integration step= integration interval=
t-as: tmax max points
x-as: $\frac{dx}{dt}=$ \(x_{0}=\) xmin xmax
y-as: $\frac{dy}{dt}=$ \(y_{0}=\) ymin ymax
z-as: $\frac{dz}{dt}=$ \(z_{0}=\) zmin zmax