How to understand projections in sketches

A projection can be understood as the dark side of a background object.

The closer you get to the projected object, the deeper it gets, and the farther it goes. The projection shape under strong light is the shape of the projected object, the outline is relatively clear, and the depth gap is relatively small, which is very easy to describe; Multiple projections are produced under natural light (astigmatism) because the light source is in different directions, and the projection will also spread in different directions from the junction of the projected object and the background, and the more overlapping, the deeper it becomes.

The projection is not a black color, but the content of the background, including the shape (such as the folds of the interlining), the color (such as the wood grain), and the smooth and rough texture. The edge of the projection should be clearly represented, depending on the direction of the light source and the shape of the object. The place close to the object is clear and slowly blurred.

Projection is more used to set off the edge and spatial order of the object (the projection of a near object can contrast strongly with the object). At the same time, the projection with changes can enrich the picture, if the projection is the same, the overall picture is very dull and lifeless.

Projection is the image formed by light projection objects, the shape of the projection is related to the shape of the object itself and the angle formed between the light and the object, and the depth of the projection chromaticity is directly related to the intensity of the light.

The sketch factor of the object.

1. Highlights. 2. Intermediate color.

3. The boundary between light and dark.

4. Reflective. 5. Projection.

Highlights and mid-colors belong to the highlights.

The boundary between light and dark, reflection, and projection belong to the dark part, and the reflection is generally darker than the intermediate color.

Objects that are soft, rough in texture, and not strong in their own refraction, the contrast between the five tones is relatively flat. The contrast between the five tones of objects such as glass and shiny metal is more obvious, and the reflection is also large.

First of all, from the physical aspect, the projection in the sketch is actually a shadow formed by the light source being partially blocked by the object.

In terms of sketching, in fact, projection plays more of a role in holding up the responsibility of the main depiction of the object. No matter how well an object is portrayed, it will not be real without projection. And when you draw a projection, you should pay attention to the fact that the projection also has its shape, its outline, its depth, and its relative position to the subject.

For the projection, there are also changes in the virtual and real, and the edge of the projection, if you observe carefully, will also be light and heavy, generally near the real and far virtual. It needs to be seen on a case-by-case basis. If you still don't understand, you can ask me.

Start by observing the direction of the light source.

The direction of the light source is easy to understand, that is, the direction from which the light is coming from. Shadows appear in the opposite direction of the light.

The second is the softness and hardness of the light quality.

Hard direct light creates shadows with clear edges, and soft scattered light creates shadows with blurred edges.

As a sketch exercise, a combination of soft and hard light is generally used, and the projection edge is clearer near the bottom of the still life, while at a distance from the still life, the projection edge is deliberately blurred in order to express a sense of space.

The color of the projection is also the closer to the bottom of the still life, the heavier, the farther away from the still life, the greater the influence of ambient light, and the lighter the projection.

The closer the projection is to the object, the more solid it is (the drawing is heavier), and then it slowly changes from deep to shallow, and the lines can be relaxed at will. The lines should not be painted, and the intersection of the two lines should not be perpendicular as much as possible. The most important thing is to be patient and draw patiently one at a time.

It should also be noted that the first time the line is arranged, try to be as thin as possible.

The projection is also reflective. The projection of an object is actually a gradient. From the deepest at the root of the object, to the shallowest at the end of the projection.

The junction of the projection and the object is where the color of the entire projection is heaviest, decreasing from the root of the projection to the end. This is also the meaning of the edge line of the projection, which is gradually shallower. In fact, you can do this, when you draw the projection, the shape of the projection, after the gradient is drawn.

Card one card at the root of the projection will do. If you don't understand, you can continue to ask!

Put the real thing in a closer look, and you'll find the trick.

1. First draw a square and divide it into four parts.

2. Draw the diagonal line of the square, and divide a section on the diagonal that is the same length as the side length of the quarter small square, and connect the parts with the same radius with an arc to draw the shape of the circle. Later, when you are proficient in drawing circles, you can skip this step.

3. Erase the unwanted auxiliary lines and gently draw a line between light and dark.

4. Start near the boundary between light and dark, and start the line with the light line at both ends and the heavy in the middle.

5. Continue to arrange the lines in this way, sweep out the bright side, dark side and gray side, and finally draw the projection after the overall adjustment.

2. Draw sketch shadows:

In the final analysis, sketching is the process of capturing the shadows of light on objects with brushstrokes on the picture, and finding the "three sides" (light, gray, and dark) and the "five tones" (highlight, light, gray, dark, and reflective).

The tone of drawing geometry and still life is relatively simple, as long as you find the boundary between light and dark, see clearly the reflection of the backlight, and distinguish it with black, white and gray.

The light is taken down. The part of the object that blocks the light is projected into a projection. The part of the projection that connects to the object is solid. Slowly becoming weaker. It can be ground by hand after the soft lead cable is arranged.

The light is projected from that side to that direction, and in one direction, the shadows are deeper than the shadows, the shadows are deep in the near area, and the shadows in the distance are lighter. The edge of the box that has a shadow is heavy and then lightened, and if it is excessive, it is gone.

The place close to the subject is deep and slowly becomes shallow, and it is actually very simple to draw the past

Summary. <>

Hello, dear, it is a pleasure to serve you, through the official query to show that the projection of the art image refers to the noun explanation of the basic projection of art Projection noun explanation: in the geometry of painting, the shape of the object is projected onto a surface with a set of imaginary rays to obtain the figure. This polygon is called a "projection polygon"; The light rays are called "projection rays, pro-<>

What is the projection of an art image?

Hello, dear, it is a pleasure to serve you, through the official query to show the projection of the image of the art refers to the noun explanation of the basic projection of the art projection noun explanation: in the geometry of the painting of this boy, the shape of the object is projected onto a surface with a set of imaginary rays to obtain the figure. This surface is called "projection surface Qi Zheng"; The light rays are called "projection rays, pro-<>

Fine art generally refers to the creation of art that occupies a fixed plane or space and has visibility. It is divided into many kinds, and generally the round finch includes four major categories: painting, sculpture, design, and architecture.

Some modern scholars also classify others into the category of Souameng, such as calligraphy and photography. The term "fine art" first appeared in Europe in the 17th century, and some people believe that it officially appeared in the mid-18th century.

When painting, pay attention to light and shadow, both real and virtual. It can bring out the object.

First of all, you have to understand whether a painting is good or not, it all depends on the three major relationships of black, white and gray, and at each level, you need to understand the later painting, and when painting shadows, remember that the painting is too dead, and when you are generally painting, you should put down the painting for a period of time, and look at the overall relationship Blindly sitting and drawing, you can't find out if there is a problem, and when you paint, the best lines can be arranged relatively neatly, and then add layer by layer, so that the overall effect is that the whole painting is breathable, and it will not be stuffy and dead.

1.The projection shape of any object with the same density of each part can never be faithful to the original form.

2.Through shadows, we can feel the general outline of an object, but we cannot understand its internal details.

3.Darkness is the absence of light, and shadow is the relief of darkness and light, and the depth or shallowness of shadow depends on the degree to which darkness and light improve each other.

If you can figure out and understand the above points, I think it will be helpful for the relationship between shadows and objects and how to represent the relationship between them.

The intersection of the projection and the object is the darkest part of the picture, and it can be gradually faded backwards, and it can blend with the back, the lining is digging, and the painting is alive.

The projection plays a foiling role, the place close to the object is deep, the place of the principle object is shallow, and finally dissolves in the background, and it is enough.

Deal with the big deal first! Local post-processing.

It should be transparent, not dead black. Pay attention to the relationship between the virtual and the real.