132 lines
4.1 KiB
Java
132 lines
4.1 KiB
Java
import { getSectorPath } from './graphics';
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import { isBetween } from './helper';
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/**
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* @ignore
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* Gets x dimension length
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* @param coordinate
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* @returns x dimension length
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*/
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export function getXDimensionLength(coordinate) {
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if (coordinate.isPolar && !coordinate.isTransposed) {
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// 极坐标系下 width 为弧长
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return (coordinate.endAngle - coordinate.startAngle) * coordinate.getRadius();
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}
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// 直角坐标系
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var start = coordinate.convert({ x: 0, y: 0 });
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var end = coordinate.convert({ x: 1, y: 0 });
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// 坐标系有可能发生 transpose 等变换，所有通过两点之间的距离进行计算
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return Math.sqrt(Math.pow(end.x - start.x, 2) + Math.pow(end.y - start.y, 2));
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}
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/**
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* @ignore
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* Determines whether full circle is
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* @param coordinate
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* @returns true if full circle
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*/
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export function isFullCircle(coordinate) {
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if (coordinate.isPolar) {
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var startAngle = coordinate.startAngle, endAngle = coordinate.endAngle;
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return endAngle - startAngle === Math.PI * 2;
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}
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return false;
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}
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/**
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* @ignore
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* 获取当前点到坐标系圆心的距离
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* @param coordinate 坐标系
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* @param point 当前点
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* @returns distance to center
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*/
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export function getDistanceToCenter(coordinate, point) {
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var center = coordinate.getCenter();
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return Math.sqrt(Math.pow((point.x - center.x), 2) + Math.pow((point.y - center.y), 2));
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}
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/**
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* @ignore
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* 坐标点是否在坐标系中
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* @param coordinate
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* @param point
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*/
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export function isPointInCoordinate(coordinate, point) {
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var result = false;
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if (coordinate) {
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if (coordinate.type === 'theta') {
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var start = coordinate.start, end = coordinate.end;
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result = isBetween(point.x, start.x, end.x) && isBetween(point.y, start.y, end.y);
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}
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else {
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var invertPoint = coordinate.invert(point);
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result = isBetween(invertPoint.x, 0, 1) && isBetween(invertPoint.y, 0, 1);
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}
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}
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return result;
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}
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/**
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* @ignore
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* 获取点到圆心的连线与水平方向的夹角
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*/
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export function getAngleByPoint(coordinate, point) {
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var center = coordinate.getCenter();
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return Math.atan2(point.y - center.y, point.x - center.x);
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}
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/**
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* @ignore
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* 获取同坐标系范围相同的剪切区域
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* @param coordinate
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* @returns
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*/
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export function getCoordinateClipCfg(coordinate, margin) {
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if (margin === void 0) { margin = 0; }
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var start = coordinate.start, end = coordinate.end;
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var width = coordinate.getWidth();
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var height = coordinate.getHeight();
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if (coordinate.isPolar) {
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var startAngle_1 = coordinate.startAngle, endAngle_1 = coordinate.endAngle;
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var center_1 = coordinate.getCenter();
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var radius_1 = coordinate.getRadius();
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return {
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type: 'path',
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startState: {
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path: getSectorPath(center_1.x, center_1.y, radius_1 + margin, startAngle_1, startAngle_1),
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},
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endState: function (ratio) {
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var diff = (endAngle_1 - startAngle_1) * ratio + startAngle_1;
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var path = getSectorPath(center_1.x, center_1.y, radius_1 + margin, startAngle_1, diff);
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return {
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path: path,
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};
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},
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attrs: {
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path: getSectorPath(center_1.x, center_1.y, radius_1 + margin, startAngle_1, endAngle_1),
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},
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};
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}
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var endState;
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if (coordinate.isTransposed) {
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endState = {
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height: height + margin * 2,
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};
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}
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else {
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endState = {
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width: width + margin * 2,
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};
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}
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return {
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type: 'rect',
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startState: {
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x: start.x - margin,
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y: end.y - margin,
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width: coordinate.isTransposed ? width + margin * 2 : 0,
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height: coordinate.isTransposed ? 0 : height + margin * 2,
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},
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endState: endState,
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attrs: {
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x: start.x - margin,
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y: end.y - margin,
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width: width + margin * 2,
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height: height + margin * 2,
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},
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};
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}
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//# sourceMappingURL=coordinate.js.map |