public float getFov() {
        if (!this.parallelProjection) {
            float fovY = frustumTop / frustumNear;
            fovY = FastMath.atan(fovY);
            fovY /= 0.5F * FastMath.DEG_TO_RAD;
            return fovY;
        }
        return 0;
    }
Obtains field of view when the camera is in perspective mode.

@return Frame of view angle along the Y in degrees, or 0 if the camera is in orthogonal mode.
jme3-core/src/main/java/com/jme3/renderer/Camera.java