forked from PeculiarVentures/js-zxing-pdf417
/
ResultPoint.js
78 lines (73 loc) · 2.62 KB
/
ResultPoint.js
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//
// Ported to JavaScript by Patrizio Bruno 2015
//
// desertconsulting@gmail.com, https://github.com/PeculiarVentures/idscanjs
//
//
// Copyright 2007 ZXing authors
//
// 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.
///
ZXing.ResultPoint = function (x, y) {
this.x = 0;
this.y = 0;
this.x = x;
this.y = y;
};
ZXing.ResultPoint.prototype.Equals = function (other) {
var otherPoint = other instanceof ZXing.ResultPoint ? other : null;
if (!otherPoint)
return false;
return this.x == otherPoint.x && this.y == otherPoint.y;
};
ZXing.ResultPoint.prototype.toString = function () {
var result = "(" + this.x + ", " + this.y + ")";
return result;
};
ZXing.ResultPoint.orderBestPatterns = function (patterns) {
var zeroOneDistance = ZXing.ResultPoint.distance(patterns[0], patterns[1]);
var oneTwoDistance = ZXing.ResultPoint.distance(patterns[1], patterns[2]);
var zeroTwoDistance = ZXing.ResultPoint.distance(patterns[0], patterns[2]);
var pointA, pointB, pointC;
if (oneTwoDistance >= zeroOneDistance && oneTwoDistance >= zeroTwoDistance) {
pointB = patterns[0];
pointA = patterns[1];
pointC = patterns[2];
}
else if (zeroTwoDistance >= oneTwoDistance && zeroTwoDistance >= zeroOneDistance) {
pointB = patterns[1];
pointA = patterns[0];
pointC = patterns[2];
}
else {
pointB = patterns[2];
pointA = patterns[0];
pointC = patterns[1];
}
if (ZXing.ResultPoint.crossProductZ(pointA, pointB, pointC) < 0) {
var temp = pointA;
pointA = pointC;
pointC = temp;
}
patterns[0] = pointA;
patterns[1] = pointB;
patterns[2] = pointC;
};
ZXing.ResultPoint.distance = function (pattern1, pattern2) {
return ZXing.Common.Detector.MathUtils.distance(pattern1.x, pattern1.y, pattern2.x, pattern2.y);
};
ZXing.ResultPoint.crossProductZ = function (pointA, pointB, pointC) {
var bX = pointB.x;
var bY = pointB.y;
return ((pointC.x - bX) * (pointA.y - bY)) - ((pointC.y - bY) * (pointA.x - bX));
};