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// Copyright (c) 1997 Philip A. Hardin (pahardin@cs.utexas.edu)
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License v2 or later.
#ifndef DIMENSION_h
#define DIMENSION_h
#include "general.h"
#include "pt3d.h"
/************************************************************************/
struct dimension {
typedef double coord; // coordinate type
enum dimProperty {unique, symmetric, half, quarter, numDimProps};
coord value; // value of dimension
dimProperty prop; // property (description) of the
// dimension
dimension *refDim; // ptr to reference dimension
// (used if prop != unique)
pt3d prod; // parital product
dimension() {};
dimension(coord v, dimProperty dp=unique, dimension *rd=NULL)
: value(v), prop(dp), refDim(rd) {};
~dimension() {}; // so STL won't produce irritating warmings...
bool operator< (const dimension& d) const {return value <d.value;};
bool operator==(const dimension& d) const {return value==d.value;};
void MakePartialProds(const double mtrxRow[4]);
void MakePartialProds();
void Print() const;
};
// compute the 3 partial products for this dimension
inline void dimension::MakePartialProds(const double mtrxRow[4]) {
prod= pt3d(mtrxRow) * value;
}
// same as above, but add an offset
inline void dimension::MakePartialProds() {
prod= -refDim->prod;
}
#endif
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