select_points_object_model_3dT_select_points_object_model_3dSelectPointsObjectModel3dSelectPointsObjectModel3d (Operator)

Name

select_points_object_model_3dT_select_points_object_model_3dSelectPointsObjectModel3dSelectPointsObjectModel3d — Apply a threshold to an attribute of 3D object models.

Signature

select_points_object_model_3d( : : ObjectModel3D, Attrib, MinValue, MaxValue : ObjectModel3DThresholded)

Herror T_select_points_object_model_3d(const Htuple ObjectModel3D, const Htuple Attrib, const Htuple MinValue, const Htuple MaxValue, Htuple* ObjectModel3DThresholded)

void SelectPointsObjectModel3d(const HTuple& ObjectModel3D, const HTuple& Attrib, const HTuple& MinValue, const HTuple& MaxValue, HTuple* ObjectModel3DThresholded)

static HObjectModel3DArray HObjectModel3D::SelectPointsObjectModel3d(const HObjectModel3DArray& ObjectModel3D, const HTuple& Attrib, const HTuple& MinValue, const HTuple& MaxValue)

HObjectModel3D HObjectModel3D::SelectPointsObjectModel3d(const HString& Attrib, double MinValue, double MaxValue) const

HObjectModel3D HObjectModel3D::SelectPointsObjectModel3d(const char* Attrib, double MinValue, double MaxValue) const

HObjectModel3D HObjectModel3D::SelectPointsObjectModel3d(const wchar_t* Attrib, double MinValue, double MaxValue) const   (Windows only)

static void HOperatorSet.SelectPointsObjectModel3d(HTuple objectModel3D, HTuple attrib, HTuple minValue, HTuple maxValue, out HTuple objectModel3DThresholded)

static HObjectModel3D[] HObjectModel3D.SelectPointsObjectModel3d(HObjectModel3D[] objectModel3D, HTuple attrib, HTuple minValue, HTuple maxValue)

HObjectModel3D HObjectModel3D.SelectPointsObjectModel3d(string attrib, double minValue, double maxValue)

Description

select_points_object_model_3dselect_points_object_model_3dSelectPointsObjectModel3dSelectPointsObjectModel3dSelectPointsObjectModel3d selects points of the 3D object model ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3D according to the attributes and thresholds passed in AttribAttribAttribAttribattrib, MinValueMinValueMinValueMinValueminValue, and MaxValueMaxValueMaxValueMaxValuemaxValue respectively. The selected points are returned in the 3D object model ObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedobjectModel3DThresholded. All attributes that are connected with the points (e.g., polygons or triangles) are adapted in such a way that there is no reference to the removed points left.

AttribAttribAttribAttribattrib can either contain a tuple of numbers that has the same length as ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3D has points, or a list of attribute names on which the thresholds are applied.

If AttribAttribAttribAttribattrib contains a tuple of numbers, exactly one number must be passed in both MinValueMinValueMinValueMinValueminValue and MaxValueMaxValueMaxValueMaxValuemaxValue. All points for which the corresponding entry in AttribAttribAttribAttribattrib is between the two thresholds are added to the output 3D object model ObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedobjectModel3DThresholded.

Otherwise, AttribAttribAttribAttribattrib can contain a list of attribute names that refer to properties of the 3D object model ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3D. All points, for which the value stored in the attribute AttribAttribAttribAttribattrib is inside the interval specified in MinValueMinValueMinValueMinValueminValue and MaxValueMaxValueMaxValueMaxValuemaxValue are stored in the output 3D object model. MinValueMinValueMinValueMinValueminValue and MaxValueMaxValueMaxValueMaxValuemaxValue must contain exactly as many values as AttribAttribAttribAttribattrib. If AttribAttribAttribAttribattrib contains multiple values, only those points are stored in the output 3D object model that fulfill all the criteria.

Depending on the properties of ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3D, the following values are possible for AttribAttribAttribAttribattrib:

The following attributes are available:

'point_coord_x'"point_coord_x""point_coord_x""point_coord_x""point_coord_x":

The x-coordinates of the set of 3D points.

'point_coord_y'"point_coord_y""point_coord_y""point_coord_y""point_coord_y":

The y-coordinates of the set of 3D points.

'point_coord_z'"point_coord_z""point_coord_z""point_coord_z""point_coord_z":

The z-coordinates of the set of 3D points.

'point_normal_x'"point_normal_x""point_normal_x""point_normal_x""point_normal_x":

The x-components of the 3D point normals of the set of 3D points.

'point_normal_y'"point_normal_y""point_normal_y""point_normal_y""point_normal_y":

The y-components of the 3D point normals of the set of 3D points.

'point_normal_z'"point_normal_z""point_normal_z""point_normal_z""point_normal_z":

The z-components of the 3D point normals of the set of 3D points.

'mapping_row'"mapping_row""mapping_row""mapping_row""mapping_row":

The row-components of the 2D mapping of the set of 3D points.

'mapping_col'"mapping_col""mapping_col""mapping_col""mapping_col":

The column-components of the 2D mapping of the set of 3D points.

'neighbor_distance'"neighbor_distance""neighbor_distance""neighbor_distance""neighbor_distance":
'neighbor_distance N'"neighbor_distance N""neighbor_distance N""neighbor_distance N""neighbor_distance N":

The distance of the N-th nearest point. N must be a positive integer and is by default 25. For every point, all other points are sorted according to their distance and the distance of the N-th point is used.

'num_neighbors X'"num_neighbors X""num_neighbors X""num_neighbors X""num_neighbors X":

The number of neighbors within a distance of at most X. It can be used to remove sparsely populated parts of the 3D object model, such as outliers or points that are created by smoothing between 3D surfaces.

'num_neighbors_fast X'"num_neighbors_fast X""num_neighbors_fast X""num_neighbors_fast X""num_neighbors_fast X":

The approximate number of neighbors within a distance of at most X. The distances are approximated using voxels, leading to a faster processing compared to 'num_neighbors'"num_neighbors""num_neighbors""num_neighbors""num_neighbors".

Extended attribute:

Enter the name of an extended attribute of the type 'vertices'"vertices""vertices""vertices""vertices" and the selection will be applied based on the values of the extended attribute.

Execution Information

Parameters

ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3D (input_control)  object_model_3d(-array) HObjectModel3D, HTupleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Handle of the 3D object models.

AttribAttribAttribAttribattrib (input_control)  string(-array) HTupleHTupleHtuple (string) (string) (HString) (char*)

Attributes the threshold is applied to.

Default value: 'point_coord_z' "point_coord_z" "point_coord_z" "point_coord_z" "point_coord_z"

List of values: 'mapping_col'"mapping_col""mapping_col""mapping_col""mapping_col", 'mapping_row'"mapping_row""mapping_row""mapping_row""mapping_row", 'neighbor_distance'"neighbor_distance""neighbor_distance""neighbor_distance""neighbor_distance", 'num_neighbors'"num_neighbors""num_neighbors""num_neighbors""num_neighbors", 'num_neighbors_fast'"num_neighbors_fast""num_neighbors_fast""num_neighbors_fast""num_neighbors_fast", 'point_coord_x'"point_coord_x""point_coord_x""point_coord_x""point_coord_x", 'point_coord_y'"point_coord_y""point_coord_y""point_coord_y""point_coord_y", 'point_coord_z'"point_coord_z""point_coord_z""point_coord_z""point_coord_z", 'point_normal_x'"point_normal_x""point_normal_x""point_normal_x""point_normal_x", 'point_normal_y'"point_normal_y""point_normal_y""point_normal_y""point_normal_y", 'point_normal_z'"point_normal_z""point_normal_z""point_normal_z""point_normal_z"

MinValueMinValueMinValueMinValueminValue (input_control)  number(-array) HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Minimum value for the attributes specified by AttribAttribAttribAttribattrib.

Default value: 0.5

MaxValueMaxValueMaxValueMaxValuemaxValue (input_control)  number(-array) HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Maximum value for the attributes specified by AttribAttribAttribAttribattrib.

Default value: 1.0

ObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedObjectModel3DThresholdedobjectModel3DThresholded (output_control)  object_model_3d(-array) HObjectModel3D, HTupleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Handle of the reduced 3D object models.

Example (HDevelop)

gen_object_model_3d_from_points (rand(100), rand(100),\
                                    rand(100), ObjectModel3D)
select_points_object_model_3d (ObjectModel3D, 'point_coord_z',\
                               0.5, 1, ObjectModel3DThresholded)
get_object_model_3d_params (ObjectModel3DThresholded, 'num_points',\
                            NumPoints)

Result

select_points_object_model_3dselect_points_object_model_3dSelectPointsObjectModel3dSelectPointsObjectModel3dSelectPointsObjectModel3d returns 2 (H_MSG_TRUE) if all parameters are correct. If necessary, an exception is raised. If the required points are missing in the object model, i.e., an empty object model is passed, the error 9515 is raised.

Possible Predecessors

read_object_model_3dread_object_model_3dReadObjectModel3dReadObjectModel3dReadObjectModel3d, xyz_to_object_model_3dxyz_to_object_model_3dXyzToObjectModel3dXyzToObjectModel3dXyzToObjectModel3d

Possible Successors

connection_object_model_3dconnection_object_model_3dConnectionObjectModel3dConnectionObjectModel3dConnectionObjectModel3d, project_object_model_3dproject_object_model_3dProjectObjectModel3dProjectObjectModel3dProjectObjectModel3d, object_model_3d_to_xyzobject_model_3d_to_xyzObjectModel3dToXyzObjectModel3dToXyzObjectModel3dToXyz

See also

connection_object_model_3dconnection_object_model_3dConnectionObjectModel3dConnectionObjectModel3dConnectionObjectModel3d, reduce_object_model_3d_by_viewreduce_object_model_3d_by_viewReduceObjectModel3dByViewReduceObjectModel3dByViewReduceObjectModel3dByView

Module

3D Metrology