100 lines
4.3 KiB
JavaScript
100 lines
4.3 KiB
JavaScript
/*
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* (c) Copyright Ascensio System SIA 2010-2015
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
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* EU, LV-1021.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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"use strict";
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var double_eps = 1e-05;
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var hit_error_eps = 0.5;
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function HitInLine(context, px, py, x0, y0, x1, y1) {
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var tx, ty, dx, dy, d;
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tx = x1 - x0;
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ty = y1 - y0;
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if (Math.abs(tx * tx + ty * ty) < double_eps) {
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return HitInLine(context, px, py, x0, y0, x1 + hit_error_eps, y1 + hit_error_eps);
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}
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d = 1.5 / Math.sqrt(tx * tx + ty * ty);
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if (global_mouseEvent !== null && typeof global_mouseEvent === "object" && typeof global_mouseEvent.KoefPixToMM === "number" && !isNaN(global_mouseEvent.KoefPixToMM)) {
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d *= global_mouseEvent.KoefPixToMM;
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}
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dx = -ty * d;
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dy = tx * d;
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context.beginPath();
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context.moveTo(x0, y0);
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context.lineTo(x0 + dx, y0 + dy);
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context.lineTo(x1 + dx, y1 + dy);
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context.lineTo(x1 - dx, y1 - dy);
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context.lineTo(x0 - dx, y0 - dy);
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context.closePath();
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return context.isPointInPath(px, py);
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}
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function HitInBezier4(context, px, py, x0, y0, x1, y1, x2, y2, x3, y3) {
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var tx, ty, dx, dy, d;
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tx = x3 - x0;
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ty = y3 - y0;
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if (Math.abs(tx * tx + ty * ty) < double_eps) {
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return HitInLine(context, px, py, x0, y0, x1, y1, x2, y2, x3 + hit_error_eps, y3 + hit_error_eps);
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}
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d = 1.5 / Math.sqrt(tx * tx + ty * ty);
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if (global_mouseEvent !== null && typeof global_mouseEvent === "object" && typeof global_mouseEvent.KoefPixToMM === "number" && !isNaN(global_mouseEvent.KoefPixToMM)) {
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d *= global_mouseEvent.KoefPixToMM;
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}
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dx = -ty * d;
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dy = tx * d;
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context.beginPath();
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context.moveTo(x0, y0);
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context.lineTo(x0 + dx, y0 + dy);
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context.bezierCurveTo(x1 + dx, y1 + dy, x2 + dx, y2 + dy, x3 + dx, y3 + dy);
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context.lineTo(x3 - dx, y3 - dy);
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context.bezierCurveTo(x2 - dx, y2 - dy, x1 - dx, y1 - dy, x0 - dx, y0 - dy);
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context.closePath();
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return context.isPointInPath(px, py);
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}
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function HitInBezier3(context, px, py, x0, y0, x1, y1, x2, y2) {
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var tx, ty, dx, dy, d;
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tx = x2 - x0;
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ty = y2 - y0;
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if (Math.abs(tx * tx + ty * ty) < double_eps) {
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return HitInLine(context, px, py, x0, y0, x1, y1, x2 + hit_error_eps, y2 + hit_error_eps);
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}
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d = 1.5 / Math.sqrt(tx * tx + ty * ty);
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if (global_mouseEvent !== null && typeof global_mouseEvent === "object" && typeof global_mouseEvent.KoefPixToMM === "number" && !isNaN(global_mouseEvent.KoefPixToMM)) {
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d *= global_mouseEvent.KoefPixToMM;
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}
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dx = -ty * d;
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dy = tx * d;
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context.beginPath();
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context.moveTo(x0, y0);
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context.lineTo(x0 + dx, y0 + dy);
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context.quadraticCurveTo(x1 + dx, y1 + dy, x2 + dx, y2 + dy);
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context.lineTo(x2 - dx, y2 - dy);
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context.quadraticCurveTo(x1 - dx, y1 - dy, x0 - dx, y0 - dy);
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context.closePath();
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return context.isPointInPath(px, py);
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} |