Create a perspective view projection from basic properties.

Input parameters:

1. Pc → Location of view point.
2. Pt → Location of target point.
3. Ll → Lens length (in millimetres) for a canonical 36mm sensor.
   •  14 → 14mm Ultra-wide
   •  24 → 24mm Wide
   •  35 → 35mm Moderate Wide
   •  50 → 50mm Normal
   •  85 → 85mm Portrait
   • 100 → 100mm Macro
   • 135 → 135mm Telephoto
   • 200 → 200mm Long Telephoto
   • 500 → 500mm Near Isometric
4. As → Frustum width to height aspect ratio.
   •                   1 → 1:1 Square
   •  0.7071067811865476 → A# Portrait
   •  1.4142135623730951 → A# Landscape
   • 0.46153846153846156 → 6:13 Smartphone (2020)
   •              0.5625 → 9:16 Smartphone (2015)
   •                 0.6 → 3:5 Smartphone (2010)
   •  0.6666666666666666 → 2:3 Smartphone (2000)
   •                1.25 → 5:4 Television
   •  1.3333333333333333 → 4:3 Fullscreen
   •               1.375 → 11:8 Academy
   •                1.43 → 143:100 IMAX
   •                 1.5 → 3:2 35mm Film
   •  1.6666666666666667 → 5:3 EU wide
   •  1.7777777777777777 → 16:9 HD Video
   •                1.85 → 37:20 US wide
   •                 1.9 → 19:10 Digital IMAX
   •                 2.2 → 11:5 Panavision

Output parameters:

1. Vw → Perspective view with basic properties.
2. An → Resulting minimum view angle.