Difference between revisions of "Points Workbench/zh"

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The Points module is made to give you specific tools for working with [http://en.wikipedia.org/wiki/Point_cloud point clouds]. It is still in development.
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[[Image:PointsWorkbench.svg|64px]]
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== Introduction ==
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The [[Points Workbench]] is intended to give you specific tools for working with [http://en.wikipedia.org/wiki/Point_cloud point clouds]. The workbench is still in development.
  
These tools are already available:
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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. Then the cloud of points can 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 of parts.
  
* [[Image:Points_Import_Point_cloud.svg|32px]] [[Points ImportPoints|Import Point Cloud]]: will import coordinates for 3D-points from a text file
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== Tools ==
* [[Image:Points_Export_Point_cloud.svg|32px]] [[Points ExportPoints|Export Point Cloud]]: will export coordinates for 3D-points to a text file
 
* [[Image:PolygonPick.svg|32px]] Polygon Pick: to do
 
  
At the moment, the points cloud workbench has no automatic routines to deal with the imported points.<br />
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* [[Image:Points_Import_Point_cloud.svg|32px]] [[Points_Import|Import]]: imports a point cloud from a text file.
But linking against the points cloud library (the windows version of FreeCAD already has that capability) you could<br />
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* [[Image:Points_Export_Point_cloud.svg|32px]] [[Points_Export|Export]]: exports a point cloud to a text file.
use python commands to further process your data, see discusion [http://forum.freecadweb.org/viewtopic.php?f=13&t=15988 here] and [http://forum.freecadweb.org/viewtopic.php?f=13&t=16103 here] (german sub-form).<br />
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* [[Points_Transform|Transform]]: transforms a point cloud.
Another interesting discussion [http://forum.freecadweb.org/viewtopic.php?f=3&t=16098 here] (english Help-Forum).<br />
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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.
  
Of course you could also use the draft workbench within FreeCAD and connect the points using draft elements.<br />
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== Limitations ==
Using snap-mode "end-point" will ensure snapping to the points.
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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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See the discussions in the forum:
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* [http://forum.freecadweb.org/viewtopic.php?f=13&t=15988 Fläche aus Messwerten] (German)
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* [http://forum.freecadweb.org/viewtopic.php?f=13&t=16103 Schnitte durch Flächen aus Messwerten] (German)
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* [http://forum.freecadweb.org/viewtopic.php?f=3&t=16098 Inspecting Point cloud].
  
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It is also possible to use the tools from the [[Draft Workbench]] to connect the points using Draft objects such as [[Draft Line|Lines]] and [[Draft BSpline|Splines]]. Using the [[Draft Endpoint|Endpoint]] snapping method will ensure that the tools snap to the imported points.
  
[[Category:User Documentation/zh]]
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{{Docnav|Plot Workbench|Raytracing Workbench}}
  
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{{Points Tools navi}}
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{{Userdocnavi}}
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[[Category:Workbenches]]
 
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Revision as of 17:45, 26 December 2018

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PointsWorkbench.svg

Introduction

The Points Workbench is intended to give you 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. Then the cloud of points can 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 of parts.

Tools

  • Points Import Point cloud.svg Import: imports a point cloud from a text file.
  • Points Export Point cloud.svg Export: exports a point cloud to a text file.
  • Transform: transforms a point cloud.
  • Convert: converts to points.
  • PolygonPick.svg Polygon cut: cuts a point cloud with a picked polygon.
  • Merge: merge several point clouds into one.

Limitations

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.

See the discussions in the forum:

It is also possible to use the tools from the Draft Workbench to connect the points using Draft objects such as Lines and Splines. Using the Endpoint snapping method will ensure that the tools snap to the imported points.