[TheNexx]

Well. it might be pretty stupid question. But I have trouble drawind circles (ovals) in perspective. Is there a rule, like rules of perspective, but for ovals?

[Bugscratch]

Funny you ask this, because I was wondering the same thing
I'm still waiting for my book on perpective though, maybe there'll be a solution in there.

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mailto: [email protected]

"Every intelectual has two countries of origin: His own and Syria."
---Syrian Pavillon @ EXPO 2000 ---

[TheNexx]

Actually I've seen quite a few books on perspective, but non of those had a good explanation about circle drawing in perspective. Im trying to get any proportion formulas, but there are non of I could find

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Dennis Sedov

[Collosimo]

No specila formulas ppl. It is simple.



Hope that helps. Ask for more explanantion if you want more help.

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/COLLOSIMO

[Duckman2]

An excellent book on perspective was written by "Rex Vicat Cole" in the 1930's go do a search on Amazon.com and I'm sure you'll find the book I'm talking about. It's really a great book.

[jzero]

If your vanishing points are far off your paper, then get a bigger drawing board. Seriously. Get your big T-square and track all the way off the page until you hit the horizon line. You DO have a T-square, don't you?

As for cubes, determine where the 'leading vertical edge' of the cube will be (the one closest to the viewer). Draw lines from your vanishing points until they intersect at this edge point. Those lines are the first two sides. Use your vanishing points to draw the top edges, based on your 'leading edge'. the rest is more of the same.

You're one your own for determining what a 'perfect' cube looks like, because unless you know some pretty weird math, you won't be able to mathematically figure out how the edge lengths are distorted by the perspective. But don't worry about that. Eyeballs are very good devices for determining what looks right. If you are still in doubt, consult the real world. Get a cube-shaped object and look at it...

Once you have a cube that looks right, simply draw diagonal intersecting lines across the face where you want to find the center. This is your center point.

If you're still having trouble, go to the library and find a book on basic drawing. They are sure to cover this subject.

[Ben Barker]

quote:

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Originally posted by jzero:

You're one your own for determining what a 'perfect' cube looks like, because unless you know some pretty weird math, you won't be able to mathematically figure out how the edge lengths are distorted by the perspective....

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Actually there is a very easy way to do it (well, somewhat tricky).

Draw your leading edge and vanishing points and stuff:



Then bisect the angles exactly in half and draw lines back. (This is the tricky part):



Draw your back lines based on these lines:



And you have:


OK, well, not good. I should have used a protractor and stuff. But you get the idea.

As for elipses, there is no easy way, unless you get a template. Just practice drawing bottles and stuff.

[edit]

Oh yeah, I figured out all the formulas and stuff for elipses one time. Like if the elipse is one diameter unit away from the horizon, it is one half diameter unit tall (or something like that). In the end it was easier for me to just to draw a square and use that to eyeball it.

[This message has been edited by Ben Barker (edited February 05, 2001).]

[aquamire]

Pimp Daddy Francis Tsai has some cool info on how deep a perfect cube should be, on his website. Im still kinda scratching my head on his instructions, but I'm rather dumb right now. Maybe it'll help yah out. http://www.teamgt.com/forum/cubes01.htm

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-Aquamire
"Quotes are for mislead wussies." - Me.

[TheNexx]

then another stupid question , how to draw a perfect square in perspective? and then determin midle of it?

BTW, When my vanishin pints are far beyon my paper limit, what should i do?

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Dennis Sedov