LCOV - code coverage report
Current view: directory - objdir/dist/include/mozilla/gfx - BasePoint3D.h (source / functions) Found Hit Coverage
Test: app.info Lines: 24 0 0.0 %
Date: 2012-06-02 Functions: 11 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  * ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Corporation code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Matt Woodrow <mwoodrow@mozilla.com>
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #ifndef MOZILLA_BASEPOINT3D_H_
      39                 : #define MOZILLA_BASEPOINT3D_H_
      40                 : 
      41                 : namespace mozilla {
      42                 : namespace gfx {
      43                 : 
      44                 : /**
      45                 :  * Do not use this class directly. Subclass it, pass that subclass as the
      46                 :  * Sub parameter, and only use that subclass. This allows methods to safely
      47                 :  * cast 'this' to 'Sub*'.
      48                 :  */
      49                 : template <class T, class Sub>
      50                 : struct BasePoint3D {
      51                 :   T x, y, z;
      52                 : 
      53                 :   // Constructors
      54               0 :   BasePoint3D() : x(0), y(0), z(0) {}
      55               0 :   BasePoint3D(T aX, T aY, T aZ) : x(aX), y(aY), z(aZ) {}
      56                 : 
      57                 :   void MoveTo(T aX, T aY, T aZ) { x = aX; y = aY; z = aZ; }
      58                 :   void MoveBy(T aDx, T aDy, T aDz) { x += aDx; y += aDy; z += aDz; }
      59                 : 
      60                 :   // Note that '=' isn't defined so we'll get the
      61                 :   // compiler generated default assignment operator
      62                 : 
      63               0 :   T& operator[](int aIndex) {
      64               0 :     NS_ABORT_IF_FALSE(aIndex >= 0 && aIndex <= 2, "Invalid array index");
      65               0 :     return *((&x)+aIndex);
      66                 :   }
      67                 : 
      68                 :   const T& operator[](int aIndex) const {
      69                 :     NS_ABORT_IF_FALSE(aIndex >= 0 && aIndex <= 2, "Invalid array index");
      70                 :     return *((&x)+aIndex);
      71                 :   }
      72                 : 
      73                 :   bool operator==(const Sub& aPoint) const {
      74                 :     return x == aPoint.x && y == aPoint.y && z == aPoint.z;
      75                 :   }
      76               0 :   bool operator!=(const Sub& aPoint) const {
      77               0 :     return x != aPoint.x || y != aPoint.y || z != aPoint.z;
      78                 :   }
      79                 : 
      80               0 :   Sub operator+(const Sub& aPoint) const {
      81               0 :     return Sub(x + aPoint.x, y + aPoint.y, z + aPoint.z);
      82                 :   }
      83               0 :   Sub operator-(const Sub& aPoint) const {
      84               0 :     return Sub(x - aPoint.x, y - aPoint.y, z - aPoint.z);
      85                 :   }
      86                 :   Sub& operator+=(const Sub& aPoint) {
      87                 :     x += aPoint.x;
      88                 :     y += aPoint.y;
      89                 :     z += aPoint.z;
      90                 :     return *static_cast<Sub*>(this);
      91                 :   }
      92                 :   Sub& operator-=(const Sub& aPoint) {
      93                 :     x -= aPoint.x;
      94                 :     y -= aPoint.y;
      95                 :     z -= aPoint.z;
      96                 :     return *static_cast<Sub*>(this);
      97                 :   }
      98                 : 
      99               0 :   Sub operator*(T aScale) const {
     100               0 :     return Sub(x * aScale, y * aScale, z * aScale);
     101                 :   }
     102                 :   Sub operator/(T aScale) const {
     103                 :     return Sub(x / aScale, y / aScale, z / aScale);
     104                 :   }
     105                 : 
     106               0 :   Sub& operator*=(T aScale) {
     107               0 :     x *= aScale;
     108               0 :     y *= aScale;
     109               0 :     z *= aScale;
     110               0 :     return *static_cast<Sub*>(this);
     111                 :   }
     112                 : 
     113                 :   Sub& operator/=(T aScale) {
     114                 :       x /= aScale;
     115                 :       y /= aScale;
     116                 :       z /= aScale;
     117                 :       return *static_cast<Sub*>(this);
     118                 :   }
     119                 : 
     120               0 :   Sub operator-() const {
     121               0 :     return Sub(-x, -y, -z);
     122                 :   }
     123                 : 
     124               0 :   Sub CrossProduct(const Sub& aPoint) const {
     125                 :       return Sub(y * aPoint.z - aPoint.y * z,
     126                 :                  z * aPoint.x - aPoint.z * x,
     127               0 :                  x * aPoint.y - aPoint.x * y);
     128                 :   }
     129                 : 
     130               0 :   T DotProduct(const Sub& aPoint) const {
     131               0 :       return x * aPoint.x + y * aPoint.y + z * aPoint.z;
     132                 :   }
     133                 : 
     134                 :   T Length() const {
     135                 :       return sqrt(x*x + y*y + z*z);
     136                 :   }
     137                 : 
     138                 :   // Invalid for points with distance from origin of 0.
     139                 :   void Normalize() {
     140                 :       *this /= Length();
     141                 :   }
     142                 : };
     143                 : 
     144                 : }
     145                 : }
     146                 : 
     147                 : #endif /* MOZILLA_BASEPOINT3D_H_ */

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