swing-ui-foundation/org.jetbrains.compose.swing.foundation.graphics/TransformOrigin

TransformOrigin

@Immutable

class TransformOrigin(val pivotFractionX: Float, val pivotFractionY: Float)

The point scale and rotation are applied around, as fractions of the content's own painted box.

Both fractions are measured from the box's left and top edge whatever the reading order: an origin is a point on the content, and placement has already resolved right-to-left by the time anything paints.

A fraction outside 0f..1f names a point outside the box, which scales the content away from a pivot it does not cover.

Constructors

TransformOrigin

constructor(pivotFractionX: Float, pivotFractionY: Float)

Types

Companion

object Companion

The origin scale and rotation are applied around where none is named.

Properties

pivotFractionX

val pivotFractionX: Float

where the pivot sits across the width, 0f at the left edge and 1f at the right one.

pivotFractionY

val pivotFractionY: Float

where the pivot sits down the height, 0f at the top edge and 1f at the bottom one.

Functions

component1

@Stable

operator fun component1(): Float

The pivotFractionX component, for destructuring.

component2

@Stable

operator fun component2(): Float

The pivotFractionY component, for destructuring.

copy

fun copy(pivotFractionX: Float = this.pivotFractionX, pivotFractionY: Float = this.pivotFractionY): TransformOrigin

A copy of this origin, overriding pivotFractionX and/or pivotFractionY.

createTransform

fun createTransform(box: Rectangle2D, scaleX: Float = 1.0f, scaleY: Float = 1.0f, rotationZ: Float = 0.0f): AffineTransform

The Java2D matrix: scale first, then rotate in degrees around this origin in box. Positive rotationZ turns clockwise on screen. The returned transform belongs to the caller.

equals

open operator override fun equals(other: Any?): Boolean

hashCode

open override fun hashCode(): Int

toString

open override fun toString(): String