[kdeezy]

Hi,

Been lurking around this forum since i was about 12 years old, i am now 18 and looking @ the works of the people here have been really inspirational, But enough blabbering,.

I am doing a futuristic hanging city as a art project and well i am having problems with the perspective . I really cant say what it is so i decided to finally post here.




any help would be much appreciated.

Thanks.

[faeklone]

I don't see any major problems with teh perspective myself. And kudos to you for using 3-point perspective. If anything I'd say the largess of the building on the right hand side is disrupting the flow of the picture. It's drawing your eye more than the other things in the picture would, and I think the other things are far more interesting than that building.

Keep going and see what happens. That's why you sketch before you do, to work out the basic flow of things in perspective and technicially before you go and make a final piece.

Anyway, keep up the work.
_________________
"It's not the tools you use but how you use them that counts."

[kdeezy]

Thanks man,

as for that big ass building on the right i was well trying to convey a sense of size, but i see your point it does take away from everything else. Ill change that up somewhat.


Thanks again for the reply.

[kdeezy]

ok well i began colouring it so here it is.

[faeklone]

the colouring is looking good, however, I think I see now where your drawing was a bit off. if all these strucktures are perfectly square and in line with one another, using 3 point perspective all the lines should be lining up with one of the points. At the moment they're not. If the big ass buiding I was talking about before was in line with the rest of the buildings to the left, then you should be able to draw a straight line from one building to the next and hit the exact same line from building to building. At the moment I don't think that there's two of them that line up.

Remember, since you're seeing it from an angle that is using 3 point perspective, any line that is going away from one of the perspective points is in parrellel with the other points. This is why usually you have a maximum of 3 perspective points. Try drawing a cube out of 3 point perspective and you'll see what I'm getting at easily.

Since your vanishing points are off the page, it may have been, or may still be a good idea to skech it out with a paper and pencil. You can always print off your darwing, tape it to a board or a pice of cardboard, and then mark off the vanishing points and then take a ruler to it.

Sorry I didn't see any of this the first time, but after you add color, those errors become more apparent.
_________________
"It's not the tools you use but how you use them that counts."

[kdeezy]

as u see im not an expert on perspective or anything but if each of those buildings of those buildings have different heights than the bottoms wouldnt or shoulding line up?

also are just the front buildings not lining up or is it the ones in the back aswell?

[kdeezy]

as u see im not an expert on perspective or anything but if each of those buildings of those buildings have different heights than the bottoms wouldnt or shoulding line up?

[Affected]

The way you've drawn the buildings now, they seem to get narrower further up. As faeklone said, all of the long sides should be converging on one vanishing point if this tapering is not wanted.

[kdeezy]

could you rephrase that?

The way im looking @ making this is well the viewpoint is from slightly under these buildings and well my thinking is since its goin up and away from the viewers eye that shouldnt it taper in slowly?

[faeklone]

This is a basics on perspective then. These 3 drawings are all of a cube, done looking at it in each of the seperate ways of viewing perspective.

One Point Perspective

This is achieved in this case by having a horizon line and a single point that represents your vanishing point. You make your cube by making a square, placing it where you want it, then draw out perspective lines form the vanishing point to connect to the corners of your cube. The back of the cube is made by using a smaller square. In this example, of the x, y, and z coordinate available in 3D space, only the Z co-ordinates are changing.

Two Point Perspective

This is achieved by making a horizon line, and then placing a verticle middle line for where the middle of the cube will sit. Making perspective lines crossing over at a point along the line going up and down allow you to make the sides for that, and then adding a couple of verticles lines along side of the cube define the sides. In this example, of the x, y, and z coordinate available in 3D space, the Y and Z co-ordinates are changing.

Three Point Perspective

This is achieved by taking a vanishing point, I chose the top one, and allowing 3 lines fro each of the sides of the cube to be pulled out. They are somewhat the same degree from the middle point. Next, the two side points are pulled out to cross-over similar to 2 point perspective. The bottom is made by taking perspective lines and running them from the right hand side, to the left hand side of the drawing and vice versa. In this example, of the x, y, and z coordinate available in 3D space, ALL of the co-ordinates are changing.


Remember though that perspective lines and vanishing points refer to things that in reality are parrelel to each other. There's 12 lines that make up a cube, of those 12 there are 3 pairs of 4 lines that are parrelel to one another. That's why 3 point perspective can be used on a cube.

As for your drawings if you add another cube of exactly the same size, or even a rectangle shape starting around the same size beside it, using the perspective lines and craeating new ones, there will be a taper as it goes up, but it will still follow the lines into the vanishing points regardless of how big it is, rectangle or cube.


Hope this helps you in some way, or helps someone else out.
_________________
"It's not the tools you use but how you use them that counts."

[Affected]

kdeezy: yes, they will appear to taper upwards, but not arbitrarily. Each of your buildings now has a separate vanishing point where they should all use the same one.

see:


I wasn't sure if the rightmost building was meant to align with the other buildings on the left, I left it like it is.

[kdeezy]

Aight, heres a questions say they dont have the same vanishing point........ or is that not possible?


heres what i did last night


The point of view i chose ....... or wanted to is well pretty damn awkward.


If i could ask u guys for a favour, could u save the pic and go to PS and flip it upside down, just to see if it works, personally it looks and makes much more sense when i flip it upside down.

[Affected]

all lines that are parallel to each other - such as I assume the sides of the buildings here are supposed to be WILL converge on a single vanishing point. If they do not, you get results that look wrong, like here it looks like the tops of your buildings are thinner than the bottoms.

and it does seem to make more sense upside down, but I think that's just psychological - the brain is more accustomed to seeing buildings grow up out of the ground or whatever than dangling from the sky. The perspective problem is still there whichever way you look at it.

think about it this way: how did you decide how much and in what way the buildings would "taper" off to the distance. If your answer doesn't involve deciding on a vanishing point and ensuring the sides converge on that, there's your problem.

[kdeezy]

Affected, i really appreaciate ur insight on this, very helpful, while at school i re-drew what i had from memory and what u said really made sense there.


Perspective is something i never really had a very good understanding of, so thanks for the help.

[kdeezy]

one last question,

Im wondering would u say a shorter building have the same vanishing point to the right or left as a taller one?

[Affected]

in brief: yes.
if the sides are parallel, the vanishing point is the same.