ISurfaceAssistant

References
public interface ISurfaceAssistant
Base interface for surface-like type assistants. Do not implement this interface from scratch, instead inherit from SurfaceAssistant.

Properties

IsReimplementation

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bool IsReimplementation { get; }
Gets whether or not this assistant is a type-safe re-implementation of a more generic assistant.

ReimplementationBase

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ISurfaceAssistant ReimplementationBase { get; }
Gets the base assistant (if any) this assistant is a re-implementation of.

Type

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Type Type { get; }
Gets the type associated with this assistant.

Methods

BoundingBox

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BoundingBox BoundingBox(object instance)
Gets the bounding box of a surface.
Parameters:
instance (object)Surface instance.
Returns: World axis aligned bounding box.

ConvertToBrep

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Brep ConvertToBrep(object instance)
Convert the instance into a Rhino Brep type which best describes the original instance. Note this method need not return a duplicate of the input, if a duplicate is required by the caller then a ReferenceEquals check must be performed.
Parameters:
instance (object)Instance to convert.
Returns: A Rhino Brep or null if there is no way to describe the surfacr geometry as a Brep.

EvaluateCurvature

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bool EvaluateCurvature(object instance, SurfaceLocus parameter, out SurfaceCurvature curvature)
Evaluate the surface curvature at the given parameter.
Parameters:
instance (object)
parameter (SurfaceLocus)
curvature (out SurfaceCurvature)
Returns: True on success, false on failure.

EvaluateNormal

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Vector3d EvaluateNormal(object instance, SurfaceLocus parameter)
Evaluate the normal vector of the surface at the given parameter.
Parameters:
instance (object)Instance of T.
parameter (SurfaceLocus)Surface parameter.
Returns: Normal at parameter, or Vector3d.Unset if the surface cannot be evaluated at the given parameter.

EvaluatePosition

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Point3d EvaluatePosition(object instance, SurfaceLocus parameter)
Evaluate the position of the surface at the given parameter.
Parameters:
instance (object)Instance of T.
parameter (SurfaceLocus)Surface parameter.
Returns: Point at parameter, or Point3d.None if the surface cannot be evaluated at the given parameter.

EvaluateTangent

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Plane EvaluateTangent(object instance, SurfaceLocus parameter)
Evaluate the tangent of the surface at the given parameter.
Parameters:
instance (object)Instance of T.
parameter (SurfaceLocus)Surface parameter.
Returns: Tangent at parameter, or Plane.Unset if the surface cannot be evaluated at the given parameter.

EvaluateUV

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bool EvaluateUV(object instance, SurfaceLocus parameter, out Vector3d u, out Vector3d v)
Evaluate the U and V directions of the surface at the given parameter.
Parameters:
instance (object)
parameter (SurfaceLocus)
u (out Vector3d)
v (out Vector3d)
Returns: True on success, false on failure.

Explode

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object[] Explode(object instance)
Explode a surface into smaller fragments, each representing a subtype of surface.
Parameters:
instance (object)Instance.
Returns: Array of subcurves.

ExplodeRecursive

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object[] ExplodeRecursive(object instance)
Explode a surface into the smallest possible fragments.
Parameters:
instance (object)Instance.
Returns: Array of subsurfaces.

FindClosestParameter

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SurfaceLocus FindClosestParameter(object instance, Point3d point)
Find the locus on the surface closest to a test point.
Parameters:
instance (object)Instance of T.
point (Point3d)Test point.
Returns: Parameter or SurfaceLocus.None if no parameter could be found.

FlipDirection

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object FlipDirection(object instance)
Flip the normal direction of the surface.
Parameters:
instance (object)Instance to flip.
Returns: Flipped surface or null if surface cannot be flipped.

IsClosed

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bool IsClosed(object instance)
Determine whether the surface is closed (i.e. solid).
Parameters:
instance (object)Instance of T.
Returns: Boolean value indicating closedness.

IsPlanar

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bool IsPlanar(object instance, double tolerance)
Determine whether the surface is planar.
Parameters:
instance (object)Instance of T.
tolerance (double)Maximum allowed planarity deviation.
Returns: Boolean value indicating planarity.

IsPlanar

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void IsPlanar(object instance, out Plane plane, out double deviation)
Determine the best fit plane for this surface.
Parameters:
instance (object)Instance of T.
plane (out Plane)Plane of curve or Plane.None if curve is not planar.
deviation (out double)Maximum deviation from plane.

Slice

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object[] Slice(object instance, Plane plane, double tolerance)
Compute the intersection between a surface and a plane.
Parameters:
instance (object)Surface.
plane (Plane)Plane.
tolerance (double)Absolute tolerance.
Returns: Array of any kind of curves.