Gemini 3D建模与渲染指南

# Gemini 3D建模与渲染指南

## 3D图像生成原理

AI 3D图像生成通过深度学习模型理解文字描述，生成对应的三维结构图像。

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## 基础提示词结构

### 四要素公式

```
[主体] + [场景] + [风格] + [参数]
```

### 示例

**基础版**：
> "一个3D渲染的小房子"

**优化版**：
> "A cozy 3D rendered house with blue roof, white walls, surrounded by green trees, Pixar style, soft lighting, isometric view, high detail, 4K resolution"

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## 详细提示词模板

### 主体描述

> "[主要物体] + [材质] + [颜色] + [细节]"
> 
> 示例：a stylized low-poly tree with orange leaves, trunk texture visible, autumn atmosphere

### 场景构建

> "[in/at] + [地点/环境] + [时间] + [天气]"
> 
> 示例：in a peaceful mountain village, golden hour, misty atmosphere, volumetric lighting

### 风格指定

| 风格 | 关键词 |
|------|----------|
| 皮克斯/迪士尼 | Pixar style, Disney animation |
| 写实 | Photorealistic, hyperrealistic |
| 扁平化 | Flat design, vector illustration |
| 赛博朋克 | Cyberpunk, neon, dark atmosphere |
| 极简主义 | Minimalist, clean lines |

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## 光影控制

| 光影类型 | 关键词 |
|----------|--------|
| 柔光 | Soft lighting, diffused light |
| 硬光 | Hard light, sharp shadows |
| 体积光 | Volumetric lighting, god rays |
| 背光 | Backlight, rim light |
| 戏剧光 | Dramatic lighting, chiaroscuro |

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## 实战提示词

### 室内设计

> "3D rendered interior of a modern minimalist living room, 北欧风格, light oak flooring, white walls, floor-to-ceiling windows with mountain view, Scandinavian furniture, warm ambient lighting, soft shadows, clean composition, 4K, architectural visualization"

### 产品展示

> "A 3D product render of wireless earbuds, floating in space, soft gradient background, studio lighting, reflections visible, clean white background, commercial photography style, high detail, product shot"

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## 常见问题

| 问题 | 解决方案 |
|------|----------|
| 变形/扭曲 | 简化描述，使用更明确的词汇 |
| 风格不一致 | 明确指定风格关键词 |
| 缺少细节 | 添加具体材质和纹理描述 |
| 光影不自然 | 指定光照方向和类型 |