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coordinateSystem.cxx
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139 lines (113 loc) · 3.16 KB
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/**
* 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."
*
* @file coordinateSystem.cxx
* @author drose
* @date 1999-09-24
*/
#include "coordinateSystem.h"
#include "config_linmath.h"
#include "configVariableEnum.h"
#include "string_utils.h"
#include "dconfig.h"
#include "pnotify.h"
#include <ctype.h>
using std::istream;
using std::ostream;
using std::ostringstream;
using std::string;
static ConfigVariableEnum<CoordinateSystem> default_cs
("coordinate-system", CS_zup_right,
PRC_DESC("The default coordinate system to use throughout Panda for "
"rendering, user input, and matrix operations, unless specified "
"otherwise."));
CoordinateSystem
get_default_coordinate_system() {
CoordinateSystem cs = default_cs;
return (cs == CS_default || cs == CS_invalid) ? CS_zup_right : cs;
}
CoordinateSystem
parse_coordinate_system_string(const string &str) {
if (cmp_nocase_uh(str, "default") == 0) {
return CS_default;
} else if (cmp_nocase_uh(str, "zup") == 0 ||
cmp_nocase_uh(str, "zup-right") == 0 ||
cmp_nocase_uh(str, "z-up") == 0 ||
cmp_nocase_uh(str, "z-up-right") == 0) {
return CS_zup_right;
} else if (cmp_nocase_uh(str, "yup") == 0 ||
cmp_nocase_uh(str, "yup-right") == 0 ||
cmp_nocase_uh(str, "y-up") == 0 ||
cmp_nocase_uh(str, "y-up-right") == 0) {
return CS_yup_right;
} else if (cmp_nocase_uh(str, "z-up-left") == 0 ||
cmp_nocase_uh(str, "zup-left") == 0) {
return CS_zup_left;
} else if (cmp_nocase_uh(str, "y-up-left") == 0 ||
cmp_nocase_uh(str, "yup-left") == 0) {
return CS_yup_left;
}
return CS_invalid;
}
string
format_coordinate_system(CoordinateSystem cs) {
ostringstream strm;
strm << cs;
return strm.str();
}
bool
is_right_handed(CoordinateSystem cs) {
if (cs == CS_default) {
cs = get_default_coordinate_system();
}
switch (cs) {
case CS_zup_right:
case CS_yup_right:
return true;
case CS_zup_left:
case CS_yup_left:
return false;
default:
linmath_cat.error()
<< "Invalid coordinate system value: " << (int)cs << "\n";
nassertr(false, false);
return false;
}
}
ostream &
operator << (ostream &out, CoordinateSystem cs) {
switch (cs) {
case CS_default:
return out << "default";
case CS_zup_right:
return out << "zup_right";
case CS_yup_right:
return out << "yup_right";
case CS_zup_left:
return out << "zup_left";
case CS_yup_left:
return out << "yup_left";
case CS_invalid:
return out << "invalid";
}
linmath_cat->error()
<< "Invalid coordinate_system value: " << (int)cs << "\n";
nassertr(false, out);
return out;
}
istream &
operator >> (istream &in, CoordinateSystem &cs) {
string word;
in >> word;
cs = parse_coordinate_system_string(word);
if (cs == CS_invalid) {
linmath_cat->error()
<< "Invalid coordinate_system string: " << word << "\n";
}
return in;
}