I started to look at the original group of church models (not by Blomfield) and saw several that needed another pass. These two are in the top left corner of the group, a conventional place to start for the Western mind. I added timber detail to both bell chambers and the one porch. Fascination how a light touch here and there can bring the character of a model to life. These are both ancient churches, that is to say several hundred years old, with features dating to various times within that lifespan.
Quite probably they both began as single cell structures with no bell chamber, porch or chancel extensions. Saxon or Norman in style. That was my assumption. On checking I find that St Peter, Linkenholt was rebuilt in Victorian times. But with some Norman features reused. St Mary Mapledurwell is a restoration rather than a rebuild, with features dating back to the 13th and 15th centuries.
Switch of focus. It’s time to revisit my Gothic arches. I happen to be using face-based families at present but the same principles can be applied to wall-hosted versions. Perhaps I could even nest the face-based families into wall-hosted templates? Might take a performance hit though.
Here is the basic pointed arch with a POINTYness parameter to… make it more or less pointy.
Next comes an intermediate shape. Pointed arch that doesn’t blend into the vertical jambs but meets them at a sharp angle. This is not very common, but as it happens is used in the church closes to my retirement flat. All Saints, by Temple More, a Victorian church that I haven’t yet started to model.
I added a “Drop” parameter here and used Pythagoras to derive the Radius of the curve. I decided to hide the Drop parameter from the end user to keep things simple. No doubt you can find flatter and pointy-er versions of this type if you look hard enough but for the LOD100 work I am engaged in at present, I think a fixed proportion is less trouble. Just vary the Height and Width and forget about POINTYness.
So that was an intermediate step towards the tudor arch, common in Perpendicular Gothic the late style in England before the advent of Renaissance styles from Italy. Here the geometry is much trickier with two radii and two centre points. Once again I have chosen to freeze the proportions of the arch to minimise the chances of the family breaking.
The hypothetical meeting point of the primary radius and the vertical jamb is derived from a 45 degree triangle keeping the formula simple. Then we need two offsets to locate the centre of the small radius. (H2 and R2) H2 is dependent on R2, so we only have to set R2 and in practice I will freeze this as a quarter of the width.
These are drafting views that I used to develop my strategy. The setting out and the formulae have been transferred to face-based window/recess families and flexed. They seem to work well enough but there will probably be further evolution when I apply them to real churches.








