76 lines
2.9 KiB
Swift
76 lines
2.9 KiB
Swift
//
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// Copyright (c) 2022 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import YandexMapsMobile
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public extension YMKScreenRect {
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func cameraPosition(in mapView: YMKMapView, insets: UIEdgeInsets) -> YMKCameraPosition? {
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let mapWindow: YMKMapWindow = mapView.mapWindow // mapWindow is IUO
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let center = YMKScreenPoint(x: (topLeft.x + bottomRight.x) / 2,
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y: (topLeft.y + bottomRight.y) / 2)
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guard let coordinatePoint = mapWindow.screenToWorld(with: center) else {
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return nil
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}
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let mapInsets: UIEdgeInsets
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if #available(iOS 11.0, *) {
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mapInsets = (insets + mapView.safeAreaInsets) * CGFloat(mapWindow.scaleFactor)
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} else {
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mapInsets = insets * CGFloat(mapWindow.scaleFactor)
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}
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let size = CGSize(width: mapWindow.width(), height: mapWindow.height())
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guard let minScale = minScale(for: size, insets: mapInsets) else {
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return nil
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}
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let map = mapWindow.map
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let newZoom = map.cameraPosition.zoom + log2(minScale)
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let minZoom = map.getMinZoom()
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let maxZoom = map.getMaxZoom()
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return YMKCameraPosition(target: coordinatePoint,
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zoom: min(max(newZoom, minZoom), maxZoom),
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azimuth: 0,
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tilt: 0)
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}
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private func minScale(for mapSize: CGSize, insets: UIEdgeInsets) -> Float? {
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let width = CGFloat(abs(bottomRight.x - topLeft.x))
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let height = CGFloat(abs(topLeft.y - bottomRight.y))
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if width > 0 || height > 0 {
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let scaleX = mapSize.width / width - (insets.left + insets.right) / width
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let scaleY = mapSize.height / height - (insets.top + insets.bottom) / height
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return Float(min(scaleX, scaleY))
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}
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return nil
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}
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}
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