From 509f79dbd2718cbb55d68d33dc18c2e63eb6eb25 Mon Sep 17 00:00:00 2001
From: Michael Fogleman <fogleman@gmail.com>
Date: Sun, 21 Feb 2016 17:29:11 -0500
Subject: [PATCH] update example

---
 examples/beziers.go | 37 ++++++++++++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 7 deletions(-)

diff --git a/examples/beziers.go b/examples/beziers.go
index 93b68b2..e4cfa8d 100644
--- a/examples/beziers.go
+++ b/examples/beziers.go
@@ -14,12 +14,31 @@ func point() (x, y float64) {
 	return random(), random()
 }
 
+func drawCurve(dc *gg.Context) {
+	dc.SetRGBA(0, 0, 0, 0.1)
+	dc.FillPreserve()
+	dc.SetRGB(0, 0, 0)
+	dc.SetLineWidth(12)
+	dc.Stroke()
+}
+
+func drawPoints(dc *gg.Context) {
+	dc.SetRGBA(1, 0, 0, 0.5)
+	dc.SetLineWidth(2)
+	dc.Stroke()
+}
+
 func randomQuadratic(dc *gg.Context) {
 	x0, y0 := point()
 	x1, y1 := point()
 	x2, y2 := point()
 	dc.MoveTo(x0, y0)
 	dc.QuadraticTo(x1, y1, x2, y2)
+	drawCurve(dc)
+	dc.MoveTo(x0, y0)
+	dc.LineTo(x1, y1)
+	dc.LineTo(x2, y2)
+	drawPoints(dc)
 }
 
 func randomCubic(dc *gg.Context) {
@@ -29,6 +48,12 @@ func randomCubic(dc *gg.Context) {
 	x3, y3 := point()
 	dc.MoveTo(x0, y0)
 	dc.CubicTo(x1, y1, x2, y2, x3, y3)
+	drawCurve(dc)
+	dc.MoveTo(x0, y0)
+	dc.LineTo(x1, y1)
+	dc.LineTo(x2, y2)
+	dc.LineTo(x3, y3)
+	drawPoints(dc)
 }
 
 func main() {
@@ -47,15 +72,13 @@ func main() {
 			dc.Push()
 			dc.Translate(x, y)
 			dc.Scale(S/2, S/2)
-			randomCubic(dc)
-			// randomQuadratic(dc)
+			if j%2 == 0 {
+				randomCubic(dc)
+			} else {
+				randomQuadratic(dc)
+			}
 			dc.Pop()
 		}
 	}
-	dc.SetRGBA(0, 0, 0, 0.1)
-	dc.FillPreserve()
-	dc.SetRGB(0, 0, 0)
-	dc.SetLineWidth(16)
-	dc.StrokePreserve()
 	dc.SavePNG("out.png")
 }