thi.ng/geom

snippet.clj

(require '[thi.ng.geom.core :as g]
         '[thi.ng.geom.core.vector :as v]
         '[thi.ng.geom.spatialtree :as t])

(defn update-tree [tree]
  (fn [agents]
   (reduce
    #(g/add-point % %2 %2)
    (g/clear! tree) ;;works with (t/set-children tree nil)
    agents)))

(def agents (take 50 (repeatedly #(-> (v/randvec3) g/abs (g/* 500)))))
(def updater (update-tree (t/octree 0 0 0 500 500 500)))

(updater agents)
(updater agents) ;;exception



;;1. Unhandled java.lang.IllegalArgumentException
;;   Illegal lookup key: 6

;;                 core.cljc:    3  thi.ng.xerror.core$throw_BANG_/invokeStatic
;;                 core.cljc:    3  thi.ng.xerror.core$throw_BANG_/invoke
;;                 core.cljc:    8  thi.ng.xerror.core$key_error_BANG_/invokeStatic
;;                 core.cljc:    7  thi.ng.xerror.core$key_error_BANG_/invoke
;;               vector.cljc:  619  thi.ng.geom.core.vector.Vec3/invoke
;;          spatialtree.cljc:  259  thi.ng.geom.spatialtree.MutableOctreeNode/make_child_for_point