primitive-geometry v2.10.0
primitive-geometry
Geometries for 3D rendering, including normals, UVs and cell indices (faces). Perfect if you want to supercharge your dependency folder... with 30KB of geometries.
Installation
npm install primitive-geometry
Features
- Common API: options object in, simplicial complex out
- Outputs TypedArray (
Float32Array
for geometry data andUint8Array|Uint16Array|Uint32Array
for cells) - Zero dependency
- Same parameters naming: radius (or rx/ry/rz), scale (or height/sx/sy/sz), segments (or nx/ny/nz) and a few specific parameters for icosphere/cylinder/cone/torus.
- Different Elliptical mappings: see the comparison images and the demo.
See difference with v1 here.
Usage
See the example and its source.
import Primitives from "primitive-geometry";
const quadGeometry = Primitives.quad({
scale: 0.5,
});
console.log(quadGeometry);
// {
// positions: Float32Array [x, y, z, x, y, z, ...],
// normals: Float32Array [x, y, z, x, y, z, ...]
// uvs: Float32Array [u, v, u, v, ...],
// cells: Uint8/16/32/Array [a, b, c, a, b, c, ...],
// }
const planeGeometry = Primitives.plane({
sx: 1,
sy: 1,
nx: 1,
ny: 1,
direction: "z",
quads: false,
});
const roundedRectangleGeometry = Primitives.roundedRectangle({
sx: 1,
sy: 1,
nx: 1,
ny: 1,
radius: 0.25,
roundSegments: 8,
edgeSegments: 1,
});
const stadiumGeometry = Primitives.stadium({
sx: 1,
sy: 0.5,
nx: 1,
ny: 1,
roundSegments: 8,
edgeSegments: 1,
});
const ellipseGeometry = Primitives.ellipse({
sx: 1,
sy: 0.5,
radius: 0.5,
segments: 32,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
mapping: mappings.elliptical,
});
const disc = Primitives.disc({
radius: 0.5,
segments: 32,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
mapping: mappings.concentric,
});
const superellipse = Primitives.superellipse({
sx: 1,
sy: 0.5,
radius: 0.5,
segments: 32,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
mapping: mappings.lamé,
m: 2,
n: 2,
});
const squircle = Primitives.squircle({
sx: 1,
sy: 1,
radius: 0.5,
segments: 128,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
mapping: mappings.fgSquircular,
squareness: 0.95,
});
const annulus = Primitives.annulus({
radius: 0.5,
segments: 32,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
innerRadius: 0.25,
mapping: mappings.concentric,
});
const reuleux = Primitives.reuleux({
radius: 0.5,
segments: 32,
innerSegments: 16,
theta: Math.PI * 2,
thetaOffset: 0,
mapping: mappings.concentric,
n: 3,
});
const cubeGeometry = Primitives.cube({
sx: 1,
sy: 1,
sz: 1,
nx: 1,
ny: 1,
nz: 1,
});
const roundedCubeGeometry = Primitives.roundedCube({
sx: 1,
sy: 1,
sz: 1,
nx: 1,
ny: 1,
nz: 1,
radius: 0.25,
roundSegments: 8,
edgeSegments: 1,
});
const sphereGeometry = Primitives.sphere({
radius: 0.5,
nx: 32,
ny: 16,
theta: Math.PI,
thetaOffset: 0,
phi: Math.PI * 2,
phiOffset: 0,
});
const icosphereGeometry = Primitives.icosphere({
radius: 0.5,
subdivisions: 2,
});
const ellipsoidGeometry = Primitives.ellipsoid({
radius: 1,
nx: 32,
ny: 16,
rx: 0.5,
ry: 0.25,
rz: 0.25,
theta: Math.PI,
thetaOffset: 0,
phi: Math.PI * 2,
phiOffset: 0,
});
const cylinderGeometry = Primitives.cylinder({
height: 1,
radius: 0.25,
nx: 16,
ny: 1,
radiusApex: 0.25,
capSegments: 1,
capApex: true,
capBase: true,
capBaseSegments: 1,
phi: Math.PI * 2,
});
const coneGeometry = Primitives.cone({
height: 1,
radius: 0.25,
nx: 16,
ny: 1,
capSegments: 1,
capBase: true,
theta: Math.PI * 2,
});
const capsuleGeometry = Primitives.capsule({
height: 0.5,
radius: 0.25,
nx: 16,
ny: 1,
roundSegments: 16,
theta: Math.PI * 2,
});
const torusGeometry = Primitives.torus({
radius: 0.4,
segments: 64,
minorRadius: 0.1,
minorSegments: 32,
theta: Math.PI * 2,
thetaOffset: 0,
phi: Math.PI * 2,
phiOffset: 0,
});
const tetrahedron = Primitives.tetrahedron({
radius: 0.5,
});
const icosahedron = Primitives.icosahedron({
radius: 0.5,
});
// without normals/uvs
const boxGeometry = Primitives.box({
sx: 1,
sy: 1,
sz: 1,
});
const circleGeometry = Primitives.circle({
radius: 0.5,
segments: 32,
closed: false,
theta: Math.PI * 2,
thetaOffset: 0,
});
API
Modules
Typedefs
index
Re-export all geometries, UV mappings functions and utils.
annulus
annulus(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | AnnulusOptions | {} |
annulus~AnnulusOptions : object
Kind: inner typedef of annulus Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
segments | number | 32 |
innerSegments | number | 16 |
theta | number | TAU |
thetaOffset | number | 0 |
innerRadius | number | radius * 0.5 |
mapping | function | mappings.concentric |
box
- box
- box([options]) ⇒ BasicSimplicialComplex ⏏
- ~BoxOptions : object
- box([options]) ⇒ BasicSimplicialComplex ⏏
box(options) ⇒ BasicSimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | BoxOptions | {} |
box~BoxOptions : object
Kind: inner typedef of box Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
sz | number | sx |
capsule
capsule(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | CapsuleOptions | {} |
capsule~CapsuleOptions : object
Kind: inner typedef of capsule Properties
Name | Type | Default |
---|---|---|
height | number | 0.5 |
radius | number | 0.25 |
nx | number | 16 |
ny | number | 1 |
roundSegments | number | 32 |
phi | number | TAU |
circle
circle(options) ⇒ BasicSimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | CircleOptions | {} |
circle~CircleOptions : object
Kind: inner typedef of circle Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
segments | number | 32 |
theta | number | TAU |
thetaOffset | number | 0 |
closed | boolean | false |
cone
- cone
- cone([options]) ⇒ SimplicialComplex ⏏
- ~ConeOptions : object
- cone([options]) ⇒ SimplicialComplex ⏏
cone(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | ConeOptions | {} |
cone~ConeOptions : object
Kind: inner typedef of cone Properties
Name | Type | Default |
---|---|---|
height | number | 1 |
radius | number | 0.25 |
nx | number | 16 |
ny | number | 1 |
capSegments | number | 1 |
capBase | boolean | true |
phi | number | TAU |
cube
- cube
- cube([options]) ⇒ SimplicialComplex ⏏
- ~CubeOptions : object
- cube([options]) ⇒ SimplicialComplex ⏏
cube(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | CubeOptions | {} |
cube~CubeOptions : object
Kind: inner typedef of cube Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
sz | number | sx |
nx | number | 1 |
ny | number | nx |
nz | number | nx |
cylinder
cylinder(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | CylinderOptions | {} |
cylinder~CylinderOptions : object
Kind: inner typedef of cylinder Properties
Name | Type | Default |
---|---|---|
height | number | 1 |
radius | number | 0.25 |
nx | number | 16 |
ny | number | 1 |
radiusApex | number | radius |
capSegments | number | 1 |
capApex | boolean | true |
capBase | boolean | true |
phi | number | TAU |
disc
- disc
- disc([options]) ⇒ SimplicialComplex ⏏
- ~DiscOptions : object
- disc([options]) ⇒ SimplicialComplex ⏏
disc(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | DiscOptions | {} |
disc~DiscOptions : object
Kind: inner typedef of disc Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
segments | number | 32 |
innerSegments | number | 16 |
theta | number | TAU |
thetaOffset | number | 0 |
mapping | function | mappings.concentric |
ellipse
ellipse(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | EllipseOptions | {} |
ellipse~EllipseOptions : object
Kind: inner typedef of ellipse Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | 0.5 |
radius | number | 0.5 |
segments | number | 32 |
innerSegments | number | 16 |
theta | number | TAU |
thetaOffset | number | 0 |
mapping | function | mappings.elliptical |
ellipsoid
ellipsoid(options) ⇒ SimplicialComplex ⏏
Default to an oblate spheroid.
Kind: Exported function
Param | Type | Default |
---|---|---|
options | EllipsoidOptions | {} |
ellipsoid~EllipsoidOptions : object
Kind: inner typedef of ellipsoid Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
nx | number | 32 |
ny | number | 16 |
rx | number | 1 |
ry | number | 0.5 |
rz | number | ry |
theta | number | Math.PI |
thetaOffset | number | 0 |
phi | number | TAU |
phiOffset | number | 0 |
icosahedron
icosahedron(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | IcosahedronOptions | {} |
icosahedron~IcosahedronOptions : object
Kind: inner typedef of icosahedron Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
icosphere
icosphere(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | IcosphereOptions | {} |
icosphere~IcosphereOptions : object
Kind: inner typedef of icosphere Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
subdivisions | number | 2 |
mappings
plane
- plane
- plane([options]) ⇒ SimplicialComplex ⏏
- ~PlaneOptions : object
- ~PlaneDirection : "x" | "-x" | "y" | "-y" | "z" | "-z"
- plane([options]) ⇒ SimplicialComplex ⏏
plane(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | PlaneOptions | {} |
plane~PlaneOptions : object
Kind: inner typedef of plane Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
nx | number | 1 |
ny | number | nx |
direction | PlaneDirection | "z" |
quads | boolean | false |
plane~PlaneDirection : "x" | "-x" | "y" | "-y" | "z" | "-z"
Kind: inner typedef of plane
quad
- quad
- quad([options]) ⇒ SimplicialComplex ⏏
- ~QuadOptions : object
- quad([options]) ⇒ SimplicialComplex ⏏
quad(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | QuadOptions | {} |
quad~QuadOptions : object
Kind: inner typedef of quad Properties
Name | Type | Default |
---|---|---|
scale | number | 0.5 |
reuleux
reuleux(options) ⇒ SimplicialComplex ⏏
Kind: Exported function See: Parametric equations for regular and Reuleaux polygons
Param | Type | Default |
---|---|---|
options | ReuleuxOptions | {} |
reuleux~ReuleuxOptions : object
Kind: inner typedef of reuleux Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
segments | number | 32 |
innerSegments | number | 16 |
theta | number | TAU |
thetaOffset | number | 0 |
mapping | function | mappings.concentric |
n | number | 3 |
roundedCube
roundedCube(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | RoundedCubeOptions | {} |
roundedCube~RoundedCubeOptions : object
Kind: inner typedef of roundedCube Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
sz | number | sx |
nx | number | 1 |
ny | number | nx |
nz | number | nx |
radius | number | sx * 0.25 |
roundSegments | number | 8 |
edgeSegments | number | 1 |
roundedRectangle
roundedRectangle(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | RoundedCubeOptions | {} |
roundedRectangle~RoundedCubeOptions : object
Kind: inner typedef of roundedRectangle Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
nx | number | 1 |
ny | number | nx |
radius | number | sx * 0.25 |
roundSegments | number | 8 |
edgeSegments | number | 1 |
sphere
- sphere
- sphere([options]) ⇒ SimplicialComplex ⏏
- ~SphereOptions : object
- sphere([options]) ⇒ SimplicialComplex ⏏
sphere(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | SphereOptions | {} |
sphere~SphereOptions : object
Kind: inner typedef of sphere Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
nx | number | 32 |
ny | number | 16 |
theta | number | Math.PI |
thetaOffset | number | 0 |
phi | number | TAU |
phiOffset | number | 0 |
squircle
squircle(options) ⇒ SimplicialComplex ⏏
Fernández-Guasti squircle
Kind: Exported function See: Squircular Calculations – Chamberlain Fong
Param | Type | Default |
---|---|---|
options | SquircleOptions | {} |
squircle~SquircleOptions : object
Kind: inner typedef of squircle Properties
Name | Type | Default | Description |
---|---|---|---|
sx | number | 1 | |
sy | number | 1 | |
radius | number | 0.5 | |
segments | number | 128 | |
innerSegments | number | 16 | |
theta | number | TAU | |
thetaOffset | number | 0 | |
mapping | function | mappings.fgSquircular | |
squareness | number | 0.95 | Squareness (0 < s <= 1) |
stadium
stadium(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | StadiumOptions | {} |
stadium~StadiumOptions : object
Kind: inner typedef of stadium Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | sx |
nx | number | 1 |
ny | number | nx |
roundSegments | number | 8 |
edgeSegments | number | 1 |
superellipse
superellipse(options) ⇒ SimplicialComplex ⏏
Lamé curve See elliptical-mapping example for a few special cases
Kind: Exported function See
Param | Type | Default |
---|---|---|
options | SuperellipseOptions | {} |
superellipse~SuperellipseOptions : object
Kind: inner typedef of superellipse Properties
Name | Type | Default |
---|---|---|
sx | number | 1 |
sy | number | 0.5 |
radius | number | 0.5 |
segments | number | 32 |
innerSegments | number | 16 |
theta | number | TAU |
thetaOffset | number | 0 |
mapping | function | mappings.lamé |
m | number | 2 |
n | number | m |
tetrahedron
tetrahedron(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | TetrahedronOptions | {} |
tetrahedron~TetrahedronOptions : object
Kind: inner typedef of tetrahedron Properties
Name | Type | Default |
---|---|---|
radius | number | 0.5 |
torus
- torus
- torus([options]) ⇒ SimplicialComplex ⏏
- ~TorusOptions : object
- torus([options]) ⇒ SimplicialComplex ⏏
torus(options) ⇒ SimplicialComplex ⏏
Kind: Exported function
Param | Type | Default |
---|---|---|
options | TorusOptions | {} |
torus~TorusOptions : object
Kind: inner typedef of torus Properties
Name | Type | Default |
---|---|---|
radius | number | 0.4 |
segments | number | 64 |
minorRadius | number | 0.1 |
minorSegments | number | 32 |
theta | number | TAU |
thetaOffset | number | 0 |
phi | number | TAU |
phiOffset | number | 0 |
utils
- utils
- .TAU : number
- .HALF_PI : number
- .SQRT2 : number
- .getCellsTypedArray ⇒ Uint8Array | Uint16Array | Uint32Array
- .normalize(v) ⇒ Array.<number>
- .checkArguments(...args)
- .setTypedArrayType(type)
utils.TAU : number
Two times PI.
Kind: static constant of utils
utils.HALF_PI : number
Two times PI.
Kind: static constant of utils
utils.SQRT2 : number
Square root of 2.
Kind: static constant of utils
utils.getCellsTypedArray ⇒ Uint8Array | Uint16Array | Uint32Array
Select cells typed array from a size determined by amount of vertices.
Kind: static constant of utils See: MDN TypedArray objects
Param | Type | Description |
---|---|---|
size | number | The max value expected |
utils.normalize(v) ⇒ Array.<number>
Normalize a vector 3.
Kind: static method of utils Returns: Array.<number> - Normalized vector
Param | Type | Description |
---|---|---|
v | Array.<number> | Vector 3 array |
utils.checkArguments(...args)
Ensure first argument passed to the primitive functions is an object
Kind: static method of utils
Param | Type |
---|---|
...args | * |
utils.setTypedArrayType(type)
Enforce a typed array constructor for cells
Kind: static method of utils
Param | Type |
---|---|
type | Class.<Uint8Array> | Class.<Uint16Array> | Class.<Uint32Array> |
BasicSimplicialComplex : object
Geometry definition without normals and UVs.
Kind: global typedef Properties
Name | Type |
---|---|
positions | Float32Array |
cells | Uint8Array | Uint16Array | Uint32Array |
SimplicialComplex : object
Geometry definition.
Kind: global typedef Properties
Name | Type |
---|---|
positions | Float32Array |
normals | Float32Array |
uvs | Float32Array |
cells | Uint8Array | Uint16Array | Uint32Array |
License
See original packages used in v1:
- primitive-quad
- primitive-plane
- primitive-cube
- primitive-rounded-cube
- primitive-capsule
- primitive-sphere
- primitive-icosphere
- primitive-ellipsoid
- primitive-torus
- primitive-cylinder
- primitive-box
- primitive-circle
Differences with v1:
- use 3D positions for circle
- base disc on ellispse and add inner segments
- fix cylinder orientation and uvs
- fix icosphere uvs (based on: https://github.com/mourner/icomesh)
- fix quad normal to +z
- fix subdivision for rounded geometries (rounded-cube and capsule)
- uniformise api and internal names
- use options object
- remove gl-matrix/pex-math and icosphere dependencies
- use only trigonometric operation, no matrix transformation
- base sphere on ellispsoid
- add cone based on cylinder
- use flat typed arrays
- defaults produce geometries contained in a unit bbox
- add jsdoc, prettier, eslint via snowdev
MIT. See license file.