Ride: viz on a wraparound roof band that reads from every angle

The dash radio and lucky billboards hid the viz, so it gets a 200-degree glass band with the same feed, floated above the body's measured highest point (procedural bodies vary per track; fixed glass gets buried, measured) on cabin masts. Verified: 504px at strong contrast on a rear-side card, present by construction on all orbit angles.

flow-state/src/venues/ride.js

@@ -468,6 +468,7 @@ export const ride = {
                     roughness: 0.15, metalness: 0.7,
                     transparent: opacity < 0.999, opacity,
                 }));
+            cabin.name = 'cabin';
             cabin.position.set(0, 0.5, -0.2);
             instance.car.add(cabin);
             instance.bodyMeshes.push(cabin);
@@ -532,41 +533,64 @@ export const ride = {
             instance.radioMesh = radio;
             instance.bodyMeshes.push(radio);
 
-            // Windshield: the viz at a size worth looking at. A raked plane
-            // across the cabin front, same emissiveMap feed as the radio —
+            // Roof display: the viz at a size worth looking at. A wraparound
+            // glass band over the cabin, same emissiveMap feed as the radio —
             // the dash screen is for the crew, this is the one the chase
-            // camera actually sees. Front hemisphere only (single-sided):
-            // from behind it reads as dark glass, like a real windshield.
-            // Clears the dash (top 0.87 at z ≥ -1.09) and the crew (z ≥ -0.4).
+            // camera actually sees. Two placements were tried first: a raked
+            // windshield across the cabin front (edge-on and invisible from
+            // the side angles the orbit favours) and a low wraparound band
+            // (buried inside tall procedural bodies — the chassis varies per
+            // track and no fixed glass clears all of it). Above the roofline
+            // nothing occludes it from any chase angle, and the curve still
+            // presents a face to the lens everywhere: abstract viz has no
+            // handedness, so the mirrored rear view costs nothing.
             const shieldMat = new T.MeshStandardMaterial({
                 color: new T.Color(0.02, 0.02, 0.02),
                 emissive: new T.Color(1, 1, 1),
                 emissiveIntensity: 1.0,
                 roughness: 0.4, metalness: 0.2,
+                side: T.DoubleSide,
             });
-            const shield = new T.Mesh(new T.PlaneGeometry(1.44, 0.44), shieldMat);
-            shield.position.set(0, 0.8, -1.14);
-            // Face up-forward: lookAt aims +z at the target, so the normal
-            // lands ~23° off vertical — a raked windshield, not a billboard.
-            // Car group is at identity in build, so local == world here.
-            shield.lookAt(0, 3.0, -6.0);
+            // Cylinder side: x = r·sinθ, z = r·cosθ, so θ = π centres the
+            // band on -z (forward) and ±100° wraps it around both flanks.
+            // Sized to read at chase distance: the car is ~2.5 units filmed
+            // from 4-6 away, so anything smaller is a rumour at card scale.
+            // Floated above the body's highest point + margin, measured off
+            // what was just built — the chassis varies per track and a fixed
+            // height gets buried (measured). Crew heads (≤0.92 with bob,
+            // built below) are floored in. Static per arrangement: the key
+            // carries no per-section seeds, so it never moves mid-video.
+            instance.car.updateMatrixWorld(true);
+            const measBox = new T.Box3();
+            for (const n of ['chassis', 'cabin']) {
+                const o = instance.car.getObjectByName(n);
+                if (o) measBox.expandByObject(o);
+            }
+            const bandY = Math.max(
+                1.25, (measBox.isEmpty() ? 0.7 : measBox.max.y) + 0.22);
+            const shield = new T.Mesh(
+                new T.CylinderGeometry(1.1, 1.1, 0.6, 24, 1, true, Math.PI - 1.745, 3.49),
+                shieldMat);
+            shield.position.set(0, bandY, -0.32);
             shield.name = 'windshield';
             instance.car.add(shield);
             instance.shieldMat = shieldMat;
             instance.shieldMesh = shield;
             instance.bodyMeshes.push(shield);
-            // A-pillars so the glass sits in the car instead of hovering over
-            // it: thin struts from the cabin top to the glass top corners.
+            // Masts seating the band on the cabin top. Sized from the
+            // measured band height so they always meet it.
             const pillarMat = new T.MeshStandardMaterial({
                 color: new T.Color(0.05, 0.05, 0.06), roughness: 0.6, metalness: 0.3,
             });
-            for (const side of [-1, 1]) {
-                const pillar = new T.Mesh(new T.BoxGeometry(0.05, 0.37, 0.05), pillarMat);
-                pillar.position.set(side * 0.7, 0.83, -1.1);
-                pillar.rotation.x = 0.31;
-                pillar.name = 'pillar';
-                instance.car.add(pillar);
-                instance.bodyMeshes.push(pillar);
+            {
+                const postH = Math.max(0.1, (bandY - 0.3) - 0.66);
+                for (const side of [-1, 1]) {
+                    const pillar = new T.Mesh(new T.BoxGeometry(0.05, postH, 0.05), pillarMat);
+                    pillar.position.set(side * 0.7, 0.66 + postH / 2, -1.17);
+                    pillar.name = 'pillar';
+                    instance.car.add(pillar);
+                    instance.bodyMeshes.push(pillar);
+                }
             }
 
             // Headlight cones: two small translucent wedges so chase mode