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firestorm/Gameleap/code/mw4/Tools/TCTb/Terra/Map.hpp
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1.9 KiB
C++

#ifndef MAP_INCLUDED // -*- C++ -*-
#define MAP_INCLUDED
#include <stdlib.h>
#include <iostream.h>
#include "Geom.hpp"
class Map
{
public:
int width;
int height;
int depth; // in bits
real min, max;
real operator()(int i, int j) { return eval(i,j); }
real operator()(real i, real j) { return eval((int)i,(int)j); }
real eval(real i, real j) { return eval((int)i,(int)j); }
virtual real eval(int i, int j) = 0;
virtual void rawRead(istream&) = 0;
virtual void textRead(istream&) = 0;
virtual void *getBlock() { return NULL; }
virtual void findLimits();
};
extern Map *readPGM(istream&);
template<class T>
class DirectMap : public Map
{
T *data;
public:
inline T& ref(int i,int j)
{
#ifdef SAFETY
assert(i>=0); assert(j>=0); assert(i<width); assert(j<height);
#endif
return data[j*width + i];
}
DirectMap(int width, int height);
real eval(int i, int j) { return (real)ref(i,j); }
void *getBlock() { return data; }
void rawRead(istream&);
void textRead(istream&);
};
typedef DirectMap<unsigned char> ByteMap;
typedef DirectMap<unsigned short> ShortMap;
typedef DirectMap<unsigned int> WordMap;
typedef DirectMap<real> RealMap;
template<class T>
DirectMap<T>::DirectMap(int w, int h)
{
width = w;
height = h;
depth = sizeof(T) << 3;
data = (T *)calloc(w*h, sizeof(T));
}
template<class T>
void DirectMap<T>::rawRead(istream& in)
{
char *loc = (char *)data;
int target = width*height*sizeof(T);
while( target>0 )
{
in.read(loc, target);
target -= in.gcount();
loc += in.gcount();
}
}
template<class T>
void DirectMap<T>::textRead(istream& in)
{
for(int j=0;j<height;j++)
for(int i=0;i<width;i++)
{
real val;
in >> val;
ref(i,j) = (T)val;
}
}
#endif