Hi,
I am working on an astronomical image library which stitches spherical
images together.
Basically it involves lot of 3D vector rotation and other transforms.
I can not afford to create new Vector3D instance for each pixel, as it
severely degrades performance.
So I am reusing double[3] arrays to represent vectors.
So please could you add this method to Rotation class?
* /** Apply the rotation to a vector stored in an array.*
* * It is more efficient, **as new instance does not have to be created
for each rotation*
* **
* * @param in an array with three items which stores vector to rotate*
* * @param out an array with three items to put result to*
* */*
* public void applyTo(double[] in, double[] out) {*
*
*
* double x = in[0];*
* double y = in[1];*
* double z = in[2];*
*
*
* double s = q1 * x + q2 * y + q3 * z;*
*
*
* out[0] = 2 * (q0 * (x * q0 - (q2 * z - q3 * y)) + s * q1) - x;*
* out[1] = 2 * (q0 * (y * q0 - (q3 * x - q1 * z)) + s * q2) - y;*
* out[2] = 2 * (q0 * (z * q0 - (q1 * y - q2 * x)) + s * q3) - z;*
* }*
Also it would be nice to have method '.toArray' and static '.fromArray' on
Vector3D
Regards,
Jan
http://github.com/jankotek/asterope
