switching to generators

examples/pie_chart/main.go

@@ -0,0 +1,29 @@
+package main
+
+//go:generate go run main.go
+
+import (
+	"os"
+
+	"github.com/wcharczuk/go-chart"
+)
+
+func main() {
+	pie := chart.PieChart{
+		Width:  512,
+		Height: 512,
+		Values: []chart.Value{
+			{Value: 5, Label: "Blue"},
+			{Value: 5, Label: "Green"},
+			{Value: 4, Label: "Gray"},
+			{Value: 4, Label: "Orange"},
+			{Value: 3, Label: "Deep Blue"},
+			{Value: 3, Label: "??"},
+			{Value: 1, Label: "!!"},
+		},
+	}
+
+	f, _ := os.Create("output.png")
+	defer f.Close()
+	pie.Render(chart.PNG, f)
+}

examples/pie_chart/reg.svg

@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="512" height="512">
+<path  d="M 256 256
+L 507 256
+A 251 251 225.00 1 1 79 79
+L 256 256
+Z" style="stroke-width:5;stroke:rgba(255,255,255,1.0);fill:rgba(106,195,203,1.0)"/>
+<path  d="M 256 256
+L 79 79
+A 251 251 90.00 0 1 433 79
+L 256 256
+Z" style="stroke-width:5;stroke:rgba(255,255,255,1.0);fill:rgba(42,190,137,1.0)"/>
+<path  d="M 256 256
+L 433 79
+A 251 251 45.00 0 1 507 256
+L 256 256
+Z" style="stroke-width:5;stroke:rgba(255,255,255,1.0);fill:rgba(110,128,139,1.0)"/>
+</svg>