Hi folks,
how can i make a vector with radius 1
point to a sphere ??
i know what it is in 2d, but my imagination is limited,
in 3d it doesnt work as well
i have these formula
//alpha is x,y angle
//beta is x,z angle
float alpha = ::getRandomMinMax( 0.0f, 360.0f );
float beta = ::getRandomMinMax( 0.0f, 360.0f );
float x = cos(alpha) * cos(beta);
float y = sin(alpha) * sin(beta);
float z = cos(alpha) * sin(beta);
and a picture
you can click on it.
and can someone explain what a vector should look like if alpha and beta are 90 degree... i think that there is the mistake cause sin(90) * cos(90) is always 0
the problem is at 45 and 0 degrees these vectors are just too small, but
x = 0,7 * 1 = 0,7
y = 0,7 * 0 = 0
z = 0,7 * 0 = 0
would be (45,0) = (0.7,0,0) and that is ok isnt it ??
[Edited by - Ben091986 on March 23, 2008 6:33:05 PM]
and can someone explain what a vector should look like if alpha and beta are 90 degree... i think that there is the mistake cause sin(90) * cos(90) is always 0
the problem is at 45 and 0 degrees these vectors are just too small, but
x = 0,7 * 1 = 0,7
y = 0,7 * 0 = 0
z = 0,7 * 0 = 0
would be (45,0) = (0.7,0,0) and that is ok isnt it ??
[Edited by - Ben091986 on March 23, 2008 6:33:05 PM]
