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comparison: gfx/thebes/gfxQuad.h
gfx/thebes/gfxQuad.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:80024011a2ca |
|---|---|
| 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 gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, const gfxPoint& aFour) | |
| 16 { | |
| 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 { | |
| 25 return (gfxLineSegment(mPoints[0], mPoints[1]).PointsOnSameSide(aPoint, mPoints[2]) && | |
| 26 gfxLineSegment(mPoints[1], mPoints[2]).PointsOnSameSide(aPoint, mPoints[3]) && | |
| 27 gfxLineSegment(mPoints[2], mPoints[3]).PointsOnSameSide(aPoint, mPoints[0]) && | |
| 28 gfxLineSegment(mPoints[3], mPoints[0]).PointsOnSameSide(aPoint, mPoints[1])); | |
| 29 } | |
| 30 | |
| 31 gfxRect GetBounds() | |
| 32 { | |
| 33 gfxFloat min_x, max_x; | |
| 34 gfxFloat min_y, max_y; | |
| 35 | |
| 36 min_x = max_x = mPoints[0].x; | |
| 37 min_y = max_y = mPoints[0].y; | |
| 38 | |
| 39 for (int i=1; i<4; i++) { | |
| 40 min_x = std::min(mPoints[i].x, min_x); | |
| 41 max_x = std::max(mPoints[i].x, max_x); | |
| 42 min_y = std::min(mPoints[i].y, min_y); | |
| 43 max_y = std::max(mPoints[i].y, max_y); | |
| 44 } | |
| 45 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 */ |
