public GtkGL.Quaternion ToQuaternion()
{
if (quat != null)
{
return(quat);
}
// Assuming the angles are in radians.
double c1 = Math.Cos(x / 2);
double s1 = Math.Sin(x / 2);
double c2 = Math.Cos(y / 2);
double s2 = Math.Sin(y / 2);
double c3 = Math.Cos(z / 2);
double s3 = Math.Sin(z / 2);
double c1c2 = c1 * c2;
double s1s2 = s1 * s2;
quat = new GtkGL.Quaternion(c1c2 * c3 - s1s2 * s3,
c1c2 * s3 + s1s2 * c3,
s1 * c2 * c3 + c1 * s2 * s3,
c1 * s2 * c3 - s1 * c2 * s3);
return(quat);
}
void ClearCache(object o, EventArgs e)
{
// This should happen when the Updated handler fires
quat = null;
transMatrix = null;
}
public GtkGL.Quaternion ToQuaternion()
{
if(quat != null)
return quat;
// Assuming the angles are in radians.
double c1 = Math.Cos(x/2);
double s1 = Math.Sin(x/2);
double c2 = Math.Cos(y/2);
double s2 = Math.Sin(y/2);
double c3 = Math.Cos(z/2);
double s3 = Math.Sin(z/2);
double c1c2 = c1*c2;
double s1s2 = s1*s2;
quat = new GtkGL.Quaternion(c1c2*c3 - s1s2*s3,
c1c2*s3 + s1s2*c3,
s1*c2*c3 + c1*s2*s3,
c1*s2*c3 - s1*c2*s3);
return quat;
}
void ClearCache(object o, EventArgs e)
{
// This should happen when the Updated handler fires
quat = null;
transMatrix = null;
}
