OpenSCAD 2018 Command line

2

First, I'm using Linux Mint 18.3 (Sylvia). Until now, I've been using OpenSCAD with the GUI and never experienced issues. Now I try to start OpenSCAD from the command line, but it always opens an empty file, even if a file with the specified name exists.

Since I have a rather big script, I'd like to generate the STL's via the CLI. Due to this error, I can not even do any tests for parameter passing.

What I'd like to do is to issue a command (flom the command line or in a shell script) that says "Set objectID to 1, render and export the result to stl".

Here is my M(N)WE:

// test.scad

objectID = 2;


if (objectID == 1)  
difference(){  
    cylinder(d=20, h=50, center=true);  
    cylinder(d=16, h=50.2, center=true);      
}

else if (objectID == 2)  
difference(){  
    cube(50, center=true);  
    cube([35,35,70], center=true);  
}

Any help will greatly be appreciated.

Hermann Gebhard

Posted 2019-02-19T10:26:43.260

Reputation: 41

1If I understand the question right, we are right at the edge of where it is 3D printing and starts to be programming, but still inside: getting the STL is clearly on the OK side imho – Trish – 2019-02-19T11:51:30.223

1Did you run a full cmd-line, e.g. openscad test.scad -o test.stl ? – kintel – 2019-02-19T14:45:58.730

Everything in the GUI works fine. – Hermann Gebhard – 2019-02-19T15:31:05.843

Yes, I ran a full command line and got an error "could not open file" although the specified SCAD source file exists (copied file name from ls output). – Hermann Gebhard – 2019-02-19T15:33:03.557

have you tried a fully qualified path? – esoterik – 2019-02-20T22:46:27.680

Answers

2

I could finally solve the issue. Calling openscad from command line with parameters does NOT work with the AppImage I used. It works fine with a "standard" installation, though.

Thanks for your support.

Hermann Gebhard

Posted 2019-02-19T10:26:43.260

Reputation: 41

3

You can specify variable values from command line using:

openscad     ...\
             ... \
             [ -D var=val [..] ] \
             ... \
             ... \
             filename

See the OpenSCAD Manual.

Bouc

Posted 2019-02-19T10:26:43.260

Reputation: 31