Create an arc between two points

[hotshotiguana]

I found the problem, here is my solution in Vizard:
xs, ys, zs = get_sphere_line([2.85, -1., 0.238], [1.722, .001, .46],
[3.94, .001, 0.026])
viz.startLayer(viz.LINE_STRIP)
viz.lineWidth(5)
viz.pointSize(5)
viz.vertexColor(viz.YELLOW)
for pos in zip(xs, ys, zs):
viz.vertex([pos[0], pos[1], pos[2]])
points = viz.endLayer()