diff --git a/src/voxelburst/core.clj b/src/voxelburst/core.clj
index b93063d..7e2260a 100644
--- a/src/voxelburst/core.clj
+++ b/src/voxelburst/core.clj
@@ -53,7 +53,7 @@
   (Trace. origin (random-vel) start-radius start-lifespan (+ 70 (rand-int 10))))
 
 (defn drawing? [t bounds]
-  (and (in-bounds? (:position t) bounds)
+  (and (in-draw-bounds? (:position t) bounds)
        (> (:radius t) 0)
        (> (:lifespan t) 0)
        (< (:start-time t) 0)))
@@ -98,18 +98,22 @@
   [v [lo hi]]
   (and (>= v lo) (<= v hi)))
 
-#_(defn in-bounds?
+(defn in-bounds?
   "Inside bounds box?"
   [p bounds]
   (every? true? (map #(single-in-bounds? %1 %2) p bounds)))
 
-#_(defn complex-single-in-bounds?
+(defn complex-single-in-bounds?
   "Is a single value in bounds?"
   [v [lo hi]]
-  (and (>= v lo) (<= v hi)
-       (>= (math/abs v) (/ hi 5))))
+  (let [spread (- hi lo)
+        mid (+ lo (/ spread 2))
+        gap (/ spread 20)]
+    (and (>= v lo) (<= v hi)
+         (or (<= v (- mid gap))
+             (>= v (+ mid gap))))))
 
-#_(defn in-bounds?
+(defn in-draw-bounds?
   "Inside complex box?"
   [p bounds]
   (every? true? (map #(complex-single-in-bounds? %1 %2) p bounds)))
@@ -117,7 +121,7 @@
 (defn in-bounds?
   "Inside sphere?"
   [p bounds]
-  (<= (v-mag (v-- p [500 500 500])) 220))
+  (<= (v-mag (v-- p [500 500 500])) 400))
 
 (defn trace-trajectory
   [trace bounds]
@@ -159,5 +163,5 @@
   [count]
   (time
    (with-open [o (io/output-stream "sample.ply")]
-     (let [tree #_sampletree (sample-tree count)]
+     (let [tree #_sampletree (time (sample-tree count))]
        (mio/write-ply o (g/tessellate (g/scale (iso/surface-mesh tree 5 0.9) 0.01)))))))