CashFlow, A Visualization Framework for 3D Flow - Studierstube ...

Implementation4.3. SoMultiDataNode– expensive to computeMost derived data are expensive to compute, like stream lines for instance,especially on curvilinear–linear and unstructured grids. The placement ofnew seed points using existing streamlines is one own field.– base for other algorithmsEspecially iso–surfaces can create new geometry as input for a large set ofalgorithms.• Render DataWhen dealing with huge data sets a lot of techniques are used to speed up rendering.– View frustum cullingIn large scenes only a small visible part is selected and rendered.– Portals and cellsScenes can sometimes be divided into cells connected by portals. Onlyvisible cells are rendered.– Level of Details (LOD)Objects can be rendered with different amount of details depending on theirsize in screen space and on the distance between the object and the camera.75