music-video-gen/party-cathedral/src/core/animate.js
2025-11-21 20:38:37 +01:00

91 lines
3.0 KiB
JavaScript

import * as THREE from 'three';
import { state } from '../state.js';
import { updateScreenEffect } from '../scene/magic-mirror.js'
import sceneFeatureManager from '../scene/SceneFeatureManager.js';
function updateCamera() {
const globalTime = Date.now() * 0.0001;
const lookAtTime = Date.now() * 0.0002;
const camAmplitude = 1.0;
const lookAmplitude = 8.0;
// Base Camera Position in front of the TV
const baseX = 0;
const baseY = 1.6;
const baseZ = -10.0;
// Base LookAt target (Center of the screen)
const baseTargetX = 0;
const baseTargetY = 1.6;
const baseTargetZ = -30.0;
// Camera Position Offsets (Drift)
const camOffsetX = Math.sin(globalTime * 3.1) * camAmplitude;
const camOffsetY = Math.cos(globalTime * 2.5) * camAmplitude * 0.1;
const camOffsetZ = Math.cos(globalTime * 3.2) * camAmplitude;
state.camera.position.x = baseX + camOffsetX;
state.camera.position.y = baseY + camOffsetY;
state.camera.position.z = baseZ + camOffsetZ;
// LookAt Target Offsets (Subtle Gaze Shift)
const lookOffsetX = Math.sin(lookAtTime * 1.5) * lookAmplitude;
const lookOffsetZ = Math.cos(lookAtTime * 2.5) * lookAmplitude;
const lookOffsetY = Math.cos(lookAtTime * 1.2) * lookAmplitude * 0.5;
// Apply lookAt to the subtly shifted target
state.camera.lookAt(baseTargetX + lookOffsetX, baseTargetY + lookOffsetY, baseTargetZ + lookOffsetZ);
}
function updateScreenLight() {
if (state.isVideoLoaded && state.screenLight.intensity > 0) {
const pulseTarget = state.originalScreenIntensity + (Math.random() - 0.5) * state.screenIntensityPulse;
state.screenLight.intensity = THREE.MathUtils.lerp(state.screenLight.intensity, pulseTarget, 0.1);
const lightTime = Date.now() * 0.0001;
const radius = 0.01;
const centerX = 0;
const centerY = 1.5;
state.screenLight.position.x = centerX + Math.cos(lightTime) * radius;
state.screenLight.position.y = centerY + Math.sin(lightTime * 1.5) * radius * 0.5; // Slightly different freq for Y
}
}
function updateShaderTime() {
if (state.tvScreen && state.tvScreen.material.uniforms && state.tvScreen.material.uniforms.u_time) {
state.tvScreen.material.uniforms.u_time.value = state.clock.getElapsedTime();
}
}
function updateVideo() {
if (state.videoTexture) {
state.videoTexture.needsUpdate = true;
}
}
// --- Animation Loop ---
export function animate() {
requestAnimationFrame(animate);
const deltaTime = 1;
sceneFeatureManager.update(deltaTime);
state.effectsManager.update();
updateCamera();
updateScreenLight();
updateVideo();
updateShaderTime();
updateScreenEffect();
// RENDER!
state.renderer.render(state.scene, state.camera);
}
// --- Window Resize Handler ---
export function onWindowResize() {
state.camera.aspect = window.innerWidth / window.innerHeight;
state.camera.updateProjectionMatrix();
state.renderer.setSize(window.innerWidth, window.innerHeight);
}