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 | |
102. Composite Curve | 14. Complex Chain |
104. Conic Arc: | |
106. Copious Data:
A MicroStation line string or shape element can have a maximum of 5000 vertices. If a copious data entity has more than 5000 vertices, it is translated as a complex chain or complex shape that contains multiple line strings. |
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108. Plane:
Only bounded planes with a positive bounded area (form 1) are translated. In this case, the bounding curve is interpreted as closed. For example, if the bounding curve is a composite curve it is interpreted as a complex shape rather than a complex chain. |
43 |
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
Form 1 ruled surfaces are approximated as form 0. The parameterization of the ruled surfaces is always taken from the rail curves as specified in form 0. |
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. |
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 | |
144. Trimmed Parametric Surface
Trimmed parametric surface entities are translated to B-spline surface elements with boundaries. Since ProStructures supports only polygonal surface boundaries, curved boundaries are approximated by stroking the curves to polygons. |
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 | |
164. Solid of Linear Extrusion | |
186. Manifold Solid B-rep Object | Type 2 SmartSolids |
202. Angular Dimension | Angular Dimension or primitive elements, such as lines or text. |
206. Diameter Dimension | Diameter Dimension or primitive elements, such as lines or text. |
208. Flag Note | Flag Note or primitive elements, such as lines or text. |
210. General Label | General Label or primitive elements, such as lines or text. |
212. General Note — Forms 0-8, 100-102, 105 | 17. Text |
214. Leader | Leader or primitive elements, such as lines or text. |
216. Linear Dimension | Linear Dimension or primitive elements, such as lines or text. |
218. Ordinate Dimension | Ordinate Dimension or primitive elements, such as lines or text. |
220. Point Dimension | Primitive elements, such as lines or text |
222. Radius Dimension | Radius Dimension or primitive elements, such as lines or text. |
228. General Symbol | General Symbol or primitive elements, such as lines or text. |
230. Sectioned Area | Boundary elements enclosing a hatch pattern. |
308. Subfigure Definition
The Subfigure Output control in the IGES Import Settings dialog sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
1. Cell (in attached cell library)
34. Shared Cell Definition |
312. Text Display Template | Supported |
314. Color Definition | Supported |
320. Network Subfigure Definition
The Subfigure Output control in the IGES Import Settings dialog sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
1. Cell (in attached cell library)
34. Shared Cell Definition |
402. Associativity Instance:
The Drawings control in the IGES Import Settings dialog sets how view visibility is handled. See also Drawing sheets and view visibility. |
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404. Drawing
The Drawings control in the IGES Import Settings dialog sets whether drawing entities are ignored, merged into the DGN file, or have a sheet file created with appropriate attached views. See also Drawing sheets and view visibility. |
Supported |
406. Property: | |
408. Singular Subfigure Instance
The Subfigure Output control in the IGES Import Settings dialog sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
2. Cell (placed in attached cell library)
35. Shared Cell Instance |
410. View | 5. Saved View |
412. Rectangular Array Subfigure Instance
The Subfigure Output control (IGES Import Settings dialog) sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
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
The Subfigure Output control (IGES Import Settings dialog) sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
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
The Subfigure Output control in the IGES Import Settings dialog sets how subfigures are translated. If no cell library is attached, Subfigure Output is set to shared cells. |
2. Cell (in attached cell library)
35. Shared Cell Instance |