26 lines
No EOL
1.4 KiB
JavaScript
26 lines
No EOL
1.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var env_1 = require("../env");
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var createCanvas_1 = require("./createCanvas");
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var getContext2dOrThrow_1 = require("./getContext2dOrThrow");
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var getMediaDimensions_1 = require("./getMediaDimensions");
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function imageToSquare(input, inputSize, centerImage) {
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if (centerImage === void 0) { centerImage = false; }
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var _a = env_1.env.getEnv(), Image = _a.Image, Canvas = _a.Canvas;
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if (!(input instanceof Image || input instanceof Canvas)) {
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throw new Error('imageToSquare - expected arg0 to be HTMLImageElement | HTMLCanvasElement');
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}
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var dims = getMediaDimensions_1.getMediaDimensions(input);
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var scale = inputSize / Math.max(dims.height, dims.width);
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var width = scale * dims.width;
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var height = scale * dims.height;
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var targetCanvas = createCanvas_1.createCanvas({ width: inputSize, height: inputSize });
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var inputCanvas = input instanceof Canvas ? input : createCanvas_1.createCanvasFromMedia(input);
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var offset = Math.abs(width - height) / 2;
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var dx = centerImage && width < height ? offset : 0;
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var dy = centerImage && height < width ? offset : 0;
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getContext2dOrThrow_1.getContext2dOrThrow(targetCanvas).drawImage(inputCanvas, dx, dy, width, height);
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return targetCanvas;
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}
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exports.imageToSquare = imageToSquare;
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//# sourceMappingURL=imageToSquare.js.map
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