Split a block in a "controled" way

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11-23-2014 02:16 AM
aTomasaLooström
New Contributor

Hi,

I would like to control the splits blocks created when I creates streets, not using type under Block Parameters.

In some cases a block needs to be split in half, with the same area, and in some cases the blocks needs to be split in trees parts, and so on.

Is there a way to control this?

And if there are can some one show me the code to do that? I am still learning and have a looong way left:)

Best regards Tomas

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10 Replies
MatthiasBuehler
Regular Contributor

Hi !

Yes, thinks like this are possible ..

Can you post a few pictures of what you imagine ?

Let me know ..

Matt

Matthias Buehler

Head of 3D Technologies

twitter: @MattB3D

-------------------------------------

Garsdale Design Limited

matthias.buehler@garsdaledesign.co.uk

www.garsdaledesign.co.uk

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aTomasaLooström
New Contributor

Hi,

Good. I like to cut the area (lot and building) along the pink line in a way that I control if it will split the lot in exactly half, or like 10m from the lefthand side.

Your work is awesome...

Tomas

cutt.jpg

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MatthiasBuehler
Regular Contributor

Thanks for the kind words !

Yes, you can do these things, but you need to do them in CGA.

E.g.

BlockShape -->

    split(x) { '0.5: Half. | ~1: Half. }

Matthias Buehler

Head of 3D Technologies

twitter: @MattB3D

-----------------------------------

Garsdale Design Limited

matthias.buehler@garsdaledesign.co.uk

www.garsdaledesign.co.uk

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aTomasaLooström
New Contributor

Hi,

Hmm, I did not get it to work as I would like to.

I sent two new images I hope to get my idea clearer.

block.jpg

I would like to split the block (?) in a controlled way, not using type in the Block Parameters.

goal.jpg

This is the end result I like to get. Here I have used Type Skeleton Subdivision. The problem using type is that it will not split the block as I would like to.

If its possible, can You send me a code for that???

I used the code You send me but did only manage to split extruded volume and I did't manage to offset the to generate some space between them.

Here is the code:

/**

* File:    TL Fastigh med rapport.cga

* Created: 11 Nov 2014 13:01:21 GMT

* Author:  tslm01

*/

version "2014.0"

attr transp = 0.5

attr hojd = 0

attr indrag = 5

attr byggnadfarg = "#804000"

attr gronomradefarg = "#299A1D"

Lot -->

split(x) { '0.3: Half. | ~1: Half. } Fastighet

report("Fastighet area (m2)", geometry.area())

Fastighet -->

offset (- indrag) OffsetFastighet

report ("Fastighet area (m2)", geometry.area())

OffsetFastighet -->

comp(f) {inside: Byggnad

| border: Gronomrade}

Byggnad -->

extrude(hojd)

color (byggnadfarg)

set (material.color.a, transp)

report ("Byggnad höjd (m)", hojd())

report("Byggnad area (m2)", geometry.area(bottom))

report ("Byggnad volym (m3)", geometry.volume())

Gronomrade -->

color (gronomradefarg)

report("Grönområden area (m2)", geometry.area())

Does it make sense?

Best regarde Tomas

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aTomasaLooström
New Contributor

Hi again,

Here is the result when I use the code You sent me.

split.jpg

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MatthiasBuehler
Regular Contributor

Ah, I think I understand now what you need (I'm not perfectly sure).

1 Offset

2 Split in Half with middle part left out (basically the parcelling is done in CGA)

3 extrude to volume

-->

Use 'NO SUBDIVISION' as subdivision type. This way, you get only 1 block shape.

Then use for example this code:

attr blockOffset = 3

attr distance = 2

attr buildingHeight = 10

Lot -->

  offset(-blockOffset)

  comp(f) {border: Done. | inside: Inside }

Inside -->

  alignScopeToGeometry(yUp, any, longest)

  split(x) {{~1: Footprint | distance: NIL}* | ~1: Footprint}

Footprint -->

  extrude(world.y, buildingHeight)

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aTomasaLooström
New Contributor

Hi again,

Forgive me for taking your time. Your code does not share the blocks in a way that I want, the pink line indicates the block devided with your code . The green shows how I want to devide. I want to make one block to two or more blocks. I have devided it with a road with 0 feet in spread. Is it possible to split the blocks in that way without using a road?

If there are no other way how to prevent the Sidewalks to bend in the crossings?

Best regards and happy weekend!!image.jpg

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MatthiasBuehler
Regular Contributor

Hey ..

So you have 2 blocks with a street that is 0 wide. All you need to do is use CGA to split the 1 big block shape into 2 smaller block shapes first.

CGA can ONLY operate on 1 shape. It can not synchronize things with other shapes. So GCA cannot alter or influence the dynamic subdivision, since that only produces the shapes on which a CGA rule is applied.

Ok ? Or did I miss a point ?

m.

Matthias Buehler

Head of 3D Technologies

twitter: @MattB3D

----------------------------------

Garsdale Design Limited

matthias.buehler@garsdaledesign.co.uk

www.garsdaledesign.co.uk

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aTomasaLooström
New Contributor

Hey,

Yes I would like to use CGA to split the 1 big block shape into 2 smaller block shapes.

I do not know how the CGA code should bee written... I do not want to use the road that is 0 wide.

Could You help me with the code, please?:-)?

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