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-<h1>Warping</h1>
-
-<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>Warping</B></span> 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:</p>
-
-<p class="whs2">1. bisecting the four element edges, </p>
-
-<p class="whs2">2. 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. </p>
-
-<p class="whs3">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 \93h\94 from the
- plane. The length of each half edge is measured and the shortest length
- is assigned \93l\94. The warp angle is the arcsine of the ratio of the projection
- height \93h\94 to the half edge length \93l\94. </p>
-
-<p> </p>
-
-<p class="whs2"><img src="../image24.gif" width="496px" height="336px" border="0" class="img_whs4"></p>
-
-<p class="whs2"> </p>
-
-<p class=TODO> </p>
-
-<p class=TODO>To apply the Warping quality criterion to your mesh:</p>
-
-<p class=TODO> </p>
-
-<p class="whs2">1. Display your mesh in the viewer.</p>
-
-<p class="whs2"> </p>
-
-<p class="whs2">2. Choose <span style="font-weight: bold;"><B>Controls
- > Warp </B></span>or click <img src="../image39.gif" width="23px" height="23px" border="0" class="img_whs5"> button of the toolbar. Your mesh
- will be displayed in the viewer with its elements colored according to
- the applied mesh quality control criterion:</p>
-
-<p class="whs2"> </p>
-
-<p class="whs2"><img src="../image97.jpg" width="405px" height="308px" border="0" class="img_whs6"></p>
-
-<p class="whs2"> </p>
-
-<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
- a sample TUI Script of a <a href="../quality_controls.htm#bookmark10">Warping
- quality control</a> operation. </p>
-
-<p> </p>
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