Arc
- class rhino3dm.Arc
- Arc(circle, angleRadians)
Initializes a new instance of an arc from a base circle and an angle.
- Parameters:
circle (Circle) – Circle to base arc upon.
angleRadians (float) – Sweep angle of arc (in radians)
- Arc(center, radius, angleRadians)
Initializes a new horizontal arc at the given center point, with a custom radius and angle.
- Parameters:
center (rhino3dm.Point3d) – Center point of arc.
radius (float) – Radius of arc.
angleRadians (float) – Sweep angle of arc (in radians)
- Arc(startPoint, pointOnInterior, endPoint)
Initializes a new arc through three points. If the points are coincident or co-linear, this will result in an Invalid arc.
- Parameters:
startPoint (rhino3dm.Point3d) – Start point of arc.
pointOnInterior (rhino3dm.Point3d) – Point on arc interior.
endPoint (rhino3dm.Point3d) – End point of arc.
- Arc(pointA, tangentA, pointB)
Initializes a new arc from end points and a tangent vector. If the tangent is parallel with the endpoints this will result in an Invalid arc.
- Parameters:
pointA (rhino3dm.Point3d) – Start point of arc.
tangentA (rhino3dm.Vector3d) – Tangent at start of arc.
pointB (rhino3dm.Point3d) – End point of arc.
- IsValid
bool: Gets a value indicating whether or not this arc is valid. Detail: Radius>0 and 0<AngleRadians()<=2*Math.Pi.
- IsCircle
bool: Gets a value indicating whether or not this arc is a complete circle.
- Radius
float: Gets or sets the radius of this arc.
- Diameter
float: Gets or sets the Diameter of this arc.
- Plane
rhino3dm.Plane: Gets or sets the plane in which this arc lies.
- Center
rhino3dm.Point3d: Gets or sets the center point for this arc.
- Circumference
float: Gets the circumference of the circle that is coincident with this arc.
- Length
float: Gets the length of the arc. (Length = Radius * (subtended angle in radians)).
- StartPoint
rhino3dm.Point3d: Gets the start point of the arc.
- MidPoint
rhino3dm.Point3d: Gets the mid-point of the arc.
- EndPoint
rhino3dm.Point3d: Gets the end point of the arc.
- AngleDomain
rhino3dm.Interval: Gets or sets the angle domain (in Radians) of this arc.
- StartAngle
float: Gets or sets the start angle (in Radians) for this arc segment.
- EndAngle
float: Gets or sets the end angle (in Radians) for this arc segment.
- AngleRadians
- StartAngleDegrees
float: Gets or sets the start angle (in Degrees) for this arc segment.
- EndAngleDegrees
float: Gets or sets the end angle (in Degrees) for this arc segment.
- AngleDegrees
float: Gets or sets the sweep -or subtended- angle (in Degrees) for this arc segment.
- Trim(domain)
Sets arc’s angle domain (in Radians) as a sub-domain of the circle.
- Parameters:
domain (rhino3dm.Interval) – 0 < domain[1] - domain[0] <= 2.0 * RhinoMath.Pi.
- Returns:
True on success, False on failure.
- Return type:
bool
- BoundingBox()
Computes the 3D axis aligned bounding box for this arc.
- Returns:
Bounding box of arc.
- Return type:
- PointAt(t)
Gets the point at the given arc parameter.
- Parameters:
t (float) – Arc parameter to evaluate.
- Returns:
The point at the given parameter.
- Return type:
- TangentAt(t)
Gets the tangent at the given parameter.
- Parameters:
t (float) – Parameter of tangent to evaluate.
- Returns:
The tangent at the arc at the given parameter.
- Return type:
- ClosestParameter(testPoint)
Gets parameter on the arc closest to a test point.
- Parameters:
testPoint (rhino3dm.Point3d) – Point to get close to.
- Returns:
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.
- Return type:
float
- ClosestPoint(testPoint)
Computes the point on an arc that is closest to a test point.
- Parameters:
testPoint (rhino3dm.Point3d) – Point to get close to.
- Returns:
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.
- Return type:
- Reverse()
Reverses the orientation of the arc. Changes the domain from [a,b] to [-b,-a].
- Return type:
void
- Transform(xform)
Transforms the arc using a Transformation matrix.
- Parameters:
xform (Transform) – Transformations to apply. Note that arcs cannot handle non-euclidean transformations.
- Returns:
True on success, False on failure.
- Return type:
bool
- ToNurbsCurve()
Initializes a nurbs curve representation of this arc. This amounts to the same as calling NurbsCurve.CreateFromArc().
- Returns:
A nurbs curve representation of this arc or None if no such representation could be made.
- Return type: