Class AffineTransformation

An affine transformation that can transform points.

Index

Constructors

constructor

new AffineTransformation(): AffineTransformation
Initialize to the identity.

Returns AffineTransformation
- Defined in GDJS/Runtime/affinetransformation.ts:11

Properties

`Private` matrix

matrix: Float32Array

Methods

concatenate

concatenate(other): void
Concatenate a transformation after this one.
Parameters
- other: AffineTransformation
  The transformation to concatenate.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:354

copyFrom

copyFrom(other): AffineTransformation
Copy a transformation.
Parameters
- other: AffineTransformation
  The transformation to copy.
Returns AffineTransformation
- Defined in GDJS/Runtime/affinetransformation.ts:90

equals

equals(other): boolean
Check if this is equals to another transformation.
Parameters
- other: AffineTransformation
  The transformation to check.
Returns boolean
- Defined in GDJS/Runtime/affinetransformation.ts:53

flipX

flipX(anchorX): void
Concatenate an horizontal flip.
Parameters
- anchorX: number
  The flip anchor point X.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:313

flipY

flipY(anchorY): void
Concatenate an vertical flip.
Parameters
- anchorY: number
  The flip anchor point Y.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:343

invert

invert(): AffineTransformation
Invert the matrix.

Returns AffineTransformation
- Defined in GDJS/Runtime/affinetransformation.ts:445

isIdentity

isIdentity(): boolean
Check if this transformation is the identity.

Returns boolean
- Defined in GDJS/Runtime/affinetransformation.ts:37

nearlyEquals

nearlyEquals(other, epsilon): boolean
Check if this is almost equals to another transformation.
Parameters
- other: AffineTransformation
  The transformation to check.
- epsilon: number
  The relative margin error.
Returns boolean
- Defined in GDJS/Runtime/affinetransformation.ts:72

preConcatenate

preConcatenate(other): void
Concatenate a transformation before this one.
Parameters
- other: AffineTransformation
  The transformation to concatenate.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:390

rotate

rotate(angle): void
Concatenate a rotation.
Parameters
- angle: number
  The angle of rotation in radians.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:214

rotateAround

rotateAround(angle, anchorX, anchorY): void
Concatenate a rotation.
Parameters
- angle: number
  The angle of rotation in radians.
- anchorX: number
  The rotation anchor point X.
- anchorY: number
  The rotation anchor point Y.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:283

scale

scale(sx, sy): void
Concatenate a scale.
Parameters
- sx: number
  The horizontal scale value.
- sy: number
  The vertical scale value.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:166

setToFlipX

setToFlipX(anchorX): void
Reset to an horizontal flip.
Parameters
- anchorX: number
  The flip anchor point X.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:295

setToFlipY

setToFlipY(anchorY): void
Reset to an vertical flip.
Parameters
- anchorY: number
  The flip anchor point Y.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:325

setToIdentity

setToIdentity(): void
Reset to the identity.

Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:21

setToRotation

setToRotation(angle): void
Reset to a rotation.
Parameters
- angle: number
  The angle of rotation in radians.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:185

setToRotationAround

setToRotationAround(angle, anchorX, anchorY): void
Reset to a rotation.
Parameters
- angle: number
  The angle of rotation in radians.
- anchorX: number
  The rotation anchor point X.
- anchorY: number
  The rotation anchor point Y.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:252

setToScale

setToScale(sx, sy): void
Reset to a scale.
Parameters
- sx: number
  The horizontal scale value.
- sy: number
  The vertical scale value.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:147

setToTranslation

setToTranslation(tx, ty): void
Reset to a translation.
Parameters
- tx: number
  The horizontal translation value.
- ty: number
  The vertical translation value.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:110

toString

toString(): string
Returns string
- Defined in GDJS/Runtime/affinetransformation.ts:467

transform

transform(source, destination): void
Transform a point.
Parameters
- source: FloatPoint
  The point to transform.
- destination: FloatPoint
  The Point to store the transformed coordinates.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:428

translate

translate(tx, ty): void
Concatenate a translation.
Parameters
- tx: number
  The horizontal translation value.
- ty: number
  The vertical translation value.
Returns void
- Defined in GDJS/Runtime/affinetransformation.ts:129