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Blender Cad request

Posted: Wed Feb 04, 2004 9:47 am
by Al-Capone
I would like to see is a 3D Array fuction, I know that ACad has this but for circular it can't do the same while also changing elevation, say like a spiral stair for example. I would also like to see an array combination scaling/offset feature as well.

AutoDesk also lack extrusion as well, it would be nice to have a Cad function that can also be seen in 3ds, like extruding and arraying along path and lines, this would also include scaling, twisting, pivet, bevel and center position of line. I know Acad can also extrude along path but I don't think it includes the other options with it.

One of the most pain in the ass features in Acad is the UCS and WCS, I'm hoping that this can be left out as a cad default and have the orginal Blender cordiance as default. I find this to be the problem when doing such things such as edgesurf.

The option of 2d lines and 3d lines is also a problem with Acad, I would prefer that a line would be a line no matter where it's at, can't see the advantage of such features. Cad programs also picky about close poly lines, hoping that it would let you know and give you an option like revsurf or spin would be welcome.

Last but not least, boolean operation on mesh, face and surface is also impossable to do with Acad, say like you did a edgesurf and wish to put some holes in there with subtraction.

Other ideals including multipal trim, extend, scales, extrude, glue etc. etc.

"Note: I only had a year training in AutoCad, if what I said above can be done in Acad 14 and below, please help pointing out my ignorenct"

Re: Blender Cad request

Posted: Wed Feb 04, 2004 10:08 pm
by knoxer
Al-Capone wrote:I would like to see is a 3D Array fuction, I know that ACad has this but for circular it can't do the same while also changing elevation, say like a spiral stair for example. I would also like to see an array combination scaling/offset feature as well.
This would be cool. Not a feature that would be often used (I don't think) but definately a lot simpler than doing the (2D) circular array then moving each piece to the proper elevation.
Al-Capone wrote:AutoDesk also lack extrusion as well, it would be nice to have a Cad function that can also be seen in 3ds, like extruding and arraying along path and lines, this would also include scaling, twisting, pivet, bevel and center position of line. I know Acad can also extrude along path but I don't think it includes the other options with it.
I'm not sure I completely understand all of that, but AutoCAD is definately lacking when it comes to 3D in general...
Al-Capone wrote:One of the most pain in the ass features in Acad is the UCS and WCS, I'm hoping that this can be left out as a cad default and have the orginal Blender cordiance as default. I find this to be the problem when doing such things such as edgesurf.
AMEN!!!!!
Al-Capone wrote:The option of 2d lines and 3d lines is also a problem with Acad, I would prefer that a line would be a line no matter where it's at, can't see the advantage of such features. Cad programs also picky about close poly lines, hoping that it would let you know and give you an option like revsurf or spin would be welcome.
I never understood why they distinguished 2D and 3D lines either...
Al-Capone wrote:Last but not least, boolean operation on mesh, face and surface is also impossable to do with Acad, say like you did a edgesurf and wish to put some holes in there with subtraction.
Yeah, surfaces are not easily modified in AutoCAD, I think the Blender will handle this a lot better since that's what it's made for.

In general I think it would be best to stay away from making BlenderCAD like AutoCAD (autocad did get a few things right though). Lets strive to match the features of the true 3D CAD programs like SolidWorks and Autodesk Inventor.

Re: Blender Cad request

Posted: Wed Feb 04, 2004 10:10 pm
by knoxer
The forum messed up and I double posted... oops....