On 01/01/2017 09:07 AM, Marijan Pollak wrote:

The following thread has some discussion about this topic
http://forum.openscad.org/export-function-td15428.html

This would be very welcome, at this point it would mean
either making CGAL (http://www.cgal.org/) faster for CSG
operations or find/implement a different library to do
CSG.

ciao,
Torsten.

Note this is OpenSCAD. Open SCADA is a different, unrelated, project.

rightside left.

I don't know what you mean. The Syntax and layout are similar to C and is
parsed top to bottom, left to right.

No, Austrians.

On 1 January 2017 at 08:07, Marijan Pollak oberonmp@gmail.com wrote:

Hello Thorsten, unfortunately those people write about Security risk which
I do not understand.
1st. Import and export are possible only from same folder where SCADA
programs are.
2nd. If I cannot read in unknown files, how can program know what to
delete/rewrite?
3rd. Is simple confirmation from user not possible in case of new file
writting?
4th. User may have to delete some files by hand if not required.
I suceeded to open file in Alphanumeric field, therefore it should be
possible to compose file name
by program, export it and then import it again and when cut export to
different file.
​As You can see I need to cut my turbine in at least 6 ways, however with
just 4 parts I
can repeat this group 3 times and compose large turbine of 50 cm diameter.
I would however like  to cut center as circle, as large as can be printed
on 18 x 18cm x 25cm
workspace of 3D printer. However all pieces have to be securely hooked one
to another.
Likewise, it would be usefull if I can construct the Knife  and then reuse
it as many times as required.
Present system of cutting requires 2 separate cuts on two clones of same
object, why it cannot be
done in 1 cut and then separate pieces into two objects, since one side of
cut is always removed, therefore computer is able to detect  which is Male
and which is Female side.
Alternative would be to attach each side of Cut  to part it belong to and
remove just "Kerf" distance
which then cannot be negative, of course.
It would be great help to be able to  determine cut lines and then situate
hooks at the middle as two
pairs of T  profiled connectors  or one pair of joined cylinders then such
twinned cylinders can be used to extract difference that was cut out. with
exact fit it would be as if it was made from one piece, right?
Same way central circle can be cut out and Difference taken out of clone.
However at least 3 holes must be made on separation circle, where it would
be fixed by screws.
Any advice would be most welcome. This 2D drawing was made by program, can
it be repeated in
SCADA and then extruded? I would neeed many sizes  of turbines with same
wall thickness of Air
Chambers. but it would alsi be usefull that botom would not be flat. I can
therefore first form bottom
by following paralel linesand pulling half circle between, and then extrude
same lines up.
But after this I have to cut it all up.........
I promise You huge donation when my turbines start to sell, or one WPS of
2.5 KW that You can use or sell to someone for few 1000€'s.
Is it a deal?
Sincerely, Marijan Pollak

On Sun, Jan 1, 2017 at 2:10 PM, tp3 [via OpenSCAD] <
ml-node+s1091067n19830h36@n5.nabble.com> wrote:

--
Regards from Croatia, the Homeland of one of greatest inventors from 19th
and 20th Centuries, Engineer Nikola Tesla!

TlocrtRasjeckan02.jpg (1019K) http://forum.openscad.org/attachment/19832/0/TlocrtRasjeckan02.jpg

--
View this message in context: http://forum.openscad.org/Export-Stl-File-module-tp19829p19832.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Hi, I did not know the difference exist. It may be true that it is parsed
top to bottom, but somehow I
found that what is on the bottom of Module is executed first, then line up
and each line is executed right to left.
There is Example:
module Cuts(){

imaga=1      // Last of all , program is notified that file exist and need
not to be drawn again

//Here cut object has to be exported

;

angleMaleCut(cut = yCut1);    // Then male cut is made

angleMaleCut(cut = yCut2);

angleMaleCut(cut = yCut3);

translate ([0,0,0]);                    // It is aligned to center line

osnova();                                  // again clone or duplicate is
imported or drawn

angleFemaleCut(cut = yCut1); // then female cuts are made

angleFemaleCut(cut = yCut2);

angleFemaleCut(cut = yCut3);

translate ([-15,0,0]);                  // It is then moved  15mm on
Xcoordinate

Rotate (0,120,0,);                    // Second, iti s rotated in y  on
horizontal plane

osnova();                                  // First, .stl file is
Imported  or drawn

}

//

module osnova()

{//"scadturbine.stl

echo("Object to cut=",objekt, "ima =", imaga);

if(imaga == 0){drawObject();}

else {import(objekt);}

}

in case there is more then one instruction on one line, they are executed
rightmost first

then left neigbour  one by one .

That is consistent with bottom to top execution.

I shall check again by puting some ECHO commands

However, since Imaga =1; is first command If program would work normal way,

then ECHO would not report Zero in module osnova.

Ups!

.It seems that variables from program were not passed to Module unless
explicitely mentioned in Module

Parameter lists,which means I cannot change value in Module to be generally
available at new state?

Maxbe those multiple instractions were permutable without change of result?

So how to do it? must put imaga = imaga, in Module parameter list?

Or something else?

Sincerely, Marijan Pollak

On Sun, Jan 1, 2017 at 3:37 PM, nop head nop.head@gmail.com wrote:

--
Regards from Croatia, the Homeland of one of greatest inventors from 19th
and 20th Centuries, Engineer Nikola Tesla!

Firstly statements are not executed as such. They build a tree structure of
geometric primitives and boolean operations. The boolean operations can be
done in any order as long as the operands (which are lower branches in the
tree) have been computed first. So yes things on the right are lower nodes
on the tree and must be computed first. And yes, compound statements like
union() that can span many lines will compute all the things lower in the
tree before the union is computed.

Secondly, OpenSCAD has lexical scope, very much the same as C, so a
variable (which are actually named constants) defined in one module cannot
be accessed in a another. But you can define constants at file level scope,
so if you move imaga=1 outside the Cuts module it will be accessible in
osnova. Or you can declare it as a parameter of osnova and pass it each
time you call it.

On 1 January 2017 at 17:25, Marijan Pollak oberonmp@gmail.com wrote:

On 01/01/2017 04:58 PM, Marijan Pollak wrote:

I don't see the security part as the main topic for the
export feature. Direct export does not fit into the whole
model of how OpenSCAD works, it generates a data structure
that describes a 2D or 3D model, it's not a program having
a runtime.

The basic idea to handle multi part models is to add this
information to the data structure and have the export
function pick that up to export all parts in one step.
Details are still to be defined.

Until this is done, there's a reasonable workaround
described in the FAQ
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/FAQ#Export

ciao,
Torsten.

Thanks for clarification. So how can I signal from module what it has done?
I tried to access imaga that is defined in main program in Module but until
I put it as parameter, it was not recognized.
Are Functions different?
Unfortunately what someone  made as three way Puzlecut do not work.
I guess I have to export File after first cut and Import it before next.
Undfortunately Export is not there for some obscure reason.
I would have to find source of Editor and clone that function to export
.stl file
and make new Module Export ("filename.stl"), or can You do it for all of us
that
need such thing?
So far  I find Compiler unpredictable and not explaining errors, which
mostly
happen someplace in the Library. I also do not know where to put ";" at end
of
command or module call and where it is forbidden. I decided to put it
everywhere
but sometimes it cause errors?
Perhaps some more time and I would catch rules, I start by doing sipmple
things,
like creating plate and cutting it,  and when I would have that Module
ready, I can
build up on that plate something more complicated, cut this and so on.
Unfortunately I am half blind and did not do much programming, mostly I was
using
GFA32 Basic, which is not OO Language, but then Open SCAD is not either.
I would need to have access to STL file parameters as well as come
rudimentary
CFD program and then I would be able to make it do all calculations in
paralel and
export results as file that can then be corelated to Stl File parameters
and Cfd
parameters to find out which parameters produce better result.
Than thing can be "Evolved" to best possible solution or parameters. It is
possible
to Cross bred several existing solutions and get something entirely new.
Regards, Marijan Pollak

On Sun, Jan 1, 2017 at 7:16 PM, nop head nop.head@gmail.com wrote:

--
Regards from Croatia, the Homeland of one of greatest inventors from 19th
and 20th Centuries, Engineer Nikola Tesla!

I have never seen anything like this, therefore I do not understand.
Is it that You are adding this to Editor as Plugin of sort so .stl Button
would do it when pressed, instead of writting out just one file?
That we call "going hand to pocket around backside"......
So it stay this way untill I change it? Maybe I can do it, just I did not
find way to cut things precisely to some 12 parts, and if they would
stay together in one file then it is not problem to do it even just using
the button, problem is, once I cut thing in two, I can export part that
need no further cutting and remove it, and cut remainder again.
I do not know if SCAD treat result of cutting as one or two objects,
and how can I select one piece I want to export. If I would be able to
do it programatically, then there is no need to do it complicated way.
Where is that Editor source code? I think making Module should not
take more than half an hour, I just have to ape what that button click
do, after its module or function  receive file name to Export.
Or someone sit on it? That assuming It is same as any other Module
in Open Scad.....

On Sun, Jan 1, 2017 at 9:15 PM, Torsten Paul Torsten.Paul@gmx.de wrote:

--
Regards from Croatia, the Homeland of one of greatest inventors from 19th
and 20th Centuries, Engineer Nikola Tesla!