Extruding with an offset on all 4 side

RyanAvery

I want to extrude the 5 drawers selected here, but I want a 1/8th inch gap on top, left, bottom, and right 
So i dont want to extrude the squares I have selected, but rather the squares i have selected but each of them trimmed on all 4 sides by 1/8th inch. 
Is there an easy / fast way to do this? 

RyanAvery

What about for extruding a set amount on all 4 sides of a box, the full depth of it. 
I.e. a tool / FS that can do this to any cube that I select after I select the face of it (so it knows to extrude the 4 faces connected to that face) 

RyanAvery

Is this something I should look into to writing a FS for? Or is that too much time? Would it be best to just stretch the boxes bigger with a copy, then boolean subtract the first from the copy? 

Jake_Rosenfeld

@RyanAvery

If you want to try your hand at FeatureScript, this would be a pretty simple feature to write.  In moderate-pseudocode it breaks down to

export const trimmedExtrude = defineFeature(function(context, id, definition)
    precondition
    {
        annotation{...} // <- Filter should probably be EntityType.FACE && GeometryType.PLANE
        definition.profiles is Query;
       
        annotation{...}
        isLength(definition.depth, LENGTH_BOUNDS);

        annotation{...}
        isLength(definition.trim, LENGTH_BOUNDS);
    }
    {
        // Find the extrudeDirection
        const dir = evFaceTangentPlane(..., {"face" : qNthElement(definition.profiles, 0)}).normal;

        //  Extrude the profiles
        opExtrude(context, id + "extrude", {
                     "entities" : definition.profiles,
                     "direction" : dir,
                     "endDepth" : definition.depth,
                     ...
                });

        // Find the side faces
        const capEntities = qUnion([qCapEntity(id + "extrude", true, EntityType.FACE), qCapEntity(..., false, ...)]);
        const sideFaces = qSubtraction(qCreatedBy(id + "extrude", EntityType.FACE), capEntities);

        // Push the side faces in
        opOffsetFace(..., {
                    "moveFaces" : sideFaces,
                    "offsetDistance" : -definition.trim
                });
    }, {};