public override void startWithTarget(CCNode pTarget)
{
base.startWithTarget(pTarget);
CCCamera camera = pTarget.Camera;
camera.getCenterXYZ(out m_fCenterXOrig, out m_fCenterYOrig, out m_fCenterZOrig);
camera.getEyeXYZ(out m_fEyeXOrig, out m_fEyeYOrig, out m_fEyeZOrig);
camera.getUpXYZ(out m_fUpXOrig, out m_fUpYOrig, out m_fUpZOrig);
}
public override void update(float dt)
{
float r = (m_fRadius + m_fDeltaRadius * dt) * CCCamera.getZEye();
float za = m_fRadZ + m_fRadDeltaZ * dt;
float xa = m_fRadX + m_fRadDeltaX * dt;
float i = (float)Math.Sin(za) * (float)Math.Cos(xa) * r + m_fCenterXOrig;
float j = (float)Math.Sin(za) * (float)Math.Sin(xa) * r + m_fCenterYOrig;
float k = (float)Math.Cos(za) * r + m_fCenterZOrig;
m_pTarget.Camera.setEyeXYZ(i, j, k);
}
/// <summary>
/// positions the camera according to spherical coordinates
/// </summary>
public void sphericalRadius(out float newRadius, out float zenith, out float azimuth)
{
float ex, ey, ez, cx, cy, cz, x, y, z;
float r; // radius
float s;
CCCamera pCamera = m_pTarget.Camera;
pCamera.getEyeXYZ(out ex, out ey, out ez);
pCamera.getCenterXYZ(out cx, out cy, out cz);
x = ex - cx;
y = ey - cy;
z = ez - cz;
r = (float)Math.Sqrt((float)Math.Pow(x, 2) + (float)Math.Pow(y, 2) + (float)Math.Pow(z, 2));
s = (float)Math.Sqrt((float)Math.Pow(x, 2) + (float)Math.Pow(y, 2));
if (s == 0.0f)
{
s = ccMacros.FLT_EPSILON;
}
if (r == 0.0f)
{
r = ccMacros.FLT_EPSILON;
}
zenith = (float)Math.Acos(z / r);
if (x < 0)
{
azimuth = (float)Math.PI - (float)Math.Sin(y / s);
}
else
{
azimuth = (float)Math.Sin(y / s);
}
newRadius = r / CCCamera.getZEye();
}