META-INF.assets.rjzjh.echarts.src.coord.geo.Region.js Maven / Gradle / Ivy
/**
* @module echarts/coord/geo/Region
*/
define(function (require) {
var polygonContain = require('zrender/contain/polygon');
var BoundingRect = require('zrender/core/BoundingRect');
var bbox = require('zrender/core/bbox');
var vec2 = require('zrender/core/vector');
/**
* @param {string} name
* @param {Array} contours
* @param {Array.} cp
*/
function Region(name, contours, cp) {
/**
* @type {string}
* @readOnly
*/
this.name = name;
/**
* @type {Array.}
* @readOnly
*/
this.contours = contours;
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.}
*/
this.center = cp;
}
Region.prototype = {
constructor: Region,
/**
* @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 contours = this.contours;
for (var i = 0; i < contours.length; i++) {
bbox.fromPoints(contours[i], 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 {} coord
* @return {boolean}
*/
contain: function (coord) {
var rect = this.getBoundingRect();
var contours = this.contours;
if (rect.contain(coord[0], coord[1])) {
for (var i = 0, len = contours.length; i < len; i++) {
if (polygonContain.contain(contours[i], coord[0], coord[1])) {
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 contours = this.contours;
for (var i = 0; i < contours.length; i++) {
for (var p = 0; p < contours[i].length; p++) {
vec2.applyTransform(contours[i][p], contours[i][p], transform);
}
}
rect = this._rect;
rect.copy(target);
// Update center
this.center = [
rect.x + rect.width / 2,
rect.y + rect.height / 2
];
}
};
return Region;
});