Exploring the world of shapes and angles in three.js

I'm attempting to recreate a scene similar to this one, where the shapes have an outline:

Unfortunately, neither of these two options are working:

const material = new THREE.MeshNormalMaterial();
const material = new THREE.MeshBasicMaterial({ color: "#556670" });

My progress has been limited so far, does anyone have any insights on how to achieve this?

Answer №1

If you're in charge of rendering the scene yourself and have access to the raw three.js geometry, instead of tessellated triangles, you can simply create lines along the edges of the geometry:

// Setting up box geometry and material
const geometry = new THREE.BoxGeometry(1, 1, 1);
const material = new THREE.MeshBasicMaterial({color: '#ffc32a'});

// Creating the box and adding it to the scene
const cube = new THREE.Mesh(geometry, material);
scene.add(cube);

// Generating box edges and incorporating them into the scene
const edges = new THREE.EdgesGeometry(geometry);
const line = new THREE.LineSegments(
   edges, 
   new THREE.LineBasicMaterial({color: '#000000'})
);
scene.add(line);

No need for complicated custom shaders or complex operations.

However, due to GPU limitations, this approach will only produce a one-pixel line. For thicker lines, consider using LineMaterial, LineSegments2, and LineSegmentsGeometry found in examples.

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