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Im Hintergrund läuft eine Planetensimulation, geschrieben in JavaScript und Three.js.
Die zu sehenden Texturen stammen von:
https://www.solarsystemscope.com/textures/
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59 lines
1.1 KiB
59 lines
1.1 KiB
import { |
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BufferGeometry, |
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Float32BufferAttribute |
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} from 'three'; |
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import { ConvexHull } from '../math/ConvexHull.js'; |
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class ConvexGeometry extends BufferGeometry { |
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constructor( points ) { |
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super(); |
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// buffers |
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const vertices = []; |
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const normals = []; |
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if ( ConvexHull === undefined ) { |
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console.error( 'THREE.ConvexBufferGeometry: ConvexBufferGeometry relies on ConvexHull' ); |
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} |
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const convexHull = new ConvexHull().setFromPoints( points ); |
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// generate vertices and normals |
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const faces = convexHull.faces; |
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for ( let i = 0; i < faces.length; i ++ ) { |
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const face = faces[ i ]; |
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let edge = face.edge; |
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// we move along a doubly-connected edge list to access all face points (see HalfEdge docs) |
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do { |
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const point = edge.head().point; |
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vertices.push( point.x, point.y, point.z ); |
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normals.push( face.normal.x, face.normal.y, face.normal.z ); |
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edge = edge.next; |
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} while ( edge !== face.edge ); |
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} |
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// build geometry |
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this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) ); |
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this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) ); |
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} |
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} |
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export { ConvexGeometry };
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