Guide to Using DWG and Other Formats
Guide to Using DWG and Other Formats
Guide to Using DWG and Other Formats

Converting IGES Entities to MicroStation Elements

You can convert IGES entities (left) to the related MicroStation elements (right). The supported IGES entities are listed as follows:

IGES Entity

MicroStation Element

100. Circular Arc

  • Closed arc

  • Arc

 

  • 15. Ellipse

  • 16. Arc

102. Composite Curve

14. Complex Chain

104. Conic Arc:

  • Closed arc

  • Arc

 

  • 15. Ellipse

  • 16. Arc

106. Copious Data:
see footnote 137

  • Form 11, 12, 40, 63

  • Form 20-21, 31-38

 

  • 4. Line String, or 6. Shape, or 14. Complex Shape

  • Line segments

108. Plane:

43

  • Shape, Ellipse, closed B-spline Curve, or Complex Shape

  • Not supported

110. Line

3. Line

112. Parametric Spline Curve

27. B-spline Curve

114. Parametric Spline Surface

24. B-spline Surface

116. Point

3. Line (zero length)

118. Ruled Surface
see footnote 139

24. B-spline Surface

120. Surface of Revolution

24. Default is Surface of Revolution. However, if the Surface header is excluded, the entity is translated into a B-spline Surface. You can exclude the Surface header by choosing Settings > Exclude uStn Elements in the Import IGES dialog box.

122. Tabulated Cylinder

24. B-spline Surface

124. Transformation Matrix

Supported

126. Rational B-spline Curve (all forms)

27. B-spline Curve

128. Rational B-spline Surface (all forms)

24. B-spline Surface

130. Offset Curve

27. B-spline Curve

140. Offset Surface

24. B-spline Surface

142. Curve On A Parametric Surface

  • Curve present

  • uv_curve present

 

  • 27. B-spline Curve

  • 24. B-spline Surface Boundary

144. Trimmed Parametric Surface
see footnote 140

25. Bounded B-spline Surface if the 3D Design add-on is not present, or 3D Design boundary representation if 3D Design is present

150. Block

19. Solid (of projection)

152. Right Angular Wedge

19. Solid (of projection)

154. Right Circular Cylinder

23. Cylinder

156. Right Circular Cone Frustum

23. Cone

158. Sphere

19. Solid (of revolution)

160. Torus

19. Solid (of revolution)

162. Solid of Revolution

  • 19. Solid (of revolution)

  • 24. B-spline Surface (if cross-section is a B-spline curve)

164. Solid of Linear Extrusion

  • 19. Solid (of projection)

  • 24. B-spline Surface (if cross-section is a B-spline curve)

186. Manifold Solid B-rep Object

Type 2 SmartSolids

202. Angular Dimension

Angular Dimension or primitive elements, such as lines or text
see footnote 141

206. Diameter Dimension

Diameter Dimension or primitive elements, such as lines or text
see footnote 142

208. Flag Note

Flag Note or primitive elements, such as lines or text
see footnote 143

210. General Label

General Label or primitive elements, such as lines or text
see footnote 144

212. General Note — Forms 0-8, 100-102, 105

17. Text

214. Leader

Leader or primitive elements, such as lines or text
see footnote 145

216. Linear Dimension

Linear Dimension or primitive elements, such as lines or text
see footnote 146

218. Ordinate Dimension

Ordinate Dimension or primitive elements, such as lines or text
see footnote 147

220. Point Dimension

Primitive elements, such as lines or text

222. Radius Dimension

Radius Dimension or primitive elements, such as lines or text
see footnote 148

228. General Symbol

General Symbol or primitive elements, such as lines or text
see footnote 149

230. Sectioned Area
see footnote 150

Boundary elements enclosing a hatch pattern.

308. Subfigure Definition
see footnote 151

1. Cell (in attached cell library)

34. Shared Cell Definition

312. Text Display Template

Supported

314. Color Definition

Supported

320. Network Subfigure Definition
see footnote 152

1. Cell (in attached cell library)

34. Shared Cell Definition

402. Associativity Instance:

 

  • Graphic Group

  • Supported (view visibility)

404. Drawing
see footnote 154

Supported

406. Property:

  • Form 3. (level function)

  • Form 5. (line widening)

  • Form 15. (name)

  • Form 16. (drawing size)

  • Form 17. (drawing units)

 

  • Named level

  • 36. Multi-line

  • Supported

  • View in sheet DGN file

  • Units in sheet DGN file

408. Singular Subfigure Instance
see footnote 155

2. Cell (placed in attached cell library)

35. Shared Cell Instance

410. View

5. Saved View

412. Rectangular Array Subfigure Instance
see footnote 156

2. Cell(s) (placed in a rectangular array in attached cell library)

35. Shared Cell Instance(s) (placed in a rectangular array)

414. Circular Array Subfigure Instance
see footnote 157

2. Cell(s) (placed in a circular array in attached cell library)

35. Shared Cell Instance(s) (placed in a circular array)

416. External Reference (Form 1)

5. Reference

420. Network Subfigure Instance
see footnote 158

2. Cell (in attached cell library)

35. Shared Cell Instance