source/graphics/LightEnv.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 "graphics/LightEnv.h"
  21
  22 #include "maths/MathUtil.h"
  23
  24
  25 CLightEnv::CLightEnv()
  26         : m_Elevation(DEGTORAD(45)),
  27         m_Rotation(DEGTORAD(315)),
  28         m_SunColor(1.5, 1.5, 1.5),
  29         m_AmbientColor(0x50/255.f, 0x60/255.f, 0x85/255.f),
  30         m_FogColor(0xCC/255.f, 0xCC/255.f, 0xE5/255.f),
  31         m_FogFactor(0.000f),
  32         m_FogMax(0.5f),
  33         m_Brightness(0.0f), m_Contrast(1.0f), m_Saturation(0.99f), m_Bloom(0.1999f)
  34 {
  35         CalculateSunDirection();
  36 }
  37
  38 void CLightEnv::SetElevation(float f)
  39 {
  40         m_Elevation = f;
  41         CalculateSunDirection();
  42 }
  43
  44 void CLightEnv::SetRotation(float f)
  45 {
  46         m_Rotation = f;
  47         CalculateSunDirection();
  48 }
  49
  50 void CLightEnv::CalculateSunDirection()
  51 {
  52         m_SunDir.Y = -sinf(m_Elevation);
  53         float scale = 1 + m_SunDir.Y;
  54         m_SunDir.X = scale * sinf(m_Rotation);
  55         m_SunDir.Z = scale * cosf(m_Rotation);
  56         m_SunDir.Normalize();
  57 }