mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-11-13 17:18:35 +05:00
46 lines
1.4 KiB
ReStructuredText
46 lines
1.4 KiB
ReStructuredText
.. _warping_page:
|
|
|
|
*******
|
|
Warping
|
|
*******
|
|
|
|
.. image:: ../images/image24.gif
|
|
:align: center
|
|
|
|
**Warping** indicates that a face is not planar and is applied only to
|
|
2D elements with 4 nodes. This quality control criterion is based on a
|
|
projection plane created by:
|
|
|
|
#. bisecting the four element edges,
|
|
#. creating a point on the plane at the vector average of the corners, where the x-axis extends from the point to the bisector on edge 2.
|
|
|
|
The plane normal is in the direction of the cross product of the
|
|
x-axis and the vector from the origin to the bisector of edge 3. Every
|
|
corner of the quad will then be a distance *h* from the plane. The
|
|
length of each half edge is measured and the shortest length is
|
|
assigned *l*. The warp angle is the arcsine of the ratio of the
|
|
projection height *h* to the half edge length *l*.
|
|
|
|
**To apply the Warping quality criterion to your mesh:**
|
|
|
|
#. Display your mesh in the viewer.
|
|
|
|
#. Choose **Controls > Face Controls > Warping Angle** or click **"Warping angle"** button of the toolbar.
|
|
|
|
.. image:: ../images/image39.png
|
|
:align: center
|
|
|
|
.. centered::
|
|
**"Warping angle" button**
|
|
|
|
Your mesh will be displayed in the viewer with its elements colored according to the applied mesh quality control criterion:
|
|
|
|
.. image:: ../images/image97.jpg
|
|
:align: center
|
|
|
|
|
|
**See Also** a sample TUI Script of a
|
|
:ref:`tui_warping` operation.
|
|
|
|
|