protected override void SolveInstance(IGH_DataAccess DA)
{
// 0.import data
Autodesk.Revit.DB.PointCloudInstance element = null;
double averageDistance = 0.01; int numPoints = 999999;
if (!DA.GetData("Revit Point Cloud Instance", ref element))
{
return;
}
if (!DA.GetData("averageDistance", ref averageDistance))
{
return;
}
if (!DA.GetData("numPoints", ref numPoints))
{
return;
}
// 1.Create selection filter
BoundingBoxXYZ boundingBox = element.get_BoundingBox(null);
List <Autodesk.Revit.DB.Plane> planes = new List <Autodesk.Revit.DB.Plane>();
// X boundaries
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(XYZ.BasisX, boundingBox.Min));
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(-XYZ.BasisX, boundingBox.Max));
// Y boundaries
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(XYZ.BasisY, boundingBox.Min));
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(-XYZ.BasisY, boundingBox.Max));
// Z boundaries
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(XYZ.BasisZ, boundingBox.Min));
planes.Add(Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(-XYZ.BasisZ, boundingBox.Max));
// Create filter
PointCloudFilter filter = PointCloudFilterFactory.CreateMultiPlaneFilter(planes);
// 2.Fetch point cloud
PointCollection cloudPoints = element.GetPoints(filter, averageDistance, numPoints);
PointCloud Rh_pointCloud = new PointCloud();
// 3.Convert CloudPoints to rhino point cloud
if (element.HasColor())
{
foreach (CloudPoint point in cloudPoints)
{
// Process each point
Point3d point3d = new Point3d(point.X * 1000, point.Y * 1000, point.Z * 1000);
byte[] bArray = BitConverter.GetBytes(point.Color);
var color = System.Drawing.Color.FromArgb(bArray[0], bArray[1], bArray[2]);
Rh_pointCloud.Add(point3d, color);
}
}
else
{
foreach (CloudPoint point in cloudPoints)
{
// Process each point
Point3d point3d = new Point3d(point.X * 1000, point.Y * 1000, point.Z * 1000);
Rh_pointCloud.Add(point3d);
}
}
// 4.Return Grasshopper Cloud
GH_Cloud GH_pointCloud = new GH_Cloud(Rh_pointCloud);
DA.SetData(0, GH_pointCloud);
}
