26 lines
734 B
JavaScript
26 lines
734 B
JavaScript
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import {sqrt} from "../math.js";
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const c = -0.5;
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const s = sqrt(3) / 2;
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const k = 1 / sqrt(12);
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const a = (k / 2 + 1) * 3;
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export default {
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draw(context, size) {
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const r = sqrt(size / a);
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const x0 = r / 2, y0 = r * k;
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const x1 = x0, y1 = r * k + r;
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const x2 = -x1, y2 = y1;
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context.moveTo(x0, y0);
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context.lineTo(x1, y1);
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context.lineTo(x2, y2);
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context.lineTo(c * x0 - s * y0, s * x0 + c * y0);
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context.lineTo(c * x1 - s * y1, s * x1 + c * y1);
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context.lineTo(c * x2 - s * y2, s * x2 + c * y2);
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context.lineTo(c * x0 + s * y0, c * y0 - s * x0);
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context.lineTo(c * x1 + s * y1, c * y1 - s * x1);
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context.lineTo(c * x2 + s * y2, c * y2 - s * x2);
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context.closePath();
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}
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};
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