Hi all.
I have been dealing many days with a problem without any success. In my program
I define a list, let's call it "PHC", by shifting a geometrical object,
cylinder, with geometric-objects-duplicates. The cylinder is therefore a list
which contains its properties: centre (centre . #V), (height . H), (radius .
R), and so on. In particular, the property radius is a pair in the 3rd position
of the list circle: (list-ref cylinder 3) gives (radius . R) and, also, if I do
(object-property-value cylinder 'radius) = R. Now, what I want to do is to
create a new list, PhC-disorder, composed by circles with the same positions of
those of PhC but each with different (random) radius. Then, I try this:
(define PhC-disorder (map
(lambda(obj)
(set-cdr! (list-ref obj 3) (random:normal))
obj)
PhC))
My problem is that it changes the radius of all the cylinders the same way! And
I want a different (random) value for all of them. I know that the function
shift-geometric-object does with the cylinder centre the same that I want to do
with the radius.
I would really thank any help or advise!!
David
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