vite-threejs Debug Panel (Tweakpane)

Overview

Creates real-time parameter adjustment panels using Tweakpane. Activated via #debug URL hash.

Core principles:

• •Every tunable parameter gets a control
• •Colors must use view: 'color'
• •Group panels hierarchically (max 3 levels)

Quick Start

constructor() {
  this.experience = new Experience()
  this.debug = this.experience.debug
  
  this.params = { intensity: 1.0, color: '#ffffff' }
  
  if (this.debug.active) {
    this.debugInit()
  }
}

debugInit() {
  this.debugFolder = this.debug.ui.addFolder({
    title: 'Component Name',
    expanded: false,
  })
  
  this.debugFolder.addBinding(this.params, 'intensity', {
    min: 0, max: 10, step: 0.1,
  })
}

When to Use

• •Creating new 3D components
• •Adding ShaderMaterial uniform controls
• •Monitoring runtime state
• •Adding action buttons

Control Types

Detailed examples: See references/controls.md

ShaderMaterial Integration

All ShaderMaterial uniforms must have debug controls:

folder.addBinding(this.params, 'color', { view: 'color' })
  .on('change', (ev) => {
    this.material.uniforms.uColor.value.set(ev.value)
  })

Full patterns: See references/shader-debug.md

Common Mistakes

• •❌ Colors without view: 'color'
• •❌ Direct this.debug.ui extraction
• •❌ Calling debugInit() without checking debug.active
• •❌ Nesting deeper than 3 levels
• •❌ All panels expanded by default

Complete error catalog: See references/common-mistakes.md

Quick Reference

Advanced patterns: See references/advanced-patterns.md