LCOV - app.info - objdir/dist/include/mozilla/gfx/BasePoint4D.h

LCOV - code coverage report
| Current view: | directory - objdir/dist/include/mozilla/gfx - BasePoint4D.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 46 | 0 | 0.0 %
| Date: | 2012-06-02 | Functions: | 19 | 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_BASEPOINT4D_H_
          39                 : #define MOZILLA_BASEPOINT4D_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 BasePoint4D {
          51                 :   T x, y, z, w;
          52                 :
          53                 :   // Constructors
          54               0 :   BasePoint4D() : x(0), y(0), z(0), w(0) {}
          55               0 :   BasePoint4D(T aX, T aY, T aZ, T aW) : x(aX), y(aY), z(aZ), w(aW) {}
          56                 :
          57                 :   void MoveTo(T aX, T aY, T aZ, T aW) { x = aX; y = aY; z = aZ; w = aW; }
          58                 :   void MoveBy(T aDx, T aDy, T aDz, T aDw) { x += aDx; y += aDy; z += aDz; w += aDw; }
          59                 :
          60                 :   // Note that '=' isn't defined so we'll get the
          61                 :   // compiler generated default assignment operator
          62                 :
          63               0 :   bool operator==(const Sub& aPoint) const {
          64                 :     return x == aPoint.x && y == aPoint.y &&
          65               0 :            z == aPoint.z && w == aPoint.w;
          66                 :   }
          67                 :   bool operator!=(const Sub& aPoint) const {
          68                 :     return x != aPoint.x || y != aPoint.y ||
          69                 :            z != aPoint.z || w != aPoint.w;
          70                 :   }
          71                 :
          72               0 :   Sub operator+(const Sub& aPoint) const {
          73               0 :     return Sub(x + aPoint.x, y + aPoint.y, z + aPoint.z, w + aPoint.w);
          74                 :   }
          75               0 :   Sub operator-(const Sub& aPoint) const {
          76               0 :     return Sub(x - aPoint.x, y - aPoint.y, z - aPoint.z, w - aPoint.w);
          77                 :   }
          78               0 :   Sub& operator+=(const Sub& aPoint) {
          79               0 :     x += aPoint.x;
          80               0 :     y += aPoint.y;
          81               0 :     z += aPoint.z;
          82               0 :     w += aPoint.w;
          83               0 :     return *static_cast<Sub*>(this);
          84                 :   }
          85               0 :   Sub& operator-=(const Sub& aPoint) {
          86               0 :     x -= aPoint.x;
          87               0 :     y -= aPoint.y;
          88               0 :     z -= aPoint.z;
          89               0 :     w -= aPoint.w;
          90               0 :     return *static_cast<Sub*>(this);
          91                 :   }
          92                 :
          93               0 :   Sub operator*(T aScale) const {
          94               0 :     return Sub(x * aScale, y * aScale, z * aScale, w * aScale);
          95                 :   }
          96                 :   Sub operator/(T aScale) const {
          97                 :     return Sub(x / aScale, y / aScale, z / aScale, w / aScale);
          98                 :   }
          99                 :
         100               0 :   Sub& operator*=(T aScale) {
         101               0 :     x *= aScale;
         102               0 :     y *= aScale;
         103               0 :     z *= aScale;
         104               0 :     w *= aScale;
         105               0 :     return *static_cast<Sub*>(this);
         106                 :   }
         107                 :
         108               0 :   Sub& operator/=(T aScale) {
         109               0 :     x /= aScale;
         110               0 :     y /= aScale;
         111               0 :     z /= aScale;
         112               0 :     w /= aScale;
         113               0 :     return *static_cast<Sub*>(this);
         114                 :   }
         115                 :
         116                 :   Sub operator-() const {
         117                 :     return Sub(-x, -y, -z, -w);
         118                 :   }
         119                 :
         120               0 :   T& operator[](int aIndex) {
         121               0 :     NS_ABORT_IF_FALSE(aIndex >= 0 && aIndex <= 3, "Invalid array index");
         122               0 :     return *((&x)+aIndex);
         123                 :   }
         124                 :
         125               0 :   const T& operator[](int aIndex) const {
         126               0 :     NS_ABORT_IF_FALSE(aIndex >= 0 && aIndex <= 3, "Invalid array index");
         127               0 :     return *((&x)+aIndex);
         128                 :   }
         129                 :
         130               0 :   T DotProduct(const Sub& aPoint) const {
         131               0 :     return x * aPoint.x + y * aPoint.y + z * aPoint.z + w * aPoint.w;
         132                 :   }
         133                 :
         134                 :   // Ignores the 4th component!
         135               0 :   Sub CrossProduct(const Sub& aPoint) const {
         136                 :       return Sub(y * aPoint.z - aPoint.y * z,
         137                 :           z * aPoint.x - aPoint.z * x,
         138                 :           x * aPoint.y - aPoint.x * y,
         139               0 :           0);
         140                 :   }
         141                 :
         142               0 :   T Length() const {
         143               0 :     return sqrt(x*x + y*y + z*z + w*w);
         144                 :   }
         145                 :
         146                 :   void Normalize() {
         147                 :     *this /= Length();
         148                 :   }
         149                 : };
         150                 :
         151                 : }
         152                 : }
         153                 :
         154                 : #endif /* MOZILLA_BASEPOINT4D_H_ */

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