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[PaulW]

Yes I know its a Sunday night, but I'm tearing my hair out here!!

I need a formula to work out coordinates on a 2D axis given rotation angle and position from central XY coordinates...

So, for example..
X=0, Y=0
Angle = 0
Distance = 10

That would mean X1=10, Y1=0

But I need a formula to calculate X1 and Y1 dependant on whats entered for Angle and Distance.

I've tried various things in regards to working out rotations (x*cos(angle)-y*sin(angle)) malarky, but get some stupid results in the spreadsheet...

Any helpers??

[Darth Loo-knee]

Better go and wake my daughter up for that one  

[Andy B]

Yes I know its a Sunday night, but I'm tearing my hair out here!!

I need a formula to work out coordinates on a 2D axis given rotation angle and position from central XY coordinates...

So, for example..
X=0, Y=0
Angle = 0
Distance = 10

That would mean X1=10, Y1=0

But I need a formula to calculate X1 and Y1 dependant on whats entered for Angle and Distance.

I've tried various things in regards to working out rotations (x*cos(angle)-y*sin(angle)) malarky, but get some stupid results in the spreadsheet...

Any helpers??

Errrrr! No! Sorry Paul. I can remember that Some Old Horses Canter Across somewhere ........        

[PaulW]

Its ok, finally figured it...

RAngle = Angle / 180 * Pi
x1 = cos(RAngle) * Radius + X
y1 = sin(RAngle) * Radius + Y

 

[Darth Loo-knee]

Was going to say that  

[PaulW]

all that just to build a tower...



but not happy with the code, so started re-coding it...  it's due on the 15th and I still need to implement physics and collision detection...