bb
157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* CLightEnv, a class describing the current lights
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*/
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#ifndef INCLUDED_LIGHTENV
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#define INCLUDED_LIGHTENV
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#include "graphics/Color.h"
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#include "maths/MathUtil.h"
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#include "maths/Vector3D.h"
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class CMapWriter;
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class CMapReader;
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/**
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* Class CLightEnv: description of a lighting environment - contains all the
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* necessary parameters for representation of the lighting within a scenario
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*/
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class CLightEnv
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{
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public:
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RGBColor m_SunColor;
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RGBColor m_AmbientColor;
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RGBColor m_FogColor;
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float m_FogFactor;
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float m_FogMax;
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float m_Brightness, m_Contrast, m_Saturation, m_Bloom;
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CLightEnv();
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float GetElevation() const { return m_Elevation; }
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float GetRotation() const { return m_Rotation; }
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const CVector3D& GetSunDir() const { return m_SunDir; }
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void SetElevation(float f);
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void SetRotation(float f);
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/**
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* Calculate brightness of a point of a unit with the given normal vector,
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* for rendering with CPU lighting.
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* The resulting color contains both ambient and diffuse light.
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* To cope with sun overbrightness, the color is scaled by 0.5.
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*
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* @param normal normal vector (must have length 1)
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*/
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RGBColor EvaluateUnitScaled(const CVector3D& normal) const
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{
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float dot = -normal.Dot(m_SunDir);
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RGBColor color = m_AmbientColor;
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if (dot > 0)
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color += m_SunColor * dot;
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return color * 0.5f;
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}
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// Comparison operators
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bool operator==(const CLightEnv& o) const
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{
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return m_Elevation == o.m_Elevation &&
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m_Rotation == o.m_Rotation &&
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m_SunColor == o.m_SunColor &&
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m_AmbientColor == o.m_AmbientColor &&
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m_FogColor == o.m_FogColor &&
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m_FogFactor == o.m_FogFactor &&
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m_FogMax == o.m_FogMax &&
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m_Brightness == o.m_Brightness &&
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m_Contrast == o.m_Contrast &&
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m_Saturation == o.m_Saturation &&
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m_Bloom == o.m_Bloom;
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}
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bool operator!=(const CLightEnv& o) const
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{
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return !(*this == o);
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}
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private:
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friend class CMapWriter;
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friend class CMapReader;
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friend class CXMLReader;
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/**
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* Height of sun above the horizon, in radians.
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* For example, an elevation of M_PI/2 means the sun is straight up.
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*/
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float m_Elevation;
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/**
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* Direction of sun on the compass, in radians.
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* For example, a rotation of zero means the sun is in the direction (0,0,-1)
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* and a rotation of M_PI/2 means the sun is in the direction (1,0,0) (not taking
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* elevation into account).
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*/
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float m_Rotation;
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/**
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* Vector corresponding to m_Elevation and m_Rotation.
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* Updated by CalculateSunDirection.
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*/
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CVector3D m_SunDir;
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void CalculateSunDirection();
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};
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#endif // INCLUDED_LIGHTENV
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