Animated arc layer - increasing arc segments, need advice

[gallickgunner]

Hello, I created an animation as shown in the gif above. I did this by extruding a specific arc segment found by the segmentRatio variable in the shader over time. The problem is the pings are quite long and I want them to be more ball like. I think this is due to the low number of segments. Also the elongated pings are more visibile at higher zoom levels since then a larger part of the screen would be rendering that specific segment.

1. Is there any way I can change the number of segments or perhaps decrease the length of the ping without increasing the segments and rendering overhead?

2. Secondly, I need a unique ID for every arc. Not arc layer but every arc in the arc layer so that I can randomize the starting times of the animation. Currently they are in sync. I'm currently using the instancedSourcePosition for this thing but if there are multiple arcs from same source to target with a tilt parameter to distinguish them, the pings would again go in sync. I could use the instanceTilts attribute but is there any other sophisticated variable for this purpose? I'm so used to compute shaders, I was thinking of invocationIDs but I don't think vertex shaders have those if i'm right.

Thanks.

[Pessimistress]

You will need to subclass the ArcLayer. See https://deck.gl/docs/developer-guide/custom-layers/subclassed-layers

• override _getModel to use a custom resolution
• add your own attribute to the shader. example

[gallickgunner]

Ok, I did what you said and got it to work like i wanted. Thanks again pes.