Hi Steve,
There is a method that will return the data point informations when a mouse is right over the data point but there is no method built-in that would return the nearest point to a mouse click.
On the other hand, it is certainly possible through programming to determine what is the nearest data point when you click the mouse button. Suppose you have 5 points in a 3D space, P(1)=[1,1,1], P(2)=[2,2,2], ....., P(5)=[5,5,5]. If you click your mouse on some plane, and that coordinate is P(M)=[2,3,4], you just have to scan through all the points P(n) and compute the Distance(n) = SquareRoot((P(M)[ X ]-P(n)[ X ])²+(P(M)[ Y ]-P(n)[ Y ])²+(P(M)[ Z ]-P(n)[ Z] )²). The smallest distance will tell you which point is the nearest to your mouse, in this case, D(3) = SquareRoot((2-3)²+(3-3)²+(4-3)²) = SQRT(2)
Best regards,
Ghislain
Technical Support and software developer
Xceed Software Inc.
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