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