Can someone please tell me what kind of projection (for example: isometric, dimetric, etc.) is this? (Please see below image for more detail)Thank you

Hello dery, I think it's a 3D point of view based on an isometric view modified so that to see better the different elements.If you do some 3D work, take a "standard" isometric point of view then modify it to see better the object(s).Launch the command DDVPOINT and see the angle : relative to UCSIf the object is tall then lower the "vertical" ( relative to UCS ) angle to see "inside" your object, 35.3° modified to 25° for example.If the object is flat then increase the "vertical" ( relative to UCS ) angle to see "on top" of your object, 35.3° modified to 45° for example.




philippe JOSEPH2019-10-18 13:01:25

I believe it could very well be a 2D isometric view using dimetric projection.

OK John and dery but I don't see equal the 2 angles "A" and "C".If it's a 3D point of viewon a 3D object, how can we set the DDVIEWPOINT angles to have a good dimetric view ?

In fact The angle "A" is greater than the angle "C" and you can check it for example by redrawing an object with a paper on your screen and measuring the angles or rotating that paper for a check on the other angle.

Valid for everybody : See the related CAD tip N° 4793:Dimetry - dimetric projection of AutoCAD 3D objects.

[QUOTE=philippe JOSEPH]OK John and dery but I don't see equal the 2 angles "A" and "C".If it's a 3D point of viewon a 3D object, how can we set the DDVIEWPOINT angles to have a good dimetric view ?[/QUOTE]
That's why ask the question because it does not look like an isometric projection to me.

[QUOTE=John Connor]I believe it could very well be a 2D isometric view using dimetric projection.[/QUOTE]
What do you mean by "2D isometric view using dimetric projection"? I don't understand. Do you mean the projection is combined? Clearly it can be seen that the drawing is not isometric projection.

dery2019-10-18 20:46:37

Dery, if you do a search on the internet you will find the various projections : isometric, dimetric with their diffrerent settings on the angles and length ( dimetric = 2 angles and length are equal, isometric = 3 angles and length are equal ).The drawings are not isometric and not dimetric but from a 3D point of view ( isometric modified to see better the elements ).Is your work 2D or 3D, I hope it's 3D because is now less work than the old way to draw.

philippe JOSEPH2019-10-18 22:46:52

And the answer is : ........................................................................ TRIMETRIC...........................................................

I never though the drawing was 3D.  Always looked 2D to me.

Yes John the "drawing" is 2D but I hope that the informatic work was done in 3D and not with the "like on the drawing board old way".I have never really done 2D isometric drawing or only for scheme or pipings with symbols but now with the "real" 3D we can do all this better and quicker.The level of detail shown on the drawings makes me think that it's real 3D.Eventually see my AutoCAD file : ORTHO-TO-ISO_01_B.dwgin the CAD/BIM Blocks library done in answer of a cad discussion.I had realized a 2D isometric drawing from an image file by doing real 3D solids and then FLATSHOT it. 
philippe JOSEPH2019-10-19 18:37:39