ClutterPerspective

struct ClutterPerspective {
  gfloat fovy;
  gfloat aspect;
  gfloat z_near;
  gfloat z_far;
}

Stage perspective definition.

fovy: The field of view angle, in degrees, in the y direction.
aspect: The aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
z_near: The distance from the viewer to the near clipping plane (always positive).
z_far: The distance from the viewer to the far clipping plane (always positive).