From 8266db9be06e4f7dd1513a4acffe826140329700 Mon Sep 17 00:00:00 2001
From: nuknal <linktolane@gmail.com>
Date: Mon, 30 Sep 2024 15:03:58 +0800
Subject: [PATCH] FUS L2

---
 cmd/warp.go          |  2 +-
 pkg/producer/warp.go | 26 ++++++++++++++++++++------
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/cmd/warp.go b/cmd/warp.go
index 76ac864..d6ff3bd 100644
--- a/cmd/warp.go
+++ b/cmd/warp.go
@@ -40,7 +40,7 @@ func init() {
 
 	cmdWarp.Flags().StringVarP(&warpIn, "input", "i", "", "input image file")
 	cmdWarp.Flags().StringVarP(&warpOut, "output", "o", "", "output image file")
-	cmdWarp.Flags().StringVarP(&warpMeta, "meta", "m", "", "rpc meta file")
+	cmdWarp.Flags().StringVarP(&warpMeta, "meta", "m", "", "meta file")
 	cmdWarp.Flags().StringVarP(&warpRPC, "rpb", "r", "", "rpb file")
 	cmdWarp.Flags().StringVarP(&warpDEM, "dem", "d", "", "dem file")
 }
diff --git a/pkg/producer/warp.go b/pkg/producer/warp.go
index a3eb397..61381c0 100644
--- a/pkg/producer/warp.go
+++ b/pkg/producer/warp.go
@@ -16,10 +16,21 @@ import (
 // gdalwarp -rpc -to "RPC_DEM=/path/to/dem/gdlebm.tif" in.tif out.tif
 
 func L1AtoL2(in, out, meta, rpb, demtif string) error {
-	meta, _ = filepath.Abs(meta)
-	m, err := ParseProductMeta(meta)
-	if err != nil {
-		return err
+	var m *ProductMeta
+	var err error
+
+	sensor := "MSS"
+	reverse := true
+	if meta == "" {
+		sensor = "FUS"
+		reverse = true
+		m = &ProductMeta{}
+	} else {
+		meta, _ = filepath.Abs(meta)
+		m, err = ParseProductMeta(meta)
+		if err != nil {
+			return err
+		}
 	}
 
 	in, _ = filepath.Abs(in)
@@ -45,9 +56,12 @@ func L1AtoL2(in, out, meta, rpb, demtif string) error {
 		return err
 	}
 
-	sensor := "MSS"
 	if strings.Contains(m.ProductID, "PAN") {
 		sensor = "PAN"
+		reverse = false
+	} else if strings.Contains(m.ProductID, "FUS") {
+		sensor = "FUS"
+		reverse = false
 	}
 
 	corners, width, height, err := computeBound(out)
@@ -65,7 +79,7 @@ func L1AtoL2(in, out, meta, rpb, demtif string) error {
 	xmlfile := filepath.Join(dir, id+".meta.xml")
 	writeProductMeta(m, xmlfile)
 
-	GTiffToJPG(out, strings.Replace(out, ".tiff", ".jpg", 1), sensor, false)
+	GTiffToJPG(out, strings.Replace(out, ".tiff", ".jpg", 1), sensor, reverse)
 
 	return nil
 }