Creating a topographical map from a 3D model

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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Custom Terrain Heightmap Generator</title>
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        body { margin: 0; overflow: hidden; }
        canvas { display: block; }
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    <script type="module">
        console.log("B\"H")
        import * as THREE from 'https://example.com/scripts/build/three.module.js';
        import { OrbitControls } from "https://example.com/scripts/jsm/controls/OrbitControls.js"
        import HeightMapGenerator from "https://example.com/editor/lib/HeightmapGenerator.js"

        // Rest of the script content...
    </script>
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</html>

Need help with a custom heightmap generator? I'm working on one that generates a heightmap from a mesh and then downloads it. Any tips on improving the process for better accuracy would be appreciated.


// Custom code for the terrain heightmap generation goes here

Answer №1

It seems to me that your current approach may not be the most effective.

If you are looking to create a heightmap, consider using an image created through a single shader with a procedural method, such as Perlin Noise.

  • For a simple example: check out this link
  • For a more complex example: take a look at this link

These examples are from IQ, who has written articles on procedural terrain generation starting here.

To implement this concept effectively, start by positioning a Plane facing the camera. It may be easier to control the size of the generated content with an Orthographic camera. Then, consider two options:

  1. The "no-code" option can be found in this example here. You can generate Procedural data texture for terrain in javascript with the help of ImprovedNoise, using a MeshDepthMaterial.
  2. For the second option (which I believe is the best), learn how to implement your noise shaders starting here, using a custom ShaderMaterial. This will add depth to your code and world, unveiling a higher dimension: Mathematics.

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