axis3d-geometry

Common geometry for Axis3D. All the geometry in this module extends the Geometry class exposing positions, normals, uvs, and cells as properties on the instance effectively creating a simplicial-complex.

Installation

$ npm install axis3d-geometry

Ensure axis3d is already installed as a peer dependency.

Example

const {
  PerspectiveCamera,
  Material,
  Context,
  Frame,
  Mesh
} = require('axis3d')
const { BoxGeometry } = require('axis3d-geometry')

const ctx = new Context()
const material = new Material(ctx)
const geometry = new BoxGeometry()
const camera = new PerspectiveCamera(ctx)
const frame = new Frame(ctx)
const box = new Mesh(ctx, {geometry})

frame(({time}) => {
  camera({position: [0, 0, 10]}, () => {
    material({}, () => {
      box({wireframe: true})
    })
  })
})

API

BoxGeometry(opts)

const box = new BoxGeometry(opts)

where opts contains:

• segments - defaults to
• x - Size along the x-axis. (default: 1)
• y - Size along the y-axis. (default: 1)
• z - Size along the z-axis. (default: 1)

and are passed directly to primitive-cube.

TriangleGeometry

const triangle = new TriangleGeometry()

CylinderGeometry

const cylinder = new CylinderGeometry(opts)

where opts contains:

• height - Size along the y-axis. (default: 5)
• radiusTop - Radius of the top cross-section, or circle. (default: 1)
• radiusBottom - Radius of the bottom cross-section, or circle. (default: 1)
• radialSegments - Number of radial segments in the complex. (default: 50)
• heightSegments - Number of height segments in the complex. (default: 50)

and are passed directly to primitive-cylinder.

SphereGeometry

const sphere = new SphereGeometry(opts)

where opts contains:

• segments - Number of segments in the complex. (default: 32)
• radius - Spherical radius. (default: 1)

and are passed directly to primitive-sphere.

PlaneGeometry

const plane = new PlaneGeometry(opts)

where opts contains:

• segments - Number of segments along the xy-axis. (default: {x: 5, y: 5})
  • segments.x - Number of segments along the x-axis. (default: 5)
  • segments.y - Number of segments along the y-axis. (default: 5)
• size - Size of complex along the xy-axis. (default: {x: 1, y: 1})
  • size.x - Size of complex along the x-axis. (default: 1)
  • size.y - Size of complex along the y-axis. (default: 1)
• quads - Indication to generate quads instead of triangles. (default: false)

and are passed directly to primitive-plane.

TorusGeometry

const torus = new TorusGeometry(opts)

where opts contains:

• majorSegments - The number of segments for the major ring. (default: 32)
• minorSegments - The number of segments for the minor rigg. (default: 64)
• majorRadius - The radius of the major ring. (default: 1)
• minorRadius - The radius of the minor ring. (default: 0.5)
• arc - The torus arc path. (default: 2*Math.PI)

and are passed directly to primitive-torus.

CapsuleGeometry

const capsule = new CapsuleGeometry(opts)

where opts contains:

• radius - The radius of the inner circle cross-section. (default: 0.5)
• height - The size along the y-axix. (default: 1)
• segments - The number of segments in complex. (default: 12)

and are passed directly to primitive-capsule.

License

MIT