00:01
All right, so consider viewing rectangle in 2d, i .e.
00:05
Only the parts of the object inside the rectangle are visible and consider clipping line segments using a rectangle.
00:11
It turns out that we only need to consider the line segments and points in order to determine whether it's completely visible, partially clipped, or completely clipped.
00:18
Show this is true and draw all possible situations.
00:21
Also, do the situations you provide in 2d also to apply to viewing using prism in 3d.
00:27
You don't need to provide all the possible situation and just explain as to why or why not.
00:32
So here, if we're going to draw a rectangle in 2d, remember if we drew it in 3d, it would look something like this, and we'd have numerous lines intersecting each other.
00:53
So in 2d, we have a line going up this way, and this is completely outside, and it's not visible.
01:13
We have a line going from here to here.
01:21
This one is completely visible...