PanZoomMetrics
data class PanZoomMetrics(val center: DoubleOffset = DoubleOffset.Zero, val zoom: Double = 1.0, val scale: Double = 1.0, val viewportSize: IntSize = IntSize.Zero, val contentBounds: LongRect = LongRect.Zero, val fit: PanZoomFit = PanZoomFit.Contain, val geometryKnown: Boolean = false)(source)
Immutable position and resolved geometry snapshot for a pan-and-zoom viewport.
zoom is a multiplier over the base fit scale, while scale is the resolved number of logical viewport pixels per content unit. Before a viewport publishes geometry, geometryKnown is false and scale is only a finite placeholder that must not be used for coordinate conversion.
Throws
when numeric values are not finite and positive where required, or known geometry is empty.
Constructors
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constructor(center: DoubleOffset = DoubleOffset.Zero, zoom: Double = 1.0, scale: Double = 1.0, viewportSize: IntSize = IntSize.Zero, contentBounds: LongRect = LongRect.Zero, fit: PanZoomFit = PanZoomFit.Contain, geometryKnown: Boolean = false)
Properties
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content coordinate shown at the viewport center.
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current positive half-open content bounds when geometryKnown is true.
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base scale policy.
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whether a viewport has published usable geometry.
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current positive viewport extent when geometryKnown is true.