Roof Flashing, Version Mashing, & Quad Teeth-Gnashing

The next thing to add was roof flashing. It’s been on my to-do list for ages. (Not sure why I haven’t just been adding it as I go…) It’s not very glamorous work – no one looks at a render and goes, “Oooh, look at that beautiful roof flashing!” – but the model just doesn’t look quite right without it. Here’s what I’m talking about, as I started to add it:

There are ways of doing this kind of thing automatically, but I wanted it to look a little imperfect, so I used Blender’s “Snap to Face” functionality and drew it all in manually.

Here are the SS and POA models with all the flashing added:

(If you want to see the flashing itself, I’d recommend right-clicking to open the images in new tabs so you can view the full resolution.)

It feels like time to work on the COS version of the castle, doesn’t it? In almost every way, it’s just an intermediate step between SS and POA, so I figured it shouldn’t be too hard. Everything south of the ravine is identical to SS, although the real miniature did receive some touchups. It’s the north side that changes.

After mashing together the appropriate elements from the SS and POA castles, I proceeded to create the new training grounds, with their relatively flat lawns that existed only in this film:

I really like this version of the castle. Here’s the above render’s isolated mist pass, too, just because it looks cool:

But there’s one major element missing: the Whomping Willow! That’ll likely be the topic of my next post.

By the way, the original quad continues to vex. Deeply. I’ve really been enjoying the discussions in the comments about the cloister. It’s led me to a very divisive debate (in my own head) about whether its design owes more to Gloucester Cathedral or Lacock Abbey. I was pretty confident in the answer being Gloucester…but now I’m really profoundly split.

Reasons to think it’s Gloucester:

  • The whole courtyard is labeled “Gloucester” in the later films’ floor plans (after the removal of the cloister in question).
  • The quad building has Gloucester-style windows on south outer façade, and they almost had them at the same level on the west façade as well. All of these are around the same level as the cloister.
  • The paths and fountain aren’t an exact match to any location I’ve found, but they’re a lot closer to Gloucester than to Lacock.
  • The Lacock courtyard is never really seen in the films; the Gloucester courtyard is, if only very briefly.

Reasons to think it’s Lacock:

  • I thought all the films’ floor plans labeled the courtyard “Gloucester,” but I realized that what I’m reading on the early plans is just the word “cloisters.”
  • There’s a floor plan from the first film that shows the way some sets and real-world locations fit together in the filmmakers’ imaginations. It is substantially different from the layout of the miniature, but the Lacock Abbey courtyard and cloister are placed right next to the grand staircase.
  • From the overhead shot in COS, it looks like the cloister is rather tall, with a blank stretch of wall above the tracery. Lacock’s cloister has a similar design; Gloucester’s doesn’t.
  • Lacock is a closer match to the size of the quad.

Soooooo…yeah, I’m pretty split. For now, I’ve added the blank bit of wall and raised the cloister roof accordingly, but I haven’t changed the tracery to match Lacock. I’m waiting till I (hopefully) find some more reference material.

Anyway, be sure to “follow” so you can be notified when I post the Whomping Willow!

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Fixin’ Mistakes

I love that establishing shot as winter becomes spring in the first film. I didn’t attempt to exactly match the angle and lighting, but it’s pretty close. Fiddle with the slider to show what the POA castle (right) would have looked like from the same angle!

Anyway, my main purpose with today’s short post is to clean up some messes! I was alerted to an apparent error in the last post: the front walkway through the arch doesn’t seem to have connected to the walkway around the Chamber of Reception, after all. The truth is far stranger and less certain…but if I’m interpreting the bits of available reference material correctly, there was actually a staircase that led down below the Chamber of Reception, probably entering through a gap in the rocky hillside that supports the CoR. This is my best attempt at reconstructing it:

I was then alerted to another error – there were windows on the hospital wing where there shouldn’t have been. And I discovered an extra chimney in the SS version of the quad, too. So here’s a new SS/POA comparison slider that fixes these issues:

Moral of the story for me: Always double-check all your reference images!

Moral of the story for you: If you think you see a mistake in my work, please do let me know in the comments! I want to get this right and I appreciate the help!

The…Gulp…Original Quad

The quad is tough.

There’s just no getting around it. Also known as the paved courtyard or Gloucester courtyard, this squarish space is nestled within one of the castle’s main buildings, between the marble staircase tower and Gryffindor Tower. It survived through all the films, but not without significant changes.

The later iterations are simpler and better documented. They even provide some valuable clues about the earlier designs. But there are outstanding questions about those earlier designs, for which reference is very scarce.

Based on the overhead shot from Chamber of Secrets, the original quad was ringed by cloisters and sat deeper within the building. One interesting result is that the big arch near the grand staircase tower couldn’t have led into the quad as it did in later versions. Best guess based on the available information is that this path ended some sort of balustrade, allowing students to look down into the quad, some 60 feet below.

You can get some sense of it as I start to rough out the geometry inside the original quad. Notice how high up that arch is, relative to the floor:

It’s a little easier to see if we take a look at the front of the castle (and get the viaduct out of the way):

See that shaded wall below the archway? Yeah…the quad floor is all the way down at the bottom of that wall. Crazy low, right? That depth is taken from photogrammetry of the COS overhead shot, by the way. It almost perfectly matches the elevation of the terrace in the back of the building.

Anyway, the regular spacing of the Gloucester Cathedral-inspired windows within the quad forced me to adjust the roofs a bit. The results should be more accurate now than they were before. Here’s an untextured work-in-progress view as I attempted to work out all the spacings and block in the cloisters below:

The balustrade in the foreground is conjectural. The closest thing I have to evidence of its existence is an aerial illustration of the castle by Michael Bramman for The Sunday Times Magazine. It was done before production on the second film, based on a mixture of blueprints, production stills, limited access to the miniature itself, and “a cardboard model which had enough of the of the basic elements to give [him] an idea of the school in its entirety” (source). This is how he painted the archway:

Certainly some sort of lip there – either a balustrade or a parapet. Impossible to tell. For my model, I’m using the design of the other balustrade nearby, between the Great Hall and the marble staircase tower.

Here’s a fully rendered view, similar to the untextured one above, but with some progress on the windows. These happen to correspond to the corridor to the Fat Lady’s portrait in the first film:

I’ve actually already recreated this window design, way back in 2019, at the base of the quad’s south exterior facade:

But back then, I was working with a lot less reference material, so the results were less accurate. Here’s a somewhat comparable angle with those lower windows redone:

Granted, the differences aren’t that noticeable from this distance. But I still feel better, haha!

The details are easier to make out in this render of the similar windows (and others) inside the quad. Fun fact: this is what you’d see if your face was pressed up against the big window by the moving staircases. Maybe at some point I’ll go back into my model of that space and replace the more generic scenic backdrop outside the window with a more “correct” view like this:

Speaking of that window…I have no direct evidence that it was ever included in the exterior model, but I’m strongly inclined to believe it was/is there. I decided to simply import that window from my grand staircase interior model and adapt it for exterior viewing. I kept the imagined real-world scale from the interior model and based the placement of the window on the GoF-era Noble Collection sculpture of Hogwarts:

As a reminder, here’s what it looks like from the inside:

Of course, please don’t take any the exterior details here as gospel. I’m doing my best to reach reasonable conclusions, but when it comes to the quad, I can’t be anywhere near as sure as I am in a lot of other parts of the model.

Next up will be the actual floor of the quad, the fountain, and the cloisters. I’ll save that for the next post. In the meantime, I’ll leave you with a screenshot of something else I’ve been starting to work on. When this whole project is finally finished, I want to provide multiple modalities for you to explore the castle’s shifting architecture. One of those will be a gallery of renders with buttons that will change between different versions of the castle.

The basic functionality is starting to come together, using some test renders of the incomplete models. It’s been a while since I’ve done any HTML/CSS/JavaScript coding, so it’s fun dipping my toes back into that pool while Blender is rendering.

Transfiguration Classroom

In the early Potter films, scenes in Professor McGonagall’s Transfiguration classroom were shot on location in the chapter house at Durham Cathedral. As part of their efforts to make the original exterior miniature somewhat consistent with the location shoots, Stuart Craig and his team adapted the exterior of the chapter house as part of their design.

I say “adapted” because the details don’t really match. Still, it’s very clear that this structure just south of the middle courtyard (also adapted from Durham) was intended to be the exterior of the classroom.

Here’s the basic shape of the structure:

My “reference board” for this structure is one of my smallest. This is partly because it only existed for two films and partly because it’s not that big or complex a structure…but it’s also partly because reference is really, really scarce. Like…a couple of shots in Chamber of Secrets and a behind-the-scenes photo from Sorcerer’s Stone, plus the floor plan that sits beneath the model. Still, it’s enough to reconstruct what most of it looked like…

…except I have literally zero shots of the far side of the structure, the one facing the courtyard. I’d be in heaven if I could find a shot of the original miniature from an angle like this:

It would clear up my questions about the side of the Transfiguration classroom facing the courtyard, not to mention the original training grounds tower roof on the right. Again…maybe someday. In the meantime, I’m leaving the wall facing the courtyard blank.

Anyway, here’s the less mysterious side with all the nice details:

And, as promised last time, here’s a slider comparing the whole area in the first film (left) to the redesign in the third film (right), including the relocation of the suspension bridge:

Next up…dare I try to tackle the original quad?

Suspension Bridge & Gryffindor Girls’ Tower

When we last saw the Hogwarts suspension bridge in my project, it was an untextured but fairly complete bridge to nowhere. Then, a few posts later, I said that I’d hidden the bridge so I could do some reworking, and that it would return “eventually.” I didn’t really expect that “eventually” would mean two years and a pandemic later, but there ya go.

In the intervening time, I discovered some issues with my original recreation of the bridge, so I just rebuilt it from scratch. The suspension bridge moved in Prisoner of Azkaban; I decided to start with that version, as I did two years ago.

I found that the two ends of the bridge weren’t quite lining up, but that problem went away with some slight cheating.

One challenge is that our only truly close-up view of this bridge in the films is during the dragon chase in Goblet of Fire…but that shot features a different design, and I’ve chosen to ignore it.

Adding the details, and hiding the buildings to the north so we can get a better angle (and let some more light in):

I suppose it’s only fair to also include a reverse angle, this time hiding the south block (and rotating the sky/sun 180°):

But of course, as I said, this is not where the suspension bridge started out. Originally, it was closer to Gryffindor Tower and lower down – in fact, you can see the small building it originally led to on the far left side of the render above.

Back on the opposite (south) side of the ravine, the tower containing the Gryffindor girls’ dormitories originally stood directly above the other side of the bridge. (Not going to dig into the design choice to deprive the girls’ tower of a spire or any discernable windows…) That tower disappeared completely when the suspension bridge moved in Prisoner of Azkaban, although the Gryffindor common room set still hints at its existence.

Again, it’s easiest to see this with half of the castle missing. Drag the slider to compare Sorcerer’s Stone (left) to Azkaban (right):

I should say that I am NOT confident in the accuracy or completeness of the lower left area of the wall in the Sorcerer’s Stone version. The floor plan seems to indicate some sort of terrace or balcony; if it was actually built, I’d imagine it was similar to the one on the right side of the render, in appearance and height. Sadly, I simply cannot find any reference for this area of the original model, so for the time being, I’m just building the main wall itself. Someday, man…someday.

I’d like to show you a similar slider facing the opposite direction, but I think that’ll be more fun and more informative once I’ve built the Transfiguration classroom (AKA Durham Cathedral chapter house). That’s next up on my to-do list…stay tuned for more updates! In the meantime, I’ll leave you with a more familiar Sorcerer’s Stone angle of the suspension bridge area:

And hey, why not – just as a fun bonus, here’s an overhead shot, but with the SS and POA versions both visible and intersecting nonsensically. I’m including the mist pass too because it just looks frickin’ cool.

Wrapping Up the SS Training Grounds

For Sorcerer’s Stone only, the Quidditch training grounds were surrounded by curtain walls, retaining walls, and small towers that were slight adaptations of structures at Alnwick Castle. As we’ve seen in previous posts, a big chunk was redesigned in Chamber of Secrets, and then a big hill covered up the remainder of the original design starting in Prisoner of Azkaban. (The all-digital version in Deathly Hallows and Fantastic Beasts doesn’t have any walls back there at all.)

Because of all this, there’s not a huge amount of reference available for this area of the miniature. It’s certainly easy to find reference for the real thing at Alnwick, but what reference I do have makes it clear that the details don’t always match up. Just gotta do my very best!

I continued around to the far side, where the information is most limited. I’ll compensate for my less-than-complete confidence in certain details here by including the “mist pass” for this render, just for fun. This is a component of the render that’s used to add some atmospheric perspective. The further something is from the camera, the lighter it is, simulating greater amounts of haze between the viewer and the object. Looks kinda cool all by itself, eh?

There’s a low wall that divides the Alnwick Castle lawns in real life, and it shows up in the blueprints for the first Hogwarts miniature as well. The real thing even shows up in a single (edited) establishing shot of the location, at the beginning of the flying lesson. But I’ve never found a single photo of that spot in the miniature, which makes it tough to know exactly how much detail they put into it.

I’m cheating with all these lawns – they’re just textured surfaces with no actual blades of grass. To create those would require particle systems or geometry nodes or something, and I don’t think my computer could handle the amount of grass that’ll eventually be part of the model. Even filling just this area with actual blades of grass would be pushing my luck:

So I’m not really sure how I’m going to handle the landscape as a whole. The goal is to have it look…well, not like this render I created as a kid in Bryce 3D, circa 1999:

I can tell already that I won’t be able to rely solely on procedural materials. At the very least, I may need to hand-paint some changes in coloration near the footpaths and whatnot. Perhaps another day. In the meantime, we’ll close out for now with an extremely wide (and slightly distorted) angle reminiscent of the first shot of the training grounds in the first film.

…and the “Sorcerer’s Stone” Training Grounds Tower!

We’re gonna start today’s post with the good stuff: before-and-after sliders comparing the COS-through-OOTP training grounds tower I finished last time to the original training grounds tower! (I’ll show you the process of creating the latter afterward.)

For each slider below, the SS version of the tower is on the left and the COS-OOTP version is on the right. Notice how little the lower areas of the structure change, and how much the upper areas of the structure change!

Before I built this original version, I realized that I didn’t have the adjacent areas built in the SS model, which would make it look kinda funky. So I first took care of some housekeeping: duplicating stuff from the POA model to the SS model, creating new collections (folders) for different structures, etc.

The Defense Against the Dark Arts tower moved in Prisoner of Azkaban, so I created a copy of it and moved it to its original position. I also removed some asymmetry from the Durham wing that was introduced in Azkaban to make room for the Dark Tower:

God, I get so nostalgic for those candle snuffer roofs on the Durham wing from the first couple films.

Anyway, as you’ve seen with the sliders, the lower areas of the COS-OOTP training grounds tower are identical to the original design from SS; they just redesigned most of the upper areas. So I brought a copy of that training grounds tower into the SS model and started ripping off all the top parts that were different. Here’s a fun render partway through that messy process:

Ugly, innit? Well, if you want to make an omelette, you’ve got to crack some eggs.

There, now the metaphorical eggs are beginning to set! Nearly done:

The roof is tricky because in addition to the gable, there seem to be some flat areas, but I don’t have any good shots from above. This is another area where my ideal levels of accuracy and precision simply aren’t going to be possible, unless some kind soul manages to send me reference photos or technical drawings of this spot that hasn’t been part of the miniature for almost 20 years now.

This seems to be the best inference possible from the available information:

Its central courtyard is particularly mysterious. It corresponds to a space at Alnwick Castle that was used in a brief scene in the first film, but the shape is so different in the miniature that it’s impossible to know what sorts of architectural details were in there. In the video game, the courtyard is omitted altogether, continuing the flat roof over the entire thing; you can see it at 3:07:02 in this video. But that castle has numerous other inaccuracies, so I take it with a grain of salt.

One of the things that’s starting to stick out for me is the lack of flashing on all my roofs. It definitely hurts the realism. I’m going to need to fix that at some point.

Anyway, here’s one last shot of the finished tower! Next, I’ll probably finish up the SS-era curtain walls. See you next time!

Finishing the Training Grounds Tower (COS-OOTP)

Still not sure how I want to handle the statues on top of the Alnwick Castle structures, so I’m hopping back over to the training grounds tower.

Part of this little corner still needed to be filled in. It’s hard to find good reference for that spot on the miniature, and it does seem to be somewhat different from the real thing at Alnwick. I decided to just do my best (and add the footpath where Hagrid drags the Christmas tree through the snow):

There are a few torches that show up over here in some shots in Chamber of Secrets, but I’ve elected not to include those – their positions aren’t always clear or even consistent from shot to shot, and I’m not sure whether they were ever in the main miniature.

Around the other side of the structure, I’ve accepted the difficult truth that I may never find adequate reference for certain details. I’m using the real structures at Alnwick to fill in the gaps as best I can. Fortunately, some of those real-world details are visible in the background in Sorcerer’s Stone, so I feel justified in including them.

This shorter structure on the right corresponds to Alnwick Castle’s 19th-century chapel, and from what I can see, it seems to have been a pretty exact recreation in the miniature:

Incidentally, see that rectangular depression a ways to the left of the chapel, above the arched recessed windows? In real life, the heraldic symbols of the Percy family are there. In the Hogwarts miniature…I can’t tell. It’s too tall to just be a Hogwarts crest. So I’m just leaving that blank for now. If you’ve got closer images of the miniature here…please send them! I’m always on the hunt for new rare photos or blueprints of the miniature.

In the meantime…here’s the complete training grounds tower, as it existed from Chamber of Secrets through Order of the Phoenix!

Fun fact: In the last render above, we’re sitting on the clock tower courtyard roof. The foreground cylindrical tower on the far right is of course Gryffindor Tower.

You might notice that I’ve removed the Alnwick Castle barbican/gatehouse and adjacent walls. Or rather, I’ve moved them so they don’t exist in my Prisoner of Azkaban model anymore, since that area will be covered up by hills. Don’t worry – those structures still exist in my nascent Sorcerer’s Stone model, and they’ll become part of my Chamber of Secrets model too.

Continuing the Curtain Walls

Relatively short post today. We’ll start off with some orthographic views of the POA model, by request. This is the state of the model before the progress you’ll see later in this post.

I always enjoy these blueprint-style perspective-less views.

Anyway, onward to today’s update. Let’s start fleshing out the remaining walls surrounding the training grounds! I’m kinda doing the COS version, since most of this is covered by a new hillside from POA onward, but that’s okay.

I hadn’t touched this area since late March 2019…crazy to think that it’s now been over 2 years since I started this whole project!

There’s not a lot of reference for this area of the miniature, but I have found some shots. Between those and photos of the real thing at Alnwick Castle, I think my results are pretty accurate. Interestingly, that guerite (small lookout tower) closest to the camera seems to have been slightly redesigned partway through the construction of the model. I’ve gone with the final design that was glimpsed – if only barely – in the films.

The next structure along the walls is Alnwick Castle’s barbican and gatehouse. (This is the building from which Neville falls and breaks his wrist in the first film.) I had already done a bit of work on this structure as part of an early attempt at recreating Alnwick itself – here’s an old render from this post:

I built this to the same scale as the main Hogwarts model, so it was easy enough to drop that into place and add brick textures:

As we’ve seen with other areas, I’ve built the walls so they go quite a ways down. From this view inside the training grounds, the lowest parts will eventually be covered up by grassy lawns. But on the outside, the terrain is rocky and uneven, and in some areas it slopes downward to reveal the lower areas of the wall. It’s easiest to just make the walls really deep and then cover a lot of it up with the terrain later on.

Fortunately, there are some nice orthographic drawings of the barbican/gatehouse structure on a placard at the location. These provide some very helpful reference. As always, my goal is to capture at least one of these, in roughly descending order of importance:

  1. The onscreen appearance and imagined reality of the castle in the films (which is achieved through a mixture of location shoots, miniatures, CGI, etc.)
  2. The main 1:24 scale VFX miniature of the whole castle
  3. The corresponding real-life filming location

These do not always agree, and there are significant gaps in the reference for the first two, so finding the right compromises can be tricky. For instance, this shot in Sorcerer’s Stone shows Neville’s POV as he nearly impales himself on a statue:

I’m not sure about the background, but the foreground architecture is all CG, and it matches neither the real-life location nor the miniature…although the corresponding spots at the location and on the miniature are never shown onscreen. To make matters worse, in the live-action location shots that follow, the statue (which I believe was installed just for the film) has moved to a different corner of the structure. So there is no single coherent reality for me to replicate.

In this particular case, my approach will be to ignore this quick shot altogether and aim instead for the real location with the added statues and other set dressings. But I’ll save that for the next post.

Starting the Training Grounds Curtain Walls (POA Version)

Yikes…it’s been a long time since my last update! Sorry about that, folks. One of the many factors: the training grounds tower is tough! It’s hard to find enough reference images. So to give myself a break, I switched gears to focus on the castle walls.

The curtain walls and small towers surrounding the training grounds were originally derived from those at Alnwick Castle. A large swath was then redesigned in the second film, probably to add visual interest in the Whomping Willow scenes. The westernmost areas (near the first flying lesson) still stayed the same until the third film, when they were swallowed up by hilly terrain. In effect, only the COS redesign remained. That’s the state the miniature is still in now, although the CG version in Deathly Hallows and Fantastic Beasts omits the walls altogether.

I started at the western end of the COS revisions:

This illustrates some of the challenges in mapping the stone brick textures correctly to the model when the angles get funky. I’ve tried to create a material that just behaves correctly no matter what I build, but sometimes I need to get in there and manually fiddle with the mapping to get it right.

These structures all look strangely tall right now, but eventually the terrain will cover up most of the lower areas:

They’re also in pristine condition compared to their appearance in the films, since significant chunks of the above-ground areas have crumbled away. But it’s always easier to create the full “original” structure and then weather away the parts you don’t need.

Here’s the same view with some more adjustments, details, and additions, but still no weathering:

And now, swinging around the easternmost area, we link it all up with the areas that are directly taken from Alnwick Castle:

I’ve also fixed the mapping of the brick textures here:

Some of these areas don’t quite match between the blueprints, the photogrammetry of the miniature from the Studio Tour, and the real-life correlates at Alnwick. I’ve aimed for a happy medium that tends to favor the actual miniature.

Then and only then do we get to the weathering, by way of a Boolean modifier. If you don’t know what that is…well, imagine carefully shaping a floating glob of poisonous molten radioactive alien laser acid that will eat away any part of the wall it touches. Actually, you know what? I won’t make you imagine it – here are my Boolean acid globs:

And yes, the glowing lava look is a critical part of getting the Boolean modifier to work right. TOTALLY necessary. 100%. Anyway, move the above slider back and forth to wipe away the glowing poisonous molten radioactive alien laser acid lava and reveal the weathered stone beneath.

I’ve still got to built the western half of the curtain walls, the parts that weren’t changed from their Alnwick-like state. But I’ll save those for a future post so I can at least have something to share with you now!