Table of Contents

BaseCurve

The base curve defining an extruded surface when it is swept.

Attributes

Name Type Use Description
GUIDRef ocx:guid optional A globally unique ID referring to an entity in the authoring application. The sending application creates and holds the GUID. Used to establish a unique reference to an entity persistent between applications.
id xs:ID required An identifier for an element unique within the scope of the XML file. Each id must be unique within a document. The attribute uses the standard XML 1.0 ID type as defined in the XML Schema specification. This attribute is required in many OCX XML elements and an application should generate them automatically.
is2D xs:boolean optional Set to True if the Curve3D is given in 2D space.
name xs:string optional An optional descriptive or display name.

Children

Name Type Cardinality Description
Circle3D Circle3D [1, ∞] A circle in 3D space.
CircumArc3D ocx:CircumArc3D_T [1, ∞] 3D Line/Arc representation. Represents a semicircle uniquely defined by three points in 3D space given by the start position, intermediate position and the end position..
CircumCircle3D ocx:CircumCircle3D_T [1, ∞] Definition of a circle in 3D space by a circum-circle of 3 points.
CompositeCurve3D ocx:CompositeCurve3D_T [1, ∞] The concept of a composite curve composed of a collection of Line3D, CircumArc3D and/or NURBS segments. Curves are sorted end to end and have C0 continuity across each segment in the CompositeCurve3D definition.
Ellipse3D Ellipse3D [1, ∞] An ellipse in 3D space.
Line3D ocx:Line3D_T [1, ∞] A straight line defined by two points.
NURBS3D ocx:NURBS3D_T [1, ∞] Non-Uniform Rational Spline Base curve definition.
PolyLine3D ocx:PolyLine3D_T [1, ∞] A list of 3D points defining a sequence of linear segments. Repeat the first position at the end of the last line segment to form a closed contour.
CurveLength ocx:Quantity_T [1, 1] The curve length computed by the sending application. Used to verify geometry reconstruction.
Description xs:string [0, 1] Contains a description of the component its parent represents. The description is stored as a string. You can use this element for whatever purposes you require. This element can be used inside many OCX XML elements but is optional.
CustomProperties ocx:CustomProperties_T [0, 1] Container for custom properties.
Schema version 3.2.0
Schema location https://3docx.org/fileadmin/ocx_schema/V320/OCX_Schema.xsd
Namespace https://3docx.org/fileadmin//ocx_schema//V320//OCX_Schema.xsd
Created 2026-09-10T10:07:41Z