Tuesday, November 25, 2025

CHASING THE PERPENDICULAR

 More tracery. This time on St Mary Fratton. Perpendicular style using the tudor arch. Once again there is no way this is going to be parametric. In the vertical direction maybe. Just stretch the lower part which is all parallel lines. But changing the width is going to be complicated. In any case the different sizes of window have different tracery patterns, so it’s going to be a separate family for each window type and the size will be fixed.  First off is a drafting view where I explore the geometry and how much I can simplify for current purposes.

 

 

Then I work up the actual family. Could be a short sweep like last time, but an extrusion would also work because the size is frozen.  I’ve simplified it further on translation to solid geometry. We can always come back and elaborate.  In real life it’s not just and extruded shape of course. The cross section of the mullions has a subtle tapering and curvature, but this is a massing model so let’s keep it indicative. Just convey the impression of gothic tracery.

I arrayed this window type for the full length of the clerestory, both sides.  Definitely an improvement, so let’s keep moving forward.

 


There is a window high up on the sides of the chancel. This can be adapted from the clerestory type. I haven’t quite got the proportions right, but let’s not get bogged down right now. We’re talking broad brush here.




Finally there is a wider window along the aisles.  This one bothers me a bit. Somehow it’s lost the delicacy of the original, but I can’t see a quick fix at the moment. So once again I will be moving on because it’s a big church and there are other window types to tackle including the huge window at the East end. I think I should also do something about the battlements

 


 

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