zero() method added to all point classes

Only some of the mPointX classes had the zero() method implemented.
This commit adds the method to all point classes.

Engine/source/math/mPoint2.h

@@ -48,6 +48,7 @@ class Point2I
    void set(S32 in_x, S32 in_y);            ///< Set (x,y) position
    void setMin(const Point2I&);             ///< Store lesser co-ordinates from parameter in this point.
    void setMax(const Point2I&);             ///< Store greater co-ordinates from parameter in this point.
+   void zero();                             ///< Zero all values
 
    //-------------------------------------- Math mutators
    void neg();                              ///< Invert sign of point's co-ordinates.
@@ -123,6 +124,8 @@ class Point2F
    /// @param   c   Interpolation factor (0.0 .. 1.0).
    void interpolate(const Point2F& a, const Point2F& b, const F32 c);
 
+   void zero();                         ///< Zero all values
+
    operator F32*() { return &x; }
    operator const F32*() const { return &x; }
 
@@ -213,6 +216,8 @@ class Point2D
    /// @param   c   Interpolation factor (0.0 .. 1.0).
    void interpolate(const Point2D &a, const Point2D &b, const F64 c);
 
+   void zero();                         ///< Zero all values
+
    operator F64*() { return &x; }
    operator const F64*() const { return &x; }
 
@@ -301,6 +306,12 @@ inline void Point2I::setMax(const Point2I& _test)
 }
 
 
+inline void Point2I::zero()
+{
+   x = y = 0;
+}
+
+
 inline void Point2I::neg()
 {
    x = -x;
@@ -483,6 +494,12 @@ inline void Point2F::interpolate(const Point2F& _rFrom, const Point2F& _to, cons
 }
 
 
+inline void Point2F::zero()
+{
+   x = y = 0.0f;
+}
+
+
 inline bool Point2F::isZero() const
 {
    return (x == 0.0f) && (y == 0.0f);
@@ -720,6 +737,12 @@ inline void Point2D::interpolate(const Point2D& _rFrom, const Point2D& _to, cons
 }
 
 
+inline void Point2D::zero()
+{
+   x = y = 0.0;
+}
+
+
 inline bool Point2D::isZero() const
 {
    return (x == 0.0f) && (y == 0.0f);

Engine/source/math/mPoint3.h

@@ -54,6 +54,7 @@ class Point3I
    void set(S32 in_x, S32 in_y, S32 in_z); ///< Set co-ordinates.
    void setMin(const Point3I&); ///< Store lesser co-ordinates in this point.
    void setMax(const Point3I&); ///< Store greater co-ordinates in this point.
+   void zero();                 ///< Zero all values
 
    //-------------------------------------- Math mutators
    void neg();                      ///< Invert co-ordinate's signs.
@@ -222,6 +223,7 @@ class Point3D
    void setMax(const Point3D&);
 
    void interpolate(const Point3D&, const Point3D&, F64);
+   void zero();
 
    operator F64*() { return (&x); }
    operator const F64*() const { return &x; }
@@ -320,6 +322,11 @@ inline void Point3I::setMax(const Point3I& _test)
    z = (_test.z > z) ? _test.z : z;
 }
 
+inline void Point3I::zero()
+{
+   x = y = z = 0;
+}
+
 inline void Point3I::neg()
 {
    x = -x;
@@ -810,6 +817,11 @@ inline void Point3D::interpolate(const Point3D& _from, const Point3D& _to, F64 _
    m_point3D_interpolate( _from, _to, _factor, *this);
 }
 
+inline void Point3D::zero()
+{
+   x = y = z = 0.0;
+}
+
 inline bool Point3D::isZero() const
 {
    return (x == 0.0f) && (y == 0.0f) && (z == 0.0f);

Engine/source/math/mPoint4.h

@@ -42,6 +42,8 @@ class Point4I
    Point4I() {}
    Point4I(S32 _x, S32 _y, S32 _z, S32 _w);
 
+   void zero();   ///< Zero all values
+
    S32 x;                                                   
    S32 y;                                                   
    S32 z;                                                   
@@ -85,6 +87,8 @@ class Point4F
    /// @param   _factor Interpolation factor (0.0 .. 1.0).
    void interpolate(const Point4F& _pt1, const Point4F& _pt2, F32 _factor);
 
+   void zero();
+
    operator F32*() { return (&x); }
    operator const F32*() const { return &x; }
    
@@ -111,6 +115,14 @@ class Point4F
 
 typedef Point4F Vector4F;   ///< Points can be vectors!
 
+//------------------------------------------------------------------------------
+//-------------------------------------- Point4I
+
+inline void Point4I::zero()
+{
+   x = y = z = w = 0;
+}
+
 //------------------------------------------------------------------------------
 //-------------------------------------- Point4F
 //
@@ -149,6 +161,11 @@ inline void Point4F::interpolate(const Point4F& _from, const Point4F& _to, F32 _
    w = (_from.w * (1.0f - _factor)) + (_to.w * _factor);
 }
 
+inline void Point4F::zero()
+{
+   x = y = z = w = 0.0f;
+}
+
 inline Point4F& Point4F::operator=(const Point3F &_vec)
 {
    x = _vec.x;