mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-21 17:56:04 +08:00
92 lines
4.1 KiB
Swift
92 lines
4.1 KiB
Swift
/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated April 5, 2025. Replaces all prior versions.
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*
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* Copyright (c) 2013-2025, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software
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* or otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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import CoreGraphics
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import Foundation
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#if canImport(UIKit)
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import UIKit
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extension SkeletonDrawableWrapper {
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/// Render the ``Skeleton`` to a `CGImage`
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///
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/// Parameters:
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/// - size: The size of the `CGImage` that should be rendered.
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/// - backgroundColor: the background color of the image
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/// - scaleFactor: The scale factor. Set this to `UIScreen.main.scale` if you want to show the image in a view
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public func renderToImage(size: CGSize, backgroundColor: UIColor, scaleFactor: CGFloat = 1) throws -> CGImage? {
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let spineView = SpineUIView(
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controller: SpineController(disposeDrawableOnDeInit: false), // Doesn't own the drawable
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backgroundColor: backgroundColor
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)
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spineView.frame = CGRect(origin: .zero, size: size)
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spineView.isPaused = false
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spineView.enableSetNeedsDisplay = false
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spineView.framebufferOnly = false
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spineView.contentScaleFactor = scaleFactor
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try spineView.load(drawable: self)
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spineView.renderer?.waitUntilCompleted = true
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spineView.delegate?.draw(in: spineView)
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guard let texture = spineView.currentDrawable?.texture else {
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throw SpineError("Could not read texture.")
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}
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let width = texture.width
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let height = texture.height
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let rowBytes = width * 4
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let data = UnsafeMutableRawPointer.allocate(byteCount: rowBytes * height, alignment: MemoryLayout<UInt8>.alignment)
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defer {
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data.deallocate()
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}
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let region = MTLRegionMake2D(0, 0, width, height)
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texture.getBytes(data, bytesPerRow: rowBytes, from: region, mipmapLevel: 0)
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let bitmapInfo = CGBitmapInfo(
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rawValue: CGImageAlphaInfo.premultipliedFirst.rawValue
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).union(.byteOrder32Little)
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let colorSpace = CGColorSpaceCreateDeviceRGB()
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guard
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let context = CGContext(
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data: data, width: width, height: height, bitsPerComponent: 8, bytesPerRow: rowBytes, space: colorSpace,
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bitmapInfo: bitmapInfo.rawValue),
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let cgImage = context.makeImage()
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else {
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throw SpineError("Could not create image.")
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}
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return cgImage
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}
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}
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#endif
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