In this article, we will teach you 3 resources to master 3D. The different systems and methods that exist in the three-dimensional drawing, how to represent diagonals, their different angles, etc. It all depends on the scenario, and the point of view you choose. Read on and master this art!
Methods and systems, which you should handle as a draughtsman
As a good draftsman, you must have the best handling of the 3d effect that you can, for that, there are several resources that you must take into account.
Axonometry is a method widely used in architectural renderings, in design, and in some computer games.
To do this three-dimensional work, you will use angles and parallel lines. This case has a great advantage, since it allows you to show a clear view of spaces or elements.
Two main factors stand out in this representation, and the scale of the object represented does not depend on the distance of the viewer (you will always see the same size of the elements, no matter how far away or close) and the lines (or elements), parallel to each other, will be, therefore, parallel in the drawing.
This system called Axonometry encompasses several similar, three-dimensional types, among them, Isometric, Cavalier, Military, etc.
3 Resources to master 3D: Isometric, Cavalier and Military Perspective.
We will emphasize these three, since my goal is that you can understand how they work, and what resources they can bring to your work.
We will not make a too technical review, since, you will only see their functionality and application possibilities. Not working in technical drawing, you can apply this, in a freer way, and take it to where your drawing requires.
These representations will vary according to the angles you use to make the three-dimensional figure. Depending on the way you combine these, the angle from which the viewer observes it will vary.
These three angles are represented as a Y, where each direction has an angle of 90° with any of the others.
On a flat sheet, you can only represent height and width, since the depth would go to the inside of the sheet. Therefore, you can use this resource to modify the angles and rotate this three-dimensional figure.
Represent diagonals, define the main directions.
You can represent diagonals, but first, you will have to have the main directions well defined.
Isometric: The three angles represented are 120°.
Cavalier: You will have angles of 90° (usually for the front face), 45° and 135° (90 + 45 = 135).
Military: This case, is a derivation of the previous one. The representation will be rotated with respect to the sheet. Instead of having lines parallel to the edges of the sheet, these will have an angle of 45°.
Regarding the angles, there are two versions, in one they are the same as in the cavalier representation, 90°, 45° and 135°. The other version is 90°, 120° and 150°.
Something important to keep in mind in these representations is that the angles should add up to 360° to cover the whole spectrum of possible directions.
Logically, each drawing you make will have its reason and its space, but so will the scenery and the point of view you choose.
In this representation, by not having the reduction in size, you can show wide spaces without losing information. In this way, we give a general view, from a wide distance. It is not advisable to abuse this resource, since it will limit our power of representation.
As we could observe during the article, there are many resources, methodologies and systems to achieve a three-dimensional drawing, but if you pay attention to the mentioned resources, you will undoubtedly have an advance in your three-dimensional artistic process.