Shadow Line Modification

This tool allows to modify the contour of the line separating "night and day" with the result of the new surface. Here is the detailed process.

Selection of the surface to modify, the menu of the SLM requests a point on the surface and a light direction, all can be entered by mouse watching the shadow lines in real time.

 Then we select one line and the modification method. 

When the line modification is finished the evaluation process starts and the solution is applied if the results are satisfactory.

 
And the resulting surface ...

where the orange lines are the originals and the blue the new ones.

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