ParticleEffects: improve particle position randomizer algorithm #301
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Using
sin()
for calculating the values ofs
vector will only fill half of the circle around the center,cos()
goes into the negative territory aswell.A little illustration on how it works incorrectly in current versions of arx:
![image](https://private-user-images.githubusercontent.com/2386064/380873638-47a5ba69-3e2a-41fb-9530-47412da59ea5.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.6YLX_H4JK5I9VfM7vXEaEJ5xloRUqs2Kvo6sQczBYiw)
![image](https://private-user-images.githubusercontent.com/2386064/380873680-fe7fc38a-0a54-455b-af79-fb49091863c2.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.MT9Gsk0C8VWAe-xZFo3rKo2MCHu_Loe8gvGVGI8C3PA)