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transfuncfile.cpp

Go to the documentation of this file.

#include "stdafx.h"
#include "transfuncfile.h"
#include <stdio.h>


INDEXLIST CTransfuncFile::LoadTransferFunc(const char *filename, bool &success) {
        success = false;
        FILE *file;
        if ((file = fopen(filename, "rb")) == NULL) {
                success = false;
                return NULL;
        }


        fread(&m_sTransHeader, sizeof(m_sTransHeader), 1, file);
        
        INDEXLIST temp;
        INDICES tempInd;

        for (int i = 0; i < m_sTransHeader.m_bNumber; i++) {
                fread(&m_sTransData, sizeof(m_sTransData), 1, file);
                tempInd.m_sdBegin = m_sTransData.m_dBegin;
                tempInd.m_sdEnd = m_sTransData.m_dEnd;
                tempInd.m_ucAlpha = m_sTransData.m_pcAlpha;
                tempInd.m_scColor = m_sTransData.m_pColor;
                temp.push_back(tempInd);
        }

        fclose(file);

        success = true;
        return temp;
}


INDEXLIST *CTransfuncFile::LoadPresets(int &numPresets) {
        string filename = "transferfunctions/preset_.tff";

        INDEXLIST *templist = new INDEXLIST[10];
        INDEXLIST temp;

        bool success;

        numPresets = 0;
        for (int i = 0; i < 10; i++) {
                filename[24] = i + '0';
                temp = LoadTransferFunc(filename.c_str(), success);
                if (success)
                        templist[numPresets++] = temp;
        }
        return templist;
}


void CTransfuncFile::SaveTransferFunc(INDEXLIST &indexList, string filename) {
        m_sTransHeader.m_pcName;
        m_sTransHeader.m_bNumber = indexList.size();
        FILE *file;

        if ((file = fopen(filename.c_str(), "wb")) == NULL) 
                return;

        INDICES tempInd;

        fwrite(&m_sTransHeader, sizeof(m_sTransHeader), 1, file);
        for (int i = 0; i < indexList.size(); i++) {
                tempInd = indexList[i];
                m_sTransData.m_dBegin = tempInd.m_sdBegin;
                m_sTransData.m_dEnd = tempInd.m_sdEnd;
                m_sTransData.m_pcAlpha = tempInd.m_ucAlpha;
                m_sTransData.m_pColor = tempInd.m_scColor;
                fwrite(&m_sTransData, sizeof(m_sTransData), 1, file);
        }

        fclose(file);
}

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