objective c - Fast drawing using NSBezierPath drawing at least 4000 segments -


i'm trying draw 4000-10000 segments using nsbezierpath on every drawrect of nsview (about 300x300 pixel box). resource heavy , taking lot time draw (relatively long).

can suggest substitute this? i've tried using single nsbezierpath 1000 segments @ time, it's still resource heavy.

i'm looking possible alternatives. i'm sure opengl faster, don't know if have learn new platform in order need. i'm open suggestions.

not answer, test results

i did simple experiment mathematica. experiment gives absolute upper bound time, since used no optimization, no gpu, interpreted language, etc. think more 1 order of magnitude achievable.

results:

generating 10.000 bezier curves list 

b = table[     {hue[randomreal[]],       beziercurve@randomreal[{0, 300}, {4, 2}]}, {10000}];

is quick, because mathematica not evaluate nothing.

now rendering: 

h1 = absolutetime[]; print@graphics[b]; h2 = absolutetime[]; print[h2 - h1];  time spent 11.8 secs

result:

alt text

ps: intention set timing baseline our mindset.


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