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📄 ConvexGeometry.js

📊 Analysis Summary

Metric	Count
🧱 Classes	1
📦 Imports	3
📊 Variables & Constants	6

📚 Table of Contents

• Imports
• Variables & Constants
• Classes

🛠️ File Location:

📂 examples/jsm/geometries/ConvexGeometry.js

📦 Imports

Name	Source
BufferGeometry	three
Float32BufferAttribute	three
ConvexHull	../math/ConvexHull.js

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Variables & Constants

Name	Type	Kind	Value	Exported
vertices	any[]	let/var	[]	✗
normals	any[]	let/var	[]	✗
faces	any[]	let/var	convexHull.faces	✗
face	any	let/var	faces[ i ]	✗
edge	any	let/var	face.edge	✗
point	any	let/var	edge.head().point	✗

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Classes

ConvexGeometry

Class Code

class ConvexGeometry extends BufferGeometry {

    /**
     * Constructs a new convex geometry.
     *
     * @param {Array<Vector3>} points - An array of points in 3D space which should be enclosed by the convex hull.
     */
    constructor( points = [] ) {

        super();

        // buffers

        const vertices = [];
        const normals = [];

        const convexHull = new ConvexHull().setFromPoints( points );

        // generate vertices and normals

        const faces = convexHull.faces;

        for ( let i = 0; i < faces.length; i ++ ) {

            const face = faces[ i ];
            let edge = face.edge;

            // we move along a doubly-connected edge list to access all face points (see HalfEdge docs)

            do {

                const point = edge.head().point;

                vertices.push( point.x, point.y, point.z );
                normals.push( face.normal.x, face.normal.y, face.normal.z );

                edge = edge.next;

            } while ( edge !== face.edge );

        }

        // build geometry

        this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
        this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );

    }

}

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