diff --git a/src/conversion.h b/src/conversion.h
index 2d7ca8a..5a7cd39 100644
--- a/src/conversion.h
+++ b/src/conversion.h
@@ -1,12 +1,19 @@
 #pragma once
 
-#include "GlyphBox.h"
-#include "glyph-generators.h"
+//#include "GlyphBox.h"
+//#include "glyph-generators.h"
 #include "ofMain.h"
-#include "BitmapAtlasStorage.h"
-#include "GlyphGeometry.h"
+//#include "BitmapAtlasStorage.h"
+//#include "GlyphGeometry.h"
 #include <msdf-atlas-gen/msdf-atlas-gen.h>
 
+#define F26DOT6_TO_DOUBLE(x) (1 / 64. * double(x))
+#define F16DOT16_TO_DOUBLE(x) (1 / 65536. * double(x))
+#define DOUBLE_TO_F16DOT16(x) FT_Fixed(65536. * x)
+#define F26DOT6_TO_FLOAT(x) (1.0f / 64.f * float(x))
+#define F16DOT16_TO_FLOAT(x) (1.0f / 65536.f * float(x))
+#define FLOAT_TO_F16DOT16(x) FT_Fixed(65536.f * x)
+
 namespace ofxMsdfgen {
 using GlyphBox = msdf_atlas::GlyphBox;
 using GlyphGeometry = msdf_atlas::GlyphGeometry;