Misc.cpp

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/*=============================================================================
TexGen: Geometric textile modeller.
Copyright (C) 2006 Martin Sherburn
 
This program 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.
 
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
=============================================================================*/
 
#include "PrecompiledHeaders.h"
#include "Misc.h"
#include "../units/units.h"
 
namespace TexGen
{
    using namespace std;
 
    COLOR GetIndexedColor(int iIndex)
    {
        static double ColorArray[][3] =
        {
            {   1,  0,  0   },
            {   0,  1,  0   },
            {   0,  0,  1   },
            {   1,  1,  0   },
            {   0,  1,  1   },
            {   1,  0,  1   },
            {   1,  0,  0.5 },
            {   0,  0.5,    1   },
            {   1,  0.5,    0   },
            {   0.5,    1,  0   },
        };
        double* Color = ColorArray[iIndex%(sizeof(ColorArray)/(3*sizeof(double)))];
        return COLOR(Color[0], Color[1], Color[2]);
    }
 
    void CopyToRange(vector<XYZ> &Offsets, XYZ Vector, int iLowerLimit, int iUpperLimit)
    {
        vector<XYZ> OriginalOffsets = Offsets;
        vector<XYZ>::iterator itOffset;
        Offsets.clear();
        int i;
        for (i=iLowerLimit; i<=iUpperLimit; ++i)
        {
            for (itOffset=OriginalOffsets.begin(); itOffset != OriginalOffsets.end(); ++itOffset)
            {
                Offsets.push_back(*itOffset+i*Vector);
            }
        }
    }
 
    // Warning possible memory leaks contained within the units library!!!
    double ConvertUnits(double dValue, std::string SourceUnits, std::string TargetUnits)
    {
        units_clear_exception();
        double dResult = dValue*units_convert(const_cast<char*>(SourceUnits.c_str()), const_cast<char*>(TargetUnits.c_str()));
        char* szError = units_check_exception();
        if (szError)
            TGERROR("Error converting units: " << szError);
        return dResult;
    }
 
    bool CompatibleUnits(std::string SourceUnits, std::string TargetUnits, std::string *pErrorMessage)
    {
        units_clear_exception();
        units_convert(const_cast<char*>(SourceUnits.c_str()), const_cast<char*>(TargetUnits.c_str()));
        char* szError = units_check_exception();
        if (szError)
        {
            if (pErrorMessage)
                *pErrorMessage = szError;
            return false;
        }
        else
            return true;
    }
 
    std::string ReduceUnits(std::string Units)
    {
        units_clear_exception();
        std::string Result = units_reduce(const_cast<char*>(Units.c_str()));
        char* szError = units_check_exception();
        if (szError)
            TGERROR("Error reducing units: " << szError);
        return Result;
    }
 
    void AddNewUnits(std::string NewUnit, std::string BaseUnits)
    {
        units_clear_exception();
        units_new(const_cast<char*>(NewUnit.c_str()), const_cast<char*>(BaseUnits.c_str()));
        char* szError = units_check_exception();
        if (szError)
            TGERROR("Error adding new units: " << szError);
    }
 
    std::string StripPath(std::string Filename)
    {
        int iPos = Filename.find_last_of("\\/");
        if (iPos == std::string::npos)
            return Filename;
        else
            return Filename.substr(iPos+1);
    }
 
    void AddExtensionIfMissing(std::string &Filename, std::string Extension)
    {
        if (Filename.size()<Extension.size() || Filename.rfind(Extension) != Filename.size()-Extension.size())
            Filename += Extension;
    }
 
    std::string RemoveExtension( std::string &Filename, std::string Extension)
    {
        int iPos = Filename.rfind(Extension);
        if (iPos == std::string::npos)
            return Filename;
        return Filename.substr(0, iPos);
    }
 
    std::string ReplaceFilenameSpaces(std::string Filename)
    {
        int iPos = Filename.find_last_of("\\/");
        int iEnd = Filename.size();
        std::string str;
        if (iPos == std::string::npos)
            str = Filename;
        else
            str = Filename.substr(iPos+1);
 
        size_t found;
 
        found=str.find_first_of(" ");
        while (found!=string::npos)
        {
            str[found]='_';
            found=str.find_first_of(" ",found+1);
        }
 
        if (iPos == std::string::npos)
            return str;
        else
        {
            return Filename.replace( iPos+1, iEnd, str );
        }
    }
 
    void WriteOrientationsHeader( std::ostream &Output )
    {
        Output << "********************" << std::endl;
        Output << "*** ORIENTATIONS ***" << std::endl;
        Output << "********************" << std::endl;
        Output << "** Orientation vectors" << std::endl;
        Output << "** 1st vector represents the fibre direction" << std::endl;
        Output << "** 2nd vector is an arbitrary vector perpendicular to the first" << std::endl;
    }
 
    void WriteElementsHeader( std::ostream &Output )
    {
        Output << "********************" << std::endl;
        Output << "*** ELEMENT DATA ***" << std::endl;
        Output << "********************" << std::endl;
        Output << "** Element data stored as a depvars " << std::endl;
        Output << "** 1 - Element index" << std::endl;
        Output << "** 2 - Yarn Index (-1 for matrix, first yarn starting at 0) " << std::endl;
        Output << "** 3/4 - Location (x and y cross-section coordinates of element relative to yarn centerline) " << std::endl;
        Output << "** 5 - Volume fraction " << std::endl;
        Output << "** 6 - Distance of element from the surface of the yarn (for yarn elements only, distance is negative) " << std::endl;
    }
}