Function writePDBHelper

extern/partio/src/lib/io/PDB.cpp:176–252

template<int bits>
bool writePDBHelper(const char* filename,const ParticlesData& p,const bool compressed,std::ostream* errorStream)
{
    unique_ptr<ostream> output(
        compressed ? 
        Gzip_Out(filename,ios::out|ios::binary)
        :new ofstream(filename,ios::out|ios::binary));

    if(!*output){
        if(errorStream) *errorStream<<"Partio Unable to open file "<<filename<<endl;
        return false;
    }

    typename PDB_POLICY<bits>::HEADER h32;
    memset(&h32,0,sizeof(typename PDB_POLICY<bits>::HEADER));
    h32.magic=PDB_MAGIC;
    h32.swap=1;
    h32.version=1.0;
    h32.time=0.0;
    h32.data_size=p.numParticles();
    h32.num_data=p.numAttributes();
    for(int k=0;k<32;k++) h32.padding[k]=0;
    h32.data=0;
    output->write((char*)&h32,sizeof(typename PDB_POLICY<bits>::HEADER));
    
    for(int attrIndex=0;attrIndex<p.numAttributes();attrIndex++){
        ParticleAttribute attr;
        p.attributeInfo(attrIndex,attr);

        typename PDB_POLICY<bits>::CHANNEL_IO cio;
        typename PDB_POLICY<bits>::CHANNEL channel;
        typename PDB_POLICY<bits>::CHANNEL_DATA data_header;
        memset(&cio,0,sizeof(typename PDB_POLICY<bits>::CHANNEL_IO));
        memset(&channel,0,sizeof(typename PDB_POLICY<bits>::CHANNEL));
        memset(&data_header,0,sizeof(typename PDB_POLICY<bits>::CHANNEL_DATA));

        cio.magic=0;
        cio.swap=1;
        cio.encoding=0;
        cio.type=0;
        output->write((char*)&cio,sizeof(typename PDB_POLICY<bits>::CHANNEL_IO));
 
        // TODO: assert cproper count!
        channel.name=0;
        switch(attr.type){
            case INDEXEDSTR:channel.type=PDB_LONG;break;
            case INT:channel.type=PDB_LONG;break;
            case FLOAT:channel.type=PDB_REAL;break;
            case VECTOR:channel.type=PDB_VECTOR;break;
            default: assert(false);
        }
        channel.size=0;
        channel.active_start=0;
        channel.active_end=h32.data_size-1;
        channel.hide=0;
        channel.disconnect=0;
        channel.data=0;
        channel.link=0;
        channel.next=0;