geom/doc/salome/gui/GEOM/input/using_measurement_tools.doc

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\page using_measurement_tools_page Using measurement tools

\n Measurement tools in GEOM are necessary for getting different data
concerning created or imported geometrical objects. They are:

<ul>
<li>\ref point_coord_anchor "Point coordinates"</li>
<li>\ref basic_prop_anchor "Basic properties"</li>
<li>\ref center_mass_anchor "Center of mass"</li>
<li>\ref inertia_anchor "Inertia"</li>
<li>\ref bounding_box_anchor "Bounding box"</li>
<li>\ref min_distance_anchor "Min. distance"</li>
<li>\ref tolerance_anchor "Tolerance"</li>
<li>\ref whatis_anchor "WhatIs"</li>
<li>\ref check_anchor "Check"</li>
<li>\ref check_compound_anchor "Check compound of blocks"</li>
</ul>

\n Our <b>TUI Scripts</b> show how to use 
\ref tui_measurement_tools_page "Measurement Tools" with <b>TUI
commands</b>.

\n <em>To use measurement tools:</em> 
\par
In the <b>Main menu</b> select \b Measures submenu.

\anchor point_coord_anchor
<br><h2>Point coordinates</h2>

\n Returns the coordinates of a point.

\n <b>Result:</b> Point coordinates (X, Y, Z) in 3D space in the form of Python Tuple.
\n <b>TUI Command:</b> <em>geompy.PointCoordinates(Point),</em> 
where \em Point is a point whose coordinates are inquired.

\image html measures1.png

\anchor basic_prop_anchor
<br><h2>Basic properties</h2>

\n Returns the properties (Length, Surface & Volume) for the selected
geometrical object.

\n <b>Result:</b> Display Length, Surface & Volume in the form of
Python Tuple.
\n <b>TUI Command:</b> <em>geompy.BasicProperties(Shape),</em> where
\em Shape is a shape whose properties are inquired.

\image html neo-basicprop.png

\anchor center_mass_anchor
<br><h2>Center of mass</h2>

\n Calculates and returns the coordinates of the gravity center for
the selected geometrical object.

\n <b>Result:</b> GEOM_Object (vertex).
\n <b>TUI Command:</b> <em> geompy.MakeCDG(Shape),</em> where \em Shape is
the shape for which a center of gravity is computed.

\image html measures3.png

\anchor inertia_anchor
<br><h2>Inertia</h2>

Returns the axis of inertia for the selected geometrical object.

\n <b>Result:</b> Displays the matrix and moments of inertia in the
form of Python Tuple <center>(I11, I12, I13,</center>
                     <center>I21, I22, I23,</center>
                     <center>I31, I32, I33,</center>
                     <center>Ix, Iy, Iz).</center>
\n <b>TUI Command:</b> <em>geompy.Inertia(Shape),</em> where \em Shape is
a shape for which a matrix of inertia and moment of inertia are
returned.

\image html measures4.png

\anchor bounding_box_anchor
<br><h2>Bounding box</h2>

\n Returns the dimensions of the bounding box for the selected
geometrical object.

\n <b>Result:</b> Displays the dimensions of the bounding box of a
geometrical object in the form of Python Tuple (Xmin, Xmax, Ymin,
Ymax, Zmin, Zmax).
\n <b>TUI Command:</b> <em>geompy.BoundingBox(Shape),</em> where \em Shape
is a shape for which a bounding box is computed.

\image html measures5.png

\anchor min_distance_anchor
<br><h2>Min. distance</h2>

\n Returns the minimum distance between two geometrical objects.

\n <b>TUI Command:</b> <em>geompy.MinDistance(Shape1, Shape2),</em>
where \em Shape1 and \em Shape2 are shapes between which the minimal distance
computed.

\image html distance.png

\anchor tolerance_anchor
<br><h2>Tolerance</h2>

\n Returns the maximum and the minimum tolerance for the selected
geometrical object.

\n <b>Result:</b> Displays the tolerance values (FaceMinTol,
FaceMaxTol, EgdeMinTol, EgdeMaxTol, VertexMinTol, VertexMaxTol).
\n <b>TUI Command:</b> <em>geompy.Tolerance(Shape),</em> where \em Shape
is a shape for which minimal and maximal tolerances are returned.

\image html new-tolerance.png

\anchor whatis_anchor
<br><h2>WhatIs</h2>

\n Displays types and quantities of all elements composing the
selected geometrical object.

\n <b>TUI Command:</b> <em>geompy.WhatIs(Shape),</em> where \em Shape is a
shape from which a description is returned.

\image html measures8.png

\anchor check_anchor
<br><h2>Check</h2>

\n Checks the topology of the selected geometrical object and returns
True if it is valid. Check also geometry checkbox allows to test the
geometry as well.

\n <b>Result:</b> Boolean.
\n <b>TUI Command:</b> <em>geompy.(theShape, theIsCheckGeom = 0),</em>
where is shape which is checked for validity.

\image html measures9.png

\anchor check_compound_anchor
<br><h2>Check compound of blocks</h2>

\n Checks whether a shape is a compound of glued blocks. To be
considered as a compound of blocks, the given shape must satisfy the
following conditions:
<ul>
<li>Each element of the compound should be a Block (6 faces and 12 edges);</li>
<li>A connection between two Blocks should be an entire quadrangle face or an entire edge;</li>
<li>The compound should be connected;</li>
<li>Two quadrangle faces should be glued.</li>
</ul>

\n Informs of the following possible errors:
<ul>
<li>not a block;</li>
<li>not glued;</li>
<li>not connected;</li>
<li>extra or degenerated edge.</li>
</ul>

\n <b>Result:</b> Boolean; highlight in the viewer.
\n <b>TUI Command:</b>
<em>geompy.CheckCompoundOfBlocks(Compound).</em> Checks if the shape
is a valid compound of blocks. If it is true, then the validity flag
is returned, and encountered errors are printed in the python console.

\image html measures10.png

*/