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Accessing individual vector xyz coordinates

by Zach Broderick · in Technical Issues · 11/22/2007 (9:43 pm) · 2 replies

Ive searched and searched but I can't find anywhere how to access individual vector coordinates.

The vector in question is going to be used for an applyImpulse() function.
I need to make the Z axis 0, and I need to turn the vector 90 degrees counterclockwise on the XY axis.

I'm fairly confident in my ability to do this, if I could just access the individual axises.

I'm assuming its something along the lines of %variableName.setZ(); or %variableName[3] = 0; And I've tried everything I can thing but I cant get it to work out.
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Torque Owner Michael Bacon
Default Studio Name
#1
11/22/2007 (11:08 pm)
This should help you tear apart and reconstruct vectors. This is exactly how it works:

%vec = "0 0 1";

%x = getWord(%vec, 0);
%y = getWord(%vec, 1);
%z = getWord(%vec, 2);

%newVec = %x SPC %y SPC %z;

Torque Owner Zach Broderick
#2
11/23/2007 (12:00 am)
Wow super fast reply, thanks Brian.

It worked perfectly.

For anyone interested in how I rotated the vector 90 degrees look here.


Incase the link dies...

In a right-handed coordinate system, the rotations are as follows:

90 degrees CW about x-axis: (x, y, z) -> (x, -z, y)
90 degrees CCW about x-axis: (x, y, z) -> (x, z, -y)

90 degrees CW about y-axis: (x, y, z) -> (-z, y, x)
90 degrees CCW about y-axis: (x, y, z) -> (z, y, -x)

90 degrees CW about z-axis: (x, y, z) -> (y, -x, z)
90 degrees CCW about z-axis: (x, y, z) -> (-y, x, z)

If you're using a left-handed coordinate system, simply switch 'CW' with 'CCW' above.