| import {tau} from "../math.js"; |
| import noop from "../noop.js"; |
|
|
| export default function PathContext(context) { |
| this._context = context; |
| } |
|
|
| PathContext.prototype = { |
| _radius: 4.5, |
| pointRadius: function(_) { |
| return this._radius = _, this; |
| }, |
| polygonStart: function() { |
| this._line = 0; |
| }, |
| polygonEnd: function() { |
| this._line = NaN; |
| }, |
| lineStart: function() { |
| this._point = 0; |
| }, |
| lineEnd: function() { |
| if (this._line === 0) this._context.closePath(); |
| this._point = NaN; |
| }, |
| point: function(x, y) { |
| switch (this._point) { |
| case 0: { |
| this._context.moveTo(x, y); |
| this._point = 1; |
| break; |
| } |
| case 1: { |
| this._context.lineTo(x, y); |
| break; |
| } |
| default: { |
| this._context.moveTo(x + this._radius, y); |
| this._context.arc(x, y, this._radius, 0, tau); |
| break; |
| } |
| } |
| }, |
| result: noop |
| }; |
|
|
