Moved C++ code into new libslic3r directory

xs/src/libslic3r/GCode.hpp

@@ -0,0 +1,35 @@
+#ifndef slic3r_GCode_hpp_
+#define slic3r_GCode_hpp_
+
+#include <myinit.h>
+#include <string>
+
+namespace Slic3r {
+
+// draft for a binary representation of a G-code line
+
+enum GCodeCmdType {
+    gcctSyncMotion,
+    gcctExtrude,
+    gcctResetE,
+    gcctSetTemp,
+    gcctSetTempWait,
+    gcctToolchange,
+    gcctCustom
+};
+
+class GCodeCmd {
+    public:
+    GCodeCmdType type;
+    float X, Y, Z, E, F;
+    unsigned short T, S;
+    std::string custom, comment;
+    float xy_dist; // cache
+    
+    GCodeCmd(GCodeCmdType type)
+        : type(type), X(0), Y(0), Z(0), E(0), F(0), T(-1), S(0), xy_dist(-1) {};
+};
+
+}
+
+#endif