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Fix: rotation.z is the actual pitch axis, not rotation.x

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The labels in the previous commit were swapped. With the wrapper
rotated -π/2 around Y so the nose points -X, the plane's longitudinal
axis is world X (so rotation.x is roll) and its lateral axis is
world Z (so rotation.z is pitch). Earlier code applied "roll"
(positive 0.18) to .z, which was actually pitching the nose down —
no amount of tweaking rotation.x could compensate, hence the user
seeing the plane go forward+down even after sign flips.

Now:
- rotation.z = -0.30 - p·0.05  (nose up ~17–20°, climb attitude)
- rotation.x = 0.12 + small variation  (subtle roll)
- rotation.y = 0  (no yaw, plane already heading the right way)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
MVA Global Fret 2026-05-05 12:31:51 +02:00
parent 710551082c
commit 7cebdf86ed
1 changed files with 10 additions and 6 deletions
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16
js/intro-scene.js
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@ -136,12 +136,16 @@ function tick() {
planeHolder.position.set(px, py + bob, 0); planeHolder.position.set(px, py + bob, 0);
/* Banking — léger roulis + nez relevé (cabré réaliste) */ /* Pour un avion volant -X (nose à gauche), avec up = +Y :
const targetRoll = 0.18 + (p - 0.5) * 0.25; // .z = roulis - rotation.z (axe latéral du monde) = PITCH. Négatif → nez en l'air.
const targetPitch = -0.18 - p * 0.04; // .x = nez en l'air ~10° - rotation.x (axe longitudinal du monde) = ROLL.
const targetYaw = -(p - 0.5) * 0.10; // .y = soupçon de yaw - rotation.y (axe vertical du monde) = YAW.
planeHolder.rotation.z += (targetRoll - planeHolder.rotation.z) * 0.08; */
planeHolder.rotation.x += (targetPitch - planeHolder.rotation.x) * 0.08; const targetPitch = -0.30 - p * 0.05; // ~17°-20° nez en l'air (montée)
const targetRoll = 0.12 + (p - 0.5) * 0.10; // léger roulis
const targetYaw = 0;
planeHolder.rotation.z += (targetPitch - planeHolder.rotation.z) * 0.08;
planeHolder.rotation.x += (targetRoll - planeHolder.rotation.x) * 0.08;
planeHolder.rotation.y += (targetYaw - planeHolder.rotation.y) * 0.08; planeHolder.rotation.y += (targetYaw - planeHolder.rotation.y) * 0.08;
renderer.render(scene, camera); renderer.render(scene, camera);