I don't want to post the entire BB "geomatic" geometry library, as it is 1) a lot of code and 2) intellectual property I wish to exploit some day.

However, if you're just curious to see how I go about the specifics of a prop like this, here it is:

 

def ICLeakTester(morph = None):
        morphs = [
                ('Thickness', 0),
                ('Width', 0),
                ('Depth', 0),
                ('Height', 0),
                ('Extra Floor', 1),
                ('Explode', 1),
        ]
        if morph == '?':
                return morphs
        
        th = .0001 * inch
        w = 8 * feet
        h = 8 * feet
        d = 8 * feet
        if morph == 'Width':
                w = 9 * feet
        if morph == 'Height':
                h = 9 * feet
        if morph == 'Depth':
                d = 9 * feet
        if morph == 'Thickness':
                th = 2 * inch
        xpl = 1 * inch if morph == 'Explode' else 0
        mpl = PolyList()
        def slab(w, h, th):
                pl = PolyList()
                qb = QuadBuilder(0, w, 0, h, 0)
                pl << qb.quad().flip() << qb.extrude(0, 0, th) << qb.quad()
                return pl
        back = slab(w, h, th) << Trans(0, xpl, -xpl)
        left = slab(d, h, th) << YRot(90) << Trans(-xpl, xpl, d)
        right = left >> Trans(w - th + 2 * xpl, 0, 0)
        top = slab(w, d, th) << XRot(90)  << Trans(0, h + 2 * xpl, 0)
        xf = 1 * feet if morph == 'Extra Floor' else 0
        bottom = slab(w + 2 * xf, d + 2 * xf, th) << Trans(-xf, -xf, 0) << XRot(90)
        mpl << back << left << right << bottom << top
        mpl << Trans(-w/2, 0, -d/2)
        return mpl
                
prop = Morphing(ICLeakTester, "ICLeakTester")

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)