How a polyline joint between two consecutive line segments
should be drawn by the thick-line renderer.
"miter" — extend each segment's quad along the angle
bisector to a sharp miter point (clamped at ~4 × halfWidth
so acute angles don't spike). The default; matches every
prior SDK release.
"round" — leave the joint un-mitered: each segment's
endpoint quad extends one halfWidth along its own direction
(the same way a free endpoint does), so the rounded-rect
SDF paints a half-disc at every joined side. Two
overlapping half-discs from the two neighbouring segments
together form a circular joint of diameter lineWidth.
How a polyline joint between two consecutive line segments should be drawn by the thick-line renderer.
"miter"— extend each segment's quad along the angle bisector to a sharp miter point (clamped at ~4 × halfWidth so acute angles don't spike). The default; matches every prior SDK release."round"— leave the joint un-mitered: each segment's endpoint quad extends one halfWidth along its own direction (the same way a free endpoint does), so the rounded-rect SDF paints a half-disc at every joined side. Two overlapping half-discs from the two neighbouring segments together form a circular joint of diameterlineWidth.