draw2d/draw2dpdf/README.md

draw2d pdf
==========

Package draw2dpdf provides a graphic context that can draw vector graphics and text on pdf file with the [gofpdf](https://github.com/jung-kurt/gofpdf) package.

Quick Start
-----------

The following Go code generates a simple drawing and saves it to a pdf document:
```go
// Initialize the graphic context on an RGBA image
dest := draw2dpdf.NewPdf("L", "mm", "A4")
gc := draw2dpdf.NewGraphicContext(dest)

// Set some properties
gc.SetFillColor(color.RGBA{0x44, 0xff, 0x44, 0xff})
gc.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff})
gc.SetLineWidth(5)

// Draw a closed shape
gc.MoveTo(10, 10) // should always be called first for a new path
gc.LineTo(100, 50)
gc.QuadCurveTo(100, 10, 10, 10)
gc.Close()
gc.FillStroke()

// Save to file
draw2dpdf.SaveToPdfFile("hello.pdf", dest)
```

There are more examples here: https://github.com/llgcode/draw2d/tree/master/samples

Alternative backends
--------------------

- Drawing on images is provided by the draw2d package.
- Drawing on opengl is provided by the draw2dgl package.

Acknowledgments
---------------

The pdf backend uses https://github.com/jung-kurt/gofpdf