Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef GFX_QUAD_H
       7             : #define GFX_QUAD_H
       8             : 
       9             : #include "gfxTypes.h"
      10             : #include "gfxRect.h"
      11             : #include "gfxLineSegment.h"
      12             : #include <algorithm>
      13             : 
      14             : struct gfxQuad {
      15           0 :     gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, const gfxPoint& aFour)
      16           0 :     {
      17           0 :         mPoints[0] = aOne;
      18           0 :         mPoints[1] = aTwo;
      19           0 :         mPoints[2] = aThree;
      20           0 :         mPoints[3] = aFour;
      21           0 :     }
      22             : 
      23           0 :     bool Contains(const gfxPoint& aPoint)
      24             :     {
      25           0 :         return (gfxLineSegment(mPoints[0], mPoints[1]).PointsOnSameSide(aPoint, mPoints[2]) &&
      26           0 :                 gfxLineSegment(mPoints[1], mPoints[2]).PointsOnSameSide(aPoint, mPoints[3]) &&
      27           0 :                 gfxLineSegment(mPoints[2], mPoints[3]).PointsOnSameSide(aPoint, mPoints[0]) &&
      28           0 :                 gfxLineSegment(mPoints[3], mPoints[0]).PointsOnSameSide(aPoint, mPoints[1]));
      29             :     }
      30             : 
      31           0 :     gfxRect GetBounds()
      32             :     {
      33             :         gfxFloat min_x, max_x;
      34             :         gfxFloat min_y, max_y;
      35             : 
      36           0 :         min_x = max_x = mPoints[0].x;
      37           0 :         min_y = max_y = mPoints[0].y;
      38             : 
      39           0 :         for (int i=1; i<4; i++) {
      40           0 :           min_x = std::min(mPoints[i].x, min_x);
      41           0 :           max_x = std::max(mPoints[i].x, max_x);
      42           0 :           min_y = std::min(mPoints[i].y, min_y);
      43           0 :           max_y = std::max(mPoints[i].y, max_y);
      44             :         }
      45           0 :         return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
      46             :     }
      47             : 
      48             :     gfxPoint mPoints[4];
      49             : };
      50             : 
      51             : #endif /* GFX_QUAD_H */