lecture 4 Flashcards
which one is simpler to process and why ?
1- the 2D viewing process
2- the 3D viewing process
1-the 2D viewing process because in order to render a scene to a screen you only need to map the window to the viewport
what does 3D viewing mean ?
it mean to transform the objects from the world coords to the device coords
in the model space we only have one coordinate systme ?
false we have a coordinate system for each model
different spaces mean ?
different coordinate system
in the world space we only have one coordinate system ?
yes we have one coordinate system because we unify the model space coordinate system to one (world) coordinate system
we create the view volume in the ?
1-view space
2-camera space
3-model space
4-world space
we create it in the view space or camera space ( they are the same by the way )
when do we set the view camera position and where ?
we can set it wherever we want at some point in the 3D world coordinate system (in the world space)
if an object is inside the view volume then ?
1- we will see the object
2- we will not see the object
3- we will clip the object
1-we will see the object
when do we clip the object ?
1- if it is inside the view volume
2- if it is outside the view volume
3- if it is partly inside the view volume
3-if it is partly inside the view volume
what happened to frustum that has been cliped ?
they are squished into a unit cube with a normalized coordinate
in the screen space the images are in ?
1-1D format
2-2D format
3-3D format
4-4D format
2-2D format
converting the object into pixels called ?
1- squishing
2- normalization
3- clipping
4- resterization
4- resterization
what is a pipeline ?
it A series of transformations have to be
applied to a 3D CG model before its image appears in
the physical display device
what is modeling
transformation stage ?
it is a series of transformations that tranform an object from it model coordinate (or model space ) to the world coordinate (or world space )
