alcune domande su autocade

[geometra90]

Hello.
I would like to point out that I am new and I do not know if this is the appropriate section but I would need some definitions that I have not yet understood
And if you could help me, I'd be very grateful.
starting from the fact that they are at first arms and I still have much to learn I would like to understand what you mean by wireframe model, if you can make the union between two or more figures, if the loft command is used only for cross sections and especially what does not have a mesh model unlike a solid
Thank you in advance for the answers

 

[gil]

wireframe is a simple view. fine for 2d sketches, in the 3d autocad simplifies the representation of the object using a limited number of lines. you are forced to richen you when the pc is in difficulty in managing solid 3d. otherwise in modeling you prefer other views.

What does figure mean? It is possible to combine two solids, even in a certain sense, even two flat figures. but you better define this question.

extrude allows to extrude a flat figure, but this is always perpendivolous on the plane of the figure. Moreover along the extrusion line the section of the created solid will be constant.
loft is a more complex command to use, but it allows to exceed the above limits of extrude.

a mesh is a superifice. it is possible to join more mesh to create 3d figures like a cube or a cilindo. with the use of mesh the object will be empty inside, will not have properties like weight. wrapped them is used because they allow to achieve certain results in a simpler way than a solid. but I don't know if they have other advantages.

 

[Tristan]

I say mine.

starting from the fact that they are at first and I still have a lot to learn I would like to understand what you mean by wireframe model

it is a simple and light display style (textually it means "iron thread"); only the edges are visible and therefore allows to see through solids and surfaces. if the model is complex you will understand very little...

it is possible to make the union between two or more figures

if they are solid or regions, with the command you join

the loft command is used only for cross-sections

No, not necessarily.

what does not have a mesh pattern unlike a solid

He doesn't have a mass, it's an empty box. Usually it is used for organic modeling or free form

 

[Cristallo]

I'm sorry to punctuate and debate at gil, but there are some (many) inaccuracies that are good to correct for posteriors, and for geometressa :smile:

wireframe is a simple view. fine for 2d sketches, in the 3d autocad simplifies the representation of the object using a limited number of lines. you are forced to richen you when the pc is in difficulty in managing solid 3d. otherwise in modeling you prefer other views.

you are not at all "forced" when the pc is in trouble. It's a way of representation, I prefer to use it all the time and resort to other views just to have an immediate visual confirmation.
in other views (for example) it becomes very difficult to determine which points you are selecting with the osnap, being the "edge" hidden by the type of display.
If you set a visualization with highlighted edges you will simply have a mix between wireframe and shaded, which becomes even less practical than pure wireframe.

extrude allows to extrude a flat figure, but this is always perpendivolous on the plane of the figure. Moreover along the extrusion line the section of the created solid will be constant.

Wrong. Extrusion without parameters, extrudes perpendicularly and with constant section.
extrude with path parameter extruded according to an arbitrary path, therefore also inclined, curved, edged etc.
extrude with loft allows to vary the section according to a corner during extrusion.
is the antesignano of the sweep command

loft is a more complex command to use, but it allows to exceed the above limits of extrude.

loft is a simple command, which gives a series of cross sections, reconstructs the solid that contains them. you can get different solids depending on loft options (rectline, spline etc).
but nothing has to do with extrude, they do two completely different operations.

 

[geometra90]

thank you very much for the answers, you are very kind
so just a precision.. Does the wireframe model contain super factories consisting of curved lines points describing the edges of the right object?
Also I should create a hole in a wall, can I use the boolean operation subtract?
and if I have to build a variable section cover I can do it with which command?

 

[Tristan]

Does the wireframe model contain super factories consisting of curved lines points describing the edges of the right object?

Of course. is only a different way to represent the solid/surface

Also I should create a hole in a wall, can I use the boolean operation subtract?

Yes, yes.

and if I have to build a variable section cover I can do it with which command?

How is he covered? Do you have an image?

 

[geometra90]

Thank you so much!
However I do not have an image unfortunately.. Can I do it with the sweep or revolution?

 

[Tristan]

without seeing how it is made I am roof it is impossible to answer

 

[geometra90]

without seeing how it is made I am roof it is impossible to answer

like thishttp://www.archinfo.it/01net/photo_library/945/people_mover_09_nl2512_420x270.jpg

 

[Cristallo]

to do that, in 3d, you should create a 3d polyline of the metal rib axis, and then "sweeppare" the tube section along the axis.
same speech for the upper plate.
but then to insert the joints and the countervents, you will need so much practice in 3d. is not so immediate.