// Filename: dcNumericRange.I // Created by: drose (21Jun04) // //////////////////////////////////////////////////////////////////// // // PANDA 3D SOFTWARE // Copyright (c) Carnegie Mellon University. All rights reserved. // // All use of this software is subject to the terms of the revised BSD // license. You should have received a copy of this license along // with this source code in a file named "LICENSE." // //////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::Constructor // Access: Public // Description: //////////////////////////////////////////////////////////////////// template INLINE DCNumericRange:: DCNumericRange() { } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::Constructor // Access: Public // Description: //////////////////////////////////////////////////////////////////// template INLINE DCNumericRange:: DCNumericRange(Number min, Number max) { add_range(min, max); } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::Copy Constructor // Access: Public // Description: //////////////////////////////////////////////////////////////////// template INLINE DCNumericRange:: DCNumericRange(const DCNumericRange ©) : _ranges(copy._ranges) { } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::Copy Assignment Operator // Access: Public // Description: //////////////////////////////////////////////////////////////////// template INLINE void DCNumericRange:: operator = (const DCNumericRange ©) { _ranges = copy._ranges; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::is_in_range // Access: Public // Description: Returns true if the indicated number is within the // specified range, false otherwise. //////////////////////////////////////////////////////////////////// template bool DCNumericRange:: is_in_range(Number num) const { if (_ranges.empty()) { return true; } TYPENAME Ranges::const_iterator ri; for (ri = _ranges.begin(); ri != _ranges.end(); ++ri) { if (num >= (*ri)._min && num <= (*ri)._max) { return true; } } return false; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::validate // Access: Public // Description: Convenience function to validate the indicated // number. If the number is within the specified range, // does nothing; otherwise, if it is outside the range, // sets range_error to true. //////////////////////////////////////////////////////////////////// template INLINE void DCNumericRange:: validate(Number num, bool &range_error) const { if (!is_in_range(num)) { range_error = true; } } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::has_one_value // Access: Public // Description: Returns true if the numeric range specifies exactly // one legal value, false if multiple values are legal. //////////////////////////////////////////////////////////////////// template INLINE bool DCNumericRange:: has_one_value() const { return _ranges.size() == 1 && _ranges[0]._min == _ranges[0]._max; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::get_one_value // Access: Public // Description: If has_one_value() returns true, this returns the one // legal value accepted by the numeric range. //////////////////////////////////////////////////////////////////// template INLINE TYPENAME DCNumericRange::Number DCNumericRange:: get_one_value() const { nassertr(has_one_value(), 0); return _ranges[0]._min; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::generate_hash // Access: Public // Description: //////////////////////////////////////////////////////////////////// template void DCNumericRange:: generate_hash(HashGenerator &hashgen) const { if (!_ranges.empty()) { hashgen.add_int(_ranges.size()); TYPENAME Ranges::const_iterator ri; for (ri = _ranges.begin(); ri != _ranges.end(); ++ri) { // We don't account for the fractional part of floating-point // ranges here. Shouldn't be a real issue. hashgen.add_int((int)(*ri)._min); hashgen.add_int((int)(*ri)._max); } } } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::output // Access: Public // Description: //////////////////////////////////////////////////////////////////// template void DCNumericRange:: output(ostream &out, Number divisor) const { if (!_ranges.empty()) { TYPENAME Ranges::const_iterator ri; ri = _ranges.begin(); output_minmax(out, divisor, *ri); ++ri; while (ri != _ranges.end()) { out << ", "; output_minmax(out, divisor, *ri); ++ri; } } } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::output_char // Access: Public // Description: Outputs the range, formatting the numeric values as // quoted ASCII characters. //////////////////////////////////////////////////////////////////// template void DCNumericRange:: output_char(ostream &out, Number divisor) const { if (divisor != 1) { output(out, divisor); } else { if (!_ranges.empty()) { TYPENAME Ranges::const_iterator ri; ri = _ranges.begin(); output_minmax_char(out, *ri); ++ri; while (ri != _ranges.end()) { out << ", "; output_minmax_char(out, *ri); ++ri; } } } } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::clear // Access: Public // Description: //////////////////////////////////////////////////////////////////// template INLINE void DCNumericRange:: clear() { _ranges.clear(); } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::add_range // Access: Public // Description: Adds a new minmax to the list of ranges. This is // normally called only during dc file parsing. Returns // true if successful, or false if the new minmax // overlaps an existing minmax. //////////////////////////////////////////////////////////////////// template bool DCNumericRange:: add_range(Number min, Number max) { // Check for an overlap. This is probably indicative of a typo and // should be reported. if (max < min) { return false; } TYPENAME Ranges::const_iterator ri; for (ri = _ranges.begin(); ri != _ranges.end(); ++ri) { if ((min >= (*ri)._min && min <= (*ri)._max) || (max >= (*ri)._min && max <= (*ri)._max) || (min < (*ri)._min && max > (*ri)._max)) { return false; } } MinMax minmax; minmax._min = min; minmax._max = max; _ranges.push_back(minmax); return true; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::is_empty // Access: Private // Description: Returns true if the range contains no elements (and // thus allows all numbers), false if it contains at // least one. //////////////////////////////////////////////////////////////////// template INLINE bool DCNumericRange:: is_empty() const { return _ranges.empty(); } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::get_num_ranges // Access: Private // Description: Returns the number of minmax components in the range // description. //////////////////////////////////////////////////////////////////// template INLINE int DCNumericRange:: get_num_ranges() const { return _ranges.size(); } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::get_min // Access: Private // Description: Returns the minimum value defined by the nth component. //////////////////////////////////////////////////////////////////// template INLINE TYPENAME DCNumericRange::Number DCNumericRange:: get_min(int n) const { nassertr(n >= 0 && n < (int)_ranges.size(), 0); return _ranges[n]._min; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::get_max // Access: Private // Description: Returns the maximum value defined by the nth component. //////////////////////////////////////////////////////////////////// template INLINE TYPENAME DCNumericRange::Number DCNumericRange:: get_max(int n) const { nassertr(n >= 0 && n < (int)_ranges.size(), 0); return _ranges[n]._max; } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::output_minmax // Access: Private // Description: Outputs a single element of the range description. //////////////////////////////////////////////////////////////////// template INLINE void DCNumericRange:: output_minmax(ostream &out, Number divisor, const MinMax &range) const { if (divisor == 1) { if (range._min == range._max) { out << range._min; } else { out << range._min << "-" << range._max; } } else { if (range._min == range._max) { out << (double)range._min / (double)divisor; } else { out << (double)range._min / (double)divisor << "-" << (double)range._max / (double)divisor; } } } //////////////////////////////////////////////////////////////////// // Function: DCNumericRange::output_minmax_char // Access: Private // Description: Outputs a single element of the range description. //////////////////////////////////////////////////////////////////// template INLINE void DCNumericRange:: output_minmax_char(ostream &out, const MinMax &range) const { if (range._min == range._max) { DCPacker::enquote_string(out, '\'', string(1, range._min)); } else { DCPacker::enquote_string(out, '\'', string(1, range._min)); out << "-"; DCPacker::enquote_string(out, '\'', string(1, range._max)); } }