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Surma
2018-05-21 13:36:05 +01:00
parent 1533728f59
commit a9e1c38971
1 changed files with 3 additions and 2 deletions
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5
src/components/app/index.tsx
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@@ -28,11 +28,12 @@ export default class App extends Component<Props, State> {
private async getImageData(bitmap: ImageBitmap): Promise<ImageData> { private async getImageData(bitmap: ImageBitmap): Promise<ImageData> {
// Make canvas same size as image // Make canvas same size as image
const canvas = document.createElement('canvas'); const canvas = document.createElement('canvas');
[canvas.width, canvas.height] = [bitmap.width, bitmap.height]; canvas.width = bitmap.width;
canvas.height = bitmap.height;
// Draw image onto canvas // Draw image onto canvas
const ctx = canvas.getContext('2d'); const ctx = canvas.getContext('2d');
if (!ctx) { if (!ctx) {
throw new Error("Could not create canvas contex"); throw new Error("Could not create canvas context");
} }
ctx.drawImage(bitmap, 0, 0); ctx.drawImage(bitmap, 0, 0);
return ctx.getImageData(0, 0, bitmap.width, bitmap.height); return ctx.getImageData(0, 0, bitmap.width, bitmap.height);