How to Draw Perfect Cubes in Two Point Perspective
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- Опубликовано: 25 дек 2020
- In this video learn how to create a perfect cube in 2 point perspective! I've seen a lot of videos drawing cubes without using measuring points and this leads to inaccuracy. So, in this video learn how to properly lay out construction so that a perfect cube can be made. As discussed, a singular cube can become a very complex drawing, so it is vital that the first shape be correct in its measurements.
This is part of a larger perspective series so make sure to check out the other videos involved.
Outro Music:
Water Droplets on the River by Kevin MacLeod
Link: incompetech.filmmusic.io/song
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License: creativecommons.org/licenses/b
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Make sure to check out all of the other content provided by the studio! The studio would like to thank the community for all of the continued support and all donations given to our artist. 
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This video was indeed very helpful
Finally! Someone explains this in full and how it works, not just a vague example.
Thank you very much.
This video series is so helpful. It's so strange that none of the perspective books I've ever tried learning from have even mentioned measuring points. It feels like trying to teach someone their times tables without first teaching them how to add. Knowing the fundamental principles makes it all make so much more sense.
So true! I find it odd how few videos actually make mention of this
I've been watching tons of videos and this is the first one that talks about measuring point, instead of just eyeballing or winging the minor axis of an ellipse or the width of the cube ... awesome informative video.
Glad to hear it. Thanks for the support
Thank you for the explanation. It’s really helpful.
❤🔥
I have a question how long exactly must the measuring point be from the Cov along the horizon line
Hi there! The measuring point is the same distance as the station point is from the horizon line
So here’s an example. On the horizon line, if you were to draw a dot as a center point, then draw a line straight down 9 inches. The 9 inch mark at the end of that line is the station point. That means the measuring points should be 9 inches to the left and to the right on each side from that center dot on the horizon line.
In essence, if you connected the measuring point to the station point with a 3rd line (making a right triangle) then it would be a perfect right angle triangle because both points are 9 inches from your center dot. Hopefully that makes sense!
how do you find the placement of the measuring point?
Hello Julia, thanks for the question! The measuring point is the same distance from station point as the vanishing point is from the station point. In other words, if you were to take the line that connects the station point to a vanishing point and lay it flat along the horizon line (or DL depending on drawing) then this would be the measuring point. Hope this helps! Also be sure to watch the first episode in the series as we go over this concept
@@GrasslandsStudio Is the station point always in the exact centre, or is it placed aboce the middle line of the object?
@@no1ofinterst very great question! I’ll be sure to make a video on this. The station point CAN be moved. As long as you follow the same set up you can make many station points across the HL (or DL if that’s what you wish to call it)
@@GrasslandsStudio Sounds good! I did a bit of googling, and it seems to be basically representing the centre of the FOV
@@no1ofinterst yes exactly! You can see how it may be of benefit to you, as well as the limitations in the video I just uploaded
This is one way to use measuring points; although, equally spaced ones make fro a bit boring perspective and it isn't necessary to it that way (some may take it it that it should be always the case, instead of just the easiest example.
This use of measuring points was well known to me, but what I didn't get was -- and my comment might also be of interest to others who wondered as well -- why some authors define the measuring points in the same way as this video (as the distance of the SP to VP, laid out from the VP along the horizon), while other authors (Loomis in Successful Drawing, pp 43-45m where he's talking about using horizontal and vertical scales [aka measuring lines], and Joseph D’Amelio’s Perspective Drawing Handbook where he's talking about dividing a surface (cube face) into equal spaces using a measuring line and a "special vanishing point" - i.e. a measuring point) set it otherwise.
In Loomis' case he says sets it anywhere near the vertical measuring line, either right or left. In D'Amelio's case he shows that it can be anywhere, and that it just changes the horizontal scale, and he shows why it works by looking at the top view of his cube with each of his measuring lines demarcations shown crossing the cube in parallel lines, one of which always crosses the cube at the mid-point of the face of the cube being divided up.
It was hard for me to reconcile the two (it turns out) valid uses of measuring points. I had to turn to a math major who knows projective geometry. There are infinitely many measuring points for each VP. Every direction has a specific vanishing point. Guide lines that have the same vanishing point, correspond to the same direction. You can use any direction for guide lines, because the angle between the guide lines and the object edge only affects the scale.
The videos on youtube (like this one) may imply that there is one correct use of measuring points, but that's not the case. However, it is a valid use of them. The other cases are dependent on use of scales.
Thanks for this. The whole of the video is to show how you can make one cube, because form there you can do anything you want once you have a perfect cube. Through extension and contraction you can move anywhere in space.
I think something really important to note is that this kind of setup is really great for being able to have exact measurements of the objects in your drawing. You can draw in perspective freehand and eyeball things without all this effort if scaling of objects relative to others (feet by feet measurement for example) is not absolutely necessary
Where is the Station Point and why does the Vanishing Points need to be Equal Distance away from it as the Measuring Points are from the Vanishing Points? I don't get it...
Hi! Sorry for the late response! The station point is arbitrary. This is what we draw first. The line that is drawn straight down can be as long as you want, but where the line ends is your station point.
Now, you use a measuring tool to draw straight up to the horizon line in each direction at a 45° angle so that together they make a right angle (as shown in video).
Use a measuring tool to see how long the line is from the station point to a vanishing point (the point at which the diagonal line from the station point hits the horizon line).
This measured distance is how far away from the vanishing point you’ll mark your measuring point. Essentially based off some complex math (of which I’m not advanced enough to help you with), the measuring point has been determined to be equal distance from the vanishing point as the station point is from the vanishing point.
The measuring point makes perspective look believable when it’s used as a reference. That’s why it’s placed where it is. Hopefully that helps!
@@GrasslandsStudio I see... So the Station Point is the Lowest Point in the Video where there is a 90 degree square added to it given the Diagonal Lines that go up to each Vanishing Point.
Does the Station Point have to be in the Center of the Vanishing Points or is that Coincidental?
Also... How do we Prove that this Method actually works for creating a Perfect Cube?
Thanks.
How about cuboid ?
For cuboid you’ll want to follow the same initial setup, but measuring points aren’t as important. With a cuboid the vanishing points are really all that matter because you’re not trying to make a cube that is equal on all sides. You can really just decide how long or wife or tall you want it to be without doing every step..
HOWEVER, if you want to be to measure that cuboid relative to other objects, you can simply follow the rules of extending out planes (see my other video). Start with the cube and then change the length, width, height to what you desire
What is the theory behind the measuring points? I know that you mentioned in a comment below that it is the same distance from the station point to the VP, placed horizontally, but what is the actual concept behind it?
This is a really difficult question to answer but I think you have to look at it from the station point’s mechanics. We know that 90° gives us our set up for our vanishing points. We know that our cone of vision is limited to about 60° and we know that our station point is where the viewer is standing. In order to make properly measured items, the measuring point has to be equidistant to the station point because all perspective is relative to the station point. As the station point moves (the viewer) the perspective needs to be redone. Everything is dependent upon the viewer. Somehow through geometry and mathematics we figured out that the station point being replicated across the horizon line (measuring points) would give us the proper measurements of objects relative to their irl measurements (hence a cube being capable of being subdivided to 2 feet measurements perfectly). It’s about replicating your measurements of objects close to the station point off into the distance while maintaining accuracy all the way to the horizon line. I would recommend looking up more info since my memory is a bit hazy on the exact reason.
How about drawing it at different angles than 45 degree do you still make the T shape same way etc ? I want to be able to draw cube correctly in terms of measurements at any angle how do I do that ?
If you want to do a 45° switch then what you can do is subdivide the faces of the cube. Then draw a line down the middle of each face. Connect the tops and bottoms of all lines and your cube is rotated.
@@GrasslandsStudio I meant looks at cube from different angles not just straight at the edge of it. Can you do a wideo on that ? Is there a generic method that can be used for any angle ?