>>13344803Use right triangle similarity.
From your image, if the 2D principal plane is half the distance of point P (both measured from Fc), then y & x will be 1/2 of Y & X respectively on your 2D plane
1/2 comes from the ratio of the principal plane and Z measured from Fc.
If Z is at say, 40 units away, and principal plan is 10 units away, then the ratio is 1/4.
So y & x will be 1/4 of Y & X respectively on your 2D plane
That should be intuitive. The farther things are the smaller they look.
>>13345022>how nearer things will look bigger, in front and so onYou come up with a scheme that draws the farthest things first, then draw the nearest things over it.
