![]() ![]() sizes =, ,, , ] // One option to solve this is by using a recursive module // that creates a new translated coordinate system before // going into the next level. All cylinders are to be stacked above each other (with // an additional spacing of 1 unit). ![]() So I decided to write some code as a simple illustration of how to make a 3D part in OpenSCAD using ezDXF and Python 3. ![]() In fact, OpenSCAD makes the process almost trivial, and FreeCAD includes an OpenSCAD workbench if you prefer that software. sin(), cos(), round()), most of which we will get to know. And obviously OpenSCAD is one of the main ways makers like to generate 3D content from DXF files. In our case, we define the variable radius and give it a value that increases steadily as the loop progresses. Define the sizes for the cylinders, first value is the // radius, the second is the height. Apart from our own custom functions, OpenSCAD offers a whole set of predefined functions (e.g. ) allows us to define one or more variables which are set anew in each loop iteration, just like it happens with the loop variable itself. function add ( v, i = 0, r = 0 ) = i < len ( v ) ? add ( v, i + 1, r + v ) : r input = output = add ( input ) echo ( output ) // ECHO: 40 //- add2 - // An even simpler non recursive code version of add explores the // the matrix product operator function add2 ( v ) = * v echo ( add2 ( input )) // ECHO: 40 // add2 works also with lists of vectors input2 =, , ] echo ( add2 ( input2 )) // ECHO: echo ( add ( input2 )) // ECHO: undef // Why? //- add3 - // With a little more code, the function add may be used also // to add any homogeneous list structure of floats function add3 ( v, i = 0, r ) = i < len ( v ) ? i = 0 ? add3 ( v, 1, v ) : add3 ( v, i + 1, r + v ) : r input3 =, 1 ], , 2 ], , 3 ] ] input4 =, 1 ], , 2 ], , 3 ] ] echo ( add3 ( input3 )) // ECHO:, 6] echo ( add2 ( input3 )) // ECHO: undef // input3 is not a list of vectors echo ( add3 ( input4 )) // ECHO: undef // input4 is not a homogeneous list Cumulative sum Edit Download OpenSCAD OpenSCAD 2021. It is free software and available for Linux/UNIX, MS Windows and Mac OS X. Create a simple recursive function that adds the values of a list of floats // the simple tail recursive structure makes it possible to // internally handle the calculation as loop, preventing a // stack overflow. OpenSCAD is software for creating solid 3D CAD objects. ![]()
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