creating-wpf-brushes

# WPF Brush Patterns

Brush types for filling shapes and backgrounds in WPF.

## 1. Brush Hierarchy

```
Brush (abstract)
├── SolidColorBrush      ← Single color
├── GradientBrush
│   ├── LinearGradientBrush  ← Linear gradient
│   └── RadialGradientBrush  ← Radial gradient
├── TileBrush
│   ├── ImageBrush       ← Image fill
│   ├── DrawingBrush     ← Drawing fill
│   └── VisualBrush      ← Visual element fill
└── BitmapCacheBrush     ← Cached visual
```

---

## 2. SolidColorBrush

```xml
<!-- Inline color name -->
<Rectangle Fill="Blue"/>

<!-- Hex color -->
<Rectangle Fill="#FF2196F3"/>

<!-- With opacity -->
<Rectangle>
    <Rectangle.Fill>
        <SolidColorBrush Color="Blue" Opacity="0.5"/>
    </Rectangle.Fill>
</Rectangle>
```

```csharp
// Code creation
var brush = new SolidColorBrush(Colors.Blue);
brush.Opacity = 0.5;
brush.Freeze(); // Performance optimization
```

---

## 3. LinearGradientBrush

```xml
<!-- Horizontal gradient (default) -->
<Rectangle Width="200" Height="100">
    <Rectangle.Fill>
        <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
            <GradientStop Color="#2196F3" Offset="0"/>
            <GradientStop Color="#FF9800" Offset="1"/>
        </LinearGradientBrush>
    </Rectangle.Fill>
</Rectangle>

<!-- Diagonal gradient -->
<Rectangle.Fill>
    <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#2196F3" Offset="0"/>
        <GradientStop Color="#4CAF50" Offset="0.5"/>
        <GradientStop Color="#FF9800" Offset="1"/>
    </LinearGradientBrush>
</Rectangle.Fill>

<!-- Vertical gradient -->
<Rectangle.Fill>
    <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
        <GradientStop Color="White" Offset="0"/>
        <GradientStop Color="Black" Offset="1"/>
    </LinearGradientBrush>
</Rectangle.Fill>
```

**StartPoint/EndPoint**: Relative coordinates (0-1)

---

## 4. RadialGradientBrush

```xml
<!-- Basic radial -->
<Ellipse Width="200" Height="200">
    <Ellipse.Fill>
        <Radial