spacetime controller
This commit is contained in:
David Allemang
497
controller.js
Normal file
497
controller.js
Normal file
@@ -0,0 +1,497 @@
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// controller.js
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const UI_CSS = `
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.spacetime-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; display: flex; flex-direction: column; justify-content: space-between; box-sizing: border-box; padding: 12px; z-index: 10; }
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.reset-wrapper { display: flex; justify-content: flex-end; width: 100%; }
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.reset-btn { pointer-events: auto; padding: 6px 12px; background: rgba(0,0,0,0.6); color: white; border: 1px solid rgba(255,255,255,0.3); cursor: pointer; display: none; font-family: sans-serif; border-radius: 4px; font-weight: bold; backdrop-filter: blur(4px); }
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.reset-btn:hover { background: rgba(0,0,0,0.8); }
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.visualizer-ui { pointer-events: auto; font-family: sans-serif; background: rgba(20,20,20,0.85); padding: 12px; border-radius: 8px; display: flex; flex-direction: column; gap: 12px; color: white; user-select: none; backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.1); box-shadow: 0 4px 12px rgba(0,0,0,0.5); }
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.scrubber-row { display: flex; gap: 12px; align-items: center; }
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.btn { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: white; padding: 4px 8px; border-radius: 4px; cursor: pointer; min-width: 4ch; text-align: center; font-weight: bold; transition: background 0.1s; }
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.btn:hover { background: rgba(255,255,255,0.2); }
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.track-container { flex-grow: 1; height: 24px; padding: 0 10px; cursor: pointer; display: flex; align-items: center; }
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.track-inner { position: relative; width: 100%; height: 100%; pointer-events: none; }
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.track-bg { position: absolute; left: -10px; right: -10px; top: 8px; height: 8px; background: rgba(255,255,255,0.2); border-radius: 4px; }
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.track-fill { position: absolute; left: -10px; top: 8px; height: 8px; background: #f00; width: 10px; border-radius: 4px; }
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.track-handle { position: absolute; width: 16px; height: 16px; background: #fff; border-radius: 50%; top: 12px; transform: translate(-50%, -50%); z-index: 3; box-shadow: 0 0 4px rgba(0,0,0,0.5); }
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.marker { position: absolute; top: 8px; height: 8px; transform: translateX(-50%); pointer-events: none; z-index: 1; }
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.marker-event { width: 2px; background: rgba(255,255,255,0.5); }
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.marker-label { width: 4px; background: gold; z-index: 2; }
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`;
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export class SpacetimeController {
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constructor(diorama, options = {}) {
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this.diorama = diorama;
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this.frame = diorama.frame;
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this.container = diorama.element;
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this.canvas = diorama.canvas;
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this.opts = {
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orbit: true,
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pan: true,
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zoom: true,
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timeline: true,
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subticks: true,
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autoplay: false,
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loop: false,
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speed: 0.5,
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...options
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};
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// Camera State
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this.isDragging = false;
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this.hasDragged = false;
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this.dragButton = 0;
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this.lastMouse = { x: 0, y: 0 };
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this.touchMode = '';
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this.lastPinchDist = 0;
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// Timeline State
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this.playMode = this.opts.autoplay ? 'realtime' : 'paused';
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this.isLooping = this.opts.loop;
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this.speed = this.opts.speed;
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this.lastFrameTime = performance.now();
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this.playbackAccumulator = 0;
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// Ensure container is absolute-positioning friendly
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if (getComputedStyle(this.container).position === 'static') {
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this.container.style.position = 'relative';
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}
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if (!document.getElementById('spacetime-ui-styles')) {
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const style = document.createElement('style');
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style.id = 'spacetime-ui-styles';
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style.textContent = UI_CSS;
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document.head.appendChild(style);
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}
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this.buildUI();
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this.attachEvents();
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if (this.opts.timeline || this.opts.autoplay) {
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this.frame.subscribe(() => this.syncUI());
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this._loop = this.loop.bind(this);
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requestAnimationFrame(this._loop);
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}
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}
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buildUI() {
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this.overlay = document.createElement('div');
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this.overlay.className = 'spacetime-overlay';
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// --- Top: Reset Button ---
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const topWrapper = document.createElement('div');
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topWrapper.className = 'reset-wrapper';
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this.resetBtn = document.createElement('button');
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this.resetBtn.className = 'reset-btn';
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this.resetBtn.textContent = 'Reset View';
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this.resetBtn.addEventListener('click', () => {
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this.diorama.loadState();
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this.resetBtn.style.display = 'none';
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});
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topWrapper.appendChild(this.resetBtn);
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this.overlay.appendChild(topWrapper);
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// --- Bottom: Timeline Controls ---
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if (this.opts.timeline) {
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this.uiContainer = document.createElement('div');
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this.uiContainer.className = 'visualizer-ui';
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if (this.opts.subticks) {
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this.subRow = document.createElement('div');
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this.subRow.className = 'scrubber-row';
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this.subRow.innerHTML = `
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<div class="btn" id="btn-play-sub" title="Animate Events">S></div>
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<div class="btn" id="btn-prev-sub" title="Previous Event"><</div>
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<div class="track-container" id="track-sub-container">
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<div class="track-inner" id="track-sub-inner">
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<div class="track-bg"></div>
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<div class="track-fill" id="fill-sub"></div>
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<div id="markers-sub"></div>
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<div class="track-handle" id="handle-sub"></div>
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</div>
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</div>
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<div class="btn" id="btn-next-sub" title="Next Event">></div>
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`;
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this.uiContainer.appendChild(this.subRow);
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}
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this.tickRow = document.createElement('div');
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this.tickRow.className = 'scrubber-row';
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this.tickRow.innerHTML = `
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<div class="btn" id="btn-play" title="Play Realtime">R></div>
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<div class="btn" id="btn-loop" title="Toggle Loop">Loop</div>
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<div class="btn" id="btn-prev" title="Previous Tick"><<</div>
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<div class="track-container" id="track-tick-container">
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<div class="track-inner" id="track-tick-inner">
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<div class="track-bg"></div>
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<div class="track-fill" id="fill-tick"></div>
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<div id="markers-tick"></div>
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<div class="track-handle" id="handle-tick"></div>
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</div>
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</div>
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<div class="btn" id="btn-next" title="Next Tick">>></div>
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`;
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this.uiContainer.appendChild(this.tickRow);
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this.overlay.appendChild(this.uiContainer);
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this.bindTimelineEvents();
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this.generateTickMarkers();
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this.syncUI();
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}
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// Drop the overlay on top of the canvas
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this.container.appendChild(this.overlay);
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}
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// --- SPATIAL CONTROL ---
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orbit(dx, dy) {
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if (!this.opts.orbit) return;
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this.diorama.theta -= dx * 0.4;
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this.diorama.phi += dy * 0.4;
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this.diorama.phi = Math.max(-90, Math.min(90, this.diorama.phi));
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}
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pan(dx, dy) {
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if (!this.opts.pan) return;
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const t = this.diorama.theta * Math.PI / 180;
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const p = this.diorama.phi * Math.PI / 180;
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const rightX = Math.cos(t), rightZ = -Math.sin(t);
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const upX = -Math.sin(p) * Math.sin(t), upY = Math.cos(p), upZ = -Math.sin(p) * Math.cos(t);
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const rect = this.canvas.getBoundingClientRect();
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const panSpeed = this.diorama.radius / rect.height;
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this.diorama.target[0] += (-rightX * dx + upX * dy) * panSpeed;
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this.diorama.target[1] += (upY * dy) * panSpeed;
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this.diorama.target[2] += (-rightZ * dx + upZ * dy) * panSpeed;
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}
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zoomRatio(ratio) {
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if (!this.opts.zoom) return;
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this.diorama.radius *= ratio;
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this.diorama.radius = Math.max(1, Math.min(50, this.diorama.radius));
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}
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zoomLinear(delta) {
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if (!this.opts.zoom) return;
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this.diorama.radius += delta * 0.05;
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this.diorama.radius = Math.max(1, Math.min(50, this.diorama.radius));
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}
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attachEvents() {
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this.canvas.addEventListener('contextmenu', e => e.preventDefault());
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const notifyCameraChange = () => {
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this.hasDragged = true;
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if (this.diorama.checkpoint) this.resetBtn.style.display = 'block';
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this.diorama.requestRender();
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};
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// All of these drag events are strictly bound to the canvas element.
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// Clicking the UI container will NEVER trigger these because they are siblings.
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this.canvas.addEventListener('mousedown', (e) => {
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this.isDragging = true;
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this.hasDragged = false;
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this.lastMouse = { x: e.clientX, y: e.clientY };
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this.dragButton = e.button;
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if (this.dragButton === 0) {
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if (e.ctrlKey || e.metaKey) this.dragButton = 2;
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else if (e.shiftKey) this.dragButton = 1;
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}
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if (this.dragButton === 1) this.canvas.style.cursor = 'move';
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else if (this.dragButton === 2) this.canvas.style.cursor = 'ns-resize';
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else this.canvas.style.cursor = 'grabbing';
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});
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window.addEventListener('mouseup', () => {
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if (this.isDragging) {
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this.isDragging = false;
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this.canvas.style.cursor = 'grab';
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}
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});
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window.addEventListener('mousemove', (e) => {
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if (!this.isDragging) return;
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const dx = e.clientX - this.lastMouse.x;
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const dy = e.clientY - this.lastMouse.y;
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if (Math.hypot(dx, dy) > 3) {
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this.lastMouse = { x: e.clientX, y: e.clientY };
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if (this.dragButton === 0) this.orbit(dx, dy);
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else if (this.dragButton === 1) this.pan(dx, dy);
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else if (this.dragButton === 2) this.zoomLinear(dy);
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notifyCameraChange();
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}
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});
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this.canvas.addEventListener('click', () => {
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// Because UI clicks hit the overlay and container (bypassing canvas entirely),
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// this will exclusively trigger if the user cleanly taps the 3D scene.
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if (!this.hasDragged && this.opts.timeline) {
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this.playMode = this.playMode === 'paused' ? 'realtime' : 'paused';
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this.syncUI();
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}
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});
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}
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// --- TEMPORAL CONTROL ---
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getMaxTime() {
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const evs = this.frame.world.events;
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return evs.length > 0 ? evs[evs.length - 1].time : 0;
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}
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generateTickMarkers() {
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const markerContainer = this.uiContainer.querySelector('#markers-tick');
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const maxTime = this.getMaxTime();
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if (maxTime <= 0) return;
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const labeledTimes = new Set();
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for (const idx of this.frame.world.labels.values()) {
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if (idx < this.frame.world.events.length) {
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labeledTimes.add(this.frame.world.events[idx].time);
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}
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}
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for (const t of labeledTimes) {
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if (t < 0) continue;
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const pct = (t / maxTime) * 100;
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const marker = document.createElement('div');
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marker.className = 'marker marker-label';
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marker.style.left = `${pct}%`;
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markerContainer.appendChild(marker);
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}
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}
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setupDraggableTrack(containerId, innerId, onDrag) {
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const wrapper = this.uiContainer.querySelector('#' + containerId);
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const inner = this.uiContainer.querySelector('#' + innerId);
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let isTrackDragging = false;
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const update = (e) => {
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const rect = inner.getBoundingClientRect();
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let pct = (e.clientX - rect.left) / rect.width;
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pct = Math.max(0, Math.min(1, pct));
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onDrag(pct);
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};
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wrapper.addEventListener('mousedown', (e) => {
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isTrackDragging = true;
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this.playMode = 'paused';
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update(e);
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});
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window.addEventListener('mousemove', (e) => {
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if (isTrackDragging) update(e);
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});
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window.addEventListener('mouseup', () => {
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isTrackDragging = false;
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});
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}
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bindTimelineEvents() {
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const getEl = id => this.uiContainer.querySelector('#' + id);
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getEl('btn-loop').onclick = () => {
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this.isLooping = !this.isLooping;
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this.syncUI();
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};
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getEl('btn-play').onclick = () => {
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if (this.playMode === 'realtime') this.playMode = 'paused';
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else {
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if (this.frame.currentTime >= this.getMaxTime() || this.frame.currentTime < 0) this.frame.seek(0);
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this.playMode = 'realtime';
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}
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this.syncUI();
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};
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getEl('btn-prev').onclick = () => {
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this.playMode = 'paused';
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let activeTime = -Infinity;
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for (const ev of this.frame.world.events) if (ev.time <= this.frame.currentTime) activeTime = ev.time;
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let prevTime = -1;
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for (let i = this.frame.world.events.length - 1; i >= 0; i--) {
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if (this.frame.world.events[i].time < activeTime) {
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prevTime = this.frame.world.events[i].time;
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break;
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}
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}
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if (prevTime < 0) prevTime = this.isLooping ? this.getMaxTime() : 0;
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this.frame.seek(prevTime);
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this.syncUI();
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};
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getEl('btn-next').onclick = () => {
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this.playMode = 'paused';
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let nextTime = this.getMaxTime() + 1;
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for (const ev of this.frame.world.events) {
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if (ev.time > this.frame.currentTime) { nextTime = ev.time; break; }
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}
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if (nextTime > this.getMaxTime()) nextTime = this.isLooping ? 0 : this.getMaxTime();
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this.frame.seek(nextTime);
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this.syncUI();
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};
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this.setupDraggableTrack('track-tick-container', 'track-tick-inner', (pct) => {
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this.frame.seek(Math.round(pct * this.getMaxTime()));
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this.syncUI();
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});
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if (this.opts.subticks) {
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getEl('btn-play-sub').onclick = () => {
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this.playMode = this.playMode === 'subtick' ? 'paused' : 'subtick';
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this.syncUI();
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};
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getEl('btn-prev-sub').onclick = () => {
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this.playMode = 'paused';
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let idx = this.frame.currentIndex - 1;
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if (idx < this.frame.world.initialIndex) idx = this.isLooping ? this.frame.world.events.length : this.frame.world.initialIndex;
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this.frame.seekIndex(idx);
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this.syncUI();
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};
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getEl('btn-next-sub').onclick = () => {
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this.playMode = 'paused';
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let idx = this.frame.currentIndex + 1;
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if (idx > this.frame.world.events.length) idx = this.isLooping ? this.frame.world.initialIndex : this.frame.world.events.length;
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this.frame.seekIndex(idx);
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this.syncUI();
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};
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this.setupDraggableTrack('track-sub-container', 'track-sub-inner', (pct) => {
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if (this.currentTickEventCount === 0) return;
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this.frame.seekIndex(this.currentTickStartIndex + Math.round(pct * this.currentTickEventCount));
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this.syncUI();
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});
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}
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}
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syncUI() {
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if (!this.opts.timeline) return;
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const getEl = id => this.uiContainer.querySelector('#' + id);
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getEl('btn-play').textContent = this.playMode === 'realtime' ? '||' : 'R>';
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getEl('btn-loop').style.background = this.isLooping ? 'rgba(102, 204, 102, 0.4)' : 'rgba(255, 255, 255, 0.1)';
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getEl('btn-loop').style.borderColor = this.isLooping ? '#6c6' : 'rgba(255, 255, 255, 0.2)';
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if (this.opts.subticks) {
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getEl('btn-play-sub').textContent = this.playMode === 'subtick' ? '||' : 'S>';
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this.subRow.style.display = this.playMode === 'realtime' ? 'none' : 'flex';
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}
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const maxTime = this.getMaxTime();
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const displayTime = Math.max(0, this.frame.currentTime);
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const tickPct = maxTime > 0 ? (displayTime / maxTime) * 100 : 0;
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getEl('fill-tick').style.width = `calc(${tickPct}% + 10px)`;
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getEl('handle-tick').style.left = `${tickPct}%`;
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if (!this.opts.subticks) return;
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const events = this.frame.world.events;
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let activeTickTime = -Infinity;
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for (const ev of events) {
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if (ev.time <= this.frame.currentTime) activeTickTime = ev.time;
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else break;
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}
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let startIdx = 0, count = 0;
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for (let i = 0; i < events.length; i++) {
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if (events[i].time === activeTickTime) {
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if (count === 0) startIdx = i;
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count++;
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}
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}
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this.currentTickStartIndex = startIdx;
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this.currentTickEventCount = count;
|
||||
|
||||
const markerContainer = getEl('markers-sub');
|
||||
markerContainer.innerHTML = '';
|
||||
|
||||
if (count > 0) {
|
||||
const labeledIndices = new Set(this.frame.world.labels.values());
|
||||
for (let i = 0; i <= count; i++) {
|
||||
const markerPct = (i / count) * 100;
|
||||
const marker = document.createElement('div');
|
||||
marker.className = 'marker';
|
||||
marker.style.left = `${markerPct}%`;
|
||||
if (labeledIndices.has(startIdx + i)) marker.classList.add('marker-label');
|
||||
else marker.classList.add('marker-event');
|
||||
markerContainer.appendChild(marker);
|
||||
}
|
||||
|
||||
let localCursor = Math.max(0, Math.min(count, this.frame.currentIndex - startIdx));
|
||||
const subPct = (localCursor / count) * 100;
|
||||
|
||||
getEl('fill-sub').style.width = `calc(${subPct}% + 10px)`;
|
||||
getEl('handle-sub').style.left = `${subPct}%`;
|
||||
getEl('handle-sub').style.display = 'block';
|
||||
} else {
|
||||
getEl('fill-sub').style.width = `0px`;
|
||||
getEl('handle-sub').style.display = 'none';
|
||||
}
|
||||
}
|
||||
|
||||
loop(time) {
|
||||
const dt = (time - this.lastFrameTime) / 1000;
|
||||
this.lastFrameTime = time;
|
||||
const maxTime = this.getMaxTime();
|
||||
|
||||
if (this.playMode === 'realtime') {
|
||||
let nextTime = this.frame.currentTime + dt * 20 * this.speed;
|
||||
if (nextTime >= maxTime) {
|
||||
if (this.isLooping) {
|
||||
this.frame.seek(nextTime % maxTime);
|
||||
} else {
|
||||
this.frame.seek(maxTime);
|
||||
this.playMode = 'paused';
|
||||
}
|
||||
} else {
|
||||
this.frame.seek(nextTime);
|
||||
}
|
||||
if (this.opts.timeline) this.syncUI();
|
||||
|
||||
} else if (this.playMode === 'subtick') {
|
||||
this.playbackAccumulator += dt * 4 * this.speed;
|
||||
if (this.playbackAccumulator >= 1.0) {
|
||||
const steps = Math.floor(this.playbackAccumulator);
|
||||
this.playbackAccumulator -= steps;
|
||||
const nextIdx = this.frame.currentIndex + steps;
|
||||
|
||||
if (nextIdx > this.frame.world.events.length) {
|
||||
if (this.isLooping) this.frame.seekIndex(this.frame.world.initialIndex);
|
||||
else {
|
||||
this.frame.seekIndex(this.frame.world.events.length);
|
||||
this.playMode = 'paused';
|
||||
}
|
||||
} else {
|
||||
this.frame.seekIndex(nextIdx);
|
||||
}
|
||||
}
|
||||
if (this.opts.timeline) this.syncUI();
|
||||
} else {
|
||||
this.playbackAccumulator = 0;
|
||||
}
|
||||
|
||||
requestAnimationFrame(this._loop);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user