Sha256: 5704a5889c318e005a2625b39c3614825fad62fc1a0da02a36fd662ff7eba0a1
Contents?: true
Size: 990 Bytes
Versions: 8
Compression:
Stored size: 990 Bytes
Contents
/**
* echarts坐标处理方法
*
* @author Neil (杨骥, 511415343@qq.com)
*/
define(
function (require) {
var zrMath = require('zrender/tool/math');
/**
* 极坐标转直角坐标
*
* @param {number} 半径
* @param {number} 角度
*
* @return {Array.<number>} 直角坐标[x,y]
*/
function polar2cartesian(r, theta) {
return [r * zrMath.sin(theta), r*zrMath.cos(theta)];
}
/**
* 直角坐标转极坐标
*
* @param {number} 横坐标
* @param {number} 纵坐标
*
* @return {Array.<number>} 极坐标[r,theta]
*/
function cartesian2polar(x, y) {
return [Math.sqrt(x * x + y * y), Math.atan(y / x)];
}
return {
polar2cartesian : polar2cartesian,
cartesian2polar : cartesian2polar
};
}
);
Version data entries
8 entries across 4 versions & 1 rubygems