Add initial prototype.

3-mid/physics/implement/c_math/source/c/c_math.cpp

@@ -0,0 +1,26 @@
+#include "c_math.h"
+
+
+  Matrix_3x3::
+  Matrix_3x3 (Real*    First) : m00 (First[0]),  m01 (First[1]),  m02 (First[2]),
+                                m10 (First[3]),  m11 (First[4]),  m12 (First[5]),
+                                m20 (First[6]),  m21 (First[7]),  m22 (First[8])
+  {};
+
+
+  Matrix_3x3::
+  Matrix_3x3 (Real     m00,  Real   m01,  Real   m02,
+              Real     m10,  Real   m11,  Real   m12,
+              Real     m20,  Real   m21,  Real   m22) : m00 (m00),  m01 (m01),  m02 (m02),
+                                                        m10 (m10),  m11 (m11),  m12 (m12),
+                                                        m20 (m20),  m21 (m21),  m22 (m22)
+  {};
+
+
+  Matrix_4x4::
+  Matrix_4x4 (Real*    First) : m00 (First[ 0]),  m01 (First[ 1]),  m02 (First[ 2]),  m03 (First[ 3]),
+                                m10 (First[ 4]),  m11 (First[ 5]),  m12 (First[ 6]),  m13 (First[ 7]),
+                                m20 (First[ 8]),  m21 (First[ 9]),  m22 (First[10]),  m23 (First[11]),
+                                m30 (First[12]),  m31 (First[13]),  m32 (First[14]),  m33 (First[15])
+  {};
+

3-mid/physics/implement/c_math/source/c/c_math.h

@@ -0,0 +1,78 @@
+#ifndef C_MATH_H
+#define C_MATH_H
+
+
+//
+/// Provides a simple C++ interface to math structures used by the simple Box2D and Bullet3D C interfaces.
+//
+
+extern "C"
+{
+
+  typedef float   Real;
+
+
+
+  struct Vector_2
+  {
+    Vector_2 () {};
+    Vector_2 (Real x, Real y) : x (x),  y (y)   {};
+
+
+    Real   x, y;
+  };
+
+
+  struct Vector_3
+  {
+    Vector_3 () {};
+    Vector_3 (Real x, Real y, Real z) : x (x),  y (y),  z (z)   {};
+
+
+    Real   x, y, z;
+  };
+
+
+  typedef int   Index;
+
+  struct Triangle
+  {
+    Triangle () {};
+    Triangle (Real a, Real b, Real c) : a (a),  b (b),  c (c)   {};
+
+
+    Index   a, b, c;
+  };
+
+
+
+
+  struct Matrix_3x3
+  {
+    Matrix_3x3 () {};
+    Matrix_3x3 (Real*    First);
+    Matrix_3x3 (Real     m00,  Real   m01,  Real   m02,
+                Real     m10,  Real   m11,  Real   m12,
+                Real     m20,  Real   m21,  Real   m22);
+
+    Real   m00,  m01,  m02,
+           m10,  m11,  m12,
+           m20,  m21,  m22;
+  };
+
+
+
+  struct Matrix_4x4
+  {
+    Matrix_4x4 () {};
+    Matrix_4x4 (Real*    First);
+
+    Real   m00,  m01,  m02,  m03,
+           m10,  m11,  m12,  m13,
+           m20,  m21,  m22,  m23,
+           m30,  m31,  m32,  m33;
+  };
+
+}
+
+#endif