24 lines
826 B
JavaScript
24 lines
826 B
JavaScript
import { Skia, AlphaType, ColorType, } from '@shopify/react-native-skia';
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/** pickMap 像素值 regionId+1 → RGBA 纹理（R 通道存查表码） */
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export function pickBufferToSkImage(pickBuffer, cols, rows) {
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if (pickBuffer.length !== cols * rows) {
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return null;
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}
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const rgba = new Uint8Array(cols * rows * 4);
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for (let i = 0; i < pickBuffer.length; i++) {
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const o = i * 4;
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const code = pickBuffer[i];
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rgba[o] = code;
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rgba[o + 1] = code;
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rgba[o + 2] = code;
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rgba[o + 3] = 255;
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}
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const data = Skia.Data.fromBytes(rgba);
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return Skia.Image.MakeImage({
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width: cols,
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height: rows,
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alphaType: AlphaType.Opaque,
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colorType: ColorType.RGBA_8888,
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}, data, cols * 4);
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}
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//# sourceMappingURL=pickMapTexture.js.map
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