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89 <h1>Segmentation</h1>
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91 <p><span style="font-weight: bold;"><B><img src="i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> Segmentation</B></span> is
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92 a functionality similar to <span style="font-weight: bold;"><B>Clipping</B></span>
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93 in <span style="font-weight: bold;"><B>Mesh</B></span> and <span style="font-weight: bold;"><B>Geom</B></span>
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96 <p><span style="font-weight: bold;"><B>Segmentation</B></span> can be activated
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97 by clicking <img src="image35.gif" width="27px" height="27px" border="0" class="img_whs2"> (<span style="font-weight: bold;"><B>Plane Segmentation</B></span>)
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98 or<img src="image38.gif" width="28px" height="29px" border="0" class="img_whs3"> (<span style="font-weight: bold;"><B>Sphere Segmentation</B></span>)
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99 button in the Gauss Viewer toolbar. </p>
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101 <p>Once the command is activated, a new window, below the main 3D view
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102 is created to display the content of the segmentation cursor. A dialog
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103 box is also displayed to manually configure the segmentation cursor parameters.</p>
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105 <p>The <span style="font-weight: bold;"><B>Main view</B></span> (top) shows the
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106 results at Gauss points with scalar bars. A semi-transparent <span style="font-weight: bold;"><B>Segmentation
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107 Cursor</B></span> defines the part of the variables to be inspected. Two
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108 different presentations for Gauss points are used, depending on location
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109 of the points: <span style="font-weight: bold;"><B>Inside</B></span> or <span
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110 style="font-weight: bold;"><B>Outside</B></span> the segmentation cursor. </p>
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112 <p>The <span style="font-weight: bold;"><B>Secondary view</B></span> (bottom)
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113 is also called <span style="font-weight: bold;"><B>Segmentation Viewer</B></span>.
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114 It shows, in real time, the results at Gauss points only (no mesh elements)
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115 that are located inside the segmentation cursor. Gauss points are displayed
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116 in the same way as <span style="font-weight: bold;"><B>Inside</B></span> points
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117 in the first view. This view is automatically updated when the cursor
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118 is changed in the first view.</p>
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120 <p><span style="font-weight: bold;"><B>Gauss Points</B></span> tab of the Segmentation
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121 menu allows to define visualization parameters for Inside and Outside
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122 cursor Gauss Points. See
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123 <span style="font-weight: bold;"><B><a href="primitive_types.htm">Primitives</a></B></span>
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124 and <span style="font-weight: bold;"><B><a href="types_of_gauss_points_presentations.htm">Presentations</a></B></span>
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125 to learn about parameters definable in this tab. </p>
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129 <p class="whs4"><img src="pics/planes.png" x-maintain-ratio="TRUE" width="637px" height="545px" border="0" class="img_whs5"></p>
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133 <p><span style="font-weight: bold;"><B>Plane segmentation</B></span> is
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134 characteristic for its Segmentation Cursor in the form of a box with an
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135 axis to define its orientation and two planes defining its upper and lower
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138 <p>It can be defined in Segmentation Cursor tab, which allows to define
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139 coordinates of origin, direction and depth of the segmentation plane.
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144 <p class="whs6"><img src="pics/image74.gif" x-maintain-ratio="TRUE" width="283px" height="177px" border="0" class="img_whs7"></p>
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148 <p class="whs4"><img src="image37.jpg" width="450px" height="264px" border="0" class="img_whs8"></p>
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152 <p>Actually it is also possible to edit these parameters directly with
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153 the mouse in the main 3D view :</p>
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155 <p>
\95 Translation (dragging) of the lower plane along the V axis changes
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156 the <span style="font-weight: bold;"><B>Origin</B></span> of the cursor</p>
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158 <p>
\95 Rotating the V axis around its origin defines a new <span style="font-weight: bold;"><B>Direction</B></span>
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161 <p>
\95 Dragging the upper plane along its axis changes the <span style="font-weight: bold;"><B>Depth</B></span>
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162 of the cursor. It is not possible to move the lower above the upper plane
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163 (minimum depth is 0).</p>
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167 <p class="whs4"><img src="pics/spheroid.png" x-maintain-ratio="TRUE" width="636px" height="552px" border="0" class="img_whs9"></p>
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171 <p><span style="font-weight: bold;"><B>Sphere segmentation</B></span> is
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172 characteristic for its Segmentation Cursor in the form of a sphere with
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173 an axis to define its orientation. </p>
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175 <p>It can be defined in Segmentation Cursor tab, which allows to define
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176 coordinates of origin, and radius of the segmentation plane.</p>
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180 <p class="whs10"><img src="pics/image117.gif" x-maintain-ratio="TRUE" width="154px" height="173px" border="0" class="img_whs11"></p>
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184 <p class="whs4"><img src="image38.jpg" width="449px" height="215px" border="0" class="img_whs12"></p>
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188 <p>The <span style="font-weight: bold;"><B>Origin</B></span> can also be changed
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189 in the 3D Viewer by dragging the Sphere with the mouse . </p>
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193 <p>When the user exits the <span style="font-weight: bold;"><B>Segmentation</B></span>
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194 menu, the function is ended and the second view (segmentation cursor viewer)
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205 <p> </p>
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