Graphics: Difference between revisions

:Oni defines the vertical field-of-view (FOV), i.e., the angle between the top and bottom planes of the frustum as measured at the camera's location, and its default value is 45°. On a 4:3 screen, the corresponding horizontal viewing angle is '''2 * arctan(4/3 * tan(45° / 2)) = 57.8224°'''

:On a 16:9 or 16:10 screen, the horizontal viewing angle for a vertical FOV of 45° is larger: '''2 * arctan(16/9 * tan(45° / 2)) = 72.73435°''' and '''2 * arctan(16/10 * tan(45° / 2)) = 67.0682°''', respectively. This causes insufficient frustum culling in some of Oni's cutscenes (intro sequences of {{C|2}}, {{C|11}}, and {{C|14}} for example). A quick way to fix this is to bring the horizontal viewing angle down to the supposed '''57.8224°''' during the cutscene: the 4:3 viewport will then effectively be trimmed vertically rather than extended sideways. On 16:9 and 16:10 screens, the corrected vertical FOV will be '''2 * arctan(3/4 * tan(45° / 2)) = 34.515877°'' and ''2 * arctan(5/6 * tan(45° / 2)) = 38.0871°''', respectively. Remember to set it back to 45° after the cutscene to fully enjoy the extended viewport. (Note that the [[AE]] contains widescreen patches for some of these cutscenes.)