Projection vs. section. What is the difference?


(Jerry Bakowski) #1

Hello,
What do you mean by these terms, “projection” and “section”? I see that setting line print width for both doesn’t make sense as both the “section” and “projection” are displayed with the same line width. I have a wall definition like this:


As you can see all the parameters are “by layer”, except width for section. “By layer” width is set to “hairline”. Then, when at the layout what can we see? The “projection” and “section” lines are the same width…:

So, what is the difference between these two terms? I thought the “section” is when we cut something, and “projection” when we see something… With a plan I thought cutting a wall means we have a “section” for solid part of the wall and a “projection” for windows opening and so on. Is it true?
And, by the way, VA permanently “forgets” setting for projection print width line - I set it “by layer” and every time I want to change someting in the definition it gets blank:

Cheers, Jaro


(Jerry Bakowski) #2

And small addendum. I have changed the bottom offset of the levels (there are 2 levels, the upper one is on the pictures). The same definitions, the same model:the window on the right looks as it should, the rest is not correct…


It looks like the lower level display overrides the upper one.
Cheers, Jaro


(Enric Marquès) #3

Hi @jerry.bakowski,

Have you enabled “Print Preview”? In Rhino, line widths are only used when printing or when “Print Preview” is enabled:

If “Print Preview” is not enabled, lines use the thickness specified in the display mode.

Enric


(Enric Marquès) #4

Hi @jerry.bakowski,

I cannot reproduce this issue. Can you send me the model with the setting changed? Let mw know which style to look at.

Thanks,

Enric


(Enric Marquès) #5

Hi @jerry.bakowski,

Can you please send me the model to visualarq@asuni.com?

Thanks,

Enric


(Jerry Bakowski) #6

Thank you, Enric,
I have just sent the model. But definitely I think it has something in common with the lower level display, see the picture. I have changed the colour of the layer (now red) and we can see red lines just below the section:


Regards, Jaro


(Jerry Bakowski) #7

To whom it may concern :wink:
The problem is partially solved, or explained: it is a matter of the OpenGL driver, the printout is as it should be.
Regards, Jaro