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#include "StdAfx.h"
#include <sstream>
#include <cstring>
#include "mmgr.h"
#include "ColorMap.h"
#include "Bitmap.h"
#include "Bitmap.h"
#include "FileSystem/FileHandler.h"
#include "Util.h"
#include "Exceptions.h"
std::vector<CColorMap *> CColorMap::colorMaps;
std::map<std::string, CColorMap *> CColorMap::colorMapsMap;
CR_BIND(CColorMap, );
CColorMap::CColorMap(void)
{
map = 0;
}
CColorMap::CColorMap(std::vector<float> &vec)
{
map=0;
if(vec.size()<8) //needs at least two colors
throw content_error("Too few colors in colormap.");
unsigned char *lmap = new unsigned char[vec.size() - vec.size()%4];
xsize = (vec.size() - vec.size()%4)/4;
ysize = 1;
nxsize = xsize-1;
nysize = ysize-1;
for(int i=0; i<xsize*4; i++)
{
lmap[i] = int(vec[i]*255);
}
LoadMap(lmap, xsize*4);
delete [] lmap;
}
CColorMap::CColorMap(std::string filename)
{
map=0;
CBitmap bitmap;
if (!bitmap.Load(filename))
throw content_error("Could not load texture from file " + filename);
if(bitmap.type != CBitmap::BitmapTypeStandardRGBA || (bitmap.xsize<2))
throw content_error("Unsupported bitmap format in file " + filename);
xsize = bitmap.xsize;
ysize = bitmap.ysize;
nxsize = xsize-1;
nysize = ysize-1;
LoadMap(bitmap.mem, xsize*ysize*4);
}
CColorMap::CColorMap(const unsigned char *buf, int num)
{
map=0;
xsize = num/4;
ysize = 1;
LoadMap(buf, num);
nxsize = xsize-1;
nysize = ysize-1;
}
CColorMap::~CColorMap(void)
{
delete [] map;
}
void CColorMap::DeleteColormaps()
{
for(size_t i=0; i<colorMaps.size(); i++)
{
delete colorMaps[i];
}
colorMaps.clear();
}
void CColorMap::LoadMap(const unsigned char *buf, int num)
{
delete [] map;
map = new unsigned char[num];
std::memcpy(map, buf, num);
}
CColorMap* CColorMap::LoadFromBitmapFile(std::string filename)
{
std::string lowfilename = filename;
StringToLowerInPlace(lowfilename);
CColorMap *map;
if(colorMapsMap.find(lowfilename)==colorMapsMap.end())
{
map = new CColorMap(filename);
colorMapsMap[lowfilename] = map;
colorMaps.push_back(map);
}
else
{
map = colorMapsMap.find(lowfilename)->second;
}
return map;
}
CColorMap* CColorMap::LoadFromFloatVector(std::vector<float> &vec)
{
CColorMap *map = new CColorMap(vec);
colorMaps.push_back(map);
return map;
}
CColorMap* CColorMap::LoadFromFloatString(std::string fstring)
{
std::stringstream stream;
stream << fstring;
std::vector<float> vec;
float value;
while(stream >> value)
{
vec.push_back(value);
}
return CColorMap::LoadFromFloatVector(vec);
}
CColorMap* CColorMap::LoadFromDefString(std::string dstring)
{
std::stringstream stream;
stream << dstring;
std::vector<float> vec;
float value;
while(stream >> value)
{
vec.push_back(value);
}
if(vec.size()>0)
return CColorMap::LoadFromFloatVector(vec);
else
return CColorMap::LoadFromBitmapFile("bitmaps\\" + dstring);
}
CColorMap* CColorMap::Load8f(float r1,float g1,float b1,float a1,float r2,float g2,float b2,float a2)
{
std::vector<float> vec;
vec.push_back(r1);
vec.push_back(g1);
vec.push_back(b1);
vec.push_back(a1);
vec.push_back(r2);
vec.push_back(g2);
vec.push_back(b2);
vec.push_back(a2);
return CColorMap::LoadFromFloatVector(vec);
}
CColorMap* 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)
{
std::vector<float> vec;
vec.push_back(r1);
vec.push_back(g1);
vec.push_back(b1);
vec.push_back(a1);
vec.push_back(r2);
vec.push_back(g2);
vec.push_back(b2);
vec.push_back(a2);
vec.push_back(r3);
vec.push_back(g3);
vec.push_back(b3);
vec.push_back(a3);
return CColorMap::LoadFromFloatVector(vec);
}
unsigned char* CColorMap::GetColor(unsigned char *color, float pos)
{
if(pos>=1.0f)
{
*((int*)color)=(((int*)map)[nxsize]);
return color;
}
float fposn = pos*nxsize;
int iposn = (int)fposn;
float fracn = fposn-iposn;
int aa = int(fracn*256);
int ia = 256-aa;
unsigned char *col1 = (unsigned char*)&map[iposn*4];
unsigned char *col2 = (unsigned char*)&map[(iposn+1)*4];
color[0] = (col1[0]*ia + col2[0]*aa)>>8;
color[1] = (col1[1]*ia + col2[1]*aa)>>8;
color[2] = (col1[2]*ia + col2[2]*aa)>>8;
color[3] = (col1[3]*ia + col2[3]*aa)>>8;
return color;
}
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