redraw ExtrudePolygonLayer

[jaronimoe]

hi, I wanted to animate the extruded buildings by continuously increasing or decreasing their height. for this I simply update the data of the ExtrudePolygonLayer.

however, I was unable to figure out how to redraw the Layer once I updated the data.

kind regards

[fuzhenn]

Thanks for the issue!

It doesn't have a method to update data.

maptalks.biglayer is an experimental plugin about to retire, I am working on a new layer plugin (naming maptalks.vectortile) to replace biglayer to load data via in-memory vector tiles. The new one has animation support in nature.

So if you can wait for a while (about 3-4 weeks), I will keep you updated once the new plugin completes.

If you can't wait, please let me know, I will manage to add some new methods in ExtrudePolygonLayer for your requests.

[jaronimoe]

thank you for the reply!

I was able to set the data via

polylayer.data = polys;   //where polylayer is a maptalks.ExtrudePolygonLayer(..) object

my layer then contained the new data - so I thought if I simply trigger a redraw of that layer I would see the change.

if that's not possible, you do not have to add any new features to the deprecated plugin just for me - I can definitely wait.

cheers!

[fuzhenn]

Thanks for your understanding!

[jaronimoe]

I have another question concerning the extrudePolyLayer:

is it possible to change the direction of the incoming light?

currently the light source shines straight down onto the extruded building which means that the brightest face of a building is the one on top. however, for my purposes I use a tilted view, so it would be preferable if the light would shine from the front, for instance from the direction of the camera.

[fuzhenn]

Sorry, didn't see your comment. Yes, you can change the light direction by setting an option named lightPos, the default is [0, 0, 35]

var layer = new maptalks.ExtrudePolygonLayer(id, data, {
   lightPos : [0, 0, 35]  //change to other direction you like
});

And there are some other possible useful options, please check out the source code: https://github.com/maptalks/maptalks.biglayer/blob/master/src/layer/ExtrudePolygonLayer.js#L70

[jaronimoe]

thank you!

[andibuwono]

Hii, Is the VectorLayer ready for Extrude Polygon like functionality now? Thank you.

[fuzhenn]

Hi @andibuwono , I'm working on a new gl renderer of VectorLayer, it may be ready in about 3-4 weeks.

It's designed to render geometries with webgl with convience of maptalks.VectorLayer and maptalks.Geometry. And of course extrusion will be included in.

You can refer to this issue for details.

[andibuwono]

Many thanks, looking forward for that