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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.ImageChannel = void 0;
var _colorUtils = require("./colorUtils");
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the 'License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class ImageChannel {
static intoRGB(width, height, data, options = {}) {
const {
paddingSize = 0,
paddingColorOdd = [255, 0, 255],
paddingColorEven = [0, 255, 0]
} = options;
const newWidth = width + 2 * paddingSize;
const newHeight = height + 2 * paddingSize;
const r = new Uint8Array(newWidth * newHeight);
const g = new Uint8Array(newWidth * newHeight);
const b = new Uint8Array(newWidth * newHeight);
for (let y = 0; y < newHeight; ++y) {
for (let x = 0; x < newWidth; ++x) {
const index = y * newWidth + x;
if (y >= paddingSize && y < newHeight - paddingSize && x >= paddingSize && x < newWidth - paddingSize) {
const offset = ((y - paddingSize) * width + (x - paddingSize)) * 4;
const alpha = data[offset + 3] === 255 ? 1 : data[offset + 3] / 255;
r[index] = (0, _colorUtils.blendWithWhite)(data[offset], alpha);
g[index] = (0, _colorUtils.blendWithWhite)(data[offset + 1], alpha);
b[index] = (0, _colorUtils.blendWithWhite)(data[offset + 2], alpha);
} else {
const color = (y + x) % 2 === 0 ? paddingColorEven : paddingColorOdd;
r[index] = color[0];
g[index] = color[1];
b[index] = color[2];
}
}
}
return [new ImageChannel(newWidth, newHeight, r), new ImageChannel(newWidth, newHeight, g), new ImageChannel(newWidth, newHeight, b)];
}
constructor(width, height, data) {
this.data = void 0;
this.width = void 0;
this.height = void 0;
this.data = data;
this.width = width;
this.height = height;
}
get(x, y) {
return this.data[y * this.width + x];
}
boundXY(x, y) {
return [Math.min(Math.max(x, 0), this.width - 1), Math.min(Math.max(y, 0), this.height - 1)];
}
}
exports.ImageChannel = ImageChannel;