Bug fixed

Author: Seng-Jik

README.md

@@ -40,3 +40,35 @@ ARGS:
     <INPUT>     Symbol image in PNG format
     <OUTPUT>    Output path for SDF image in PNG format
 ```
+
+### Create SDF font atlas from TTF/OTF
+```
+sdftool-font
+Create the sdf font
+
+USAGE:
+    sdftool font [FLAGS] [OPTIONS] <INPUT> <OUTDIR>
+
+FLAGS:
+    -h, --help          Prints help information
+        --no-ascii      Do not generate ascii charset
+        --schinese-1    Generate common standard chinese table 1
+        --schinese-2    Generate common standard chinese table 2
+        --schinese-3    Generate common standard chinese table 3
+    -V, --version       Prints version information
+
+OPTIONS:
+        --margin-x <margin-x>              Margin X on every sdf character in pixels [default: 0]
+        --margin-y <margin-y>              Margin Y on every sdf character in pixels [default: 0]
+        --origin-scale <origin-scale>      Basic font scale before downsample [default: 384]
+        --padding-x <padding-x>            Padding X on every basic character in pixels [default: 24]
+        --padding-y <padding-y>            Padding Y on every basic character in pixels [default: 24]
+        --page-height <page-height>        Single page height in pixels [default: 1024]
+        --page-width <page-width>          Single page width in pixels [default: 1024]
+    -r, --search-radius <search-radius>    Set the radius for edge searching [default: 24]
+    -s, --stride <stride>                  Set the downsample stride size (1 will not downsample) [default: 8]
+
+ARGS:
+    <INPUT>     Input ttf/otf file
+    <OUTDIR>    Output path
+    ```