lecture 6 Flashcards
three degrees of freedom mean
x,y,and z coordinates in 3 space
what is the job of the look vector
it determine the direction of the camera (aka where it is looking to )
the look vector can only be one of the (x,y,z) axis ?
false it can be any vector in the 3-space
who determine how the camera is rotated ?
1- the look vector
2- the up vector
3- the down vector
2- the up vector
what is the job of the angle view ?
it determine the amount of prespective distrotion in a picture ?
we see the objects if they are ?
1- before the front clipping planes
2- after the back clipping planes
3- between the front and back clipping planes
4- not between the front and back clipping planes
3- between the front and back clipping planes
what does the focal length measure ?
it measure the idea focusing length
objects at distance of focal length from a camera are ?
1- rendered in focus
2- rendered in blurred
3- not rendered at all
1- rendered in focus
do we have a view angle in the parallel projection ?
no we don’t have
how can we specify the view plane ?
1- we need to define the view reference point which the same as the camera position
2- we need to define the view plane normal
3- viewing up vector
the vpn is ____ to view plane ?
1- normal
2- parellel
1- normal or Perpendicular to the view plane
Any part of the 3D world that projects into the view plane
outside of the window is ?
1- displayed
2- not displayed
3- blurred
4- focus
2- not displayed
the content of the window are ?
mapped to the viewport
the origin of the vrc (view reference croordinate ) is ?
vrp (view reference point )
in the VRC the n axis is ?
the VPN (view plane normal)
