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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 "System/Color.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
{
public:
CR_DECLARE_STRUCT(CColorMap)
CColorMap() = default;
/// Loads from a float vector
CColorMap(const float* data, size_t size) { Load(data, size); }
/// Loads from a file
CColorMap(const std::string& fileName);
CColorMap(const CColorMap&) = delete;
CColorMap(CColorMap&& cm) { *this = std::move(cm); }
CColorMap& operator = (const CColorMap&) = delete;
CColorMap& operator = (CColorMap&&) = default;
void PostLoad();
void Serialize(creg::ISerializer* s);
public:
/**
* @param color buffer with room for 4 bytes
* @param pos value between 0.0f and 1.0f, returns pointer to color
*/
void GetColor(unsigned char* color, float pos);
void Clear() {
xsize = 2; nxsize = 1;
ysize = 1;
map.clear();
}
void Load(const float* data, size_t size);
private:
void LoadMap(const unsigned char* buf, int num);
public:
static void InitStatic();
static void SerializeColorMaps(creg::ISerializer* s);
/// Load colormap from a bitmap
static CColorMap* LoadFromBitmapFile(const std::string& fileName);
/// Takes a vector with float value 0.0-1.0, every 4 values make up a (RGBA) color
static CColorMap* LoadFromFloatVector(const std::vector<float>& vec) { return LoadFromRawVector(vec.data(), vec.size()); }
static CColorMap* LoadFromRawVector(const float* data, size_t size);
/**
* Load from a string containing a number of float values or filename.
* example: "1.0 0.5 1.0 ... "
*/
static CColorMap* LoadFromDefString(const std::string& defString);
private:
int xsize = 2;
int nxsize = 1;
int ysize = 1;
std::vector<SColor> map;
};
#endif // COLOR_MAP_H
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