Support Forum

Hi Xavi,

if you look at your Code, then the answer is given:

In the 3rd line you calculate n_objects from the length!
After that calcualtion you probably change the length by the handle definition!
And the handle definition afterwards probably changes n_objects...
Very confusing...
You have to know:
HANDLE2 isn't executed at this position! It is only a definition for the handle!
(It changes the parameter value before executing Parameter-Part)

You should do the following:

1. Move the general initialization to Master-Part:

rect_x = 0.5
rect_y = 0.5

2. In the Parameter-Part you have to built in an switch, if
-you want to use the length, and calculate the number
-you want to use the number (and calcualte the length)

!!calculate count
IF GLOB_MODPAR_NAME = "lenght" THEN
n_objects = lenght / rect_x
PARAMETERS n_objects = n_objects
ENDIF
!!calculate length
IF GLOB_MODPAR_NAME = "n_objects" THEN
lenght = n_objects * rect_x
PARAMETERS lenght = lenght
ENDIF

(GLOB_MODPAR_NAME holds the name of the last modified parameter)

Another thing to know is, that if you change a parameter, then you have to
do it inside Parameter-Part, and do it with

PARAMETERS [parameter_name] = [parameter_name]

If you don't use this way, only the variable is changed (valid only for current script part)
At the beginning of each part-execution the parameter values are copied in the variables values...

HANDLE-Modification (dragging it) or input the value (in the dialog) change the parameters value directly(not the variable) before execution of parameter part!

Regards.

Jörg

Hi Xavi,

as I mentioned before, you have to change parameters inside Parameter-Part with:

length_rect = n_rect * rect_x
length_tri = n_tri * tri_x

PARAMETERS length_rect = length_rect , length_tri = length_tri

(at "length" if have corrected the "th" -> you have written "lenght")

But the main mistake is, that you try to create an 3D-element inside the 2D-Script:

POLY 3 ,
0 , 0 ,
tri_x , 0 ,
tri_x / 2 , tri_y

If you really want to create 3D-Polygons, then do it inside 3D-Part!
Otherwise write:

POLY2 4 , 1 ,
0 , 0 ,
tri_x , 0 ,
tri_x / 2 , tri_y,
0,0

Regards

Jörg

There is another solution to this problem, which I discovered by chance. When defining the handles just add handlefactor 1/(the value of distance between the objects) and then you can directly create handles based on the number parameter (n). Don't forget to return to the initial state by adding at the end handlefactor 1.

x = 0.4
y = 1.2

id=id+1
handlefactor 1/x

handle2 0,0,id,n,1
handle2 n*x,0,id,n,2
handle2 -1,0,id,n,3

handlefactor 1
GOSUB "box"

FOR i = 1 TO n - 1
TRANS2 x , 0
GOSUB "box"
NEXT i

RESTORE n - 1

END

"box":

PUT 0 , 0 , 15 ,
x , 0 , 15 ,
x , y , 15 ,
0 , y , 15

POLY2_ NUM_SP / 3 , 1 + 2 + 4 , GET ( NUM_SP )

RETURN