OpenTTD Source: src/core/geometry_func.cpp Source File

OpenTTD Source 13.1

geometry_func.cpp
Go to the documentation of this file.
1 /*
2 * This file is part of OpenTTD.
3 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6 */
7
10 #include "../stdafx.h"
11 #include "geometry_func.hpp"
12 #include "math_func.hpp"
13
14 #include "../safeguards.h"
15
22 Dimension maxdim(const Dimension &d1, const Dimension &d2)
23 {
24 Dimension d;
25 d.width = std::max(d1.width, d2.width);
26 d.height = std::max(d1.height, d2.height);
27 return d;
28 }
29
36 Rect BoundingRect(const Rect &r1, const Rect &r2)
37 {
38 /* If either the first or the second is empty, return the other. */
39 if (IsEmptyRect(r1)) return r2;
40 if (IsEmptyRect(r2)) return r1;
41
42 Rect r;
43
44 r.top = std::min(r1.top, r2.top);
45 r.bottom = std::max(r1.bottom, r2.bottom);
46 r.left = std::min(r1.left, r2.left);
47 r.right = std::max(r1.right, r2.right);
48
49 return r;
50 }
51
52 const RectPadding RectPadding::zero = {0, 0, 0, 0};
Dimension
Dimensions (a width and height) of a rectangle in 2D.
Definition: geometry_type.hpp:27
math_func.hpp
maxdim
Dimension maxdim(const Dimension &d1, const Dimension &d2)
Compute bounding box of both dimensions.
Definition: geometry_func.cpp:22
RectPadding
Padding dimensions to apply to each side of a Rect.
Definition: geometry_type.hpp:47
BoundingRect
Rect BoundingRect(const Rect &r1, const Rect &r2)
Compute the bounding rectangle around two rectangles.
Definition: geometry_func.cpp:36
IsEmptyRect
static bool IsEmptyRect(const Rect &r)
Check if a rectangle is empty.
Definition: geometry_func.hpp:22
geometry_func.hpp
Rect
Specification of a rectangle with absolute coordinates of all edges.
Definition: geometry_type.hpp:69