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secondo/Algebras/Raster2/DisplaySType.h
2026-01-23 17:03:45 +08:00

89 lines
3.0 KiB
C++

/*
----
This file is part of SECONDO.
Copyright (C) 2004, University in Hagen, Department of Computer Science,
Database Systems for New Applications.
SECONDO is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
SECONDO is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with SECONDO; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----
*/
#ifndef RASTER2_DISPLAYSTYPE_H
#define RASTER2_DISPLAYSTYPE_H
#include "DisplayTTY.h"
namespace raster2
{
/*
1 Class ~DisplaySType~
The class ~DisplaySType~ provides a display function that can be used by any
type that is based on ~stype$<$T, Helper$>$~.
*/
class DisplaySType: public DisplayFunction
{
public:
DisplaySType() {};
virtual ~DisplaySType() {};
virtual void Display(ListExpr type, ListExpr value) {
if (nl->IsEqual(value, Symbol::UNDEFINED())) {
return;
}
std::cout << "Origin: ("
<< nl->RealValue(nl->First(nl->First(value)))
<< ", " << nl->RealValue(nl->Second(nl->First(value)))
<< ")\n";
std::cout << "Length: "
<< nl->RealValue(nl->Third(nl->First(value)))
<< "\n";
value = nl->Rest(value);
int rows = nl->IntValue(nl->First(nl->First(value)));
int cols = nl->IntValue(nl->Second(nl->First(value)));
value = nl->Rest(value);
std::cout << "Values: ";
bool has_values = false;
while (!nl->IsEmpty(value)) {
ListExpr head = nl->First(value);
value = nl->Rest(value);
int row = nl->IntValue(nl->First(head));
int col = nl->IntValue(nl->Second(head));
ListExpr values = nl->Third(head);
for (int r = 0; r < rows; ++r) {
for (int c = 0; c < cols; ++c) {
int p = 1 + Cardinal(r*rows+c);
ListExpr element = nl->Nth(p,values);
if (!nl->IsEqual(element,Symbol::UNDEFINED())) {
has_values = true;
std::cout << "\n (" << (row + r) << ", "
<< (col + c) << "): "
<< nl->ToString(element);
}
}
}
}
if (!has_values) {
std::cout << "none";
}
}
};
}
#endif /* RASTER2_DISPLAYSTYPE_H */