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CAE Tutorial: Setting Advanced Interpolation

HOOPS/MVO includes a utility function called HUtilityGeometryCreation::GenerateFEAShell which can be used to calculate more advanced color interpolation. It operates on a shell which already has color map values at the vertices, and recalculates a new shell that has quad based color interpolation calculated for all the 'quads' in the original shell. New points are introduced into the original shells 'quad' faces.

Let's add a new method to the tutorial which obtains the first shell in the selection list, calculates the advanced interpolation variant, and then deletes the original shell. We'd hook this up to a new GUI menu button.

int HAnalysisView::DisplayQuadInterpolate()
{
HAnalysisSelectionSet * selection = (HAnalysisSelectionSet*)GetSelection();
if (selection->GetSize() == 0)
return EXIT_FAILURE ;
if(selection->GetSize() > 0)
{
HC_KEY key = selection->GetAt(0);
// DeSelect the item first
selection->DeSelectAll();
// open the shell's containing segment
HC_Open_Segment_By_Key(HC_KShow_Owner_By_Key(key));
HC_KEY new_key = HUtilityGeometryCreation::GenerateFEAShell(key, false, "bilinear");
HC_Close_Segment();
// delete the original shell
HC_Delete_By_Key(key);
SetColorIndexInterpolation(true, false);
SetColorInterpolation(false);
Update();
}
return EXIT_SUCCESS ;
}

Experiment by reading in the sample meshed_car1.hsf dataset, selecting it, applying contours, and then performing the advanced interpolation.