more progress on compositing

main.go

@@ -6,27 +6,32 @@ import (
 	"math/rand"
 	"os"
 	"time"
+	"flag"
 
 	gui "github.com/gen2brain/raylib-go/raygui"
 	rl "github.com/gen2brain/raylib-go/raylib"
 	//"github.com/ojrac/opensimplex-go"
 )
 
-const (
-	snapshotsDir = "snapshots"
-)
+var snapshotsPath string
 
 func main() {
 
+	log := log.New(os.Stdout, "", log.Ldate|log.Ltime|log.Lshortfile)
+
+	flag.StringVar(&snapshotsPath, "path", "snapshots", "Path to snapshots and db")
+	flag.Parse()
+
 	var sourceWidth int32 = 8000
 	var sourceHeight int32 = 6400
 
 	var targetWidth int32 = int32(1600)
 	var targetHeight int32 = int32(1000)
 
-	os.MkdirAll(snapshotsDir, 0755)
-	log := log.New(os.Stdout, "", log.Ldate|log.Ltime|log.Lshortfile)
-	storage, err := NewStorage(snapshotsDir)
+	log.Printf("Storing snapshots at '%s'\n", snapshotsPath)
+
+	os.MkdirAll(snapshotsPath, 0755)
+	storage, err := NewStorage(snapshotsPath)
 	if err != nil {
 		log.Printf("Error loading storage: %v\n", err)
 		os.Exit(1)
@@ -46,7 +51,7 @@ func main() {
 
 	rng := rand.New(rand.NewSource(0))
 	//imageField := NewImageField("/home/d/Dropbox/art/passage/data/david.png")
-	imageField := NewImageField("/home/d/Dropbox/art/passage/data/moses_statue.jpg")
+	imageField := NewImageField("/home/d/Dropbox/art/data/moses_statue.jpg")
 	field :=
 		&TranslateField {
 			x: -float32(sourceWidth / 2.0),
@@ -61,7 +66,6 @@ func main() {
 
 	sierpinskiLayer := &SierpinskiArrow { dirty: true }
 
-
 	//sketch.AddColorLayer("background-magenta", rl.Magenta)
 	sketch.AddLayer("field", &FieldLayer{field: field, loColor: rl.NewColor(0, 0, 0, 0), hiColor: rl.Yellow, dirty: true})
 	contourLayer := NewContourLayer(&sketch, rng, field)

sketch.go

@@ -253,8 +253,6 @@ func (s *Sketch) Capture() *SketchCapture {
 	}
 }
 
-
-
 func NewLayerConfig() LayerConfig {
 	return LayerConfig {
 		visible: true,