Vector Trigonometry...

[Dach]

This is what I came up with for making a circle without sine or cosine. To me the script looks like its a bit too long for what needs to be done (not talking about relative to using sin and cosine), so I'd appreciate if someone could point out a simpler way to do this. Either way, I'll be able to use this in future scripts to alleviate cpu usage so I'm rather happy. Umm... *runs back to AS*

[TribulationStaff]

Works nicely. However, with such abbreviated variables, some comments would be nice. I can only make guesses at your thought process as is.

Tomorrow I will see what I can do.

[adam]

*digs out his old trig book*

Hmm.. Yes yes.. Now to try to understand what you just did there.

[Dach]

oops, forgot how hard it is to understand any script without any kind of help;
r - radius
px - pointx
py - pointy
seg - segment length (parts of a tile or something...)
^ edit those to change the effects
dx - x dist from center to point
dy - y dist from center to point
c - vector length from center to point
uc - altered vector length (makes seg usefull)
pdx - dist I want to move point x
pdy - dist I want to move point y
pndx - new dist for point y
pndy - ^ same for x
nc - new radius
unc - altered new radius (keep the radius the same)
pnx - new point x
pny - new point y

basically i'm finding the tangent to the current vector, then changing the vector without altering the radius

[Python523]

kai posted something that didn't require sin/cos besides for like 2 vars he created using it...I think I have it somewhere...

NPC Code:

---

if(playerenters){

  this.rad=2.5;

  this.x=0;

  this.y=this.rad;

  this.anginc=16/360;

  this.s=sin(this.anginc);

  this.c=cos(this.anginc);

  timeout=0.05;

}

if(timeout){

  this.x2=this.x*this.c-this.y*this.s;

  this.y2=this.y*this.c+this.x*this.s;

  this.x=this.x2;

  this.y=this.y2;

  x = 30 + this.x;

  y = 30 +  this.y;

  timeout=0.05;

}

---

I might've edited it myself a little bit but oh well

[Dach]

Originally posted by Python523
whatnot

Oh jeez, I've been looking for that on and off since this spring! Never asked anyone for it though...

[wonderboysp2p]

ask and you shall recieve