3b1b-manim/manim_docs/modules/scene.md

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2025-04-06 00:05:12 +05:30
# Scene Module README
## Overview
The scene module provides the framework for creating and managing animations in Manim. It handles the organization, timing, and rendering of animations and mobjects.
## Key Components
### 1. Base Scene Class (`scene.py`)
- **Purpose**: Base class for all scenes
- **Key Features**:
- Manages animation playback
- Handles mobject organization
- Controls scene timing
- **Methods**:
- `play`: Plays animations
- `wait`: Pauses scene
- `add`: Adds mobjects
- `remove`: Removes mobjects
- **Usage**:
```python
class CustomScene(Scene):
def construct(self):
# Scene implementation
pass
```
### 2. Interactive Scene (`interactive_scene.py`)
- **Purpose**: Handles user interaction
- **Key Features**:
- User input handling
- Real-time updates
- Interactive controls
- **Usage**:
```python
class InteractiveExample(InteractiveScene):
def construct(self):
# Interactive implementation
pass
```
### 3. Scene File Writer (`scene_file_writer.py`)
- **Purpose**: Handles scene output
- **Key Features**:
- Video file generation
- Frame rendering
- Progress tracking
- **Usage**:
```python
writer = SceneFileWriter(scene)
writer.begin()
# Scene rendering
writer.finish()
```
### 4. Scene Embed (`scene_embed.py`)
- **Purpose**: Embeds scenes in other contexts
- **Key Features**:
- Jupyter notebook support
- Web embedding
- Interactive previews
- **Usage**:
```python
embed = SceneEmbed(scene)
embed.display()
```
## Scene Features
### 1. Animation Management
- Sequence control
- Timing management
- Animation grouping
### 2. Mobject Management
- Organization
- Layering
- State tracking
### 3. Output Control
- Video generation
- Frame rendering
- Quality settings
## Interaction with Other Modules
1. **Mobject Module**:
- Scenes contain and manage mobjects
- Controls mobject updates
- Handles mobject rendering
2. **Animation Module**:
- Scenes play animations
- Manages animation timing
- Controls animation sequence
3. **Camera Module**:
- Scenes control camera
- Manages camera movements
- Handles rendering
## Best Practices
1. **Scene Organization**:
- Clear structure
- Logical flow
- Proper timing
2. **Animation Management**:
- Smooth transitions
- Appropriate timing
- Clear sequences
3. **Performance**:
- Efficient rendering
- Proper cleanup
- Resource management
## Example Usage
```python
class ExampleScene(Scene):
def construct(self):
# Create mobjects
circle = Circle()
square = Square()
text = Text("Example")
# Organize scene
self.add(circle)
self.wait()
# Animate
self.play(
Transform(circle, square),
Write(text)
)
self.wait()
# Clean up
self.play(
FadeOut(square),
FadeOut(text)
)
```