<div>Dear All,</div>
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<div>i have a problem on obtaining angles on a 3D surface. what i want to do is to randomly pick up 3 points on an isosurface and evaluate</div>
<div>the degree of the angle formed by these three points.</div>
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<div>i checked the AngleWidget.tcl but it is a 2D examples.</div>
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<div>i tried to use</div>
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<div>vtkAngleRepresentation3D </div>
<div>vtkAngleWidget </div>
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<div> the three points do not seem to "stick" on the surface but somewhere else.</div>
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<div>can someone enlighten me on how to create an arbitrary angle on an isosurface.</div>
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<div><br clear="all">thank you</div>
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<div>regards</div>
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<div>O.S</div>