﻿ControlPoint Structure

# ControlPoint Structure

Represents control point geometry with three-dimensional position and weight.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
Syntax
```[SerializableAttribute]
public struct ControlPoint : IEpsilonComparable<ControlPoint>```

The ControlPoint type exposes the following members.

Constructors
NameDescription
ControlPoint(Point3d)
Constructs a new world 3-D, or Euclidean, control point. The 4-D representation of this is (x, y, z, 1.0).
ControlPoint(Point4d)
Constructs a new homogeneous control point, where the 4-D representation is (x, y, z, w). The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
ControlPoint(Point3d, Double)
Constructs a control point from a world 3-D, or Euclidean, location and a weight. The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
ControlPoint(Double, Double, Double)
Constructs a new world 3-D, or Euclidean, control point. The 4-D representation is (x, y, z, 1.0).
ControlPoint(Double, Double, Double, Double)
Constructs a new homogeneous control point, where the 4-D representation is (x, y, z, w). The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
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Properties
NameDescription
Location
Gets or sets world 3-D, or Euclidean location of the control point.
Unset
Gets the predefined, unset control point.
Weight
Gets or sets the weight of this control point.
X
Gets or sets the X coordinate of the control point.
Y
Gets or sets the Y coordinate of the control point.
Z
Gets or sets the Z coordinate of the control point.
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Methods
NameDescription
EpsilonEquals
Check that all values in other are within epsilon of the values in this
Equals(Object) (Inherited from ValueType.)
Equals(ControlPoint)
Determines if two points exactly match.
GetHashCode (Inherited from ValueType.)
GetType (Inherited from Object.)
ToString (Inherited from ValueType.)
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Version Information

#### Rhino for Mac

Supported in: 5.4

#### Rhino for Windows

Supported in: 6.2