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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef COLOR_MAP_H
#define COLOR_MAP_H
#include <string>
#include <vector>
#include <list>
#include <map>
#include "System/creg/creg_cond.h"
/**
* Simple class to interpolate between 32bit RGBA colors
* Do not delete an instance of this class created by any Load function,
* they are deleted automaticly.
*/
class CColorMap
{
CR_DECLARE_STRUCT(CColorMap)
public:
CColorMap();
/// Loads from a float vector
CColorMap(const std::vector<float>& vec);
/// Loads from a file
CColorMap(const std::string& fileName);
/// Loads from a char buffer as one dimensional array
CColorMap(const unsigned char* buf, int num);
~CColorMap();
/// Load colormap from a bitmap
static CColorMap* LoadFromBitmapFile(const std::string& fileName);
/// Takes a vector with float value 0.0-1.0, 4 values makes up a rgba color
static CColorMap* LoadFromFloatVector(const std::vector<float>& vec);
/**
* Load from a string containing a number of float values.
* example: "1.0 0.5 1.0 ... "
*/
static CColorMap* LoadFromFloatString(const std::string& fString);
static CColorMap* LoadFromDefString(const std::string& dString);
/// To load default values
static CColorMap* Load12f(float r1, float g1, float b1, float a1, float r2, float g2, float b2, float a2, float r3, float g3, float b3, float a3);
/**
* @param color buffer with room for 4 bytes
* @param pos value between 0.0f and 1.0f, returns pointer to color
*/
unsigned char* GetColor(unsigned char* color, float pos);
static void DeleteColormaps();
protected:
std::vector<unsigned char> map;
int xsize;
int nxsize;
int ysize;
int nysize;
void LoadMap(const unsigned char* buf, int num);
static std::vector<CColorMap*> colorMaps;
static std::map<std::string, CColorMap*> colorMapsMap;
};
#endif // COLOR_MAP_H
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