%PDF-
%PDF-
Mini Shell
Mini Shell
/**
* @module echarts/core/BoundingRect
*/
define(function(require) {
'use strict';
var vec2 = require('./vector');
var matrix = require('./matrix');
var v2ApplyTransform = vec2.applyTransform;
var mathMin = Math.min;
var mathAbs = Math.abs;
var mathMax = Math.max;
/**
* @alias module:echarts/core/BoundingRect
*/
function BoundingRect(x, y, width, height) {
/**
* @type {number}
*/
this.x = x;
/**
* @type {number}
*/
this.y = y;
/**
* @type {number}
*/
this.width = width;
/**
* @type {number}
*/
this.height = height;
}
BoundingRect.prototype = {
constructor: BoundingRect,
/**
* @param {module:echarts/core/BoundingRect} other
*/
union: function (other) {
var x = mathMin(other.x, this.x);
var y = mathMin(other.y, this.y);
this.width = mathMax(
other.x + other.width,
this.x + this.width
) - x;
this.height = mathMax(
other.y + other.height,
this.y + this.height
) - y;
this.x = x;
this.y = y;
},
/**
* @param {Array.<number>} m
* @methods
*/
applyTransform: (function () {
var min = [];
var max = [];
return function (m) {
// In case usage like this
// el.getBoundingRect().applyTransform(el.transform)
// And element has no transform
if (!m) {
return;
}
min[0] = this.x;
min[1] = this.y;
max[0] = this.x + this.width;
max[1] = this.y + this.height;
v2ApplyTransform(min, min, m);
v2ApplyTransform(max, max, m);
this.x = mathMin(min[0], max[0]);
this.y = mathMin(min[1], max[1]);
this.width = mathAbs(max[0] - min[0]);
this.height = mathAbs(max[1] - min[1]);
};
})(),
/**
* Calculate matrix of transforming from self to target rect
* @param {module:zrender/core/BoundingRect} b
* @return {Array.<number>}
*/
calculateTransform: function (b) {
var a = this;
var sx = b.width / a.width;
var sy = b.height / a.height;
var m = matrix.create();
// 矩阵右乘
matrix.translate(m, m, [-a.x, -a.y]);
matrix.scale(m, m, [sx, sy]);
matrix.translate(m, m, [b.x, b.y]);
return m;
},
/**
* @param {(module:echarts/core/BoundingRect|Object)} b
* @return {boolean}
*/
intersect: function (b) {
var a = this;
var ax0 = a.x;
var ax1 = a.x + a.width;
var ay0 = a.y;
var ay1 = a.y + a.height;
var bx0 = b.x;
var bx1 = b.x + b.width;
var by0 = b.y;
var by1 = b.y + b.height;
return ! (ax1 < bx0 || bx1 < ax0 || ay1 < by0 || by1 < ay0);
},
contain: function (x, y) {
var rect = this;
return x >= rect.x
&& x <= (rect.x + rect.width)
&& y >= rect.y
&& y <= (rect.y + rect.height);
},
/**
* @return {module:echarts/core/BoundingRect}
*/
clone: function () {
return new BoundingRect(this.x, this.y, this.width, this.height);
},
/**
* Copy from another rect
*/
copy: function (other) {
this.x = other.x;
this.y = other.y;
this.width = other.width;
this.height = other.height;
}
};
return BoundingRect;
});
Zerion Mini Shell 1.0