maps-kt-features/space.kscience.maps.features/CanvasState

CanvasState

abstract class CanvasState<T : Any>(val viewConfig: ViewConfig<T>)

A state holder for current canvas size and view point. Allows transformation from coordinates to pixels and back

Constructors

constructor(viewConfig: ViewConfig<T>)

Properties

var canvasSize: DpSize

var selectRect: DpRect?

abstract val space: CoordinateSpace<T>

val viewConfig: ViewConfig<T>

var viewPoint: ViewPoint<T>

val zoom: Float

Functions

computeViewPoint

abstract fun computeViewPoint(rectangle: Rectangle<T>): ViewPoint<T>

abstract fun ViewPoint<T>.moveBy(x: Dp, y: Dp): ViewPoint<T>

abstract fun DpOffset.toCoordinates(): T

fun toCoordinates(offset: Offset, density: Density): T

abstract fun T.toDpOffset(): DpOffset

abstract fun Rectangle<T>.toDpRect(): DpRect

fun toOffset(coordinates: T, density: Density): Offset