Ways to assign a z-index to Three.js objects without adjusting their z-coordinate

I am currently utilizing Three.js for the purpose of rendering a variety of 2D objects (THREE.PlaneGeometry) organized in layers. The objective is to have all these objects aligned on the same plane, while some are positioned "in front" of or obstructing the view of others. Essentially, I aim to replicate the functionality of the CSS z-index property without introducing complications associated with the z-dimension and potential perspective distortions.

Is there a built-in feature within Three.js that can facilitate this particular requirement?

javascriptthree.js2dz-index

Answer №1

To adjust the renderOrder of a mesh, make sure to set material.depthTest to false before doing so.

    body.material.depthTest = false;
    body.renderOrder = 1;

Answer №2

1) An option is using the object.renderOrder method:

Click here for an example.

2) Another approach involves using an ortographic camera to render a 2D canvas onto the texture of a 3D object:

View more about this technique here.

3) For advanced results, consider combining render order adjustment with rendering to a texture:

Check out this demo for further insight.

Answer №3

To achieve this effect, make sure to utilize polygonOffset by referring to this link.

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