Is there a way to improve performance by merging multiple Line objects into a single geometry using GeometryUtils.merge? It doesn't seem to work as expected with Line objects. Is it necessary to redefine the concept of a line to achieve this optimization?
Indeed, manual intervention is required for this task.
Version r.58 of three.js
After encountering the same issue, I came across a solution while browsing for answers. To resolve the problem temporarily, I utilized the third parameter in the THREE.Line constructor. There are two options available - THREE.LineStrip and THREE.LinePieces. Opting for the latter option, it connects a series of segments such as 0-1, 2-3, and so on. By adding a set of vertices for each line like 0-1, 1-2, 2-3, and then resetting this sequence for the next line, I was able to address the issue successfully. Hopefully, this approach will assist you as well if you prefer not to redefine the Line implementation.
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