17 lines
444 B
TypeScript
17 lines
444 B
TypeScript
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export function getDataUrlFromArr(arr: Uint8ClampedArray, w: number, h: number) {
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if (typeof w === 'undefined' || typeof h === 'undefined')
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w = h = Math.sqrt(arr.length / 4)
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const canvas = document.createElement('canvas')
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const ctx = canvas.getContext('2d')!
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canvas.width = w
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canvas.height = h
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const imgData = ctx.createImageData(w, h)
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imgData.data.set(arr)
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ctx.putImageData(imgData, 0, 0)
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return canvas.toDataURL()
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}
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