updates

clockface.go

@@ -1 +1,34 @@
 package clockface
+
+import (
+	"git.nerdfortress.dev/mitch/clockface"
+	"math"
+)
+
+const secondHandLength = 90
+const clockCentreX = 150
+const clockCentreY = 150
+
+type Point struct {
+	X float64
+	Y float64
+}
+
+func SecondHand(t time.Time) Point {
+	p := secondHandPoint(t)
+	p = Point{p.X * secondHandLength, p.Y * secondHandLength} //scale
+	p = Point{p.X, -p.Y}                                      //flip
+	p = Point{p.X + clockCentreX, p.Y + clockCentreY}         //translate
+	return p
+}
+
+func secondsInRadians(t time.Time) float64 {
+	return math.Pi / (30 / (float64(t.Second())))
+}
+
+func secondHandPoint(t time.Time) Point {
+	angle := secondsInRadians(t)
+	x := math.Sin(angle)
+	y := math.Cos(angle)
+	return Point{x, y}
+}

clockface/main.go

@@ -1,42 +1,35 @@
-package clockface
+package main
 
 import (
+	"fmt"
+	"git.nerdfortress.dev/mitch/clockface"
+	"io"
 	"math"
+	"os"
 	"time"
 )
 
-package clockface
+func main() {
-
+	t := time.Now()
-import (
+	sh := clockface.SecondHand(t)
-"git.nerdfortress.dev/mitch/gotdd/clockface"
+	io.WriteString(os.Stdout, svgStart)
-"math"
+	io.WriteString(os.Stdout, bezel)
-"time"
+	io.WriteString(os.Stdout, secondHandTag(sh))
-)
+	io.WriteString(os.Stdout, svgEnd)
-
-const secondHandLength = 90
-const clockCentreX = 150
-const clockCentreY = 150
-
-type Point struct {
-	X float64
-	Y float64
 }
 
-func SecondHand(t time.Time) Point {
+func secondHandTag(p clockface.Point) string {
-	p := secondHandPoint(t)
+	return fmt.Sprintf(`<line x1="150" y1="150" x2="%f" y2="%f" style="fill:none;stroke:#f00;stroke-width:3px;"/>`, p.X, p.Y)
-	p = Point{p.X * secondHandLength, p.Y * secondHandLength} //scale
-	p = Point{p.X, -p.Y}                                      //flip
-	p = Point{p.X + clockCentreX, p.Y + clockCentreY}         //translate
-	return p
 }
 
-func secondsInRadians(t time.Time) float64 {
+const svgStart = `<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-	return math.Pi / (30 / (float64(t.Second())))
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-}
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="100%"
+     height="100%"
+     viewBox="0 0 300 300"
+     version="2.0">`
 
-func secondHandPoint(t time.Time) Point {
+const bezel = `<circle cx="150" cy="150" r="100" style="fill:#fff;stroke:#000;stroke-width:5px;"/>`
-	angle := secondsInRadians(t)
+
-	x := math.Sin(angle)
+const svgEnd = `</svg>`
-	y := math.Cos(angle)
-	return Point{x, y}
-}

clockface_acceptance_test.go

@@ -10,6 +10,7 @@ package clockface
 import (
 "testing"
 "time"
+"git.nerdfortress.dev/mitch/clockface"
 )
 
 func TestSecondHandAtMidnight(t *testing.T) {

clockface_test.go

@@ -12,6 +12,7 @@ import (
 "math"
 "testing"
 "time"
+"git.nerdfortress.dev/mitch/clockface"
 )
 
 func simpleTime(hours, minutes, seconds int) time.Time {