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Does anyone have the functions to determine the x,y,z function of a vector based on its angle(s) in degrees? Basically, I'm playing around with objects moving in three dimensions (think 8-ball in space) and cant find the equations to figure out what to add to x,y and z based on the direction of the object.
This is a cut from my 3d-engine
The things here are:
position, an userdef-type
.x
.y
.z
alfa is the vertical angle
beta is the horisontal angle
v is the velocity
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Sub flightsim() 'Flygsimulatorn förflyttar positionen
position.z = position.z + Sin(-alfa) * Cos(beta) * v
position.Y = position.Y + Cos(-alfa) * Cos(beta) * v
position.X = position.X + Sin(-beta) * v
alfa = alfa + alfav: beta = beta + betav
betav = betav * 0.95 'Friktion vid svängningar
alfav = alfav * 0.95
If alfa > 3.1415 Then alfa = alfa - 3.1415 * 2 '360 grader snurr lösning
If alfa < -3.1415 Then alfa = alfa + 3.1415 * 2
If beta > 3.1415 Then beta = beta - 3.1415 * 2
If beta < -3.1415 Then beta = beta + 3.1415 * 2
End Sub
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Don't have time to modify it for your need, but try to get use of the three first lines. Don't bother to translate my swedish comments.
Thanks, but, it doesn't seem to be doing quite what I expected. How about this, on a 2d plane, the origin in the top left corner, what would one add to the x coordinate of an object if it was moving in a direction described by Q degrees, with Q=0 being the top of the plane, Q=180 being the bottom.
OK add R*Cos(Q/57.2958) to y and R* sin(Q/57.2958) to x
VB likes it's angles in radians which is why the 57.2958 is there.
Your code is commented in Swedish.
Is there a fellow Swede out there?
Myself, I live in Kungsbacka, south of Gothenbourgh.
Pentax