FMM 3D n-body
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Dennis Forbes
System
preset
Two galaxies
Solar system
Plummer sphere
Rotating disk
Collapsing cloud
particles
8192
16384
32768
65536
131072
G
1.00
dt
.0040
softening
.015
planet mass ×
×1
FMM
order p
4
theta
0.50
leaf N
128
error probe
View
point size
1.1
brightness
0.55
spin
planet labels
body trails
glow trails
Pause
Reset
Stats
fps / steps-per-s
—
CPU tree build
—
CPU traversal
—
CPU list upload
—
GPU forces pass
—
nodes / leaves
—
tree depth
—
leaf occ avg/max
—
M2L ops
—
P2P cell pairs
—
P2P body pairs
—
speed-up vs O(N²)
—
coeffs / node
—
rel. force error
—
drag = orbit · wheel = zoom · click = track a body · esc = untrack · space = pause · R = reset