lepu-test-platform-web/node_modules/echarts/lib/coord/geo/Region.js

210 lines
5.5 KiB
JavaScript

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
var BoundingRect = require("zrender/lib/core/BoundingRect");
var bbox = require("zrender/lib/core/bbox");
var vec2 = require("zrender/lib/core/vector");
var polygonContain = require("zrender/lib/contain/polygon");
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/**
* @module echarts/coord/geo/Region
*/
/**
* @param {string|Region} name
* @param {Array} geometries
* @param {Array.<number>} cp
*/
function Region(name, geometries, cp) {
/**
* @type {string}
* @readOnly
*/
this.name = name;
/**
* @type {Array.<Array>}
* @readOnly
*/
this.geometries = geometries;
if (!cp) {
var rect = this.getBoundingRect();
cp = [rect.x + rect.width / 2, rect.y + rect.height / 2];
} else {
cp = [cp[0], cp[1]];
}
/**
* @type {Array.<number>}
*/
this.center = cp;
}
Region.prototype = {
constructor: Region,
properties: null,
/**
* @return {module:zrender/core/BoundingRect}
*/
getBoundingRect: function () {
var rect = this._rect;
if (rect) {
return rect;
}
var MAX_NUMBER = Number.MAX_VALUE;
var min = [MAX_NUMBER, MAX_NUMBER];
var max = [-MAX_NUMBER, -MAX_NUMBER];
var min2 = [];
var max2 = [];
var geometries = this.geometries;
for (var i = 0; i < geometries.length; i++) {
// Only support polygon
if (geometries[i].type !== 'polygon') {
continue;
} // Doesn't consider hole
var exterior = geometries[i].exterior;
bbox.fromPoints(exterior, min2, max2);
vec2.min(min, min, min2);
vec2.max(max, max, max2);
} // No data
if (i === 0) {
min[0] = min[1] = max[0] = max[1] = 0;
}
return this._rect = new BoundingRect(min[0], min[1], max[0] - min[0], max[1] - min[1]);
},
/**
* @param {<Array.<number>} coord
* @return {boolean}
*/
contain: function (coord) {
var rect = this.getBoundingRect();
var geometries = this.geometries;
if (!rect.contain(coord[0], coord[1])) {
return false;
}
loopGeo: for (var i = 0, len = geometries.length; i < len; i++) {
// Only support polygon.
if (geometries[i].type !== 'polygon') {
continue;
}
var exterior = geometries[i].exterior;
var interiors = geometries[i].interiors;
if (polygonContain.contain(exterior, coord[0], coord[1])) {
// Not in the region if point is in the hole.
for (var k = 0; k < (interiors ? interiors.length : 0); k++) {
if (polygonContain.contain(interiors[k])) {
continue loopGeo;
}
}
return true;
}
}
return false;
},
transformTo: function (x, y, width, height) {
var rect = this.getBoundingRect();
var aspect = rect.width / rect.height;
if (!width) {
width = aspect * height;
} else if (!height) {
height = width / aspect;
}
var target = new BoundingRect(x, y, width, height);
var transform = rect.calculateTransform(target);
var geometries = this.geometries;
for (var i = 0; i < geometries.length; i++) {
// Only support polygon.
if (geometries[i].type !== 'polygon') {
continue;
}
var exterior = geometries[i].exterior;
var interiors = geometries[i].interiors;
for (var p = 0; p < exterior.length; p++) {
vec2.applyTransform(exterior[p], exterior[p], transform);
}
for (var h = 0; h < (interiors ? interiors.length : 0); h++) {
for (var p = 0; p < interiors[h].length; p++) {
vec2.applyTransform(interiors[h][p], interiors[h][p], transform);
}
}
}
rect = this._rect;
rect.copy(target); // Update center
this.center = [rect.x + rect.width / 2, rect.y + rect.height / 2];
},
cloneShallow: function (name) {
name == null && (name = this.name);
var newRegion = new Region(name, this.geometries, this.center);
newRegion._rect = this._rect;
newRegion.transformTo = null; // Simply avoid to be called.
return newRegion;
}
};
var _default = Region;
module.exports = _default;