59 wiersze
1.3 KiB
TypeScript
59 wiersze
1.3 KiB
TypeScript
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import { Bezier } from "../vendor/bezier-js";
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import { float } from "./util";
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export function pathToShapes(path: string): Bezier[][] {
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const parts = path.trim().split(" ");
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let x = 0;
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let y = 0;
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let i = 0;
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const shapes: Bezier[][] = [];
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let currShape: Bezier[] = [];
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const chomp = () => {
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if (i >= parts.length) {
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throw new Error(`Ran out of path parts!`);
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}
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const val = parts[i];
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i++;
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return val;
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};
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const finishCurrShape = () => {
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if (currShape.length) {
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shapes.push(currShape);
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currShape = [];
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}
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};
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while (i < parts.length) {
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const command = chomp();
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switch (command) {
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case "M":
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finishCurrShape();
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x = float(chomp());
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y = float(chomp());
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break;
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case "C":
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const x1 = float(chomp());
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const y1 = float(chomp());
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const x2 = float(chomp());
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const y2 = float(chomp());
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const endX = float(chomp());
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const endY = float(chomp());
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currShape.push(new Bezier(x, y, x1, y1, x2, y2, endX, endY));
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x = endX;
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y = endY;
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break;
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case "Z":
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finishCurrShape();
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break;
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default:
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throw new Error(`Unknown SVG path command: '${command}'`);
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}
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}
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finishCurrShape();
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return shapes;
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}
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