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zine-mesh-utils.js
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zine-mesh-utils.js
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import * as THREE from 'three';
import {
depthFloat32ArrayToOrthographicGeometry,
} from './zine-geometry-utils.js';
import {
floorNetWorldSize,
floorNetWorldDepth,
floorNetResolution,
floorNetPixelSize,
} from './zine-constants.js';
//
export const getFloorNetPhysicsMesh = ({
floorNetDepths,
floorNetCamera,
material,
}) => {
const geometry = depthFloat32ArrayToOrthographicGeometry(
floorNetDepths,
floorNetPixelSize,
floorNetPixelSize,
floorNetCamera,
);
geometry.computeVertexNormals();
// shift geometry by half a floorNetWorldSize
geometry.translate(floorNetWorldSize/2, 0, floorNetWorldSize/2);
// ...but also shift the mesh to compensate
// this centering is required for the physics to work and render correctly
const mesh = new THREE.Mesh(geometry, material);
mesh.position.set(-floorNetWorldSize/2, 0, -floorNetWorldSize/2);
return mesh;
};