if-then situation with a fractal/growth algorithm

first i wanna indicate that i'm new to the grasshopper and scripting. What I wanted to achieve that creating volumetric cubes which will seem like randomly spread in x,y and z directions.(but not randomly spread) i'll add an image about the identical depiction of the thing that i wanted to achieve.

here comes my problems :

- these cubes' sizes should change with a growth of fractal algorithm.

- for the other volumes that will be shattered between cubes should not touch or overlap each other. I think that I must write an if-then conditional script which says " if a cube overlaps on an other one, then move the other one away." but i have no idea how to do it, i am searching for tutorials and e-books about it, but no tutorial solved my problem and e-books are mostly about scripting and even if i want to start and go further on scripting, i have a limited time to solve this problem.

PS: for the images that i upload; these are only for to describe my idea, i used jitter to randomize but i should have an algorithm to be able to control the distances or density of the boxes.i also added a sketch to describe my idea but conceptually.

Attachments:

cube idea.jpg, 225 KB
cube idea 2.jpg, 76 KB

Replies to This Discussion

Permalink Reply by ibrahim çağrı uslu on November 7, 2010 at 11:25am

no one to say anything? even a small idea to lead me in a way?

Permalink Reply by taz on November 7, 2010 at 11:36am

Your example images don't look like they have a fractal relationship.

Maybe you're looking for a discrete subdivisional-type relationship.

If you want boxes, try playing around with OcTree (3D) under the Mesh tab.

Permalink Reply by Evert Amador on November 7, 2010 at 2:13pm

Hi Ibrahim,

Another approach without scripting may be creating a series of scaling factors with the sort of fractal growth you are talking about and scale the initial cube.

Then create a new series based on the first series( or perhaps the first series itself) to find the coordinates of the corner of different boxes. doing some maths you should be able to figure out a formula to give you the corners so you end up with points you can move the scaled boxes to.

Just and idea!

Cheers

Evert

Permalink Reply by ibrahim çağrı uslu on November 17, 2010 at 1:16pm

thank you taz and evert amador, for your comments.

to achieve what i want to create, i should somehow combine both of your advertises. I can define the poins on a box and check that if it is inside of another box or not (surfaces->utilities-> inside ). or i can put a parameter to calculate the distance between points and write the formula that "if the x distance is smaller than y value, add z to x value". but even if i write it, it changes nothing. (i use f1 or f2 scripts under math) i even tried to select the ones which have true boolean result from the distance formula and move only these ones but it didn't work.

if anyone can help me with these statements, i would be grateful.

i will start two other discussions related with this problems to indicate my goals clearly, one of them will be about coloring these boxes with different colour and the other will be about creating level differences between boxes.

btw i'm uploading a definition which i found on modelab.nu and modified a little to make similar that i wanted. i guess that will help the ones who is trying to make similar things a lot. but there was a picture on the page of definition which attracted me a lot but the definition is far different from the picture, is there anyone that have an idea about that? (source: http://modelab.nu/?p=2734 )

Attachments:

order 2.ghx, 343 KB
volumes01b_resizedForWeb.jpg, 88 KB

Permalink Reply by Shawn Fernandez on November 17, 2010 at 2:17pm

I'm not sure if it helps you or not, but you can make a simple VB Switch component ...

Private Sub RunScript(ByVal f As Object, ByVal Ai As Object, ByVal Bi As Object, ByRef Ao As Object, ByRef Bo As Object)

If f Then

Ao = Ai

Bo = Nothing

Else

Ao = Nothing

Bo = Bi

End If

End Sub

Feed a boolean into f for a simple If ... Then ... Else component.

Permalink Reply by ibrahim çağrı uslu on November 19, 2010 at 7:11am

thank you shawn. i used the code and created a vb script but i'm not good at scripting yet and i guess i made a mistake because it is shown red in gh. i'm still working on it, so i'll let you know if that worked for me or not. thank you again for your help.

Permalink Reply by Shawn Fernandez on November 19, 2010 at 7:40am

Make sure that your input and output variables match whatever is in the script text. That's most likely what's causing it to go red.

Permalink Reply by Shawn Fernandez on November 19, 2010 at 8:05am

Here's the component as I have it. I use this quite a bit.

Attachments:

temp.ghx, 109 KB

Permalink Reply by ibrahim çağrı uslu on November 19, 2010 at 8:11am

thank you again, because of being a newbie to gh and these issues, i made a silly mistake that i fixed it now with your definition's help. now I'll try to combine it with my case and try to benefit from this definition as much as I can :) thank you again Shawn. =)

Permalink Reply by Shawn Fernandez on November 24, 2010 at 9:18am

With the latest release of GH (8.0002), now you can just use the new Pick'n'Choose component, it should reduce the number of components and perhaps make the solution more lightweight.

Attachments: