// FlowField2D constructor
int FlowField2D::SaveFlowField2D(char* filename){
int fd_g,pf;
ostream* o_stream = &cout;
ofstream* f_stream = (ofstream*)(o_stream);
ssize_t max_write = 1024L*1024L*1024L;
ssize_t one_write = 0L;
ssize_t len = 0L;
off_t off = 0L;
LoadSwapFile2D(filename,GetX(),GetY(),sizeof(FlowNode2D< FP, NUM_COMPONENTS>),&pf,&fd_g,f_stream);
char* TmpPtr=(char*)GetMatrixPtr();
if(GetMatrixSize() > max_write) {
for(off = 0L,one_write = max_write; len < GetMatrixSize(); off += max_write) {
len += pwrite64(fd_g,TmpPtr+off,one_write,off);
if(GetMatrixSize() - len < max_write)
one_write = GetMatrixSize() - len;
}
if(len != GetMatrixSize())
*f_stream << "Error: len(" << len << ") != MatrixSize(" << GetMatrixSize() << ") " << endl << flush;
} else {
len = pwrite64(fd_g,GetMatrixPtr(),GetMatrixSize(),0L);
}
close(fd_g);
return len;
}
void XShader::SetShader( const MATRIX& mMVP,
float r, float g, float b, float a )
{
glUseProgram( m_glProgram );
glUniformMatrix4fv( m_locUniforms[UNIFORM_MVP_MATRIX], 1, 0, GetMatrixPtr( mMVP ) );
if( m_locUniforms[UNIFORM_COLOR] >= 0 )
glUniform4f( m_locUniforms[UNIFORM_COLOR], r, g, b, a );
}
void XShader::SetUniformMVP( const MATRIX& mMVP )
{
glUseProgram( m_glProgram );
glUniformMatrix4fv( m_locUniforms[UNIFORM_MVP_MATRIX], 1, 0, GetMatrixPtr( mMVP ) );
}
