Function volume

Web/Python/vtkmodules/web/utils.py:183–211

Expect a vtkImageData and extract its setting for the dash_vtk.Volume state

(dataset)

def volume(dataset):
    """Expect a vtkImageData and extract its setting for the dash_vtk.Volume state"""
    if dataset is None or not dataset.IsA("vtkImageData"):
        return None

    state = {
        "image": {
            "dimensions": dataset.GetDimensions(),
            "spacing": dataset.GetSpacing(),
            "origin": dataset.GetOrigin(),
        },
    }

    # Capture image orientation if any
    if hasattr(dataset, "GetDirectionMatrix"):
        matrix = dataset.GetDirectionMatrix()
        js_mat = []
        for j in range(3):
            for i in range(3):
                js_mat.append(matrix.GetElement(i, j))

        state["image"]["direction"] = js_mat

    scalars = dataset.GetPointData().GetScalars()
    field = data_array(scalars, location="PointData")
    if field:
        state["field"] = field

    return state