Layers

[Kilinich]

There are a great algodoo undocumented feature - layer.
To create a layer, use the command

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Scene.addLayer {visible: = true; color: = [1, 1, 1, 1]; id: = 2; dynamic: = false};

To put a geom on some layer, you need to specify layer id when you create it:

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Scene.addbox {layer: = 2; ...}

or to draw interactively, set active layer by entering command

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scene.selectLayer(2)

Changing the properties of the layer can be done via the same command - scene.addLayer

visibility - to show layer or not
color - a factor for all the colors in the layer (eg [1,1,1,0.5] will do a translucent
dynamic - whether physics cheat on this layer, or it just a "picture"

All that could be very handy if you want to make few locations or just a picture with no performance impact and so on.

[Kilinich]

Demo scene
Press 1,2

Layers demo

Kilinich

Rating:
Filesize: 12.92 kB
Comments: 7
Ratings: 2

[s_noonan]

Interesting. How did you learn about this information?

[Kilinich]

Interesting. How did you learn about this information?

Saw that commands in console then pressing tab after "scene."
Then tried to use and looked into scene's code.

[s_noonan]

Thanks. I learned something new today!

[faytree]

wow,marvelous ! you are a teacher of algodoo and all of us are students of you!

[Xray]

Хорошая работа!

This is great information! Thanks for sharing.

[Xray]

I played around with layers after learning about this, and found that you can do some very interesting things with it!



FUN STUFF!!!

[Kilinich]

But remember, this is experimental and unsupported feature!

[Xray]

Questions about Layers:
1. If I add a new layer (for example, layer id = 1), will the original "default" layer automatically become layer 0 (zero)?

2. If I add textures and geomtries on the default layer (0), and then add and select layer 1, I find that I cannot add existing geometries (such as "Phunlets") to the scene on layer 1. Is that because the phunlets were created while on layer 0? How can I add Phunlets and other pre-existing geometries on a newly created layer?

3. Once layers have been added to a scene, is there a way to REMOVE them?

Thanks

[Kilinich]

1. Yes, default is always 0
2. Any entity can be added to any layer with "layer = id" property
3. I did'n find how to do it

[guyboy]

3. Yes, in the background edit menu, the last item is "layers". In the layers menu, the red X deletes layer.

[Xray]

3. Yes, in the background edit menu, the last item is "layers". In the layers menu, the red X deletes layer.

I clicked on the background edit menu, and I do not see "layers". I'm using V2.0.2 b15 Algodoo for Education. Maybe you are using a different version?

[monstertje3]

in the new beta, v2.1.0 b4 there is a layers menu when you left-click the background.