Is there a way to specify a photometric function in Three.js?
Currently, I am utilizing a Lambert material:
new THREE.MeshLambertMaterial({ color: 0xffffff })
However, I am interested in using a Lommel Seeliger but I am unsure of the process and location to define it.
If you want to achieve a specific effect, you will need to create a custom fragment shader. A good example of this can be found towards the bottom of this page, showcasing a Lommel-Seeliger shader implementation.
In Three.js, utilize a ShaderMaterial to implement your shader. For a helpful introduction to this concept, check out this tutorial. The basic idea is to do the following:
var shaderMaterial =
new THREE.ShaderMaterial({
vertexShader: vertexShader,
fragmentShader: fragmentShader
});
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