1 | /* Copyright (C) 2019 Wildfire Games.
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2 | * This file is part of 0 A.D.
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3 | *
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4 | * 0 A.D. is free software: you can redistribute it and/or modify
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5 | * it under the terms of the GNU General Public License as published by
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6 | * the Free Software Foundation, either version 2 of the License, or
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7 | * (at your option) any later version.
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8 | *
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9 | * 0 A.D. is distributed in the hope that it will be useful,
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 | * GNU General Public License for more details.
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13 | *
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14 | * You should have received a copy of the GNU General Public License
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15 | * along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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16 | */
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17 |
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18 | #include "precompiled.h"
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19 |
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20 | #include "GUIMatrix.h"
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21 |
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22 | #include "maths/Matrix3D.h"
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23 |
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24 | extern int g_xres, g_yres;
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25 | extern float g_GuiScale;
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26 |
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27 | CMatrix3D GetDefaultGuiMatrix()
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28 | {
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29 | float xres = g_xres / g_GuiScale;
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30 | float yres = g_yres / g_GuiScale;
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31 |
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32 | CMatrix3D m;
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33 | m.SetIdentity();
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34 | m.Scale(1.0f, -1.f, 1.0f);
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35 | m.Translate(0.0f, yres, -1000.0f);
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36 |
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37 | CMatrix3D proj;
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38 | proj.SetOrtho(0.f, xres, 0.f, yres, -1.f, 1000.f);
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39 | m = proj * m;
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40 |
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41 | return m;
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42 | }
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