Point4d

Public Struct

Represents the four coordinates of a point in four-dimensional space.

The W (fourth) dimension is often considered the weight of the point as seen in 3D space.

Namespace: Rhino.Geometry

Assembly: RhinoCommon (in RhinoCommon.dll)

Syntax

[SerializableAttribute]
public struct Point4d : ISerializable, IEquatable<Point4d>,
  IEpsilonComparable<Point4d>, IFormattable

The Point4d type exposes the following members.

Constructors

Name

Description

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Public Method

Point4d(Point3d)

Initializes a new instance of the Point4d class from the coordinates of a point.

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Public Method

Point4d(Point4d)

Initializes a new point by copying coordinates from another point.

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Public Method

Point4d(Double, Double, Double, Double)

Initializes a new instance of the Point4d class based on coordinates.

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Properties

Name

Description

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Public Property

IsValid

Returns an indication regarding the validity of this point.

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Public Property
Static Member

Unset

Gets the value of a point with all coordinates set as RhinoMath.UnsetValue.

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Public Property

W

Gets or sets the W (fourth) coordinate -or weight- of this point.

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Public Property

X

Gets or sets the X (first) coordinate of this point.

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Public Property

Y

Gets or sets the Y (second) coordinate of this point.

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Public Property

Z

Gets or sets the Z (third) coordinate of this point.

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Methods

Name

Description

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Public Method
Static Member

Add

Sums two Point4d together.

(Provided for languages that do not support operator overloading. You can use the + operator otherwise)

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Public Method

EpsilonEquals

Check that all values in other are within epsilon of the values in this

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Public Method

Equals(Object)

Determines whether the specified System.Object is Point4d and has same coordinates as the present point.

(Overrides ValueType.Equals(Object).)

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Public Method

Equals(Point4d)

Determines whether the specified point has same value as the present point.

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Public Method

GetHashCode

Computes the hash code for the present point.

(Overrides ValueType.GetHashCode..)

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Public Method

GetType

Gets the Type of the current instance.

(Inherited from Object.)

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Public Method
Static Member

Multiply

Multiplies a point by a number.

(Provided for languages that do not support operator overloading. You can use the * operator otherwise)

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Public Method
Static Member

Subtract

Subtracts the second point from the first point.

(Provided for languages that do not support operator overloading. You can use the - operator otherwise)

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Public Method

ToString.

Returns the fully qualified type name of this instance.

(Overrides ValueType.ToString..)

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Public Method

ToString(String, IFormatProvider)

Formats the value of the current instance using the specified format.

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Public Method

Transform

Transforms the present point in place. The transformation matrix acts on the left of the point. i.e.,

result = transformation*point

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Operators

Name

Description

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Public Operator
Static Member
Addition

Sums two Point4d together.

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Public Operator
Static Member
Equality

Determines whether two Point4d have equal values.

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Public Operator
Static Member
Inequality

Determines whether two Point4d have different values.

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Public Operator
Static Member
Multiply(Point4d, Point4d)

Multiplies two Point4d together, returning the dot (internal) product of the two. This is not the cross product.

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Public Operator
Static Member
Multiply(Point4d, Double)

Multiplies a point by a number.

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Public Operator
Static Member
Subtraction

Subtracts the second point from the first point.

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