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https://github.com/smittix/intercept.git
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Add canvas-based visual synthesizer to DMR dashboard
Event-driven spring-physics bar visualization reacting to SSE events (sync/call/voice) with HSL color coding and center-outward ripple effects. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Smittix
@@ -11,6 +11,22 @@ let dmrSyncCount = 0;
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let dmrCallHistory = [];
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let dmrCurrentProtocol = '--';
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// ============== SYNTHESIZER STATE ==============
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let dmrSynthCanvas = null;
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let dmrSynthCtx = null;
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let dmrSynthBars = [];
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let dmrSynthAnimationId = null;
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let dmrSynthInitialized = false;
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let dmrActivityLevel = 0;
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let dmrActivityTarget = 0;
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let dmrEventType = 'idle';
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let dmrLastEventTime = 0;
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const DMR_BAR_COUNT = 48;
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const DMR_DECAY_RATE = 0.015;
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const DMR_BURST_SYNC = 0.6;
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const DMR_BURST_CALL = 0.85;
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const DMR_BURST_VOICE = 0.95;
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// ============== TOOLS CHECK ==============
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function checkDmrTools() {
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@@ -57,6 +73,11 @@ function startDmr() {
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dmrCallHistory = [];
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updateDmrUI();
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connectDmrSSE();
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dmrEventType = 'idle';
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dmrActivityTarget = 0.1;
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dmrLastEventTime = Date.now();
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if (!dmrSynthInitialized) initDmrSynthesizer();
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updateDmrSynthStatus();
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const statusEl = document.getElementById('dmrStatus');
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if (statusEl) statusEl.textContent = 'DECODING';
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if (typeof showNotification === 'function') {
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@@ -78,8 +99,11 @@ function stopDmr() {
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isDmrRunning = false;
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if (dmrEventSource) { dmrEventSource.close(); dmrEventSource = null; }
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updateDmrUI();
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dmrEventType = 'stopped';
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dmrActivityTarget = 0;
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updateDmrSynthStatus();
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const statusEl = document.getElementById('dmrStatus');
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if (statusEl) statusEl.textContent = 'IDLE';
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if (statusEl) statusEl.textContent = 'STOPPED';
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})
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.catch(err => console.error('[DMR] Stop error:', err));
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}
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@@ -103,6 +127,8 @@ function connectDmrSSE() {
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}
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function handleDmrMessage(msg) {
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if (dmrSynthInitialized) dmrSynthPulse(msg.type);
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if (msg.type === 'sync') {
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dmrCurrentProtocol = msg.protocol || '--';
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const protocolEl = document.getElementById('dmrActiveProtocol');
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@@ -193,8 +219,233 @@ function renderDmrHistory() {
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`).join('');
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}
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// ============== SYNTHESIZER ==============
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function initDmrSynthesizer() {
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dmrSynthCanvas = document.getElementById('dmrSynthCanvas');
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if (!dmrSynthCanvas) return;
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const rect = dmrSynthCanvas.parentElement.getBoundingClientRect();
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dmrSynthCanvas.width = rect.width - 20;
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dmrSynthCanvas.height = 70;
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dmrSynthCtx = dmrSynthCanvas.getContext('2d');
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dmrSynthBars = [];
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for (let i = 0; i < DMR_BAR_COUNT; i++) {
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dmrSynthBars[i] = { height: 2, targetHeight: 2, velocity: 0 };
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}
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dmrActivityLevel = 0;
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dmrActivityTarget = 0;
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dmrEventType = isDmrRunning ? 'idle' : 'stopped';
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dmrSynthInitialized = true;
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updateDmrSynthStatus();
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if (dmrSynthAnimationId) cancelAnimationFrame(dmrSynthAnimationId);
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drawDmrSynthesizer();
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}
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function drawDmrSynthesizer() {
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if (!dmrSynthCtx || !dmrSynthCanvas) return;
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const width = dmrSynthCanvas.width;
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const height = dmrSynthCanvas.height;
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const barWidth = (width / DMR_BAR_COUNT) - 2;
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const now = Date.now();
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// Clear canvas
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dmrSynthCtx.fillStyle = 'rgba(0, 0, 0, 0.3)';
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dmrSynthCtx.fillRect(0, 0, width, height);
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// Decay activity toward target
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const timeSinceEvent = now - dmrLastEventTime;
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if (timeSinceEvent > 2000) {
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// No events for 2s — decay target toward idle
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dmrActivityTarget = Math.max(0, dmrActivityTarget - DMR_DECAY_RATE);
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if (dmrActivityTarget < 0.05 && dmrEventType !== 'stopped') {
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dmrEventType = 'idle';
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updateDmrSynthStatus();
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}
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}
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// Smooth approach to target
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dmrActivityLevel += (dmrActivityTarget - dmrActivityLevel) * 0.08;
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// Determine effective activity (idle breathing when stopped/idle)
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let effectiveActivity = dmrActivityLevel;
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if (dmrEventType === 'stopped') {
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effectiveActivity = 0;
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} else if (effectiveActivity < 0.05 && isDmrRunning) {
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// Gentle idle breathing
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effectiveActivity = 0.05 + Math.sin(now / 800) * 0.035;
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}
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// Ripple timing for sync events
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const syncRippleAge = (dmrEventType === 'sync' && timeSinceEvent < 500) ? 1 - (timeSinceEvent / 500) : 0;
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// Voice ripple overlay
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const voiceRipple = (dmrEventType === 'voice') ? Math.sin(now / 60) * 0.15 : 0;
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// Update bar targets and physics
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for (let i = 0; i < DMR_BAR_COUNT; i++) {
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const time = now / 200;
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const wave1 = Math.sin(time + i * 0.3) * 0.2;
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const wave2 = Math.sin(time * 1.7 + i * 0.5) * 0.15;
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const randomAmount = 0.05 + effectiveActivity * 0.25;
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const random = (Math.random() - 0.5) * randomAmount;
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// Bell curve — center bars taller
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const centerDist = Math.abs(i - DMR_BAR_COUNT / 2) / (DMR_BAR_COUNT / 2);
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const centerBoost = 1 - centerDist * 0.5;
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// Sync ripple: center-outward wave burst
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let rippleBoost = 0;
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if (syncRippleAge > 0) {
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const ripplePos = (1 - syncRippleAge) * DMR_BAR_COUNT / 2;
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const distFromRipple = Math.abs(i - DMR_BAR_COUNT / 2) - ripplePos;
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rippleBoost = Math.max(0, 1 - Math.abs(distFromRipple) / 4) * syncRippleAge * 0.4;
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}
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const baseHeight = 0.1 + effectiveActivity * 0.55;
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dmrSynthBars[i].targetHeight = Math.max(2,
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(baseHeight + wave1 + wave2 + random + rippleBoost + voiceRipple) *
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effectiveActivity * centerBoost * height
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);
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// Spring physics
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const springStrength = effectiveActivity > 0.3 ? 0.15 : 0.1;
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const diff = dmrSynthBars[i].targetHeight - dmrSynthBars[i].height;
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dmrSynthBars[i].velocity += diff * springStrength;
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dmrSynthBars[i].velocity *= 0.78;
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dmrSynthBars[i].height += dmrSynthBars[i].velocity;
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dmrSynthBars[i].height = Math.max(2, Math.min(height - 4, dmrSynthBars[i].height));
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}
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// Draw bars
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for (let i = 0; i < DMR_BAR_COUNT; i++) {
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const x = i * (barWidth + 2) + 1;
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const barHeight = dmrSynthBars[i].height;
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const y = (height - barHeight) / 2;
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// HSL color by event type
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let hue, saturation, lightness;
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if (dmrEventType === 'voice' && timeSinceEvent < 3000) {
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hue = 30; // Orange
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saturation = 85;
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lightness = 40 + (barHeight / height) * 25;
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} else if (dmrEventType === 'call' && timeSinceEvent < 3000) {
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hue = 120; // Green
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saturation = 80;
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lightness = 35 + (barHeight / height) * 30;
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} else if (dmrEventType === 'sync' && timeSinceEvent < 2000) {
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hue = 185; // Cyan
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saturation = 85;
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lightness = 38 + (barHeight / height) * 25;
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} else if (dmrEventType === 'stopped') {
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hue = 220;
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saturation = 20;
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lightness = 18 + (barHeight / height) * 8;
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} else {
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// Idle / decayed
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hue = 210;
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saturation = 40;
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lightness = 25 + (barHeight / height) * 15;
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}
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// Vertical gradient per bar
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const gradient = dmrSynthCtx.createLinearGradient(x, y, x, y + barHeight);
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gradient.addColorStop(0, `hsla(${hue}, ${saturation}%, ${lightness + 18}%, 0.85)`);
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gradient.addColorStop(0.5, `hsla(${hue}, ${saturation}%, ${lightness}%, 1)`);
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gradient.addColorStop(1, `hsla(${hue}, ${saturation}%, ${lightness + 18}%, 0.85)`);
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dmrSynthCtx.fillStyle = gradient;
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dmrSynthCtx.fillRect(x, y, barWidth, barHeight);
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// Glow on tall bars
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if (barHeight > height * 0.5 && effectiveActivity > 0.4) {
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dmrSynthCtx.shadowColor = `hsla(${hue}, ${saturation}%, 60%, 0.5)`;
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dmrSynthCtx.shadowBlur = 8;
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dmrSynthCtx.fillRect(x, y, barWidth, barHeight);
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dmrSynthCtx.shadowBlur = 0;
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}
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}
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// Center line
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dmrSynthCtx.strokeStyle = 'rgba(0, 212, 255, 0.15)';
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dmrSynthCtx.lineWidth = 1;
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dmrSynthCtx.beginPath();
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dmrSynthCtx.moveTo(0, height / 2);
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dmrSynthCtx.lineTo(width, height / 2);
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dmrSynthCtx.stroke();
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dmrSynthAnimationId = requestAnimationFrame(drawDmrSynthesizer);
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}
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function dmrSynthPulse(type) {
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dmrLastEventTime = Date.now();
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if (type === 'sync') {
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dmrActivityTarget = Math.max(dmrActivityTarget, DMR_BURST_SYNC);
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dmrEventType = 'sync';
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} else if (type === 'call') {
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dmrActivityTarget = DMR_BURST_CALL;
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dmrEventType = 'call';
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} else if (type === 'voice') {
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dmrActivityTarget = DMR_BURST_VOICE;
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dmrEventType = 'voice';
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} else if (type === 'slot' || type === 'nac') {
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dmrActivityTarget = Math.max(dmrActivityTarget, 0.5);
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}
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// keepalive and status don't change visuals
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updateDmrSynthStatus();
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}
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function updateDmrSynthStatus() {
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const el = document.getElementById('dmrSynthStatus');
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if (!el) return;
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const labels = {
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stopped: 'STOPPED',
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idle: 'IDLE',
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sync: 'SYNC',
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call: 'CALL',
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voice: 'VOICE'
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};
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const colors = {
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stopped: 'var(--text-muted)',
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idle: 'var(--text-muted)',
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sync: '#00e5ff',
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call: '#4caf50',
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voice: '#ff9800'
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};
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el.textContent = labels[dmrEventType] || 'IDLE';
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el.style.color = colors[dmrEventType] || 'var(--text-muted)';
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}
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function resizeDmrSynthesizer() {
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if (!dmrSynthCanvas) return;
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const rect = dmrSynthCanvas.parentElement.getBoundingClientRect();
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if (rect.width > 0) {
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dmrSynthCanvas.width = rect.width - 20;
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dmrSynthCanvas.height = 70;
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}
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}
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function stopDmrSynthesizer() {
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if (dmrSynthAnimationId) {
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cancelAnimationFrame(dmrSynthAnimationId);
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dmrSynthAnimationId = null;
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}
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}
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window.addEventListener('resize', resizeDmrSynthesizer);
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// ============== EXPORTS ==============
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window.startDmr = startDmr;
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window.stopDmr = stopDmr;
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window.checkDmrTools = checkDmrTools;
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window.initDmrSynthesizer = initDmrSynthesizer;
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