vtkSmartPointer<vtkPolyData> mitk::ImageVtkMapper2D::CreateOutlinePolyData(mitk::BaseRenderer* renderer ){ LocalStorage* localStorage = this->GetLocalStorage(renderer); //get the min and max index values of each direction int* extent = localStorage->m_ReslicedImage->GetExtent(); int xMin = extent[0]; int xMax = extent[1]; int yMin = extent[2]; int yMax = extent[3]; int* dims = localStorage->m_ReslicedImage->GetDimensions(); //dimensions of the image int line = dims[0]; //how many pixels per line? int x = xMin; //pixel index x int y = yMin; //pixel index y char* currentPixel; //get the depth for each contour float depth = CalculateLayerDepth(renderer); vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); //the points to draw vtkSmartPointer<vtkCellArray> lines = vtkSmartPointer<vtkCellArray>::New(); //the lines to connect the points // We take the pointer to the first pixel of the image currentPixel = static_cast<char*>(localStorage->m_ReslicedImage->GetScalarPointer() ); while (y <= yMax) { //if the current pixel value is set to something if ((currentPixel) && (*currentPixel != 0)) { //check in which direction a line is necessary //a line is added if the neighbor of the current pixel has the value 0 //and if the pixel is located at the edge of the image //if vvvvv not the first line vvvvv if (y > yMin && *(currentPixel-line) == 0) { //x direction - bottom edge of the pixel //add the 2 points vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); //add the line between both points lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv not the last line vvvvv if (y < yMax && *(currentPixel+line) == 0) { //x direction - top edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv not the first pixel vvvvv if ( (x > xMin || y > yMin) && *(currentPixel-1) == 0) { //y direction - left edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv not the last pixel vvvvv if ( (y < yMax || (x < xMax) ) && *(currentPixel+1) == 0) { //y direction - right edge of the pixel vtkIdType p1 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } /* now consider pixels at the edge of the image */ //if vvvvv left edge of image vvvvv if (x == xMin) { //draw left edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv right edge of image vvvvv if (x == xMax) { //draw right edge of the pixel vtkIdType p1 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv bottom edge of image vvvvv if (y == yMin) { //draw bottom edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } //if vvvvv top edge of image vvvvv if (y == yMax) { //draw top edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); } }//end if currentpixel is set x++; if (x > xMax) { //reached end of line x = xMin; y++; } // Increase the pointer-position to the next pixel. // This is safe, as the while-loop and the x-reset logic above makes // sure we do not exceed the bounds of the image currentPixel++; }//end of while // Create a polydata to store everything in vtkSmartPointer<vtkPolyData> polyData = vtkSmartPointer<vtkPolyData>::New(); // Add the points to the dataset polyData->SetPoints(points); // Add the lines to the dataset polyData->SetLines(lines); return polyData; }
void mitk::DoseImageVtkMapper2D::CreateLevelOutline(mitk::BaseRenderer* renderer, const mitk::IsoDoseLevel* level, float pref, vtkSmartPointer<vtkPoints> points, vtkSmartPointer<vtkCellArray> lines, vtkSmartPointer<vtkUnsignedCharArray> colors) { LocalStorage* localStorage = this->GetLocalStorage(renderer); //get the min and max index values of each direction int* extent = localStorage->m_ReslicedImage->GetExtent(); int xMin = extent[0]; int xMax = extent[1]; int yMin = extent[2]; int yMax = extent[3]; int* dims = localStorage->m_ReslicedImage->GetDimensions(); //dimensions of the image int line = dims[0]; //how many pixels per line? //get the depth for each contour float depth = CalculateLayerDepth(renderer); double doseValue = level->GetDoseValue()*pref; mitk::IsoDoseLevel::ColorType isoColor = level->GetColor(); unsigned char colorLine[3] = {static_cast<unsigned char>(isoColor.GetRed()*255), static_cast<unsigned char>(isoColor.GetGreen()*255), static_cast<unsigned char>(isoColor.GetBlue()*255)}; int x = xMin; //pixel index x int y = yMin; //pixel index y float* currentPixel; // We take the pointer to the first pixel of the image currentPixel = static_cast<float*>(localStorage->m_ReslicedImage->GetScalarPointer() ); while (y <= yMax) { //if the current pixel value is set to something if ((currentPixel) && (*currentPixel >= doseValue)) { //check in which direction a line is necessary //a line is added if the neighbor of the current pixel has the value 0 //and if the pixel is located at the edge of the image //if vvvvv not the first line vvvvv if (y > yMin && *(currentPixel-line) < doseValue) { //x direction - bottom edge of the pixel //add the 2 points vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); //add the line between both points lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv not the last line vvvvv if (y < yMax && *(currentPixel+line) < doseValue) { //x direction - top edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv not the first pixel vvvvv if ( (x > xMin || y > yMin) && *(currentPixel-1) < doseValue) { //y direction - left edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv not the last pixel vvvvv if ( (y < yMax || (x < xMax) ) && *(currentPixel+1) < doseValue) { //y direction - right edge of the pixel vtkIdType p1 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } /* now consider pixels at the edge of the image */ //if vvvvv left edge of image vvvvv if (x == xMin) { //draw left edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv right edge of image vvvvv if (x == xMax) { //draw right edge of the pixel vtkIdType p1 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv bottom edge of image vvvvv if (y == yMin) { //draw bottom edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], y*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } //if vvvvv top edge of image vvvvv if (y == yMax) { //draw top edge of the pixel vtkIdType p1 = points->InsertNextPoint(x*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); vtkIdType p2 = points->InsertNextPoint((x+1)*localStorage->m_mmPerPixel[0], (y+1)*localStorage->m_mmPerPixel[1], depth); lines->InsertNextCell(2); lines->InsertCellPoint(p1); lines->InsertCellPoint(p2); colors->InsertNextTupleValue(colorLine); } }//end if currentpixel is set x++; if (x > xMax) { //reached end of line x = xMin; y++; } // Increase the pointer-position to the next pixel. // This is safe, as the while-loop and the x-reset logic above makes // sure we do not exceed the bounds of the image currentPixel++; }//end of while }