A point in spherical coordinates [r, theta, phi] (Three.js / OpenGL convention)
r - radial distance from the origin
theta - azimuthal angle in the XZ plane from the +Z axis (radians, range [-π, π])
phi - polar angle from the +Y axis (radians, range [0, π])
A point in spherical coordinates [r, theta, phi] (Three.js / OpenGL convention) r - radial distance from the origin theta - azimuthal angle in the XZ plane from the +Z axis (radians, range [-π, π]) phi - polar angle from the +Y axis (radians, range [0, π])