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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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|
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/**
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* AUTO-GENERATED FILE. DO NOT MODIFY.
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*/
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import { Point, Path, Polyline } from '../util/graphic.js';
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import PathProxy from 'zrender/lib/core/PathProxy.js';
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import { normalizeRadian } from 'zrender/lib/contain/util.js';
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import { cubicProjectPoint, quadraticProjectPoint } from 'zrender/lib/core/curve.js';
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import { defaults, retrieve2 } from 'zrender/lib/core/util.js';
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import { invert } from 'zrender/lib/core/matrix.js';
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import * as vector from 'zrender/lib/core/vector.js';
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import { DISPLAY_STATES, SPECIAL_STATES } from '../util/states.js';
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var PI2 = Math.PI * 2;
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var CMD = PathProxy.CMD;
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var DEFAULT_SEARCH_SPACE = ['top', 'right', 'bottom', 'left'];
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function getCandidateAnchor(pos, distance, rect, outPt, outDir) {
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var width = rect.width;
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var height = rect.height;
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switch (pos) {
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case 'top':
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outPt.set(rect.x + width / 2, rect.y - distance);
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outDir.set(0, -1);
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break;
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case 'bottom':
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outPt.set(rect.x + width / 2, rect.y + height + distance);
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outDir.set(0, 1);
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break;
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case 'left':
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outPt.set(rect.x - distance, rect.y + height / 2);
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outDir.set(-1, 0);
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break;
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case 'right':
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outPt.set(rect.x + width + distance, rect.y + height / 2);
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outDir.set(1, 0);
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break;
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}
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}
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function projectPointToArc(cx, cy, r, startAngle, endAngle, anticlockwise, x, y, out) {
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x -= cx;
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y -= cy;
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var d = Math.sqrt(x * x + y * y);
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x /= d;
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y /= d;
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// Intersect point.
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var ox = x * r + cx;
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var oy = y * r + cy;
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if (Math.abs(startAngle - endAngle) % PI2 < 1e-4) {
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// Is a circle
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out[0] = ox;
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out[1] = oy;
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return d - r;
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}
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if (anticlockwise) {
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var tmp = startAngle;
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startAngle = normalizeRadian(endAngle);
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endAngle = normalizeRadian(tmp);
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} else {
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startAngle = normalizeRadian(startAngle);
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endAngle = normalizeRadian(endAngle);
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}
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if (startAngle > endAngle) {
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endAngle += PI2;
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}
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var angle = Math.atan2(y, x);
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if (angle < 0) {
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angle += PI2;
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}
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if (angle >= startAngle && angle <= endAngle || angle + PI2 >= startAngle && angle + PI2 <= endAngle) {
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// Project point is on the arc.
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out[0] = ox;
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out[1] = oy;
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return d - r;
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}
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var x1 = r * Math.cos(startAngle) + cx;
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var y1 = r * Math.sin(startAngle) + cy;
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var x2 = r * Math.cos(endAngle) + cx;
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var y2 = r * Math.sin(endAngle) + cy;
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var d1 = (x1 - x) * (x1 - x) + (y1 - y) * (y1 - y);
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var d2 = (x2 - x) * (x2 - x) + (y2 - y) * (y2 - y);
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if (d1 < d2) {
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out[0] = x1;
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out[1] = y1;
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return Math.sqrt(d1);
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} else {
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out[0] = x2;
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out[1] = y2;
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return Math.sqrt(d2);
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}
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}
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function projectPointToLine(x1, y1, x2, y2, x, y, out, limitToEnds) {
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var dx = x - x1;
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var dy = y - y1;
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var dx1 = x2 - x1;
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var dy1 = y2 - y1;
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var lineLen = Math.sqrt(dx1 * dx1 + dy1 * dy1);
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dx1 /= lineLen;
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dy1 /= lineLen;
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// dot product
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var projectedLen = dx * dx1 + dy * dy1;
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var t = projectedLen / lineLen;
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if (limitToEnds) {
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t = Math.min(Math.max(t, 0), 1);
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}
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t *= lineLen;
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var ox = out[0] = x1 + t * dx1;
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var oy = out[1] = y1 + t * dy1;
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return Math.sqrt((ox - x) * (ox - x) + (oy - y) * (oy - y));
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}
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function projectPointToRect(x1, y1, width, height, x, y, out) {
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if (width < 0) {
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x1 = x1 + width;
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width = -width;
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}
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if (height < 0) {
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y1 = y1 + height;
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height = -height;
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}
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var x2 = x1 + width;
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var y2 = y1 + height;
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var ox = out[0] = Math.min(Math.max(x, x1), x2);
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var oy = out[1] = Math.min(Math.max(y, y1), y2);
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return Math.sqrt((ox - x) * (ox - x) + (oy - y) * (oy - y));
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}
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var tmpPt = [];
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function nearestPointOnRect(pt, rect, out) {
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var dist = projectPointToRect(rect.x, rect.y, rect.width, rect.height, pt.x, pt.y, tmpPt);
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out.set(tmpPt[0], tmpPt[1]);
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return dist;
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}
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/**
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* Calculate min distance corresponding point.
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* This method won't evaluate if point is in the path.
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*/
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function nearestPointOnPath(pt, path, out) {
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var xi = 0;
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var yi = 0;
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var x0 = 0;
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var y0 = 0;
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var x1;
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var y1;
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var minDist = Infinity;
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var data = path.data;
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var x = pt.x;
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var y = pt.y;
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for (var i = 0; i < data.length;) {
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var cmd = data[i++];
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if (i === 1) {
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xi = data[i];
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yi = data[i + 1];
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x0 = xi;
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y0 = yi;
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}
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var d = minDist;
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switch (cmd) {
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case CMD.M:
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// moveTo 命令重新创建一个新的 subpath, 并且更新新的起点
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// 在 closePath 的时候使用
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x0 = data[i++];
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y0 = data[i++];
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xi = x0;
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yi = y0;
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break;
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case CMD.L:
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d = projectPointToLine(xi, yi, data[i], data[i + 1], x, y, tmpPt, true);
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xi = data[i++];
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yi = data[i++];
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break;
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case CMD.C:
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d = cubicProjectPoint(xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1], x, y, tmpPt);
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xi = data[i++];
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yi = data[i++];
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break;
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case CMD.Q:
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d = quadraticProjectPoint(xi, yi, data[i++], data[i++], data[i], data[i + 1], x, y, tmpPt);
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xi = data[i++];
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yi = data[i++];
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break;
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case CMD.A:
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// TODO Arc 判断的开销比较大
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var cx = data[i++];
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var cy = data[i++];
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var rx = data[i++];
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var ry = data[i++];
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var theta = data[i++];
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var dTheta = data[i++];
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// TODO Arc 旋转
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i += 1;
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var anticlockwise = !!(1 - data[i++]);
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x1 = Math.cos(theta) * rx + cx;
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y1 = Math.sin(theta) * ry + cy;
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// 不是直接使用 arc 命令
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if (i <= 1) {
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// 第一个命令起点还未定义
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x0 = x1;
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y0 = y1;
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}
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// zr 使用scale来模拟椭圆, 这里也对x做一定的缩放
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var _x = (x - cx) * ry / rx + cx;
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d = projectPointToArc(cx, cy, ry, theta, theta + dTheta, anticlockwise, _x, y, tmpPt);
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xi = Math.cos(theta + dTheta) * rx + cx;
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yi = Math.sin(theta + dTheta) * ry + cy;
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break;
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case CMD.R:
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x0 = xi = data[i++];
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y0 = yi = data[i++];
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var width = data[i++];
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var height = data[i++];
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d = projectPointToRect(x0, y0, width, height, x, y, tmpPt);
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break;
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case CMD.Z:
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d = projectPointToLine(xi, yi, x0, y0, x, y, tmpPt, true);
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xi = x0;
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yi = y0;
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break;
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}
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if (d < minDist) {
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minDist = d;
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out.set(tmpPt[0], tmpPt[1]);
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}
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}
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return minDist;
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}
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// Temporal variable for intermediate usage.
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var pt0 = new Point();
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var pt1 = new Point();
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var pt2 = new Point();
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var dir = new Point();
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var dir2 = new Point();
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/**
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* Calculate a proper guide line based on the label position and graphic element definition
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* @param label
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* @param labelRect
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* @param target
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* @param targetRect
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*/
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export function updateLabelLinePoints(target, labelLineModel) {
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if (!target) {
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return;
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}
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var labelLine = target.getTextGuideLine();
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var label = target.getTextContent();
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// Needs to create text guide in each charts.
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if (!(label && labelLine)) {
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return;
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}
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var labelGuideConfig = target.textGuideLineConfig || {};
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var points = [[0, 0], [0, 0], [0, 0]];
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var searchSpace = labelGuideConfig.candidates || DEFAULT_SEARCH_SPACE;
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var labelRect = label.getBoundingRect().clone();
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labelRect.applyTransform(label.getComputedTransform());
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var minDist = Infinity;
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var anchorPoint = labelGuideConfig.anchor;
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var targetTransform = target.getComputedTransform();
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var targetInversedTransform = targetTransform && invert([], targetTransform);
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var len = labelLineModel.get('length2') || 0;
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if (anchorPoint) {
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pt2.copy(anchorPoint);
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}
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for (var i = 0; i < searchSpace.length; i++) {
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var candidate = searchSpace[i];
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getCandidateAnchor(candidate, 0, labelRect, pt0, dir);
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Point.scaleAndAdd(pt1, pt0, dir, len);
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// Transform to target coord space.
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pt1.transform(targetInversedTransform);
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// Note: getBoundingRect will ensure the `path` being created.
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var boundingRect = target.getBoundingRect();
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var dist = anchorPoint ? anchorPoint.distance(pt1) : target instanceof Path ? nearestPointOnPath(pt1, target.path, pt2) : nearestPointOnRect(pt1, boundingRect, pt2);
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// TODO pt2 is in the path
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if (dist < minDist) {
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minDist = dist;
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// Transform back to global space.
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pt1.transform(targetTransform);
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pt2.transform(targetTransform);
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pt2.toArray(points[0]);
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pt1.toArray(points[1]);
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pt0.toArray(points[2]);
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}
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}
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limitTurnAngle(points, labelLineModel.get('minTurnAngle'));
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labelLine.setShape({
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points: points
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});
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}
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// Temporal variable for the limitTurnAngle function
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var tmpArr = [];
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var tmpProjPoint = new Point();
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/**
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* Reduce the line segment attached to the label to limit the turn angle between two segments.
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* @param linePoints
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* @param minTurnAngle Radian of minimum turn angle. 0 - 180
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*/
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export function limitTurnAngle(linePoints, minTurnAngle) {
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if (!(minTurnAngle <= 180 && minTurnAngle > 0)) {
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return;
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}
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minTurnAngle = minTurnAngle / 180 * Math.PI;
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// The line points can be
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// /pt1----pt2 (label)
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// /
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// pt0/
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pt0.fromArray(linePoints[0]);
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pt1.fromArray(linePoints[1]);
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pt2.fromArray(linePoints[2]);
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Point.sub(dir, pt0, pt1);
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Point.sub(dir2, pt2, pt1);
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var len1 = dir.len();
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var len2 = dir2.len();
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if (len1 < 1e-3 || len2 < 1e-3) {
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return;
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}
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dir.scale(1 / len1);
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dir2.scale(1 / len2);
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var angleCos = dir.dot(dir2);
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var minTurnAngleCos = Math.cos(minTurnAngle);
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if (minTurnAngleCos < angleCos) {
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// Smaller than minTurnAngle
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// Calculate project point of pt0 on pt1-pt2
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var d = projectPointToLine(pt1.x, pt1.y, pt2.x, pt2.y, pt0.x, pt0.y, tmpArr, false);
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tmpProjPoint.fromArray(tmpArr);
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// Calculate new projected length with limited minTurnAngle and get the new connect point
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tmpProjPoint.scaleAndAdd(dir2, d / Math.tan(Math.PI - minTurnAngle));
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// Limit the new calculated connect point between pt1 and pt2.
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var t = pt2.x !== pt1.x ? (tmpProjPoint.x - pt1.x) / (pt2.x - pt1.x) : (tmpProjPoint.y - pt1.y) / (pt2.y - pt1.y);
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if (isNaN(t)) {
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return;
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}
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if (t < 0) {
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Point.copy(tmpProjPoint, pt1);
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} else if (t > 1) {
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Point.copy(tmpProjPoint, pt2);
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}
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tmpProjPoint.toArray(linePoints[1]);
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}
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}
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/**
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* Limit the angle of line and the surface
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* @param maxSurfaceAngle Radian of minimum turn angle. 0 - 180. 0 is same direction to normal. 180 is opposite
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*/
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export function limitSurfaceAngle(linePoints, surfaceNormal, maxSurfaceAngle) {
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if (!(maxSurfaceAngle <= 180 && maxSurfaceAngle > 0)) {
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return;
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}
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maxSurfaceAngle = maxSurfaceAngle / 180 * Math.PI;
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pt0.fromArray(linePoints[0]);
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pt1.fromArray(linePoints[1]);
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pt2.fromArray(linePoints[2]);
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Point.sub(dir, pt1, pt0);
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Point.sub(dir2, pt2, pt1);
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var len1 = dir.len();
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var len2 = dir2.len();
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if (len1 < 1e-3 || len2 < 1e-3) {
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return;
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}
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dir.scale(1 / len1);
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dir2.scale(1 / len2);
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var angleCos = dir.dot(surfaceNormal);
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var maxSurfaceAngleCos = Math.cos(maxSurfaceAngle);
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if (angleCos < maxSurfaceAngleCos) {
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// Calculate project point of pt0 on pt1-pt2
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var d = projectPointToLine(pt1.x, pt1.y, pt2.x, pt2.y, pt0.x, pt0.y, tmpArr, false);
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tmpProjPoint.fromArray(tmpArr);
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var HALF_PI = Math.PI / 2;
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var angle2 = Math.acos(dir2.dot(surfaceNormal));
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var newAngle = HALF_PI + angle2 - maxSurfaceAngle;
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if (newAngle >= HALF_PI) {
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// parallel
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Point.copy(tmpProjPoint, pt2);
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} else {
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// Calculate new projected length with limited minTurnAngle and get the new connect point
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tmpProjPoint.scaleAndAdd(dir2, d / Math.tan(Math.PI / 2 - newAngle));
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// Limit the new calculated connect point between pt1 and pt2.
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var t = pt2.x !== pt1.x ? (tmpProjPoint.x - pt1.x) / (pt2.x - pt1.x) : (tmpProjPoint.y - pt1.y) / (pt2.y - pt1.y);
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if (isNaN(t)) {
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return;
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}
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if (t < 0) {
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Point.copy(tmpProjPoint, pt1);
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} else if (t > 1) {
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Point.copy(tmpProjPoint, pt2);
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}
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}
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tmpProjPoint.toArray(linePoints[1]);
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}
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}
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function setLabelLineState(labelLine, ignore, stateName, stateModel) {
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var isNormal = stateName === 'normal';
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var stateObj = isNormal ? labelLine : labelLine.ensureState(stateName);
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// Make sure display.
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stateObj.ignore = ignore;
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// Set smooth
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var smooth = stateModel.get('smooth');
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if (smooth && smooth === true) {
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smooth = 0.3;
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}
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stateObj.shape = stateObj.shape || {};
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if (smooth > 0) {
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stateObj.shape.smooth = smooth;
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}
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var styleObj = stateModel.getModel('lineStyle').getLineStyle();
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isNormal ? labelLine.useStyle(styleObj) : stateObj.style = styleObj;
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}
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function buildLabelLinePath(path, shape) {
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var smooth = shape.smooth;
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var points = shape.points;
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if (!points) {
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return;
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}
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path.moveTo(points[0][0], points[0][1]);
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if (smooth > 0 && points.length >= 3) {
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var len1 = vector.dist(points[0], points[1]);
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var len2 = vector.dist(points[1], points[2]);
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if (!len1 || !len2) {
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path.lineTo(points[1][0], points[1][1]);
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path.lineTo(points[2][0], points[2][1]);
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return;
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}
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var moveLen = Math.min(len1, len2) * smooth;
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var midPoint0 = vector.lerp([], points[1], points[0], moveLen / len1);
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var midPoint2 = vector.lerp([], points[1], points[2], moveLen / len2);
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var midPoint1 = vector.lerp([], midPoint0, midPoint2, 0.5);
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path.bezierCurveTo(midPoint0[0], midPoint0[1], midPoint0[0], midPoint0[1], midPoint1[0], midPoint1[1]);
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path.bezierCurveTo(midPoint2[0], midPoint2[1], midPoint2[0], midPoint2[1], points[2][0], points[2][1]);
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} else {
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for (var i = 1; i < points.length; i++) {
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path.lineTo(points[i][0], points[i][1]);
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}
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}
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}
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/**
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* Create a label line if necessary and set it's style.
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*/
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export function setLabelLineStyle(targetEl, statesModels, defaultStyle) {
|
var labelLine = targetEl.getTextGuideLine();
|
var label = targetEl.getTextContent();
|
if (!label) {
|
// Not show label line if there is no label.
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if (labelLine) {
|
targetEl.removeTextGuideLine();
|
}
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return;
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}
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var normalModel = statesModels.normal;
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var showNormal = normalModel.get('show');
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var labelIgnoreNormal = label.ignore;
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for (var i = 0; i < DISPLAY_STATES.length; i++) {
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var stateName = DISPLAY_STATES[i];
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var stateModel = statesModels[stateName];
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var isNormal = stateName === 'normal';
|
if (stateModel) {
|
var stateShow = stateModel.get('show');
|
var isLabelIgnored = isNormal ? labelIgnoreNormal : retrieve2(label.states[stateName] && label.states[stateName].ignore, labelIgnoreNormal);
|
if (isLabelIgnored // Not show when label is not shown in this state.
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|| !retrieve2(stateShow, showNormal) // Use normal state by default if not set.
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) {
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var stateObj = isNormal ? labelLine : labelLine && labelLine.states[stateName];
|
if (stateObj) {
|
stateObj.ignore = true;
|
}
|
if (!!labelLine) {
|
setLabelLineState(labelLine, true, stateName, stateModel);
|
}
|
continue;
|
}
|
// Create labelLine if not exists
|
if (!labelLine) {
|
labelLine = new Polyline();
|
targetEl.setTextGuideLine(labelLine);
|
// Reset state of normal because it's new created.
|
// NOTE: NORMAL should always been the first!
|
if (!isNormal && (labelIgnoreNormal || !showNormal)) {
|
setLabelLineState(labelLine, true, 'normal', statesModels.normal);
|
}
|
// Use same state proxy.
|
if (targetEl.stateProxy) {
|
labelLine.stateProxy = targetEl.stateProxy;
|
}
|
}
|
setLabelLineState(labelLine, false, stateName, stateModel);
|
}
|
}
|
if (labelLine) {
|
defaults(labelLine.style, defaultStyle);
|
// Not fill.
|
labelLine.style.fill = null;
|
var showAbove = normalModel.get('showAbove');
|
var labelLineConfig = targetEl.textGuideLineConfig = targetEl.textGuideLineConfig || {};
|
labelLineConfig.showAbove = showAbove || false;
|
// Custom the buildPath.
|
labelLine.buildPath = buildLabelLinePath;
|
}
|
}
|
export function getLabelLineStatesModels(itemModel, labelLineName) {
|
labelLineName = labelLineName || 'labelLine';
|
var statesModels = {
|
normal: itemModel.getModel(labelLineName)
|
};
|
for (var i = 0; i < SPECIAL_STATES.length; i++) {
|
var stateName = SPECIAL_STATES[i];
|
statesModels[stateName] = itemModel.getModel([stateName, labelLineName]);
|
}
|
return statesModels;
|
}
|
