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Diffstat (limited to 'gfx/thebes/gfxQuad.h')
-rw-r--r-- | gfx/thebes/gfxQuad.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gfx/thebes/gfxQuad.h b/gfx/thebes/gfxQuad.h new file mode 100644 index 0000000000..76c6717e39 --- /dev/null +++ b/gfx/thebes/gfxQuad.h @@ -0,0 +1,53 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef GFX_QUAD_H +#define GFX_QUAD_H + +#include "gfxTypes.h" +#include "gfxRect.h" +#include "gfxLineSegment.h" +#include <algorithm> + +struct gfxQuad { + gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, + const gfxPoint& aFour) { + mPoints[0] = aOne; + mPoints[1] = aTwo; + mPoints[2] = aThree; + mPoints[3] = aFour; + } + + bool Contains(const gfxPoint& aPoint) { + return (gfxLineSegment(mPoints[0], mPoints[1]) + .PointsOnSameSide(aPoint, mPoints[2]) && + gfxLineSegment(mPoints[1], mPoints[2]) + .PointsOnSameSide(aPoint, mPoints[3]) && + gfxLineSegment(mPoints[2], mPoints[3]) + .PointsOnSameSide(aPoint, mPoints[0]) && + gfxLineSegment(mPoints[3], mPoints[0]) + .PointsOnSameSide(aPoint, mPoints[1])); + } + + gfxRect GetBounds() { + gfxFloat min_x, max_x; + gfxFloat min_y, max_y; + + min_x = max_x = mPoints[0].x; + min_y = max_y = mPoints[0].y; + + for (int i = 1; i < 4; i++) { + min_x = std::min(mPoints[i].x, min_x); + max_x = std::max(mPoints[i].x, max_x); + min_y = std::min(mPoints[i].y, min_y); + max_y = std::max(mPoints[i].y, max_y); + } + return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y); + } + + gfxPoint mPoints[4]; +}; + +#endif /* GFX_QUAD_H */ |