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32 lines
738 B
32 lines
738 B
5 years ago
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function Linear(context) {
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this._context = context;
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}
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Linear.prototype = {
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areaStart: function() {
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this._line = 0;
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},
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areaEnd: function() {
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this._line = NaN;
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},
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lineStart: function() {
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this._point = 0;
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},
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lineEnd: function() {
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if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
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this._line = 1 - this._line;
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},
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point: function(x, y) {
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x = +x, y = +y;
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switch (this._point) {
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case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
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case 1: this._point = 2; // proceed
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default: this._context.lineTo(x, y); break;
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}
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}
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};
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export default function(context) {
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return new Linear(context);
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}
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