gfxQuad.h (1636B)
1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- 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 gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, 16 const gfxPoint& aFour) { 17 mPoints[0] = aOne; 18 mPoints[1] = aTwo; 19 mPoints[2] = aThree; 20 mPoints[3] = aFour; 21 } 22 23 bool Contains(const gfxPoint& aPoint) { 24 return (gfxLineSegment(mPoints[0], mPoints[1]) 25 .PointsOnSameSide(aPoint, mPoints[2]) && 26 gfxLineSegment(mPoints[1], mPoints[2]) 27 .PointsOnSameSide(aPoint, mPoints[3]) && 28 gfxLineSegment(mPoints[2], mPoints[3]) 29 .PointsOnSameSide(aPoint, mPoints[0]) && 30 gfxLineSegment(mPoints[3], mPoints[0]) 31 .PointsOnSameSide(aPoint, mPoints[1])); 32 } 33 34 gfxRect GetBounds() { 35 gfxFloat min_x, max_x; 36 gfxFloat min_y, max_y; 37 38 min_x = max_x = mPoints[0].x; 39 min_y = max_y = mPoints[0].y; 40 41 for (int i = 1; i < 4; i++) { 42 min_x = std::min(mPoints[i].x.value, min_x); 43 max_x = std::max(mPoints[i].x.value, max_x); 44 min_y = std::min(mPoints[i].y.value, min_y); 45 max_y = std::max(mPoints[i].y.value, max_y); 46 } 47 return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y); 48 } 49 50 gfxPoint mPoints[4]; 51 }; 52 53 #endif /* GFX_QUAD_H */