From 76608845ca801c34eac09b65c0b7e1520918d97c Mon Sep 17 00:00:00 2001
From: Liangliang Nan <liangliang.nan@gmail.com>
Date: Mon, 16 Sep 2024 09:13:29 +0200
Subject: [PATCH] add comments

---
 applications/FigureMaker/main.cpp | 4 ++--
 easy3d/util/version.h             | 2 +-
 easy3d/viewer/multi_viewer.cpp    | 5 ++++-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/applications/FigureMaker/main.cpp b/applications/FigureMaker/main.cpp
index 9d95f4d6..85ec15f4 100644
--- a/applications/FigureMaker/main.cpp
+++ b/applications/FigureMaker/main.cpp
@@ -37,7 +37,7 @@ int main(int argc, char** argv) {
     // initialize Easy3D.
     initialize(true, true);
 
-    // create a 1 by 1 MultiViewer by default
+    // create a 1 by 1 layout by default
     FigureMaker viewer(1, 1, APP_TITLE);
 
     // usage
@@ -50,7 +50,7 @@ int main(int argc, char** argv) {
         "  ------------------------------------\n"
         "  f: fit model to screen\n"
         "  l: toggle lighting\n"
-        "  d: toggle dividign lines\n"
+        "  d: toggle dividing lines\n"
         "--------------------------------------\n"
     );
 
diff --git a/easy3d/util/version.h b/easy3d/util/version.h
index 7a141e32..9eee0898 100644
--- a/easy3d/util/version.h
+++ b/easy3d/util/version.h
@@ -59,7 +59,7 @@ namespace easy3d {
 #define EASY3D_VERSION_NR 1020503
 
 /// Easy3D release date, in the format YYYYMMDD.
-#define EASY3D_RELEASE_DATE 20240913
+#define EASY3D_RELEASE_DATE 20240916
 
 
 #endif  // EASY3D_UTIL_VERSION_H
diff --git a/easy3d/viewer/multi_viewer.cpp b/easy3d/viewer/multi_viewer.cpp
index 596ce6bd..bf5cab93 100644
--- a/easy3d/viewer/multi_viewer.cpp
+++ b/easy3d/viewer/multi_viewer.cpp
@@ -104,6 +104,9 @@ namespace easy3d {
             int w, h;
             framebuffer_size(w, h);
 
+            // Note: it also possible to use a scaled framebuffer size (to render a larger image).
+            //       This requires setting scaled viewport size (by calling glViewport() for each 
+            //       view in MultiViewer::draw().
             FramebufferObject fbo(w, h, samples_);
             fbo.add_color_buffer();
             fbo.add_depth_buffer();
@@ -117,7 +120,7 @@ namespace easy3d {
             glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 
             const_cast<MultiViewer*>(this)->draw();
-
+            
             fbo.release();
 
             // color render buffer