source/maths/Rect.cpp

   1 /* Copyright (C) 2021 Wildfire Games.
   2  * This file is part of 0 A.D.
   3  *
   4  * 0 A.D. is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * 0 A.D. is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "precompiled.h"
  19
  20 #include "Rect.h"
  21
  22 #include "maths/Size2D.h"
  23 #include "maths/Vector2D.h"
  24
  25 CRect::CRect() :
  26         left(0.f), top(0.f), right(0.f), bottom(0.f)
  27 {
  28 }
  29
  30 CRect::CRect(const CRect& rect) :
  31         left(rect.left), top(rect.top), right(rect.right), bottom(rect.bottom)
  32 {
  33 }
  34
  35 CRect::CRect(const CVector2D& pos) :
  36         left(pos.X), top(pos.Y), right(pos.X), bottom(pos.Y)
  37 {
  38 }
  39
  40 CRect::CRect(const CSize2D& size) :
  41         left(0.f), top(0.f), right(size.Width), bottom(size.Height)
  42 {
  43 }
  44
  45 CRect::CRect(const CVector2D& upperleft, const CVector2D& bottomright) :
  46         left(upperleft.X), top(upperleft.Y), right(bottomright.X), bottom(bottomright.Y)
  47 {
  48 }
  49
  50 CRect::CRect(const CVector2D& pos, const CSize2D& size) :
  51         left(pos.X), top(pos.Y), right(pos.X + size.Width), bottom(pos.Y + size.Height)
  52 {
  53 }
  54
  55 CRect::CRect(const float l, const float t, const float r, const float b) :
  56         left(l), top(t), right(r), bottom(b)
  57 {
  58 }
  59
  60 CRect& CRect::operator=(const CRect& a)
  61 {
  62         left = a.left;
  63         top = a.top;
  64         right = a.right;
  65         bottom = a.bottom;
  66         return *this;
  67 }
  68
  69 bool CRect::operator==(const CRect &a) const
  70 {
  71         return  (left == a.left &&
  72                          top == a.top &&
  73                          right == a.right &&
  74                          bottom == a.bottom);
  75 }
  76
  77 bool CRect::operator!=(const CRect& a) const
  78 {
  79         return !(*this == a);
  80 }
  81
  82 CRect CRect::operator-() const
  83 {
  84         return CRect(-left, -top, -right, -bottom);
  85 }
  86
  87 CRect CRect::operator+() const
  88 {
  89         return *this;
  90 }
  91
  92 CRect CRect::operator+(const CRect& a) const
  93 {
  94         return CRect(left + a.left, top + a.top, right + a.right, bottom + a.bottom);
  95 }
  96
  97 CRect CRect::operator+(const CVector2D& a) const
  98 {
  99         return CRect(left + a.X, top + a.Y, right + a.X, bottom + a.Y);
 100 }
 101
 102 CRect CRect::operator+(const CSize2D& a) const
 103 {
 104         return CRect(left + a.Width, top + a.Height, right + a.Width, bottom + a.Height);
 105 }
 106
 107 CRect CRect::operator-(const CRect& a) const
 108 {
 109         return CRect(left - a.left, top - a.top, right - a.right, bottom - a.bottom);
 110 }
 111
 112 CRect CRect::operator-(const CVector2D& a) const
 113 {
 114         return CRect(left - a.X, top - a.Y, right - a.X, bottom - a.Y);
 115 }
 116
 117 CRect CRect::operator-(const CSize2D& a) const
 118 {
 119         return CRect(left - a.Width, top - a.Height, right - a.Width, bottom - a.Height);
 120 }
 121
 122 void CRect::operator+=(const CRect& a)
 123 {
 124         left += a.left;
 125         top += a.top;
 126         right += a.right;
 127         bottom += a.bottom;
 128 }
 129
 130 void CRect::operator+=(const CVector2D& a)
 131 {
 132         left += a.X;
 133         top += a.Y;
 134         right += a.X;
 135         bottom += a.Y;
 136 }
 137
 138 void CRect::operator+=(const CSize2D& a)
 139 {
 140         left += a.Width;
 141         top += a.Height;
 142         right += a.Width;
 143         bottom += a.Height;
 144 }
 145
 146 void CRect::operator-=(const CRect& a)
 147 {
 148         left -= a.left;
 149         top -= a.top;
 150         right -= a.right;
 151         bottom -= a.bottom;
 152 }
 153
 154 void CRect::operator-=(const CVector2D& a)
 155 {
 156         left -= a.X;
 157         top -= a.Y;
 158         right -= a.X;
 159         bottom -= a.Y;
 160 }
 161
 162 void CRect::operator-=(const CSize2D& a)
 163 {
 164         left -= a.Width;
 165         top -= a.Height;
 166         right -= a.Width;
 167         bottom -= a.Height;
 168 }
 169
 170 float CRect::GetWidth() const
 171 {
 172         return right-left;
 173 }
 174
 175 float CRect::GetHeight() const
 176 {
 177         return bottom-top;
 178 }
 179
 180 CSize2D CRect::GetSize() const
 181 {
 182         return CSize2D(right - left, bottom - top);
 183 }
 184
 185 CVector2D CRect::TopLeft() const
 186 {
 187         return CVector2D(left, top);
 188 }
 189
 190 CVector2D CRect::TopRight() const
 191 {
 192         return CVector2D(right, top);
 193 }
 194
 195 CVector2D CRect::BottomLeft() const
 196 {
 197         return CVector2D(left, bottom);
 198 }
 199
 200 CVector2D CRect::BottomRight() const
 201 {
 202         return CVector2D(right, bottom);
 203 }
 204
 205 CVector2D CRect::CenterPoint() const
 206 {
 207         return CVector2D((left + right) / 2.f, (top + bottom) / 2.f);
 208 }
 209
 210 bool CRect::PointInside(const CVector2D& point) const
 211 {
 212         return (point.X >= left &&
 213                         point.X <= right &&
 214                         point.Y >= top &&
 215                         point.Y <= bottom);
 216 }
 217
 218 CRect CRect::Scale(float x, float y) const
 219 {
 220         return CRect(left * x, top * y, right * x, bottom * y);
 221 }