug. 10, 2023, 1:09 a.m.