Add initial prototype.

3-mid/physics/implement/bullet/source/c/bullet-conversions.cpp

@@ -0,0 +1,58 @@
+#include "bullet-conversions.h"
+
+
+btVector3
+to_btVector3 (Vector_3*   From)
+{
+  return btVector3 (From->x,
+                    From->y,
+                    From->z);
+}
+
+
+
+Vector_3
+to_Vector_3 (btVector3&   From)
+{
+  Vector_3    Result;
+
+  Result.x = From [0];
+  Result.y = From [1];
+  Result.z = From [2];
+
+  return Result;
+}
+
+
+
+btTypedConstraint*
+to_bullet_Joint (Joint*   From)
+{
+  return (btTypedConstraint*) From;
+}
+
+
+
+Joint*
+to_bt3_Joint (btTypedConstraint*   From)
+{
+  return (Joint*) From;
+}
+
+
+
+
+btRigidBody*
+to_bullet_Object (Object*   From)
+{
+  return (btRigidBody*) From;
+}
+
+
+Object*
+to_bt3_Object (btRigidBody*   From)
+{
+  return (Object*) From;
+}
+
+