michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GFX_QUAD_H
michael@0: #define GFX_QUAD_H
michael@0: 
michael@0: #include "gfxTypes.h"
michael@0: #include "gfxRect.h"
michael@0: #include "gfxLineSegment.h"
michael@0: #include <algorithm>
michael@0: 
michael@0: struct gfxQuad {
michael@0:     gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, const gfxPoint& aFour)
michael@0:     {
michael@0:         mPoints[0] = aOne;
michael@0:         mPoints[1] = aTwo;
michael@0:         mPoints[2] = aThree;
michael@0:         mPoints[3] = aFour;
michael@0:     }
michael@0: 
michael@0:     bool Contains(const gfxPoint& aPoint)
michael@0:     {
michael@0:         return (gfxLineSegment(mPoints[0], mPoints[1]).PointsOnSameSide(aPoint, mPoints[2]) &&
michael@0:                 gfxLineSegment(mPoints[1], mPoints[2]).PointsOnSameSide(aPoint, mPoints[3]) &&
michael@0:                 gfxLineSegment(mPoints[2], mPoints[3]).PointsOnSameSide(aPoint, mPoints[0]) &&
michael@0:                 gfxLineSegment(mPoints[3], mPoints[0]).PointsOnSameSide(aPoint, mPoints[1]));
michael@0:     }
michael@0: 
michael@0:     gfxRect GetBounds()
michael@0:     {
michael@0:         gfxFloat min_x, max_x;
michael@0:         gfxFloat min_y, max_y;
michael@0: 
michael@0:         min_x = max_x = mPoints[0].x;
michael@0:         min_y = max_y = mPoints[0].y;
michael@0: 
michael@0:         for (int i=1; i<4; i++) {
michael@0:           min_x = std::min(mPoints[i].x, min_x);
michael@0:           max_x = std::max(mPoints[i].x, max_x);
michael@0:           min_y = std::min(mPoints[i].y, min_y);
michael@0:           max_y = std::max(mPoints[i].y, max_y);
michael@0:         }
michael@0:         return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
michael@0:     }
michael@0: 
michael@0:     gfxPoint mPoints[4];
michael@0: };
michael@0: 
michael@0: #endif /* GFX_QUAD_H */