Utility for determining visible geometry from a top down orthographic perspective. This can be run before performing projection generation to reduce the complexity of the operation at the cost of potentially missing small details.
Constructor for the visibility culler that takes the renderer to use for culling.
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
import { MeshVisibilityCuller, ProjectionGenerator } from 'three-edge-projection';
const URL = 'https://example.com/building.glb';
const { scene: model } = await new GLTFLoader().loadAsync( URL );
const visibleMeshes = await new MeshVisibilityCuller( renderer, { pixelsPerMeter: 0.01 } ).cull( model );
const task = new ProjectionGenerator().generate( visibleMeshes );
let step = task.next();
while ( ! step.done ) step = task.next();On this page
Properties
pixelsPerMeter: number
The size of a pixel on a single dimension. If this results in a texture larger than what the graphics context can provide then the rendering is tiled.
Methods
new MeshVisibilityCuller(
renderer: WebGLRenderer,
options?: {
pixelsPerMeter: number = 0.1
}
)async cull(
object: Object3D | Array<Object3D>
): Promise<Array<Object3D>>Returns the set of meshes that are visible within the given object.