can you create a subroutine?

billy2 · July 2022

Let's say I want to format the output for a vector

function printVector(v) {<br>   println("vector :"~roundToPrecision(v[0], 4)*1000~", "~roundToPrecision(v[1], 4)*1000~", "~roundToPrecision(v[2], 4)*1000);
}
<br>

How do I call the function?

printVector(v);

MichaelPascoe · July 2022

printVector(yourVectorHere); should call your function. Perhaps I'm missing something.

If your function is stored in another studio, you will need to place "export" before the function. Then you can import that studio into your current studio to use it like you normally would.

billy2 · July 2022

FeatureScript 1803;
import(path : "onshape/std/geometry.fs", version : "1803.0");

annotation { "Feature Type Name" : "function" }
export const myFeature = defineFeature(function(context is Context, id is Id, definition is map)
    precondition
    {
        // Define the parameters of the feature type
    }
    {
        function printOut(m) {
            print(m);
            }
            
        printOut("hello world");
    });
<br>

It's seems simple but I can't find any reference to functions or subroutines, I have seen other code where guys are passing the context into functions outside the "function action area" and was wondering if there is something printed in the manuals about this simple concept.

chadstoltzfus · July 2022

Ah, that's because you want to create the function outside of the precondition and feature body blocks of code. You're looking for

FeatureScript 1803;

import(path : "onshape/std/geometry.fs", version : "1803.0");

annotation { "Feature Type Name" : "function" }
export const myFeature = defineFeature(function(context is Context, id is Id, definition is map)
    precondition
    {
        // Define the parameters of the feature type
    }
    {
        printOut("Hello world");
    });

function printOut(m) 
{
    print(m);
}

chadstoltzfus · July 2022

Another quick tip while my brain is thinking about this, sometimes you'll deal with vectors that have units, other times you'll have vectors without units. I would recommend checking the data type in the print function. Usually you would create an overloading function, but Vectors are the same data type whether the contents of the array are a number or a ValueWithUnits.

FeatureScript 1803;
import(path : "onshape/std/geometry.fs", version : "1803.0");

annotation { "Feature Type Name" : "My Feature" }
export const myFeature = defineFeature(function(context is Context, id is Id, definition is map)
    precondition
    {
        // Define the parameters of the feature type
    }
    {
        // Define the function's action
        var vectorWithUnits = vector(0, 0, 1) * inch;
        var vectorWithoutUnits = vector(0, 0, 1);

        printVector(vectorWithUnits);
        printVector(vectorWithoutUnits);
    });

export function printVector(v is Vector)
{
    if (isLengthVector(v))
    {
        println("vector :" ~ roundToPrecision(v[0] / inch, 4) * 1000 ~ ", " ~ roundToPrecision(v[1] / inch, 4) * 1000 ~ ", " ~ roundToPrecision(v[2] / inch, 4) * 1000);
    }
    else
    {
        println("vector :" ~ roundToPrecision(v[0], 4) * 1000 ~ ", " ~ roundToPrecision(v[1], 4) * 1000 ~ ", " ~ roundToPrecision(v[2], 4) * 1000);
    }
}

billy2 · July 2022

@chadstoltzfus perfect. That's what I was looking for. Thanks

can you create a subroutine?

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