I have a question regarding preview geometries, i.e. those that can be drawn with
Just as an example let’s consider that I have a curve and I want to display in the viewport some values and/or some symbols on this curve at certain positions. The computation of positions and the retrieve of values it is computationally expensive and I would like to cache the result to avoid to recompute every time that I pan, rotate or zoom in the viewport and let the computation run again just if the curve has changed.
The question are:
- If I have a Grasshopper document, whenever I move in the viewport , e.g. zooming out, every component’s parameters that inherit from
IGH_PreviewObjectdrawn again them self with
void DrawViewportWires(IGH_PreviewArgs args); void DrawViewportMeshes(IGH_PreviewArgs args);
or there is some caching mechanism to avoid to compute everything if nothing has changed?
- Which could be the best place where to cache results?