@math.gl/culling

What is @math.gl/culling?

@math.gl/culling is a JavaScript library that provides various culling algorithms and utilities for 3D graphics applications. It is part of the math.gl suite of libraries, which are designed to handle mathematical computations for graphics and geospatial applications. The culling package specifically focuses on determining the visibility of objects within a scene, which is crucial for optimizing rendering performance.

What are @math.gl/culling's main functionalities?

Frustum Culling

Frustum culling is used to determine whether objects are within the camera's view frustum. This helps in optimizing rendering by not drawing objects that are outside the view.

const { PerspectiveFrustum } = require('@math.gl/culling');
const frustum = new PerspectiveFrustum({
  fov: Math.PI / 3,
  aspectRatio: 1.0,
  near: 1.0,
  far: 100.0
});
const boundingVolume = { /* bounding volume data */ };
const isVisible = frustum.intersectsBoundingVolume(boundingVolume);
console.log(isVisible);

Bounding Volume Hierarchy (BVH)

Bounding Volume Hierarchy (BVH) is a tree structure on a set of geometric objects. BVH is used to accelerate the process of ray tracing and collision detection.

const { BoundingVolumeHierarchy } = require('@math.gl/culling');
const bvh = new BoundingVolumeHierarchy({
  /* BVH construction data */
});
const ray = { /* ray data */ };
const hit = bvh.intersectRay(ray);
console.log(hit);

Occlusion Culling

Occlusion culling is used to determine if an object is hidden behind other objects. This helps in optimizing rendering by not drawing objects that are not visible to the camera.

const { OcclusionCulling } = require('@math.gl/culling');
const occlusionCulling = new OcclusionCulling();
occlusionCulling.addOccluder({ /* occluder data */ });
const isOccluded = occlusionCulling.isOccluded({ /* bounding volume data */ });
console.log(isOccluded);

Other packages similar to @math.gl/culling

three.js

Three.js is a popular JavaScript library for creating 3D graphics in the browser. It includes various culling techniques such as frustum culling and occlusion culling, along with a comprehensive set of features for 3D rendering, animations, and more. Compared to @math.gl/culling, three.js is more feature-rich and widely used for complete 3D graphics applications.

cesium

Cesium is an open-source JavaScript library for creating 3D globes and maps. It includes advanced culling techniques like frustum culling and occlusion culling to optimize rendering performance. Cesium is specifically designed for geospatial applications, making it a more specialized tool compared to @math.gl/culling.

babylonjs

Babylon.js is a powerful, open-source 3D engine that provides a wide range of features for creating 3D applications, including culling techniques like frustum culling and occlusion culling. It is similar to three.js in terms of functionality but offers different APIs and tools for developers. Compared to @math.gl/culling, Babylon.js is a more comprehensive solution for 3D graphics development.

README

Overview

math.gl is a suite of math modules for 3D applications.

This module contains classes for bounding boxes, view frustum intersections etc.

For documentation please visit the website.

Changelog

v3.5.3

• Export altitudeToFovy & fovyToAltitude (#244)