/// <summary> /// Calculates the area of an object /// </summary> public static double GetArea(IRhinoObject obj, double tol) { if (null != obj) { IOnCurve crv = OnCurve.ConstCast(obj.Geometry()); if (null != crv) { return(GetCurveArea(crv, tol)); } IOnSurface srf = OnSurface.ConstCast(obj.Geometry()); if (null != srf) { return(GetSurfaceArea(srf)); } IOnBrep brep = OnBrep.ConstCast(obj.Geometry()); if (null != brep) { return(GetBrepArea(brep)); } IOnMesh mesh = OnMesh.ConstCast(obj.Geometry()); if (null != mesh) { return(GetMeshArea(mesh)); } } return(0.0); }
///<summary> This gets called when when the user runs this command.</summary> public override IRhinoCommand.result RunCommand(IRhinoCommandContext context) { MRhinoGetObject go = new MRhinoGetObject(); go.SetCommandPrompt("Select solid meshes for volume calculation"); go.SetGeometryFilter(IRhinoGetObject.GEOMETRY_TYPE_FILTER.mesh_object); go.SetGeometryAttributeFilter(IRhinoGetObject.GEOMETRY_ATTRIBUTE_FILTER.closed_mesh); go.EnableSubObjectSelect(false); go.EnableGroupSelect(); go.GetObjects(1, 0); if (go.CommandResult() != IRhinoCommand.result.success) { return(go.CommandResult()); } List <IOnMesh> meshes = new List <IOnMesh>(); for (int i = 0; i < go.ObjectCount(); i++) { IOnMesh mesh = go.Object(i).Mesh(); if (mesh != null) { meshes.Add(mesh); } } if (meshes.Count == 0) { return(IRhinoCommand.result.nothing); } OnBoundingBox bbox = new OnBoundingBox(); for (int i = 0; i < meshes.Count; i++) { meshes[i].GetBoundingBox(ref bbox, 1); } On3dPoint base_point = bbox.Center(); double total_volume = 0.0; double total_error_estimate = 0.0; string msg; for (int i = 0; i < meshes.Count; i++) { double error_estimate = 0.0; double volume = meshes[i].Volume(base_point, ref error_estimate); msg = string.Format("Mesh {0} = {1:f} (+/- {2:f}\n", i, volume, error_estimate); RhUtil.RhinoApp().Print(msg); total_volume += volume; total_error_estimate += error_estimate; } msg = string.Format("Total volume = {0:f} (+/- {1:f})\n", total_volume, total_error_estimate); RhUtil.RhinoApp().Print(msg); return(IRhinoCommand.result.success); }
private static double GetMeshVolume(IOnMesh mesh) { double volume = 0.0; if (null != mesh) { OnMassProperties mp = new OnMassProperties(); if (mesh.VolumeMassProperties(ref mp, true)) { volume = Math.Abs(mp.Volume()); } } return(volume); }
private static double GetMeshArea(IOnMesh mesh) { double area = 0.0; if (null != mesh) { OnMassProperties mp = new OnMassProperties(); if (mesh.AreaMassProperties(ref mp, true)) { area = Math.Abs(mp.Area()); } } return(area); }
public override bool CustomGeometryFilter(IRhinoObject obj, IOnGeometry geo, OnCOMPONENT_INDEX ci) { if (geo != null) { IOnCurve crv = OnCurve.ConstCast(geo); if (crv != null) { if (crv.IsClosed() && crv.IsPlanar()) { return(true); } else { return(false); } } IOnBrep brep = OnBrep.ConstCast(geo); if (brep != null) { if (brep.m_F.Count() == 1) { return(true); } else { return(false); } } IOnSurface srf = OnSurface.ConstCast(geo); if (srf != null) { return(true); } IOnMesh mesh = OnMesh.ConstCast(geo); if (mesh != null) { return(true); } } return(false); }
/// <summary> /// Calculates the volume of an object /// </summary> public static double GetVolume(IRhinoObject obj) { if (null != obj && obj.IsSolid()) { IOnSurface srf = OnSurface.ConstCast(obj.Geometry()); if (null != srf) { return(GetSurfaceVolume(srf)); } IOnBrep brep = OnBrep.ConstCast(obj.Geometry()); if (null != brep) { return(GetBrepVolume(brep)); } IOnMesh mesh = OnMesh.ConstCast(obj.Geometry()); if (null != mesh) { return(GetMeshVolume(mesh)); } } return(0.0); }
private static double GetMeshVolume(IOnMesh mesh) { double volume = 0.0; if (null != mesh) { OnMassProperties mp = new OnMassProperties(); if (mesh.VolumeMassProperties(ref mp, true)) volume = Math.Abs(mp.Volume()); } return volume; }
private static double GetMeshArea(IOnMesh mesh) { double area = 0.0; if (null != mesh) { OnMassProperties mp = new OnMassProperties(); if (mesh.AreaMassProperties(ref mp, true)) area = Math.Abs(mp.Area()); } return area; }