Class Arc

constructor

• new Arc(circle, angleRadians): Arc

• Parameters

  • circle: Circle
  • angleRadians: number

  Returns Arc

• new Arc(center, radius, angleRadians): Arc

• Parameters

  • center: number[]
  • radius: number
  • angleRadians: number

  Returns Arc

angleDegrees

angleDomain

angleRadians

center

circumference

diameter

endAngle

endAngleDegrees

endPoint

isCircle

isValid

length

midPoint

plane

radius

startAngle

startAngleDegrees

startPoint

boundingBox

• boundingBox(): BoundingBox

• Returns BoundingBox

  Bounding box of arc.

  Description

  Computes the 3D axis aligned bounding box for this arc.

closestParameter

• closestParameter(testPoint): number

• Parameters

  • testPoint: number[]

    Point to get close to.

  Returns number

  Parameter (in radians) of the point on the arc that is closest to the test point. If testPoint is the center of the arc, then the starting point of the arc is (arc.Domain()[0]) returned. If no parameter could be found, RhinoMath.UnsetValue is returned.

  Description

  Gets parameter on the arc closest to a test point.

closestPoint

• closestPoint(testPoint): number[]

• Parameters

  • testPoint: number[]

    Point to get close to.

  Returns number[]

  The point on the arc that is closest to testPoint. If testPoint is the center of the arc, then the starting point of the arc is returned. UnsetPoint on failure.

  Description

  Computes the point on an arc that is closest to a test point.

pointAt

• pointAt(t): number[]

• Parameters

  • t: number

    Arc parameter to evaluate.

  Returns number[]

  The point at the given parameter.

  Description

  Gets the point at the given arc parameter.

reverse

• reverse(): void

• Returns void

  Description

  Reverses the orientation of the arc. Changes the domain from [a,b] to [-b,-a].

tangentAt

• tangentAt(t): number[]

• Parameters

  • t: number

    Parameter of tangent to evaluate.

  Returns number[]

  The tangent at the arc at the given parameter.

  Description

  Gets the tangent at the given parameter.

toNurbsCurve

• toNurbsCurve(): NurbsCurve

• Returns NurbsCurve

  A nurbs curve representation of this arc or null if no such representation could be made.

  Description

  Initializes a nurbs curve representation of this arc. This amounts to the same as calling NurbsCurve.CreateFromArc().

transform

• transform(xform): boolean

• Parameters

  • xform: Transform

    Transformations to apply. Note that arcs cannot handle non-euclidean transformations.

  Returns boolean

  true on success, false on failure.

  Description

  Transforms the arc using a Transformation matrix.

trim

• trim(domain): boolean

• Parameters

  • domain: number[]

    0 < domain[1] - domain[0] <= 2.0 * RhinoMath.Pi.

  Returns boolean

  true on success, false on failure.

  Description

  Sets arc's angle domain (in Radians) as a sub-domain of the circle.

Static createFromPoints

• createFromPoints(startPoint, pointOnInterior, endPoint): Arc

• Parameters

  • startPoint: number[]

    Start point of arc.
  • pointOnInterior: number[]

    Point on arc interior.
  • endPoint: number[]

    End point of arc.

  Returns Arc

  Description

  Initializes a new arc through three points. If the points are coincident or co-linear, this will result in an Invalid arc.