| 34 | } |
| 35 | |
| 36 | int vtkTreeMapToPolyData::RequestData(vtkInformation* vtkNotUsed(request), |
| 37 | vtkInformationVector** inputVector, vtkInformationVector* outputVector) |
| 38 | { |
| 39 | // get the info objects |
| 40 | vtkInformation* inInfo = inputVector[0]->GetInformationObject(0); |
| 41 | vtkInformation* outInfo = outputVector->GetInformationObject(0); |
| 42 | |
| 43 | // get the input and output |
| 44 | vtkTree* inputTree = vtkTree::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT())); |
| 45 | vtkPolyData* outputPoly = vtkPolyData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT())); |
| 46 | |
| 47 | // For each input vertex create 4 points and 1 cell (quad) |
| 48 | vtkPoints* outputPoints = vtkPoints::New(); |
| 49 | outputPoints->SetNumberOfPoints(inputTree->GetNumberOfVertices() * 4); |
| 50 | vtkCellArray* outputCells = vtkCellArray::New(); |
| 51 | |
| 52 | // Create an array for the point normals |
| 53 | vtkFloatArray* normals = vtkFloatArray::New(); |
| 54 | normals->SetNumberOfComponents(3); |
| 55 | normals->SetNumberOfTuples(inputTree->GetNumberOfVertices() * 4); |
| 56 | normals->SetName("normals"); |
| 57 | |
| 58 | vtkDataArray* coordArray = this->GetInputArrayToProcess(0, inputTree); |
| 59 | if (!coordArray) |
| 60 | { |
| 61 | vtkErrorMacro("Area array not found."); |
| 62 | return 0; |
| 63 | } |
| 64 | vtkDataArray* levelArray = this->GetInputArrayToProcess(1, inputTree); |
| 65 | |
| 66 | // Now set the point coordinates, normals, and insert the cell |
| 67 | for (int i = 0; i < inputTree->GetNumberOfVertices(); i++) |
| 68 | { |
| 69 | // Grab coords from the input |
| 70 | double coords[4]; |
| 71 | coordArray->GetTuple(i, coords); |
| 72 | |
| 73 | double z = 0; |
| 74 | if (levelArray) |
| 75 | { |
| 76 | z = this->LevelDeltaZ * levelArray->GetTuple1(i); |
| 77 | } |
| 78 | else |
| 79 | { |
| 80 | z = this->LevelDeltaZ * inputTree->GetLevel(i); |
| 81 | } |
| 82 | |
| 83 | int index = i * 4; |
| 84 | outputPoints->SetPoint(index, coords[0], coords[2], z); |
| 85 | outputPoints->SetPoint(index + 1, coords[1], coords[2], z); |
| 86 | outputPoints->SetPoint(index + 2, coords[1], coords[3], z); |
| 87 | outputPoints->SetPoint(index + 3, coords[0], coords[3], z); |
| 88 | |
| 89 | // Create an asymmetric gradient on the cells |
| 90 | // this gradient helps differentiate same colored |
| 91 | // cells from their neighbors. The asymmetric |
| 92 | // nature of the gradient is required. |
| 93 | normals->SetComponent(index, 0, 0); |
nothing calls this directly
no test coverage detected