[Jeezus]

i've only ever learned really simple 1 and 2 point perspective drawing techniques in my high school art classes.. i was wondering what the correct way of making cylinders with 1-point perspective is. it's fairly easy with 2-point, because the bottoms and tops of cylinders are just squashed half-circles (i think :P).. but with 1-point, the circle needs to be skewed. so, if anyone is willing to give me a quick 1-point perspective 'advanced' drawing lesson, it would be appreciated. thanks

[amnesia]

No one answered. What a bummer.


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,.-="`AmnesiA`"=-.,

[spooge demon]

Don�t know if this is what you are after.


Draw a square, draw your VP. Trace back corners. Draw back wall. Find middle of faces by drawing lines along diagonals. Trace the intersection in the middle of the faces back to VP. Where your midpoints are tangent to the edges of the cube, your ellipse will touch the edge. So now you know where the corners are, the widest point and narrowest point (called major and minor axes) so you can now draw in your ellipses.

Note that the major and minor axes are always at 90 degrees. If the ellipse is the wheel of a car, think of the minor ellipse being the axle. The major axis is then just drawn perpendicular. Easy!

[spooge demon]

Ps there is inherent distortion in 1 pt perspective, the farther off the center of vision you go, the worse it gets. You can see it in the ellipse on the left. If the major axis is the widest point, why is the widest point not on a line that is perp to the minor axis? It's a plot, I tell you.

[amnesia]

Thanks spooge. I new if I got this msg back the top someone would answer it

Seeing as it's of interest to me as well.



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,.-="`AmnesiA`"=-.,

[Chapel]

I just use an oval templet for perspective circles. You can get them from an art store or where ever you get drafting supplies. When I'm painting I just try and get close... not exact.

[Frost]

Which reminds me of a small game engine I had made for Glide (3dfx), which was that very same, single perspective side scrolling style. Screenshots here: [url=http://www.dsuper.net/~frost/artwork/3D%20Research%20(GLIDE%20Frustos)/]xxx[/url] (yes, I did this while I was working at Ubi Soft, therefore the logo ).

(Oh, besides the perspective depth distortion, it also had dynamic lighting, light halos (and lense flares ), particle fire, scrolling sky texture, and, blah... no one really cared.)

Eh. It just seemed to fit the topic. =) I suck. I should post less crap. Sorry.

frost.


[This message has been edited by Frost (edited May 08, 2000).]

[Jeezus]

ah thanks spooge, that was exactly what i needed. also, thanks again to sc00p, who gave me a quick lesson without the technicalities