algorithmic modeling for Rhino
update geometry via custom component c#
How can i update a geometry, whose reference points were transformed (moved) by a custom component using the timer object? I tried the following:
// registerinput
AddPointParameter("pntin", "pntin", "pntin", GH_ParamAccess.list);
AddGeometryParameter("geoin", "geoin", "geoin", GH_ParamAccess.tree);
// registeroutput
AddPointParameter("pntout", "pntout", "pntout", GH_ParamAccess.list);
AddGeometryParameter("geoout", "geoout", "geoout", GH_ParamAccess.tree);
// solveinstance (declaring)
List<Point3d> pnts = new List<Point3d>();
Grasshopper.Kernel.Data.GH_Structure<Grasshopper.Kernel.Types.IGH_GeometricGoo> geo;
// solveinstance (connecting)
if (!DA.GetDataList(0, pnts)) return;
if (!DA.GetDataTree(1, out geo)) return;
something in between (transform points)
// return
DA.SetDataList(0, pnts);
DA.SetDataTree(1, geo);
Result: Points are up to date, Geometry is unchanged.
The kangaroo physics engine does what i want, but how?
Markus
Views: 459
Replies to This Discussion
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Permalink Reply by David Rutten on
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What are the 'reference points' of a 'geometry'?
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David Rutten
david@mcneel.com
Poprad, Slovakia
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Permalink Reply by Markus Hagemann on
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2 points -> line (geometry object defined by points)
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Something like this...
- Attachments:
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Unbenannt.PNG, 67 KB
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Permalink Reply by Vicente Soler on
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- Gets the start and end points of the line
- Compares them to the list of points that make the nodes of the simulation. Finds the coincident points and remembers its indices
- Runs simulation, nodes change position
- Creates new line using the previously stored index numbers and the new position of the nodes
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