Most of the dress-up options are not available, dimensions may be inaccurate, and some irregularities in the geometry may appear. Views from CGRs aren’t nearly as flexible as Exact views from parts.
No more errors and now there are views to work with. This will allow CATIA to generate drawing views from CGRs. To get a drawing view from a CGR, head to Tools > Options > Mechanical Design > Drafting> View and set the “View generation mode” to “CGR.” Okaying that box does not leave much of anything to work with. While the message gives some advice, none if it is actually the solution to this issue. Now, heading to the Drafting workbench and creating an automatic drawing with all views yields the error below: It doesn’t have a sheet of paper behind it like part and assembly do. This is one of the key giveaways that we’re working with CGR data.Īttempting to expand the CGR tree does nothing. Hovering over various surfaces of this part causes a lot of triangles to be visible. CGRs can’t be opened directly, so I’ve got this one in an assembly, where they’re typically encountered. In the image below, I’ve got a part that has been saved as a CGR. Drawings… generally do not want to cooperate with CGRs. Changing the shape data isn’t completely impossible, but for all intents and purposes, it’s not something that can be done. Assembly constraints generally won’t work. Now and then, for whatever reason, there is no CATPart file to work with and you’re stuck with a CGR. Anything that needs “real” geometry is not going to be happy with a CGR. Of course, there are some trade-offs: Namely, all the part feature data is gone. This is great for visualization – file sizes are way smaller and it’s easy to work with big assemblies without a huge performance hit. In general, the outside “skin” of a CATPart is tessellated and saved, leaving only the shape data behind. The CATIA Graphics Representation (CGR from here on out) is a lightweight file format for CATIA. In this post, we’ll look at how to create drawing views from lightweight CATIA files.
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