clockface: add main func

.gitignore

@@ -0,0 +1,2 @@
+clock.svg
+gobytest

main.go

@@ -1,14 +1,46 @@
 package main
 
 import (
-	"gobytest/countdown"
+	"fmt"
+	"gobytest/clockface"
+	"io"
 	"os"
 	"time"
 )
 
 func main() {
 	// greet.Greet(os.Stdout, "Elodie")
-	sleeper := countdown.NewConfigurableSleeper(1*time.Second, time.Sleep)
+	// sleeper := countdown.NewConfigurableSleeper(1*time.Second, time.Sleep)
 
-	countdown.Countdown(os.Stdout, sleeper)
+	// countdown
+	// countdown.Countdown(os.Stdout, sleeper)
+
+	// clockface
+	t := time.Now()
+
+	sh := clockface.SecondHand(t)
+	io.WriteString(os.Stdout, svgStart)
+	io.WriteString(os.Stdout, bezel)
+	io.WriteString(os.Stdout, secondHandTag(sh))
+	io.WriteString(os.Stdout, svgEnd)
 }
+
+func secondHandTag(p clockface.Point) string {
+	return fmt.Sprintf(
+		`<line x1="150" y1="150" x2="%f" y2="%f" style="fill:none;stroke:#f00;stroke-width:3px;"/>`,
+		p.X,
+		p.Y,
+	)
+}
+
+const svgStart = `<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!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">`
+
+const bezel = `<circle cx="150" cy="150" r="100" style="fill:#fff;stroke:#000;stroke-width:5px;"/>`
+
+const svgEnd = `</svg>`