The Dude
07-23-2005, 06:50 AM
Consider the image below. The green screen in the center that the man is watching is a rectangle with an aspect ration of 1:1.73.
We can calculate the coordinates relative to the origin of the entire image (ie, the image's upper left corner = (0,0)) of the three visible coordinates of the green screen: lower-left, upper-left, upper-right. The lower-right is being blocked by the man's head.
The question is: Given ONLY the coordinates of the three visible corners of the green screen, how can we calculate the coordinates of the lower right corner?
EDIT: I realize the coords listed in the picture may not be exactly consistent with the lines they need to fall on, since they were taken from photoshop and I had to eyeball what defined the corner in each particular case. Nevertheless, they should be close enough and I am only interested in the method anyway.
http://www.geocities.com/gaming_mouse/entity.jpg
This is a cross-post from the probability forum from a couple weeks back. Here's the original post by gaming_mouse. (http://forumserver.twoplustwo.com/showflat.php?Cat=&Board=probability&Number=2739831 &Forum=f11&Words=&Searchpage=0&Limit=25&Main=27398 31&Search=true&where=bodysub&Name=20330&daterange= 1&newerval=1&newertype=m&olderval=&oldertype=&body prev=#Post2739831) Those suckers were unable to decide if was solvable or not.
We can calculate the coordinates relative to the origin of the entire image (ie, the image's upper left corner = (0,0)) of the three visible coordinates of the green screen: lower-left, upper-left, upper-right. The lower-right is being blocked by the man's head.
The question is: Given ONLY the coordinates of the three visible corners of the green screen, how can we calculate the coordinates of the lower right corner?
EDIT: I realize the coords listed in the picture may not be exactly consistent with the lines they need to fall on, since they were taken from photoshop and I had to eyeball what defined the corner in each particular case. Nevertheless, they should be close enough and I am only interested in the method anyway.
http://www.geocities.com/gaming_mouse/entity.jpg
This is a cross-post from the probability forum from a couple weeks back. Here's the original post by gaming_mouse. (http://forumserver.twoplustwo.com/showflat.php?Cat=&Board=probability&Number=2739831 &Forum=f11&Words=&Searchpage=0&Limit=25&Main=27398 31&Search=true&where=bodysub&Name=20330&daterange= 1&newerval=1&newertype=m&olderval=&oldertype=&body prev=#Post2739831) Those suckers were unable to decide if was solvable or not.