feat: added threlte & threejs implementations

src/lib/assets/vectors/github.svg

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+<svg width="98" height="96" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="M48.854 0C21.839 0 0 22 0 49.217c0 21.756 13.993 40.172 33.405 46.69 2.427.49 3.316-1.059 3.316-2.362 0-1.141-.08-5.052-.08-9.127-13.59 2.934-16.42-5.867-16.42-5.867-2.184-5.704-5.42-7.17-5.42-7.17-4.448-3.015.324-3.015.324-3.015 4.934.326 7.523 5.052 7.523 5.052 4.367 7.496 11.404 5.378 14.235 4.074.404-3.178 1.699-5.378 3.074-6.6-10.839-1.141-22.243-5.378-22.243-24.283 0-5.378 1.94-9.778 5.014-13.2-.485-1.222-2.184-6.275.486-13.038 0 0 4.125-1.304 13.426 5.052a46.97 46.97 0 0 1 12.214-1.63c4.125 0 8.33.571 12.213 1.63 9.302-6.356 13.427-5.052 13.427-5.052 2.67 6.763.97 11.816.485 13.038 3.155 3.422 5.015 7.822 5.015 13.2 0 18.905-11.404 23.06-22.324 24.283 1.78 1.548 3.316 4.481 3.316 9.126 0 6.6-.08 11.897-.08 13.526 0 1.304.89 2.853 3.316 2.364 19.412-6.52 33.405-24.935 33.405-46.691C97.707 22 75.788 0 48.854 0z" fill="#24292f"/></svg>

src/lib/components/gltf/Github3d.svelte

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+<!--
+Auto-generated by: https://github.com/threlte/threlte/tree/main/packages/gltf
+Command: npx @threlte/gltf@1.0.0-next.13 ./src/lib/assets/vectors/github.glb --transform
+-->
+
+<script>
+	import { Group } from 'three';
+	import { T, forwardEventHandlers } from '@threlte/core';
+	import { useGltf } from '@threlte/extras';
+	export const ref = new Group();
+
+	const gltf = useGltf('./github-transformed.glb', { useDraco: true });
+
+	const component = forwardEventHandlers();
+</script>
+
+<T is={ref} dispose={false} {...$$restProps} bind:this={$component}>
+	{#await gltf}
+		<slot name="fallback" />
+	{:then gltf}
+		<T.Mesh geometry={gltf.nodes.Github_Mesh.geometry}
+			><T.MeshPhysicalMaterial color={[0,0,0]} /></T.Mesh
+		>
+	{:catch error}
+		<slot name="error" {error} />
+	{/await}
+
+	<slot {ref} />
+</T>

src/lib/extrude-svg.ts

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+import type * as THREE from 'three';
+import { SVGLoader } from 'three/examples/jsm/loaders/SVGLoader';
+import type { SVGResult, SVGResultPaths } from 'three/examples/jsm/loaders/SVGLoader';
+
+import { Mesh } from 'three/src/objects/Mesh';
+import { Group } from 'three/src/objects/Group';
+import { MeshNormalMaterial } from 'three/src/materials/MeshNormalMaterial';
+import { ExtrudeGeometry } from 'three/src/geometries/ExtrudeGeometry';
+
+/**
+ * Parses the provided SVG markup and extrudes it into a 3D model using THREE.js.
+ * @param svgMarkup - SVG markup to extrude.
+ * @return Group containing all of the extruded SVG paths.
+ * @throws Error If the SVG markup is empty.
+ */
+export function extrudeSvg(svgMarkup: string): Group {
+  if (!svgMarkup) {
+    throw new Error('SVG markup is empty');
+  }
+
+  const svgData: SVGResult = new SVGLoader().parse(svgMarkup);
+  const material: MeshNormalMaterial = new MeshNormalMaterial();
+
+  const svgGroup: Mesh[][] = svgData.paths.map(createShapeFromPath);
+
+  const group = new Group();
+  svgGroup.flat().forEach(mesh => group.add(mesh));
+
+  return group;
+
+  function createShapeFromPath(path: SVGResultPaths): Mesh[] {
+    const shapes: THREE.Shape[] = path.toShapes(true);
+
+    return shapes.map(shape => extrudeShape(shape, material));
+  }
+
+  function extrudeShape(shape: THREE.Shape, material: MeshNormalMaterial): Mesh {
+    const geometry = new ExtrudeGeometry(shape, {
+      depth: 20,
+      bevelEnabled: false
+    });
+
+    return new Mesh(geometry, material);
+  }
+}