Wanted: Very Simple 3D system

[PhilOfPerth]

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All a bit above me, but just curious: is the .7 (in line 15) sqrt(2)/2, by any chance?

.7 came from vince

hello B+,

there are two options, the easiest is parallel projection and the trickier but more realistic one is perspective projection

say you have 3D coord variables x, y, z and you wish to convert them to 2D coords, lets call them p, q

for parallel:

p = x + 0.7*z
q = y + 0.7*z

where 0.7 is a kind of arbitrary number which you can mod until it looks right

But Phil if you were thinking a parallelogram to represent the square base of a pyramid with one angle at 45 degrees such that the sin 45 = cos 45 = SQR(2)/2 = .7???,  I see where you are coming from ie, "isomorphic projections" for isometric drawings.

Erm, yeah, that's what I was thinking!