What is the label with height in mapbox-gl development?

Editor to share with you what is the high label in mapbox-gl development. I hope you will get something after reading this article. Let's discuss it together.

Except for fill-extrusion, the layers in mapbox-gl are placed close to the ground and have no height information.

Now we need to display a class of tags with height. In the github project of mapbox-gl, we found that one of the branches is to achieve this function, which can achieve a high degree of uniform setting of tags.

Select the corresponding branch and compare it with the code on the main branch to see where the source code has been modified: https://github.com/mapbox/mapbox-gl-js/compare/3993-z-offset

The main changes are as follows:

The symbol-z-offset attribute is added to layout to set the height of the label from the ground, and the value of this attribute is added to the two-dimensional coordinates in the source code.

In the shader transformation, the three-dimensional coordinate attribute vec3 a_projected_pos is entered.

The effect achieved is:

After reading this article, I believe you have a certain understanding of "what is a high label in mapbox-gl development". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!