fibers with spline curve, python tag

fiber_with_spline_curve_sample1.py

import c4d


def main():
    spline = op.GetObject()
    emitter = spline[c4d.ID_USERDATA, 1]
    if emitter == None:
        return
    if emitter.GetType() != 5109:
        spline[c4d.ID_USERDATA, 1] = None
        return

    pData = emitter.GetCache().GetChildren()
    pCount = len(pData)

    pos = []
    for p in pData:
        pos.append(p.GetAbsPos())

    minD = 0
    maxD = 70

    find = []

    for i, p1 in enumerate(pos[:-1]):
        for j, p2 in enumerate(pos[i+1:]):
            dis = (p1-p2).GetLength()
            if dis > minD and dis < maxD:
                find.append([p1, p2])

    findCount = len(find)
    spline.ResizeObject(findCount * 2)
    spline.MakeVariableTag(c4d.Tsegment, findCount)

    p1id = 0
    p2id = 1
    for i, j in enumerate(find):
        spline.SetPoint(p1id, j[0])
        spline.SetPoint(p2id, j[1])
        spline.SetSegment(i, 2, False)
        p1id += 2
        p2id += 2
    spline.Message(c4d.MSG_UPDATE)
    return