Points Workbench/zh: Difference between revisions
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[[Image:Workbench_Points.svg|thumb|128px|Points workbench icon]] |
[[Image:Workbench_Points.svg|thumb|128px|Points workbench icon]] |
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==Introduction== |
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{{TOCright}} |
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The [[Image:Workbench_Points.svg|24px]] [[Points Workbench|Points Workbench]] |
The [[Image:Workbench_Points.svg|24px]] [[Points Workbench|Points Workbench]] offers specific tools for working with [http://en.wikipedia.org/wiki/Point_cloud point clouds]. The workbench is still in development. |
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A point cloud is a collection of points in 3D space. A point cloud is generally produced by scanning the surface of a solid object. |
A point cloud is a collection of points in 3D space. A point cloud is generally produced by scanning the surface of a solid object. The cloud of points can then be used for many purposes including building a mesh for the object, reconstructing the surfaces and solid volumes, reverse engineering, as well as for visualization and quality inspection. |
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== |
==Tools== |
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All Points Workbench tools can be accessed from the '''Points''' menu. Some tools are also available in the '''Points tools''' toolbar. |
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* [[Points_Transform|Transform]]: transforms a point cloud. |
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* [[Points_Convert|Convert]]: converts to points. |
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* [[Image:PolygonPick.svg|32px]] [[Points PolyCut|Polygon cut]]: cuts a point cloud with a picked polygon. |
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* [[Points Merge|Merge]]: merge several point clouds into one. |
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* [[Points_Convert|Convert to points...]]: Creates point clouds from shape objects. |
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* [[Points_Structure|Structured point cloud]]: Creates a sorted point cloud from the points of an existing point cloud. |
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It is also possible to use the tools from the [[Image:Workbench_Draft.svg|24px]] [[Draft Workbench|Draft Workbench]] to connect the points using Draft objects such as [[Image:Draft_Line.svg|24px]] [[Draft Line|Lines]] and [[Image:Draft_BSpline.svg|24px]] [[Draft BSpline|Splines]]. Using the [[Image:Snap_Endpoint.svg|24px]] [[Draft Endpoint|Endpoint]] snapping method will ensure that the tools snap to the imported points. |
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== Limitations == |
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At the moment the workbench has no automatic routines to deal with the imported points, but the user can use [[Python]] scripting to programmatically process the data. |
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* [[Image:Points_PolyCut.svg|32px]] [[Points_PolyCut|Cut point cloud]]: Cuts points from point clouds. |
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* [[Points Merge|Merge point clouds]]: Creates a point cloud by combining the points of two or more point clouds. |
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* [[Draft_Module|Draft]] commands such as [[Image:Draft_Line.svg|24px]] [[Draft_Line|Draft Line]] and [[Image:Draft_BSpline.svg|24px]] [[Draft_BSpline|Draft BSpline]] can be used to connect the points in a point cloud. Use [[Image:Draft_Endpoint.svg|24px]] [[Draft_Endpoint|Draft Endpoint]] to snap to the points. |
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See the discussions in the forum: |
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* [[Python]] can be used to analyze and process point clouds. See the following forum discussions: |
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* [http://forum.freecadweb.org/viewtopic.php?f= |
** [http://forum.freecadweb.org/viewtopic.php?f=3&t=16098 Inspecting Point cloud]. |
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* [http://forum.freecadweb.org/viewtopic.php?f= |
** [http://forum.freecadweb.org/viewtopic.php?f=13&t=15988 Fläche aus Messwerten] (German) |
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Revision as of 19:14, 23 August 2020
Introduction
The Points Workbench offers specific tools for working with point clouds. The workbench is still in development.
A point cloud is a collection of points in 3D space. A point cloud is generally produced by scanning the surface of a solid object. The cloud of points can then be used for many purposes including building a mesh for the object, reconstructing the surfaces and solid volumes, reverse engineering, as well as for visualization and quality inspection.
Tools
All Points Workbench tools can be accessed from the Points menu. Some tools are also available in the Points tools toolbar.
- Convert to points...: Creates point clouds from shape objects.
- Structured point cloud: Creates a sorted point cloud from the points of an existing point cloud.
- Import points...: Imports a point cloud from a file.
- Export points...: Exports a point cloud to a file.
- Cut point cloud: Cuts points from point clouds.
- Merge point clouds: Creates a point cloud by combining the points of two or more point clouds.
Notes
- Draft commands such as Draft Line and Draft BSpline can be used to connect the points in a point cloud. Use Draft Endpoint to snap to the points.
- Python can be used to analyze and process point clouds. See the following forum discussions:
- Inspecting Point cloud.
- Fläche aus Messwerten (German)
- Schnitte durch Flächen aus Messwerten (German)
User documentation
- Getting started
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