For example, we need to draw two cylinders of different thickness, ie, different diameters. and one cylinder is located above the other. Do, for example, design a bottle. To do this we need a center line. If the bottle is, then this line will be vertical. Draw a vertical line. Draw a rectangle (the main part of the bottle) so that this line is in the middle. Draw another rectangle (neck) smaller, so that the center line was held in the middle.
Now you need to draw the ellipse 4 – top and bottom of each rectangles. It becomes something more like a bottle. Or, here's another version of the constructive image. If you draw a bottle in the long term, so as to look at her side and a little on top. How, then, create constructive drawing? First draw is not two rectangles, and two four-sided prism of which then get 2 of the cylinder. Clearly, a first prism – basic. Next on the bottom and top planes of the prism conduct diagonal – we get two points. Connecting these points – we get an average axle.
This axis will help us build correctly yet another perspective from which you create a cylinder of the bottle. Placing one prism to another, we construct two cylinders. After that, the rounded corners, attach credence to this design the bottle. You can create not only the design of simple objects such as dishes, furniture, and animals and even humans. Despite the complexity of the structure human or animal – we can find in these simple geometric body – cylinders, prisms, cubes, spheres, etc. Just to learn constructive picture – you see, as it were, through and through – to see what is in that we draw. Volumetric thinking start to develop with an ordinary cube – draw it on paper. That, anyway, the foundation – it is from this beginning a constructive pattern. Cube presents us with three dimensions of space – width height and depth. The latter, ie the depth – an illusion, since the depth we can not be on the plane of the sheet. Here are some examples of practical construction. Learn them, and then take a simple one or two subject, and try to analyze – from which they are composed. Next, draw a "skeleton" or structure of these objects.