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Working with .igs files in C4D
I’ve converted .igs autocad files to .obj files by using Carrara and opened them up in Cinema 4D, assembled them into the finished model of a gas can and pump nozzle for animation of the can tipping and pouring. However, they come into Cinema as “surface nurbs” and when I attempt to make a cross-section of the pump using a Boolean Object, the entire object is removed, not just the part covered by the Boolean Object. The “surface nurbs,” as their filenames denote, appear to be independent and I’m not able to connect them or perform “Current State to Object” and cut the object in half to animate the working of the pump. Any suggestions?
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6 Replies
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If you converted the objects to .obj format then, AFAIK, they come in as polygon objects. I’m guessing that Carrera created the “surface nurbs” name, but they’re still regular polygon objects. You can check that easily enough by going into point/poly/or edge mode and selecting the objects.
OTOH, I have no idea why the boolean isn’t working. You might try unchecking the “high quality” box in the boolean object. If you can post the file somewhere I’d be happy to take a look at it.
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Adam,
Thanks for the information. I’m not sure what you mean by AFAIK. I’m not at my computer at home right now, but I will send the files in question this evening and thanks for offering to take a look at them. Each object comes in as separate “surface nurbs,” as Carrara labels them, and I can select individual polygons (in Polygon Mode) but it treats the object as a whole as indivisible it seems. I’ll try your suggestion of unchecking the “high quality” box when I get home tonight but so far I can’t come up with a way of getting a cross-section of this pump object without using a Boolean Object.
Ron
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AFAIK = internet acronym for “as far as I know”
Still happy to take a look, but first you might try running the optimize command on your objects. That will weld the points so that the polygons won’t be disconnected.
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Thanks for the tips. I’ll definitely try them out later. By the way, do I run the Optimize command on each “surface nurb” that makes up the object one at a time or on the grouped (null object) that includes all the surface nurbs that form the object?
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Actually, you should select all the surface objects that should compose one object and run the connect command. That’ll create one object composed of all the parts (but it won’t delete the originals). Then run optimize on the connected object.
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That may have been where I slipped up. I did run Connect on the objects, but deleted the originals, and did not run Optimize. I’ll run it after work and I really appreciate your suggestions. Maybe I can get this to go after all. I’m glad I just happened to have Carrara to convert the files in the first place. Thanks.
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