74 lines
1.8 KiB
C++
Executable File
74 lines
1.8 KiB
C++
Executable File
///////////////////////////////////////////////////////////////////////////////
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//
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// Name: LightEnv.h
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// Author: Rich Cross
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// Contact: rich@wildfiregames.com
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//
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// Description: class describing current lighting environment -
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// at the minute, this is only sunlight and ambient light
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// parameters; will be extended to handle dynamic lights at some
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// later date
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef __LIGHTENV_H
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#define __LIGHTENV_H
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#include "Color.h"
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#include "Vector3D.h"
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class CMapWriter;
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class CMapReader;
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///////////////////////////////////////////////////////////////////////////////
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// 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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class CLightEnv
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{
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friend class CMapWriter;
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friend class CMapReader;
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// wierd accessor order to preserve memory layout of the class
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public:
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RGBColor m_SunColor;
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private:
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float m_Elevation;
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float m_Rotation;
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public:
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RGBColor m_TerrainAmbientColor;
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RGBColor m_UnitsAmbientColor;
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CVector3D m_SunDir;
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// get sun direction from a rotation and elevation; defined such that:
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// 0 rotation = (0,0,1)
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// PI/2 rotation = (-1,0,0)
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// 0 elevation = (0,0,0)
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// PI/2 elevation = (0,-1,0)
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float GetElevation() { return m_Elevation; }
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float GetRotation() { return m_Rotation; }
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void SetElevation(float f)
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{
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m_Elevation = f;
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CalculateSunDirection();
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}
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void SetRotation(float f)
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{
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m_Rotation = f;
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CalculateSunDirection();
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}
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void CalculateSunDirection()
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{
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m_SunDir.Y=-float(sin(m_Elevation));
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float scale=1+m_SunDir.Y;
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m_SunDir.X=scale*float(sin(m_Rotation));
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m_SunDir.Z=scale*float(cos(m_Rotation));
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m_SunDir.Normalize();
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}
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};
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#endif
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