Questions tagged [camera]

I am writing an OpenSceneGraph based program that uses two cameras, one to render the preview for the user and one that uses a callback to make screenshots with MRT. The exporter camera is using an orthographic projection and always from the same…

I am trying to find an equation for a camera projection. The goal is to map the point $P(P_x, P_y, P_z)$ from the world coordinates onto the window coordinates $Q(Q_x, Q_y)$. The eye of viewing is located a distance D from the…

Assume eye position e, gaze direction g, view-up vector t, right-handed base. As the graphs shows: $w=-\frac{g}{||g||}$ $u=\frac{t\times w}{||t\times w||}$ $v=w\times u$ I am really confused about the 2nd equation $u=\frac{t\times w}{||t\times…

I am working on a virtual camera inside a game engine, which provides me with an FoV control, but no Focal length control (and no filming sensor dimensions short of aspect ratio), and I am less than a beginner in photography. Now when I position the…