Random block insertion into defined area

[kivist]

Hi!

Is there a command or lisp to randomly insert certain blocks (eg. trees) into polyline defined area ? So I select some area defined with polyline and then I want to insert into that area randomly lots of tree blocks (or whatever blocks).

Tried to google but didn't find anything useful.

Any ideas ? 

M.

[Alfred.NESWADBA]

Hi,

I did something like that with the following principle steps:

• get bounding box of the polygon
• for x = boundingbox.min.x to boundingbox.max.x by your x-stepsize
•    for y = boundingbox.min.y to boundingbox.max.y by your y-stepsize
•        here is a new xy-coordinate (like that of an array command)
•        xnew = x + random value (within a tolerance to the left/right, positive or negative)
•        ynew = y + random value (within a tolerance to the left/right, positive or negative)
•        that coordinate xnew/ynew is now more randomized, depending on a higher or lower tolerance value it look more like an array or more randomized
•        check if that new coordinate is inside the polygon
•        if yes ==> that's a new point
•    next y
• next x

HTH, - alfred -

[MetroVancouverDrafting]

1. Insert one block

2. Use array to multiply the entire area

3. Use MAPCLEAN.Select objects / Duplicates / Desired minimum distance

4. Use MAPTRIM. Select Boundary/Select Objects/Trim Outside Boundary