dahlia/wand — pull request #192 by emcconville (2014-09-13 21:06:33+00:00)
Title: Drawing pu

## Overview

- Created PointInfo struct reference in API type casting.
- Assigned / mapped arguments for wand library methods.
- [DrawPolygon](http://www.imagemagick.org/api/drawing-wand.php#DrawPolygon)
- [DrawPolyline](http://www.imagemagick.org/api/drawing-wand.php#DrawPolyline)
- [DrawBezier](http://www.imagemagick.org/api/drawing-wand.php#DrawBezier)
- Completed initial unit test & documentation.

### Examples

**Drawing.polygon**

```python
with Image(filename="crosshatch.png") as img:
with Drawing() as draw:
draw.fill_color = Color("#fff")
draw.stroke_color = Color("#000")
draw.stroke_width = 2
points = [(5,5),(45,40),(45,10),(5,45)]
draw.polygon(points)
draw.draw(img)
img.save(filename="polygon.png")
```
![Drawing.polygon](http://emcconville.com/Polyline/polygon.png)

**Drawing.polyline**

```python
with Image(filename="crosshatch.png") as img:
with Drawing() as draw:
draw.fill_color = Color("transparent")
draw.stroke_color = Color("#000")
draw.stroke_width = 2
points = [(5,5),(45,40),(45,10),(5,45)]
draw.polyline(points)
draw.draw(img)
img.save(filename="polygon.png")
```
![Drawing.polyline](http://emcconville.com/Polyline/polyline.png)

**Drawing.bezier**

```python
with Image(filename="crosshatch.png") as img:
with Drawing() as draw:
draw.fill_color = Color("transparent")
draw.stroke_color = Color("#000")
draw.stroke_width = 2
points = [(5,5), (0,50), (50,0), (45,45)]
draw.bezier(points)
draw.draw(img)
img.save(filename="polygon.png")
```
![Drawing.bezier](http://emcconville.com/Polyline/bezier.png)