59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
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#pragma once
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#ifndef CELL_POSITION_INCLUDED
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#define CELL_POSITION_INCLUDED
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#include <algorithm>
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using std::min;
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using std::max;
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// Identifies cells by frame and layer rather than row and column
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class CellPosition {
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int _frame; // a frame number. corresponds to row in vertical xsheet
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int _layer; // a layer number. corresponds to col in vertical xsheet
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public:
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CellPosition() : _frame(0), _layer(0) {}
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CellPosition(int frame, int layer) : _frame(frame), _layer(layer) {}
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int frame() const { return _frame; }
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int layer() const { return _layer; }
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void setFrame(int frame) { _frame = frame; }
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void setLayer(int layer) { _layer = layer; }
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CellPosition &operator=(const CellPosition &that) = default;
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operator bool() const { return _frame || _layer; }
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CellPosition operator+(const CellPosition &add) {
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return CellPosition(_frame + add._frame, _layer + add._layer);
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}
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CellPosition operator*(const CellPosition &mult) {
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return CellPosition(_frame * mult._frame, _layer * mult._layer);
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}
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void ensureValid() {
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if (_frame < 0) _frame = 0;
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if (_layer < 0) _layer = 0;
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}
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};
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// A square range identified by two corners
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class CellRange {
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CellPosition _from, _to; // from.frame <= to.frame && from.layer <= to.layer
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public:
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CellRange() {}
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CellRange(const CellPosition &from, const CellPosition &to)
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: _from(min(from.frame(), to.frame()), min(from.layer(), to.layer()))
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, _to(max(from.frame(), to.frame()), max(from.layer(), to.layer())) {}
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const CellPosition &from() const { return _from; }
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const CellPosition &to() const { return _to; }
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CellRange &operator=(const CellRange &that) = default;
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};
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#endif
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