Three.js API手册

AnimationAction AnimationClip AnimationMixer AnimationObjectGroup AnimationUtils KeyframeTrack PropertyBinding PropertyMixer
动画 / 轨道
BooleanKeyframeTrack ColorKeyframeTrack NumberKeyframeTrack QuaternionKeyframeTrack StringKeyframeTrack VectorKeyframeTrack
Audio AudioAnalyser AudioContext AudioListener PositionalAudio
ArrayCamera Camera CubeCamera OrthographicCamera PerspectiveCamera StereoCamera
Animation Core CustomBlendingEquation DrawModes Materials Renderer Textures
BufferAttribute BufferGeometry Clock DirectGeometry EventDispatcher Face3 Geometry InstancedBufferAttribute InstancedBufferGeometry InstancedInterleavedBuffer InterleavedBuffer InterleavedBufferAttribute Layers Object3D Raycaster Uniform
核心 / BufferAttributes
Earcut ShapeUtils
附件 / 核心
Curve CurvePath Font Interpolations Path Shape ShapePath
附件 / 曲线
ArcCurve CatmullRomCurve3 CubicBezierCurve CubicBezierCurve3 EllipseCurve LineCurve LineCurve3 QuadraticBezierCurve QuadraticBezierCurve3 SplineCurve
附件 / 物体
BoxBufferGeometry BoxGeometry CircleBufferGeometry CircleGeometry ConeBufferGeometry ConeGeometry CylinderBufferGeometry CylinderGeometry DodecahedronBufferGeometry DodecahedronGeometry EdgesGeometry ExtrudeBufferGeometry ExtrudeGeometry IcosahedronBufferGeometry IcosahedronGeometry LatheBufferGeometry LatheGeometry OctahedronBufferGeometry OctahedronGeometry ParametricBufferGeometry ParametricGeometry PlaneBufferGeometry PlaneGeometry PolyhedronBufferGeometry PolyhedronGeometry RingBufferGeometry RingGeometry ShapeBufferGeometry ShapeGeometry SphereBufferGeometry SphereGeometry TetrahedronBufferGeometry TetrahedronGeometry TextBufferGeometry TextGeometry TorusBufferGeometry TorusGeometry TorusKnotBufferGeometry TorusKnotGeometry TubeBufferGeometry TubeGeometry WireframeGeometry
ArrowHelper AxesHelper BoxHelper Box3Helper CameraHelper DirectionalLightHelper FaceNormalsHelper GridHelper PolarGridHelper PositionalAudioHelper HemisphereLightHelper PlaneHelper PointLightHelper RectAreaLightHelper SkeletonHelper SpotLightHelper VertexNormalsHelper
AmbientLight DirectionalLight HemisphereLight Light PointLight RectAreaLight SpotLight
灯光 / 阴影
DirectionalLightShadow LightShadow SpotLightShadow
AnimationLoader AudioLoader BufferGeometryLoader Cache CompressedTextureLoader CubeTextureLoader DataTextureLoader FileLoader FontLoader ImageBitmapLoader ImageLoader Loader LoaderUtils MaterialLoader ObjectLoader TextureLoader
加载器 / 管理器
DefaultLoadingManager LoadingManager
LineBasicMaterial LineDashedMaterial Material MeshBasicMaterial MeshDepthMaterial MeshDistanceMaterial MeshLambertMaterial MeshMatcapMaterial MeshNormalMaterial MeshPhongMaterial MeshPhysicalMaterial MeshStandardMaterial MeshToonMaterial PointsMaterial RawShaderMaterial ShaderMaterial ShadowMaterial SpriteMaterial
Box2 Box3 Color Cylindrical Euler Frustum Interpolant Line3 Math Matrix3 Matrix4 Plane Quaternion Ray Sphere Spherical Triangle Vector2 Vector3 Vector4
数学库 / 插值
CubicInterpolant DiscreteInterpolant LinearInterpolant QuaternionLinearInterpolant
Bone Group Line LineLoop LineSegments LOD Mesh Points Skeleton SkinnedMesh Sprite
WebGLMultisampleRenderTarget WebGLRenderer WebGLRenderTarget WebGLRenderTargetCube
渲染器 / 着色器
ShaderChunk ShaderLib UniformsLib UniformsUtils
Fog FogExp2 Scene
CanvasTexture CompressedTexture CubeTexture DataTexture DataTexture3D DepthTexture Texture VideoTexture
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An abstract base class for creating a Curve object that contains methods for interpolation. For an array of Curves see CurvePath.



This constructor creates a new Curve.


# .arcLengthDivisions : Integer

This value determines the amount of divisions when calculating the cumulative segment lengths of a curve via .getLengths. To ensure precision when using methods like .getSpacedPoints, it is recommended to increase .arcLengthDivisions if the curve is very large. Default is 200.


# .getPoint ( t : Float, optionalTarget : Vector ) : Vector

t - A position on the curve. Must be in the range [ 0, 1 ].
optionalTarget — (optional) If specified, the result will be copied into this Vector, otherwise a new Vector will be created.

Returns a vector for a given position on the curve.

# .getPointAt ( u : Float, optionalTarget : Vector ) : Vector

u - A position on the curve according to the arc length. Must be in the range [ 0, 1 ].
optionalTarget — (optional) If specified, the result will be copied into this Vector, otherwise a new Vector will be created.

Returns a vector for a given position on the curve according to the arc length.

# .getPoints ( divisions : Integer ) : Array

divisions -- number of pieces to divide the curve into. Default is 5.

Returns a set of divisions + 1 points using getPoint( t ).

# .getSpacedPoints ( divisions : Integer ) : Array

divisions -- number of pieces to divide the curve into. Default is 5.

Returns a set of divisions + 1 equi-spaced points using getPointAt( u ).

# .getLength () : Float

Get total curve arc length.

# .getLengths ( divisions : Integer ) : Array

Get list of cumulative segment lengths.

# .updateArcLengths () : null

Update the cumlative segment distance cache.

# .getUtoTmapping ( u : Float, distance : Float ) : Float

Given u in the range ( 0 .. 1 ), returns t also in the range ( 0 .. 1 ). u and t can then be used to give you points which are equidistant from the ends of the curve, using .getPoint.

# .getTangent ( t : Float ) : Vector

Returns a unit vector tangent at t. If the derived curve does not implement its tangent derivation, two points a small delta apart will be used to find its gradient which seems to give a reasonable approximation.

# .getTangentAt ( u : Float ) : Vector

Returns tangent at a point which is equidistant to the ends of the curve from the point given in .getTangent.

# .computeFrenetFrames ( segments : Integer, closed : Boolean ) : Object

Generates the Frenet Frames. Used in geometries like TubeGeometry or ExtrudeGeometry.

# .clone () : Curve

Creates a clone of this instance.

# .copy ( source : Curve ) : Curve

Copies another Curve object to this instance.

# .toJSON () : Object

Returns a JSON object representation of this instance.

# .fromJSON ( json : Object ) : Curve

Copies the data from the given JSON object to this instance.