Selecting Derived Sketch

papawo

can somebody explain me , how to achieved this. I have sample code that I can use but I want to know the basic.

kevin_o_toole_1

I think the best way to do this is to use a feature input, and a utility function that gets a query for the entities in a feature list. Here's an example:

annotation { "Feature Type Name" : "Select features" }
export const multipleFeatures = defineFeature(function(context is Context, id is Id, definition is map)
    precondition
    {
        annotation { "Name" : "Feature" }
        definition.features is FeatureList;
    }
    {
        const entities = qCreatedBy(definition.features);
        debug(context, entities);
    });

export function qCreatedBy(features is FeatureList) returns Query
{    
    var query = [];
    for (var feature in features)
        query = append(query, qCreatedBy(feature.key));
    return qUnion(query);
}

Example document:
https://cad.onshape.com/documents/de90c930e40cf8bcf4a5fb07/w/754c83eb6f9cb3ab6b29f73b/e/6437c056f266e6142585dc0b

papawo

can you explain the code? i want to hear it from the expert.
why do it needs to have export before function?
why is the debug shows resolves bodies?

kevin_o_toole_1

1. The export isn't necessary for this code, but it's there so the function could potentially be imported and reused somewhere else.
   
   
2. The debug statement is there to demonstrate that the value of "entities" is the thing you're asking for (if it's not, let me know, you might need a different solution!).
   
   When using this in your code, you should remove the debug() line of code, and use the variable "entities" wherever you would have previously used "definition.profile". If "entities" is not a good variable name for your feature, you can replace it with a better one. After renaming, the old definition.profile input can be entirely removed from the precondition.

papawo

i like the debug as i can see the value of entities. I know I can comment out this too but Im confused why is it showing bodies resolved? is it creating bodies?

kevin_o_toole_1

Take a look at the documentation for EntityType and BodyType.

In short: Bodies can be 3D, 2D, 1D, even 0D. Sketches create both 1D wire bodies (sketch edges) and 2D sheet bodies (sketch regions).