Math Question

[Windwalk]

so im doing a dashing skill, and it dashes in the angle of what the caster is facing..

so are these the right way to get the Cos and Sin values?

    set cast[hid]=GetTriggerUnit()
    set cos[hid]=Cos(GetUnitFacing(cast[hid]))
    set sin[hid]=Sin(GetUnitFacing(cast[hid]))

 

[cleeezzz]

you have to convert the facing to radians first, i believe.

Deg2Rad(GetUnitFacing(etc....

and yes, for offset (setting distance from point to angle)

set x = x + DISTANCE * Cos(rad)
set y = y + DISTANCE * Sin(rad)

 

[ZakkWylde-]

Just a helping pointer ...

when you convert a value from degree to radian, instead of 360 degrees, it is 2pi ... so 180 degrees = 1 pi.

and cos is the x value; sin is the y value. Offseting something's cos by 13 = setting it 13 to the right...

offsetting sin by -13 = setting it 13 down.

so if your unit was at the origin (0,0), it'd now be at (13, -13)

as a note: I'm not too pro at JASS, but I know math fairly well, so some of the terms I used may not be exactly correct, but I hope you can understand them

 

[uberfoop]

but I know math fairly well, so some of the terms I used may not be exactly correct, but I hope you can understand them

Disagreed. Sines and cosines are not absolute values. You don't 'offset a sin by 13 to move a unit 13 up'. You offset a y coordinate by 13 to do that. Sines and cosines are ratios.

 

[Jesus4Lyf]

set cast[hid]=GetTriggerUnit()
    set sin[hid]=bj_DEGTORAD*GetUnitFacing(cast[hid]) // Efficiency
    set cos[hid]=Cos(sin[hid])
    set sin[hid]=Sin(sin[hid])