X3D Converter

Table of Contents

• Overview
• Scope
• X3D Measurement Units
• Parameters
  • Exporter Parameters
• Known Limitations

Overview

X3D_Reader can read and X3D_Writer can write files in X3D format (ISO/IEC 19775).

Scope

Import	Export
polygonal representations assembly structure names user-defined properties colors, materials	polygonal representations assembly structure names user-defined properties colors, materials, textures

X3D Measurement Units

In accordance with the X3D format specification, 3D coordinates in X3D files are to be stored in meters. Therefore during export CAD Exchanger converts values in polygonal representation (stored in millimeters as explained here) dividing them by 1000.

See also

Measurement Units

Parameters

Exporter Parameters

The X3D export parameters are controlled by X3D_WriterParameters. The following table contains a list of parameters for X3D export:

Parameter	Default value	Description
LengthUnit()	Base_LU_Meters	See Base_WriterParameters::LengthUnit().
PreferredLOD()	ModelData_RM_Medium	See Base_WriterParameters::PreferredLOD()

Known Limitations

• X3D supports user-defined properties with MetadataString node. It should be written in XML file with the value attribute with double quotes surrounded by single quotes (i.e. value='"string"'). Due to limitations of the currently used XML formatter this is not possible to achieve, hence user-defined properties are not being exported.
• X3D models may contain textures but X3D_Reader currently doesn't read them.