topic Re: Help! Setting certain perspective in AutoCAD Forum

Help! Setting certain perspective

Anonymous — Tue, 15 Dec 2020 16:29:20 GMT

Hi,

I have been assigned an project to illustrate a bunch of .stp-files that are to be made in to PDF's.

The 3D models needs to be in a certain perspective and angle, see information in picture. The information is from Illustrator and not made by me but the project manager. I can't make it work 😞

I'm working in AutoCad 2016, students version.

How do I make a 3D model with this exact information? Later on the lines should be 0,15 points.

I would love to import in to Illustrator later on for future add-ons and such.

Please help, I've already wasted to many hours on this...

Re: Help! Setting certain perspective

Patchy — Tue, 15 Dec 2020 17:15:27 GMT

Just a wild suggestion here, not sure it will help what you're looking for.

Draw the Cube in a drawing.

Make a new one and xref the 1st one in, copy a bunch of them and rotate each to match your specs.

in layout, make view ports for each frame.

Re: Help! Setting certain perspective

Kent1Cooper — Tue, 15 Dec 2020 17:16:19 GMT

It would take a little setting up to determine the appropriate points [draw a Line, and Rotate it in each of the directions about the same endpoint], but once you do, use a DVIEW command and the POINTS option to specify relative positions of target and camera.

Re: Help! Setting certain perspective

leeminardi — Tue, 15 Dec 2020 18:55:13 GMT

Extending lines in the sketch that are parallel on the true object will indicate where one of the vanishing points is located for the perspective drawing. This could be helpful in approximating the elevation of the view point when using the Free Orbit view feature. Once you have the horizon positioned you can do a horizontal rotation with Free Orbit to approximate the final orientation. There may be some scaling issued to be addressed.

A more accurate method would be to use the Perspective Match feature of 3ds Max to locate the camera, its orientation and lens.

Re: Help! Setting certain perspective

Kent1Cooper — Tue, 15 Dec 2020 19:39:11 GMT

Are they really supposed to be in perspective [with non-parallel regression to vanishing points]:

or are they supposed to be axonometric projections [with all elements parallel to a given axis also parallel to each other in the drawing]?

Re: Help! Setting certain perspective

Anonymous — Wed, 16 Dec 2020 11:15:14 GMT

Hi,

Good question, the answer must be axonometric projections.