Revit 2025.3 API

Transform2D Class

An affine transform of 2D Euclidean space.

Inheritance Hierarchy

SystemObject
Autodesk.Revit.DBTransform2D

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)

Syntax

public class Transform2D : IDisposable

Public Class Transform2D
	Implements IDisposable

public ref class Transform2D : IDisposable

type Transform2D = 
    class
        interface IDisposable
    end

The Transform2D type exposes the following members.

Constructors

	Name	Description
	Transform2D(Transform2D)	The copy constructor.
	Transform2D(UV, UV, UV)	Constructs the transformation by specifying the vectors and the origin.

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Properties

	Name	Description
	BasisU	The image of (1, 0) under OfVector(UV).
	BasisV	The image of (0, 1) under OfVector(UV).
	Determinant	The determinant of this transformation.
	HasReflection	The boolean value that indicates whether this transformation produces reflection (i.e., is orientation-reversing).
	IsConformal	The boolean value that indicates whether this transformation is conformal.
	IsIdentity	The boolean value that indicates whether this transformation is an identity.
	IsTranslation	The boolean value that indicates whether this transformation is a translation.
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity.
	Origin	The image of (0, 0) under OfPoint(UV). This defines the translational part of the transform.
	Scale	The real number that represents the scale of the conformal transformation.

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Methods

	Name	Description
	AlmostEqual	Determines whether this transformation and the specified transformation are the same within the tolerance (1.0e-09).
	Assign	Assigns values from the input transformation to this transformation.
	CreateIdentity	Creates the identity transformation.
	Dispose	Releases all resources used by the Transform2D
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
	GetHashCode	Serves as the default hash function. (Inherited from Object)
	GetInverse	Gets the inverse transformation of this transformation.
	GetType	Gets the Type of the current instance. (Inherited from Object)
	Multiply	Multiplies this transformation by the specified transformation and returns the result.
	OfPoint	Applies the transformation to the point and returns the result.
	OfVector	Applies the transformation to the vector and returns the result.
	PostScale	Scales both the linear and translational parts of this transformation and returns the result.
	PreScale	Scales the linear part of this transformation and returns the result.
	SetToIdentity	Set this TrfUV to the identity transform.
	ToString	Returns a string that represents the current object. (Inherited from Object)
	TransformUVDomainIfPossible	Transforms an envelope (BoundingBoxUV) for one surface to an envelope for a coincident but differently parameterized surface.

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Remarks

An affine transform is a linear transform plus a translation (which may be zero). Some functions only accept certain kinds of transform (e.g., rigid motion, conformal, non-singular, etc.).

Reference

Autodesk.Revit.DB Namespace

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