Added color table for tilemapper.

tilemapper/colors.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"image/color"
+	"os"
+	"strings"
+)
+
+func ParseColors(filename string) (colors map[string]color.RGBA, err error) {
+
+	var file *os.File
+	if file, err = os.Open(filename); err != nil {
+		return
+	}
+	defer file.Close()
+
+	colors = make(map[string]color.RGBA)
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "#") {
+			continue
+		}
+		c := color.RGBA{A: 0xff}
+		var name string
+        if n, _ :=  fmt.Sscanf(
+            line, "%s %d %d %d %d", &name, &c.R, &c.G, &c.B, &c.A); n > 0 {
+            colors[name] = c
+        }
+	}
+	err = scanner.Err()
+	return
+}

tilemapper/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
+	"image/color"
 	"log"
 
 	"bitbucket.org/s_l_teichmann/mtredisalize/common"
@@ -14,6 +15,7 @@ func main() {
 		host                 string
 		x, y, z              int
 		width, height, depth int
+		colorsfile           string
 	)
 
 	flag.IntVar(&port, "port", 6379, "port to of mtredisalize server")
@@ -27,12 +29,21 @@ func main() {
 	flag.IntVar(&width, "w", 18, "width of query cuboid (shorthand)")
 	flag.IntVar(&height, "h", 18, "height of query cuboid (shorthand)")
 	flag.IntVar(&depth, "d", 150, "depth of query cuboid (shorthand)")
+	flag.StringVar(&colorsfile, "colors", "colors.txt", "definition of colors")
 
 	flag.Parse()
 
+	var err error
+	var colors map[string]color.RGBA
+
+	if colors, err = ParseColors(colorsfile); err != nil {
+		log.Fatalf("Cannot open color file: %s", err)
+	}
+
+	_ = colors
+
 	address := fmt.Sprintf("%s:%d", host, port)
 
-	var err error
 	var client *Client
 
 	if client, err = NewClient("tcp", address); err != nil {