129 lines
2.9 KiB
C++
129 lines
2.9 KiB
C++
// Filename: coordinateSystem.cxx
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// Created by: drose (24Sep99)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "coordinateSystem.h"
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#include "config_linmath.h"
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#include "configVariableEnum.h"
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#include "dconfig.h"
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#include "notify.h"
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#include <ctype.h>
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static ConfigVariableEnum<CoordinateSystem> default_cs
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("coordinate-system", CS_zup_right,
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"The default coordinate system to use throughout Panda for rendering, "
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"user input, and matrix operations, unless specified otherwise.");
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CoordinateSystem
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get_default_coordinate_system() {
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CoordinateSystem cs = default_cs;
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return (cs == CS_default || cs == CS_invalid) ? CS_zup_right : cs;
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}
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CoordinateSystem
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parse_coordinate_system_string(const string &str) {
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// First, make sure the string is lowercase before we compare it, so
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// we'll be case-insensitive.
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string lstr = str;
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for (string::iterator si = lstr.begin();
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si != lstr.end();
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++si) {
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(*si) = tolower(*si);
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}
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if (lstr == "default") {
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return CS_default;
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} else if (lstr == "z-up" || lstr == "z-up-right") {
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return CS_zup_right;
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} else if (lstr == "y-up" || lstr == "y-up-right") {
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return CS_yup_right;
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} else if (lstr == "z-up-left") {
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return CS_zup_left;
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} else if (lstr == "y-up-left") {
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return CS_yup_left;
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}
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return CS_invalid;
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}
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bool
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is_right_handed(CoordinateSystem cs) {
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if (cs == CS_default) {
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cs = get_default_coordinate_system();
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}
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switch (cs) {
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case CS_zup_right:
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case CS_yup_right:
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return true;
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case CS_zup_left:
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case CS_yup_left:
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return false;
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default:
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linmath_cat.error()
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<< "Invalid coordinate system value: " << (int)cs << "\n";
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nassertr(false, false);
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return false;
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}
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}
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ostream &
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operator << (ostream &out, CoordinateSystem cs) {
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switch (cs) {
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case CS_default:
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return out << "default";
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case CS_zup_right:
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return out << "zup_right";
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case CS_yup_right:
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return out << "yup_right";
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case CS_zup_left:
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return out << "zup_left";
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case CS_yup_left:
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return out << "yup_left";
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case CS_invalid:
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return out << "invalid";
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}
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linmath_cat.error()
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<< "Invalid coordinate_system value: " << (int)cs << "\n";
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nassertr(false, out);
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return out;
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}
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istream &
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operator >> (istream &in, CoordinateSystem &cs) {
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string word;
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in >> word;
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cs = parse_coordinate_system_string(word);
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return in;
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}
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