FOV Table.rst

Intro

Horizonal FOV is preferred to describe the FOV. IceCube uses horizontal FOV for the FOV setting.

There's a bug in the FOV calculation. To convert your Cube FOV to horizontal FOV, follow the procedure below:

Take the fov setting from Cube. Don't use this number for fov in the table below; you can refer to this as cfov ("Cube FOV").
Divide by the aspect ratio of your screen. This number is fovy, and it is this fovy that sets the FOV.
Look up fovy in the table below.
Read the fov value from the line for that fovy. The is the true FOV for that "Cube FOV" setting.

The ratio in bold is the aspect ratio of your screen.

4:3		16:9		2:1		22.5:9
fov	fovy	fov	fovy	fov	fovy	fov	fovy
15	11.28	15	8.47	15	7.53	15	6.03
20	15.07	20	11.33	20	10.08	20	8.07
25	18.88	25	14.22	25	12.65	25	10.14
30	22.73	30	17.14	30	15.26	30	12.24
35	26.61	35	20.11	35	17.92	35	14.38
40	30.54	40	23.14	40	20.63	40	16.57
45	34.52	45	26.23	45	23.40	45	18.82
50	38.55	50	29.39	50	26.25	50	21.13
55	42.65	55	32.64	55	29.18	55	23.52
60	46.83	60	35.98	60	32.20	60	26.01
65	51.08	65	39.43	65	35.34	65	28.59
70	55.41	70	43.00	70	38.59	70	31.29
75	59.84	75	46.69	75	41.98	75	34.13
80	64.37	80	50.53	80	45.52	80	37.11
85	69.00	85	54.54	85	49.23	85	40.26
90	73.74	90	58.72	90	53.13	90	43.60
95	78.60	95	63.09	95	57.24	95	47.16
100	83.58	100	67.67	100	61.58	100	50.97
105	88.69	105	72.49	105	66.18	105	55.07
110	93.93	110	77.55	110	71.06	110	59.48
115	99.31	115	82.89	115	76.25	115	64.25
120	104.82	120	88.51	120	81.79	120	69.43
125	110.47	125	94.43	125	87.69	125	75.08
130	116.26	130	100.68	130	93.99	130	81.25
135	122.18	135	107.27	135	100.72	135	88.00

The ratio in bold is the aspect ratio of your screen.

3:4		9:16		1:2		9:22.5
fov	fovy	fov	fovy	fov	fovy	fov	fovy
15	19.91	15	26.35	15	29.50	15	36.44
20	26.46	20	34.81	20	38.85	20	47.58
25	32.93	25	43.02	25	47.82	25	57.99
30	39.32	30	50.94	30	56.37	30	67.63
35	45.60	35	58.54	35	64.47	35	76.49
40	51.77	40	65.81	40	72.10	40	84.60
45	57.82	45	72.73	45	79.28	45	92.00
50	63.74	50	79.32	50	86.01	50	98.75
55	69.53	55	85.57	55	92.31	55	104.92
60	75.18	60	91.49	60	98.21	60	110.57
65	80.69	65	97.11	65	103.75	65	115.75
70	86.07	70	102.45	70	108.94	70	120.52
75	91.31	75	107.51	75	113.82	75	124.93
80	96.42	80	112.33	80	118.42	80	129.03
85	101.40	85	116.91	85	122.76	85	132.84
90	106.26	90	121.28	90	126.87	90	136.40
95	111.00	95	125.46	95	130.77	95	139.74
100	115.63	100	129.47	100	134.48	100	142.89
105	120.16	105	133.31	105	138.02	105	145.87
110	124.59	110	137.00	110	141.41	110	148.71
115	128.92	115	140.57	115	144.66	115	151.41
120	133.17	120	144.02	120	147.80	120	153.99
125	137.35	125	147.36	125	150.82	125	156.48
130	141.45	130	150.61	130	153.75	130	158.87
135	145.48	135	153.77	135	156.60	135	161.18