------------------------------------------------------------------------------
| 68 | |
| 69 | //------------------------------------------------------------------------------ |
| 70 | void vtkSegYReaderInternal::LoadTraces(int* extent) |
| 71 | { |
| 72 | std::streamoff traceStartPos = FIRST_TRACE_START_POS; |
| 73 | std::streamoff fileSize = vtkSegYIOUtils::Instance()->getFileSize(this->In); |
| 74 | |
| 75 | // allocate traces vector |
| 76 | int dims[3] = { extent[1] - extent[0] + 1, extent[3] - extent[2] + 1, extent[5] - extent[4] + 1 }; |
| 77 | |
| 78 | bool is3d = extent[3] - extent[2] > 1; |
| 79 | this->Traces.resize(dims[0] * dims[1], nullptr); |
| 80 | size_t traceCount = 0; |
| 81 | while (traceStartPos + 240 < fileSize) |
| 82 | { |
| 83 | vtkSegYTrace* pTrace = new vtkSegYTrace(); |
| 84 | this->TraceReader->ReadTrace(traceStartPos, this->In, this->FormatCode, pTrace); |
| 85 | size_t loc = traceCount; |
| 86 | if (is3d) |
| 87 | { |
| 88 | loc = pTrace->CrosslineNumber - extent[0] + (pTrace->InlineNumber - extent[2]) * dims[0]; |
| 89 | } |
| 90 | this->Traces[loc] = pTrace; |
| 91 | traceCount++; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | //------------------------------------------------------------------------------ |
| 96 | bool vtkSegYReaderInternal::ReadHeader() |
no test coverage detected