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unreal/Content/Materials/Materials_Spec.md
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unreal/Content/Materials/Materials_Spec.md
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# 材质规格完整参考
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## 目录
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1. [M_Globe 地球材质](#m_globe-地球材质)
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2. [M_DataPoint 数据点材质](#m_datapoint-数据点材质)
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3. [M_Supercomputer 超算材质](#m_supercomputer-超算材质)
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4. [M_Cable 光缆材质](#m_cable-光缆材质)
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5. [M_DataFlow 数据流材质](#m_dataplow-数据流材质)
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6. [M_Particle 粒子材质](#m_particle-粒子材质)
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---
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## M_Globe 地球材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | Surface |
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| 着色模型 | Default Lit |
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| 混合模式 | Opaque |
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| 路径 | `Content/Materials/M_Globe.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 | 使用位置 |
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|------|------|--------|------|----------|
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| `DayTexture` | Texture2D | Earth_Day | 白天纹理 | Base Color |
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| `NightTexture` | Texture2D | Earth_Night | 夜间纹理 | Emissive |
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| `CloudsTexture` | Texture2D | Earth_Clouds | 云层纹理 | Opacity |
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| `NormalMap` | Texture2D | Earth_Normal | 法线贴图 | Normal |
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| `SpecularMap` | Texture2D | Earth_Specular | 高光贴图 | Specular |
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| `EmissiveStrength` | Float | `1.0` | 自发光强度 | Emissive |
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| `CloudOpacity` | Float | `0.5` | 云层透明度 | Opacity |
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| `RotationSpeed` | Float | `0.1` | 旋转速度 | Time |
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| `NightThreshold` | Float | `0.3` | 夜间阈值 | LightSensor |
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### 节点网络
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```
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1. Time → Multiply → RotationSpeed → Rotator → DayTexture UV
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2. LightVector → DotProduct → NightThreshold → Step
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3. Step → Lerp → NightTexture → Emissive
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4. Time → Panner → CloudsTexture UV
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5. CloudsTexture → Opacity Mask
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```
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### 效果说明
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```
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白天效果:
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├─ 显示 DayTexture
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├─ 标准光照
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└─ 无自发光
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夜间效果:
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├─ 显示 NightTexture
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├─ 关闭直射光照
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└─ 启用自发光 (城市灯光)
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云层效果:
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├─ 半透明云层覆盖
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├─ 云层缓慢移动
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└─ 根据太阳位置变化
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```
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---
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## M_DataPoint 数据点材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | Surface |
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| 着色模型 | Unlit |
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| 混合模式 | Additive |
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| 路径 | `Content/Materials/M_DataPoint.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 |
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|------|------|--------|------|
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| `BaseColor` | Vector3 | (1.0, 0.2, 0.2) | 基础颜色 |
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| `EmissiveStrength` | Float | `10.0` | 自发光强度 |
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| `PulseSpeed` | Float | `1.0` | 脉冲速度 |
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| `PulseIntensity` | Float | `0.5` | 脉冲强度 |
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| `FresnelPower` | Float | `2.0` | 菲涅尔强度 |
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| `GlowRadius` | Float | `50.0` | 发光半径 |
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| `AlphaMask` | ScalarParameter | `1.0` | 透明度遮罩 |
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### 节点网络
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```
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1. ObjectPosition → WorldPosition
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2. CameraPosition → Subtract → Normalize → FresnelEffect
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3. FresnelEffect → Power → FresnelPower → Multiply → EmissiveStrength
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4. Time → Multiply → PulseSpeed → Sine → Add → 1.0
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5. Multiply → PulseIntensity → Multiply → EmissiveColor
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6. FresnelOutput × PulseOutput → FinalEmissive
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```
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### 菲涅尔效果
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```
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边缘发光:
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├─ 视角与表面法线夹角越大
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├─ 发光越强
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└─ 中心透明，边缘发光
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```
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---
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## M_Supercomputer 超算材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | Surface |
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| 着色模型 | Unlit |
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| 混合模式 | Additive |
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| 路径 | `Content/Materials/M_Supercomputer.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 |
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|------|------|--------|------|
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| `CoreColor` | Vector3 | (1.0, 0.1, 0.1) | 核心颜色 |
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| `RingColor` | Vector3 | (1.0, 0.3, 0.1) | 圆环颜色 |
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| `CoreEmissive` | Float | `15.0` | 核心发光 |
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| `RingEmissive` | Float | `5.0` | 圆环发光 |
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| `RingPulseSpeed` | Float | `1.0` | 圆环脉冲 |
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| `RingWidth` | Float | `0.02` | 圆环宽度 |
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| `PerformanceFactor` | Float | `1.0` | 性能因子 |
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### 节点网络
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```
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核心球体:
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1. FresnelEffect → Power(2.5) → Multiply → CoreEmissive
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2. CoreColor × CoreEmissive → CoreOutput
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扩散圆环:
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1. Time × RingPulseSpeed → Sine
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2. Sine + 0.5 → SineWidth
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3. RingWidth × SineWidth → RingWidthOutput
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4. RingColor × RingEmissive × RingWidthOutput → RingOutput
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最终输出:
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CoreOutput + RingOutput → EmissiveColor
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```
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### 性能颜色映射
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| 性能范围 | 核心颜色 | RGB |
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|----------|----------|-----|
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| > 1 EFLOPS | 暗红 | (0.8, 0, 0) |
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| 500T - 1E | 红色 | (1.0, 0.1, 0.1) |
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| 100T - 500T | 橙色 | (1.0, 0.4, 0.1) |
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| < 100T | 黄色 | (1.0, 0.7, 0.1) |
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---
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## M_Cable 光缆材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | Surface |
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| 着色模型 | Default Lit |
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| 混合模式 | Opaque |
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| 路径 | `Content/Materials/M_Cable.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 |
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|------|------|--------|------|
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| `BaseColor` | Vector3 | (1.0, 0.8, 0.0) | 金黄色 |
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| `Metallic` | Float | `0.8` | 金属度 |
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| `Roughness` | Float | `0.3` | 粗糙度 |
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| `EmissiveStrength` | Float | `2.0` | 自发光强度 |
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| `FlowDirection` | Float | `1.0` | 流向 (1=正向) |
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| `FlowSpeed` | Float | `1.0` | 流动速度 |
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| `BandwidthColor` | Vector3 | (0.2, 1.0, 0.2) | 带宽颜色 |
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### 节点网络
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```
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基础属性:
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1. BaseColor → BaseColor
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2. Metallic → Metallic
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3. Roughness → Roughness
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流动效果:
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1. Time × FlowSpeed → Panner UV
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2. NoiseTexture → Panner → FlowPattern
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3. FlowPattern × EmissiveStrength → FlowEmissive
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最终:
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BaseColor + FlowEmissive → EmissiveColor
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```
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---
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## M_DataFlow 数据流材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | Surface |
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| 着色模型 | Unlit |
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| 混合模式 | Additive |
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| 路径 | `Content/Materials/M_DataFlow.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 |
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|------|------|--------|------|
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| `FlowColor` | Vector4 | (0.2, 0.6, 1.0, 1.0) | 流动颜色 |
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| `LineWidth` | Float | `100.0` | 线宽度 |
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| `FlowSpeed` | Float | `1.0` | 流动速度 |
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| `FlowIntensity` | Float | `0.8` | 流动强度 |
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| `HeadLength` | Float | `0.2` | 头部长度 |
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| `TailFade` | Float | `0.5` | 尾部渐隐 |
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### 节点网络
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```
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1. TextureCoordinates → FlowUV
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2. Time × FlowSpeed → Panner → FlowOffset
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3. FlowUV + FlowOffset → FlowPattern
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4. FlowPattern × HeadLength → HeadMask
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5. 1 - FlowPattern × TailFade → TailMask
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6. FlowColor × HeadMask × TailMask × FlowIntensity → Emissive
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```
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---
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## M_Particle 粒子材质
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### 基础信息
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| 属性 | 值 |
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|------|-----|
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| 材质类型 | User Interface / Transparent |
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| 着色模型 | Unlit |
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| 混合模式 | Additive |
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| 路径 | `Content/Materials/M_Particle.uasset` |
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### 材质参数
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| 参数 | 类型 | 默认值 | 说明 |
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|------|------|--------|------|
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| `ParticleColor` | LinearColor | (1.0, 1.0, 1.0, 1.0) | 粒子颜色 |
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| `Softness` | Float | `0.5` | 柔和度 |
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| `GlowCenter` | Float | `0.5` | 发光中心 |
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| `GlowFalloff` | Float | `2.0` | 发光衰减 |
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### 节点网络
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```
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1. TextureCoordinates (UV)
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2. UV - 0.5 → CenterUV
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3. Length(CenterUV) → DistanceFromCenter
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4. DistanceFromCenter × 2 → NormalizedDistance
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5. 1 - NormalizedDistance × GlowFalloff → GlowStrength
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6. Softness × GlowStrength → SoftGlow
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7. ParticleColor × SoftGlow × ParticleOpacity → Emissive
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```
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---
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## 材质使用指南
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### 创建新材质
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```
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1. 右键 Content Browser → Material → Basic → M_Name
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2. 设置材质属性:
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├─ Material Domain: Surface
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├─ Blend Mode: Opaque/Additive/Transparent
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└─ Shading Model: Default Lit/Unlit
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3. 创建参数 (Material Parameter Collection)
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4. 保存并编译
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```
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### 材质实例
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```
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创建实例 (右击材质 → Create Material Instance):
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├─ 可在蓝图中动态修改参数
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├─ 支持材质覆盖
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└─ 便于批量管理
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```
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### 性能优化
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```
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材质优化技巧:
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├─ 减少 Texture Sample 数量
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├─ 使用 LOD
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├─ 禁用不必要的计算
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├─ 简化节点网络
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└─ 使用材质参数而非硬编码
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```
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