Keywords: Five-fivefold-spirals-Pentaskelion-simpler.svg Abstract pattern with five five-fold spirals a quintuple pentaskelion This is a loose version of image Image Triple-Triple-Spiral-Trisk-simpler svg with pentagonal rotational symmetry For a more elaborate version enclosed within an overall spiral instead of wheeled see Image Five-fivefold-spirals-quintuple-pentaskelion svg own -- Converted from the following PostScript code <pre> /archimdouble PostScript program to display an Archimedean spiral by approximating it with Bezier curves Displays a quintuple spiral ten spirals rotated by 36 degree increments Parameters centerx horizontal coordinate of center of spiral centery vertical coordinate of center of spiral rotf degrees to rotate /sepwid 110 def width separating successive turnings of spiral a tenth of this between successive spirals /incrm 18 def insert a curve point after this number of degrees Procedures /pi 3 1415926535898 def/radians 57 295779513082 def /sepwid sepwid pi div 2 div def gsave centerx centery translate rotf rotate /aspiral /first 1 def lower incrm sweeps 360 mul 8 dup repeat phase add cos/costh exch def phase add sin/sinth exch def costh mul radians div/thcosth exch def sinth mul radians div/thsinth exch def thcosth sepwid mul/x exch def thsinth sepwid mul/y exch def 0 eq phase 90 eq phase 270 eq or and /slope 999999999 def /slope sinth thcosth add costh thsinth sub div def ifelse sinth 0 gt sinth 0 eq costh -1 eq and or /flag -1 def /flag 1 def ifelse /A exch def phase 0 eq phase 180 eq or A 49 29348 lt A 180 gt A 196 273450852 lt and A 360 gt A 368 8301 lt and A 540 gt A 545 9907 lt and A 720 gt A 724 5217 lt and A 900 gt A 903 6281968 lt and or or or or or /flag flag neg def if if phase 120 eq phase 300 eq or A 10 lt A 80 gt A 100 lt and or /flag flag neg def if if phase 324 eq phase 144 eq or A 85 lt A 50 gt and /flag flag neg def if if phase 288 eq phase 108 eq or A 100 lt A 80 gt and /flag flag neg def if if phase 252 eq phase 72 eq or A 140 lt A 115 gt and /flag flag neg def if if phase 216 eq phase 36 eq or A 180 lt A 150 gt and /flag flag neg def if if phase 216 eq phase 36 eq or A 30 lt A 15 gt and /flag flag neg def if if incrm sub 3 dup repeat phase add cos sepwid mul mul radians div /prevx exch def phase add sin sepwid mul mul radians div /prevy exch def incrm add 3 dup repeat phase add cos sepwid mul mul radians div /nextx exch def phase add sin sepwid mul mul radians div /nexty exch def /prevdist x prevx sub dup mul y prevy sub dup mul add sqrt pi div def /nextdist x nextx sub dup mul y nexty sub dup mul add sqrt pi div def /normaliz slope slope mul 1 add sqrt def 0 eq 0 0 moveto/prevbezx phase cos nextdist mul def/prevbezy phase sin nextdist mul def/first 0 def first 1 eq x y moveto/first 0 def prevbezx prevbezy x 1 flag mul normaliz div prevdist mul sub y slope flag mul normaliz div prevdist mul sub x y curveto ifelse /prevbezx x 1 flag mul normaliz div nextdist mul add def /prevbezy y slope flag mul normaliz div nextdist mul add def ifelse for stroke def /sweeps 7 def/phase 0 def aspiral /sweeps 6 def/phase 36 def aspiral /sweeps 8 def/phase 72 def aspiral /sweeps 7 def/phase 108 def aspiral /sweeps 6 def/phase 144 def aspiral /sweeps 5 def/phase 180 def aspiral /sweeps 7 def/phase 216 def aspiral /sweeps 65 def/phase 252 def aspiral /sweeps 5 def/phase 288 def aspiral /sweeps 4 def/phase 324 def aspiral grestore def /curvedge gsave centerx centery translate rotf rotate /lower 235 593 def/phase 324 def/incrm 16 52 def/sweeps 72 def aspiral grestore/lower 0 def def/extensions /lower 256 327 def/incrm 16 314 def/sweeps 300 360 div def/phase 144 def gsave centerx centery translate rotf rotate aspiral grestore /lower 207 879 def/incrm 19 575 def/sweeps 268 360 div def/phase 180 def gsave centerx centery translate rotf rotate aspiral grestore /lower 252 def/incrm 3 965 def/sweeps 256 360 div def/phase 0 def gsave centerx centery translate rotf rotate aspiral grestore /lower 216 def/incrm 5 488 def/sweeps 223 360 div def/phase 36 def gsave centerx centery translate rotf rotate aspiral grestore /lower 340 def/incrm 6 def/sweeps 347 360 div def/phase 72 def gsave centerx centery translate rotf rotate aspiral grestore /lower 299 def/incrm 8 5 def/sweeps 322 360 div def/phase 108 def gsave centerx centery translate rotf rotate aspiral grestore /lower 0 def/incrm 18 def def/lower 0 def /centerx 240 def/centery 306 def/rotf 0 def archimdouble curvedge extensions /centerx 372 def/centery 306 def/rotf 72 def archimdouble curvedge extensions /centerx 199 20975674250694001849726893187 def/centery 431 53946015096027151936999200597 def/rotf 288 def archimdouble curvedge extensions /centerx 412 79024325749305998150273106813 def/centery 431 53946015096027151936999200597 def/rotf 144 def archimdouble curvedge extensions /centerx 306 def/centery 509 12711345356672456963917801831 def/rotf 216 def archimdouble curvedge extensions 306 396 841206751097453521675832406 translate 0 1 4 0 0 187 112 99 154 735 arc stroke 0 0 176 427 98 8 148 667 arc stroke pop 72 rotate for showpage EOF</pre> 2008 AnonMoos <gallery>Five-fivefold-spirals-quintuple-pentaskelion svg</gallery> Spiral symbols Archimedean spirals Computer generated mandalas Images with PostScript source code 5-fold rotational symmetry Round graphic ornaments <galle |