Initial commit: Complete project foundation with all documentation, scripts, and project structure
This commit is contained in:
Dubai Metaverse Team
290
docs/WATER_SYSTEM.md
Normal file
290
docs/WATER_SYSTEM.md
Normal file
@@ -0,0 +1,290 @@
|
||||
# Water System - Dubai Metaverse
|
||||
|
||||
## Overview
|
||||
|
||||
This document describes the Marina water system implementation for the Dubai Metaverse project.
|
||||
|
||||
## Marina Water Requirements
|
||||
|
||||
### Visual Requirements
|
||||
|
||||
- **Realistic Water**: Photorealistic water appearance
|
||||
- **Reflections**: Strong reflections of buildings and sky
|
||||
- **Caustics**: Light refraction (caustics) on surfaces
|
||||
- **Waves**: Animated wave surface
|
||||
- **Foam**: Foam at edges and around objects
|
||||
|
||||
### Technical Requirements
|
||||
|
||||
- **Performance**: Maintain 60-90 FPS
|
||||
- **Quality**: High visual quality
|
||||
- **Scale**: Large water area (Marina channel)
|
||||
|
||||
---
|
||||
|
||||
## Water Material
|
||||
|
||||
### M_Water_Marina
|
||||
|
||||
**Primary water material for Marina**
|
||||
|
||||
### Material Properties
|
||||
|
||||
#### Base Properties
|
||||
|
||||
- **Blend Mode**: Translucent
|
||||
- **Shading Model**: Default Lit
|
||||
- **Two-Sided**: Enabled
|
||||
|
||||
#### Reflection
|
||||
|
||||
- **Reflectivity**: High (0.8-0.95)
|
||||
- **Reflection Method**: Lumen Reflections
|
||||
- **Reflection Quality**: High
|
||||
|
||||
#### Surface Properties
|
||||
|
||||
- **Roughness**: Low (0.05-0.1) for smooth surface
|
||||
- **Metallic**: Low (0.0-0.1)
|
||||
- **Color**: Slight blue/green tint
|
||||
|
||||
#### Animation
|
||||
|
||||
- **Wave Animation**: Animated normal map
|
||||
- **Wave Speed**: Configurable
|
||||
- **Wave Intensity**: Configurable
|
||||
- **Wave Direction**: Configurable
|
||||
|
||||
### Texture Requirements
|
||||
|
||||
#### Base Color
|
||||
|
||||
- **Resolution**: 4K
|
||||
- **Content**: Water color, depth variation
|
||||
- **Tint**: Blue/green
|
||||
|
||||
#### Normal Map
|
||||
|
||||
- **Resolution**: 4K
|
||||
- **Content**: Wave patterns, surface detail
|
||||
- **Animation**: Animated for wave movement
|
||||
|
||||
#### Roughness
|
||||
|
||||
- **Resolution**: 4K
|
||||
- **Content**: Surface roughness (low for smooth water)
|
||||
|
||||
#### Additional Maps
|
||||
|
||||
- **Caustics**: Caustics texture (optional)
|
||||
- **Foam Mask**: Foam areas (optional)
|
||||
|
||||
---
|
||||
|
||||
## Water Shader Implementation
|
||||
|
||||
### Wave Animation
|
||||
|
||||
1. **Normal Map Animation**:
|
||||
- Use panner node to animate normal map
|
||||
- Combine multiple wave layers
|
||||
- Adjust speed and intensity
|
||||
|
||||
2. **Vertex Animation** (optional):
|
||||
- Animate vertex positions
|
||||
- Use world position offset
|
||||
- Adjust wave height
|
||||
|
||||
### Reflections
|
||||
|
||||
1. **Lumen Reflections**:
|
||||
- Enable Lumen Reflections
|
||||
- High reflection quality
|
||||
- Verify reflections are accurate
|
||||
|
||||
2. **Planar Reflections** (optional):
|
||||
- Use planar reflection actor
|
||||
- For specific reflection needs
|
||||
- Performance consideration
|
||||
|
||||
### Caustics
|
||||
|
||||
1. **Caustics Texture**:
|
||||
- Create or use caustics texture
|
||||
- Project onto surfaces below water
|
||||
- Animate for movement
|
||||
|
||||
2. **Implementation**:
|
||||
- Use material function
|
||||
- Project onto geometry
|
||||
- Adjust intensity
|
||||
|
||||
---
|
||||
|
||||
## Water System Blueprint
|
||||
|
||||
### BP_WaterSystem
|
||||
|
||||
**Purpose**: Control water system behavior**
|
||||
|
||||
### Components
|
||||
|
||||
1. **Water Mesh**:
|
||||
- Large plane or custom mesh
|
||||
- Covers Marina area
|
||||
- Assigned water material
|
||||
|
||||
2. **Water Controller**:
|
||||
- Controls wave animation
|
||||
- Controls water level
|
||||
- Controls water effects
|
||||
|
||||
3. **Foam System**:
|
||||
- Foam at edges
|
||||
- Foam around objects
|
||||
- Foam material
|
||||
|
||||
### Settings
|
||||
|
||||
- **Wave Speed**: Animation speed
|
||||
- **Wave Intensity**: Wave strength
|
||||
- **Water Level**: Water height
|
||||
- **Foam Intensity**: Foam amount
|
||||
|
||||
---
|
||||
|
||||
## Foam System
|
||||
|
||||
### M_Water_Foam
|
||||
|
||||
**Foam material for water edges**
|
||||
|
||||
### Properties
|
||||
|
||||
- **Blend Mode**: Translucent or Additive
|
||||
- **Color**: White/light blue
|
||||
- **Opacity**: Variable
|
||||
- **Emissive**: Slight emissive
|
||||
|
||||
### Implementation
|
||||
|
||||
1. **Foam Mask**:
|
||||
- Create foam mask texture
|
||||
- Or use distance-based mask
|
||||
- Define foam areas
|
||||
|
||||
2. **Foam Placement**:
|
||||
- Place at water edges
|
||||
- Place around objects
|
||||
- Use decals or separate mesh
|
||||
|
||||
---
|
||||
|
||||
## Performance Optimization
|
||||
|
||||
### Water Optimization
|
||||
|
||||
1. **Material Complexity**:
|
||||
- Optimize shader instructions
|
||||
- Use efficient nodes
|
||||
- Minimize texture sampling
|
||||
|
||||
2. **Mesh Optimization**:
|
||||
- Use efficient mesh
|
||||
- Optimize vertex count
|
||||
- Use LODs if needed
|
||||
|
||||
3. **Reflection Optimization**:
|
||||
- Optimize Lumen Reflections
|
||||
- Limit reflection distance
|
||||
- Use lower quality if needed
|
||||
|
||||
### Streaming
|
||||
|
||||
- **World Partition**: Use World Partition for large water areas
|
||||
- **Distance Culling**: Cull water outside view
|
||||
- **LODs**: Use LODs for distant water
|
||||
|
||||
---
|
||||
|
||||
## Integration
|
||||
|
||||
### With Lighting
|
||||
|
||||
- **Reflections**: Water reflects sky and buildings
|
||||
- **Caustics**: Caustics on surfaces below
|
||||
- **Time of Day**: Water appearance changes with time
|
||||
|
||||
### With Buildings
|
||||
|
||||
- **Reflections**: Buildings reflect in water
|
||||
- **Interaction**: Water interacts with building bases
|
||||
- **Foam**: Foam around building foundations
|
||||
|
||||
### With Vehicles
|
||||
|
||||
- **Wake Effects**: Vehicle wake (optional)
|
||||
- **Splashes**: Water splashes (optional)
|
||||
|
||||
---
|
||||
|
||||
## Testing
|
||||
|
||||
### Visual Testing
|
||||
|
||||
1. **Reflections**: Verify reflections are accurate
|
||||
2. **Waves**: Verify wave animation is smooth
|
||||
3. **Caustics**: Verify caustics are visible
|
||||
4. **Foam**: Verify foam placement is correct
|
||||
|
||||
### Performance Testing
|
||||
|
||||
1. **Frame Rate**: Test frame rate with water
|
||||
2. **Memory**: Test memory usage
|
||||
3. **Optimization**: Test optimization settings
|
||||
|
||||
---
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### Common Issues
|
||||
|
||||
**Issue**: Water not reflecting
|
||||
- **Solution**: Check Lumen Reflections enabled
|
||||
- **Solution**: Verify reflection quality settings
|
||||
|
||||
**Issue**: Waves not animating
|
||||
- **Solution**: Check material animation nodes
|
||||
- **Solution**: Verify time-based nodes
|
||||
|
||||
**Issue**: Performance issues
|
||||
- **Solution**: Optimize material complexity
|
||||
- **Solution**: Reduce reflection quality
|
||||
- **Solution**: Use LODs
|
||||
|
||||
**Issue**: Water too transparent/opaque
|
||||
- **Solution**: Adjust opacity settings
|
||||
- **Solution**: Adjust color and tint
|
||||
|
||||
---
|
||||
|
||||
## Reference
|
||||
|
||||
### Dubai Marina Water
|
||||
|
||||
- **Color**: Clear blue/green
|
||||
- **Reflections**: Strong reflections
|
||||
- **Waves**: Gentle waves
|
||||
- **Clarity**: Clear, visible depth
|
||||
|
||||
### Material References
|
||||
|
||||
- Study real water materials
|
||||
- Reference Dubai Marina photos
|
||||
- Match visual appearance
|
||||
|
||||
---
|
||||
|
||||
**Version**: 1.0
|
||||
**Last Updated**: [Current Date]
|
||||
|
||||
Reference in New Issue
Block a user