Add gofont.go example, close #45

examples/gofont.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"log"
+
+	"github.com/fogleman/gg"
+	"github.com/golang/freetype/truetype"
+	"golang.org/x/image/font/gofont/goregular"
+)
+
+func main() {
+	font, err := truetype.Parse(goregular.TTF)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	face := truetype.NewFace(font, &truetype.Options{Size: 48})
+
+	dc := gg.NewContext(1024, 1024)
+	dc.SetFontFace(face)
+	dc.SetRGB(1, 1, 1)
+	dc.Clear()
+	dc.SetRGB(0, 0, 0)
+	dc.DrawStringAnchored("Hello, world!", 512, 512, 0.5, 0.5)
+	dc.SavePNG("out.png")
+}