demo报错修改
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@ -36,13 +36,13 @@ export class Downsampler {
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orientedSourceHeight = sourceWidth;
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}
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/*安卓的模式*/
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let exactScaleFactor: number = new FitCenter().getScaleFactor(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
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let exactScaleFactor: number = FitCenter.getScaleFactor(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
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if (exactScaleFactor <= 0) {
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throw new Error("Cannot round with exactScaleFactor");
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}
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console.log('exactScaleFactor', exactScaleFactor)
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/*安卓的模式*/
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let rounding: SampleSizeRounding = new FitCenter().getSampleSizeRounding(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
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let rounding: SampleSizeRounding = CenterOutside.getSampleSizeRounding(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
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if (rounding == null) {
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throw new Error("Cannot round with null rounding");
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}
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@ -53,6 +53,7 @@ export class Downsampler {
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let scaleFactor = rounding == SampleSizeRounding.MEMORY ? Math.max(widthScaleFactor, heightScaleFactor) : Math.min(widthScaleFactor, heightScaleFactor)
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// 将整型的缩放因子转换为2的次幂采样大小
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let powerOfTwoSampleSize: number = 0;
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powerOfTwoSampleSize = Math.max(1,this.highestOneBit(scaleFactor))
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if (rounding == SampleSizeRounding.MEMORY && powerOfTwoSampleSize < (1 / exactScaleFactor)) {
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powerOfTwoSampleSize = powerOfTwoSampleSize << 1;
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}
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