D3PLOT 22.1

Custom Coarsening

Custom Coarsening

Use Coarsened Mesh determines the scale at which the transition between true and coarsened mesh takes place.
Never Means that the true mesh is used at all scales
If max elem size is < xxx pixels Not recommended, as it requires a knowledge of screen resolution.
If scale factor < fff This is the factor on the normal "auto-scaled" scale for this model. At factors higher than < fff >, i.e. when zoomed in, the original mesh will be used.
Unconditionally The coarsened mesh is used at all scale factors.

Use for LI, HI and Overlay determines whether or not the coarsened mesh lines are used for wireframe plots, and overlay on shaded and contoured plots.

Normally you should leave this box unchecked, as the coarse overlay is not representative of the true mesh, however it can be useful when tuning some of the other parameters.

Outward normal error, Edge straightness error and Max edge attributes.

Play with these at your peril! The default values usually work reasonably well, but they have been arrived at by trial and error over a wide range of models rather than by any scientific means. It is beyond the scope of this manual to explain the theory behind them.

State used for coarsening mesh determines which state is used when extracting the coarse "Patches". An example of using this is given below.

Normally this should be the last state, as this will usually have the greatest deformation and hence limit the elements that can be merged into patches. However if the last state is corrupt, or you are only displaying earlier states, you may get an improvement in both image quality and speed if you choose an earlier state.

Update Coarse mesh using parameters below . If you modify any of the detailed parameters the coarse mesh will not be recalculated, and the changes will not therefore take effect, until you press this button.