/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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/*namespace com.google.zxing.common {*/
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import GridSampler from './GridSampler';
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import BitMatrix from './BitMatrix';
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import PerspectiveTransform from './PerspectiveTransform';
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import NotFoundException from '../NotFoundException';
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/**
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* @author Sean Owen
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*/
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var DefaultGridSampler = /** @class */ (function (_super) {
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__extends(DefaultGridSampler, _super);
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function DefaultGridSampler() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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/*@Override*/
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DefaultGridSampler.prototype.sampleGrid = function (image, dimensionX /*int*/, dimensionY /*int*/, p1ToX /*float*/, p1ToY /*float*/, p2ToX /*float*/, p2ToY /*float*/, p3ToX /*float*/, p3ToY /*float*/, p4ToX /*float*/, p4ToY /*float*/, p1FromX /*float*/, p1FromY /*float*/, p2FromX /*float*/, p2FromY /*float*/, p3FromX /*float*/, p3FromY /*float*/, p4FromX /*float*/, p4FromY /*float*/) {
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var transform = PerspectiveTransform.quadrilateralToQuadrilateral(p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX, p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY);
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return this.sampleGridWithTransform(image, dimensionX, dimensionY, transform);
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};
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/*@Override*/
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DefaultGridSampler.prototype.sampleGridWithTransform = function (image, dimensionX /*int*/, dimensionY /*int*/, transform) {
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if (dimensionX <= 0 || dimensionY <= 0) {
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throw new NotFoundException();
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}
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var bits = new BitMatrix(dimensionX, dimensionY);
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var points = new Float32Array(2 * dimensionX);
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for (var y = 0; y < dimensionY; y++) {
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var max = points.length;
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var iValue = y + 0.5;
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for (var x = 0; x < max; x += 2) {
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points[x] = (x / 2) + 0.5;
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points[x + 1] = iValue;
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}
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transform.transformPoints(points);
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// Quick check to see if points transformed to something inside the image
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// sufficient to check the endpoints
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GridSampler.checkAndNudgePoints(image, points);
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try {
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for (var x = 0; x < max; x += 2) {
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if (image.get(Math.floor(points[x]), Math.floor(points[x + 1]))) {
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// Black(-ish) pixel
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bits.set(x / 2, y);
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}
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}
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}
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catch (aioobe /*: ArrayIndexOutOfBoundsException*/) {
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// This feels wrong, but, sometimes if the finder patterns are misidentified, the resulting
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// transform gets "twisted" such that it maps a straight line of points to a set of points
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// whose endpoints are in bounds, but others are not. There is probably some mathematical
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// way to detect this about the transformation that I don't know yet.
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// This results in an ugly runtime exception despite our clever checks above -- can't have
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// that. We could check each point's coordinates but that feels duplicative. We settle for
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// catching and wrapping ArrayIndexOutOfBoundsException.
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throw new NotFoundException();
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}
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}
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return bits;
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};
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return DefaultGridSampler;
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}(GridSampler));
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export default DefaultGridSampler;
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