Lesson 2: Contour Lines, Texture and Construction

2:06 PM, Sunday June 14th 2020

Drawabox Lesson 2 - Album on Imgur

Direct Link: https://i.imgur.com/qmKqM9O.jpg

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Hope this link works for the whole album. Imgur confuses the hell out of me ( as well as not liking big png files one bit ).



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7:45 PM, Sunday June 14th 2020

Starting with your arrows, you're definitely drawing them with a good sense of flow and fluidity, but I do feel that most of these do not demonstrate a very good use of perspective. There's a little more of it in the second page, but the first page definitely lacks depth. Remember that as the ribbon moves away from the viewer, two thins will occur:

  • The ribbon itself will get narrower

  • The distances between the zigzagging sections will get tighter

Moving onto your organic forms with contour lines, you're doing a pretty good job overall. You're sticking to simple sausages as instructed, and your contour ellipses are drawn quite confidently, so as to maintain even shapes. While I'm glad that you're drawing through your ellipses, as you continue forwards, try to limit yourself to just drawing through them two full times before lifting your pen. There are times where you draw through them 4 times and sometimes more, and this can cause us to lose track of the specific ellipse we're trying to draw. This will likely also help with your accuracy, as you do still struggle with getting them to fit snugly between the edges of the form.

For your organic forms with contour curves, your work here is largely looking good - still drawing the contour lines confidently, keeping them snug between the edges of the form, and showing a good grasp of how the degree shifts as we slide along the length of the sausage, and so on. One minor point I wanted to mention however was that you should always take advantage of the opportunity to add a little contour ellipse along the tips of the forms that are facing the viewer. Remember that contour curves aren't really different from contour ellipses - it's just that we're only drawing the lines where the surface is actually visible to the viewer (instead of doing so with x-ray vision as we do with the contour ellipses). As shown in the lesson, this means that if the entirety of a contour ellipse would be visible to the viewer, you can draw it in its entirety.

Your work on the texture analysis exercises is coming along well. You're doing a good job of focusing entirely on the use of shadow shapes rather than lines and outlines, and it's definitely yielding good results. The only issue I'm noticing is that as you move towards the far left side of your density gradient, you need to push yourself harder to let those shadow shapes actually swell and grow bigger, so you can actually blend more seamlessly with that heavy black bar along that side. Similarly, as you move to the right, you need to let those shadow shapes shrink and disappear in order to blend with an imaginary bar of pure white along the far right side. You're doing everything correctly to allow yourself to do this, but you appear to be holding off from that last step of actually making meaningful shifts in your textures' density.

For your dissections, you do take a bit of a step back in one way - specifically, you rely much more on outlining your individual textural forms. For example, with your old tiled roof, you tend more to enclose each individual tile, instead of allowing for any sort of transition in density. I talk about this issue in these notes. Reading through that should help.

As a whole, you are still demonstrating good attention to detail and strong observational skills.

Moving onto your form intersections, you've done a good job of drawing these forms such that they feel cohesive and consistent within the same space. Do be sure to draw through all of your ellipses here however, so as to help you maintain a confident execution and even, smooth shapes when drawing them. You've also got a good start on your intersections - it's expected that there will be plenty of room for growth here, as we're merely introducing the concept of defining the relationships between our forms in 3D space. This is something we'll continue to explore throughout the rest of this course, especially as we delve into constructional drawing.

There are a couple things from the instructions for this exercise you did appear to miss, however:

  • You were instructed to avoid forms that are overly stretched in any one dimension (like longer cylinders), and to stick to those that are closer to the same size in all three dimensions.

  • You neglected to construct your cylinders around central minor axis lines as shown in the diagram for this step of the demo.

Be sure to follow the instructions a little more closely in the future.

Lastly, you're doing a good job with your organic intersections. You've established how the forms interact with one another in 3D space, rather than as a series of flat shapes stacked on a page, and you're also demonstrating a believable illusion of gravity in most of these, in how they slump and sag over one another. The far left side of this page does have a weird floating form, and you've got one towards the center that has a bit of a gap between it and the one beneath it, but overall you've done a pretty good job.

All in all, your work here is coming along well. I'll go ahead and mark this lesson as complete.

Next Steps:

Feel free to move onto lesson 3.

This critique marks this lesson as complete.
7:58 PM, Sunday June 14th 2020

That was quick. Some of the stuff I had realised in hindsight, such as being too tentative with transition density from left to right etc.

I obviously still struggle with the texture/shadow concept. I think the tiled roof was probably a bad example to work from in the first place though.

There is a lot to keep in your head when doing them, I knew about the overstretched rule but it didn't trigger while I was doing this. The axis thing I had forgotten about completely ( probably cause cylinders haven't really come up yet ).

Will take a break before moving on. Some of this really hurt my head.

Thanks. Colin.

9:07 PM, Sunday June 14th 2020

PS on the texture shadow thing.

Are we creating shadows where we literally seem them on the reference image or are we using some imagination to add, exaggerate under assumed lighting conditions to help define them?

For reference this was the tiled roof. I can see shadows outlining the tiles.


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