Using these lines, we can create accurate perspective in a painting. they are drawn on the top and bottom horizontal edges of an object, along the object and then extended to the horizon line. what rule of perspective is this?

Question: Using these lines, we can create accurate perspective in a painting. they are drawn on the top and bottom horizontal edges of an object, along the object and then extended to the horizon line. what rule of perspective is this?

One of the most important skills for a painter is to create a realistic sense of depth and space in their artworks. To achieve this, they need to understand and apply the rules of perspective, which are based on how our eyes perceive the world. In this blog post, we will explain one of the basic rules of perspective: the orthogonal lines.

Orthogonal lines are imaginary lines that help us create accurate perspective in a painting. They are drawn on the top and bottom horizontal edges of an object, along the object and then extended to the horizon line. The horizon line is the level where the sky meets the ground, and it represents the eye level of the viewer. By using orthogonal lines, we can determine the size, shape and position of an object in relation to the horizon line and the vanishing point.

The vanishing point is the point on the horizon line where all orthogonal lines converge. It is also the point where objects appear to disappear or vanish from our sight. The vanishing point can be anywhere on the horizon line, depending on where we place our object and how we angle it. For example, if we place an object directly in front of us, the vanishing point will be in the center of the horizon line. If we move the object to the left or right, the vanishing point will also shift accordingly.

The rule of perspective that uses orthogonal lines is called one-point perspective, because there is only one vanishing point on the horizon line. One-point perspective is useful for drawing simple scenes with objects that face us directly, such as buildings, roads, railways, etc. It creates a strong sense of depth and distance, as objects appear smaller and closer together as they recede towards the vanishing point.

To draw using one-point perspective, we need to follow these steps:

1. Draw a horizontal line across your paper or canvas. This will be your horizon line.

2. Mark a point on the horizon line. This will be your vanishing point.

3. Draw a rectangle or square on your paper or canvas. This will be your object.

4. Draw two orthogonal lines from the top and bottom corners of your object that meet at the vanishing point.

5. Draw two more orthogonal lines from the other two corners of your object that meet at the vanishing point.

6. Erase or fade out the parts of the orthogonal lines that are behind your object.

7. Add details, shading and color to your object and background as you wish.

You have now created a realistic painting using one-point perspective and orthogonal lines. You can practice this technique with different objects and scenes, and experiment with different positions and angles of your object and vanishing point. Remember to always keep your orthogonal lines parallel to each other and perpendicular to the horizon line, and to make your object smaller and closer together as they get farther away from you.