60000066 GroundSurface wishes

Summary

GroundSurface wishes: 1. Calculate the section of vdGroundSurface triangles with a plane 2.Intersection of a triangle with a vector line 3.Intersection of a triangle with a plane.  

Solution

In 6004 new methods added:

gTriangle methods:
    GetPlane            (Calculates the plane geometry of the triagle.)
    IntersectWithPlane  (Checks if a triangle intersects with a plane)
    IntersectWithVector (Checks if a vector line intersects a plane)
    InterpolatePoint    (Calculates the projection of the passed 2d point to a plane.)
    IsPointInThis       (Checks if the given point is inside the triangle.)

vdGroundSurface methods:
    CalculateContours   (Calculate the section of the triangles with a plane)

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