Add a -transparent-dim=percent flag to set the extra dimming of transparent materials each depth meter.

cmd/mtseeder/baselevel.go

@@ -45,7 +45,7 @@ func order(a, b int) (int, int) {
 func createBaseLevel(
 	address string,
 	xMin, zMin, xMax, zMax int,
-	transparent bool,
+	transparent bool, transparentDim float32,
 	colorsFile, outDir string,
 	numWorkers int) (err error) {
 
@@ -55,6 +55,8 @@ func createBaseLevel(
 		return
 	}
 
+	colors.TransparentDim = transparentDim
+
 	baseDir := filepath.Join(outDir, baseLevelDir)
 	if err = os.MkdirAll(baseDir, os.ModePerm); err != nil {
 		return

cmd/mtseeder/main.go

@@ -8,20 +8,23 @@ import (
 	"flag"
 	"fmt"
 	"log"
+
+	"bitbucket.org/s_l_teichmann/mtsatellite/common"
 )
 
 func main() {
 	var (
-		port          int
-		host          string
-		xMin, zMin    int
-		xMax, zMax    int
-		colorsFile    string
-		outDir        string
-		numWorkers    int
-		skipBaseLevel bool
-		skipPyramid   bool
-		transparent   bool
+		port           int
+		host           string
+		xMin, zMin     int
+		xMax, zMax     int
+		colorsFile     string
+		outDir         string
+		numWorkers     int
+		skipBaseLevel  bool
+		skipPyramid    bool
+		transparent    bool
+		transparentDim float64
 	)
 
 	flag.IntVar(&port, "port", 6379, "port to of mtredisalize server")
@@ -42,15 +45,22 @@ func main() {
 	flag.BoolVar(&skipPyramid, "sp", false, "Do not generate pyramid tiles (shorthand)")
 	flag.BoolVar(&transparent, "transparent", false, "Render transparent blocks.")
 	flag.BoolVar(&transparent, "t", false, "Render transparent blocks (shorthand).")
+	flag.Float64Var(&transparentDim,
+		"transparent-dim", common.DefaultTransparentDim*100.0,
+		"Extra dimming of transparent nodes each depth meter in percent.")
+	flag.Float64Var(&transparentDim,
+		"td", common.DefaultTransparentDim*100.0,
+		"Extra fimming of transparent nodes each depth meter in percent. (shorthand)")
 
 	flag.Parse()
 
 	if !skipBaseLevel {
+		td := common.Clamp32f(float32(transparentDim/100.0), 0.0, 1.0)
 		address := fmt.Sprintf("%s:%d", host, port)
 		if err := createBaseLevel(
 			address,
 			xMin, zMin, xMax, zMax,
-			transparent,
+			transparent, td,
 			colorsFile,
 			outDir,
 			numWorkers); err != nil {