/* -*- 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.value, min_x);
max_x = std::max(mPoints[i].x.value, max_x);
min_y = std::min(mPoints[i].y.value, min_y);
max_y = std::max(mPoints[i].y.value, max_y);
}
return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
}
gfxPoint mPoints[
4];
};
#endif /* GFX_QUAD_H */