How do you draw a cube in a sketch? How to draw a sketch cube to get started

First, use a pencil to make a shape, and express the shape of the cube in a straight line, paying attention to the perspective relationship.

Determine the relationship between light and dark of the cube, represent the dark part and the projection line, and pay attention to the neat and uniform line.

Then you can arrange the background picture around the cube to help close the shape and highlight the three-dimensional sense of space of the cube.

Use the wipe tool to blend and precipitate the lines in the early row into the picture, and by the way, you can also gently wipe out the gray tone of the cube.

Finally, the details of the cube are depicted in depth, and the cube picture is neatly arranged, so that the effect of the picture will be very beautiful.

1 Each side of the cube represents a face, and the transition of each side of the gypsum geometry is very direct, but at the same time, each side should not be one-size-fits-all, but should be interspersed with virtual and real, so that it is natural, and more observation. 2 Get the perspective right.

First of all, let's take the cube as an example, and the cube painting has problems with two-point perspective and projection.

Let's talk about perspective first, the black line in the middle is our eye level, and the line that is parallel to the eye level is visually parallel to the horizontal line, and the line that is not parallel to it will eventually visually compare to a point when it is parallel. Visually, it is large and far away.

In a two-point perspective, the black line in the middle is our eye level, and the line that is not parallel to it will end up visually comparing to the two points when it is parallel. One point and two points are related to the position of the cube, and you should be able to understand it according to these two diagrams.

Taking the plaster above as an example, his perspective relationship is like this in the following figure.

First, the first is the composition of the shape (HB or 2B), find the highest point, the lowest point, the left, the most right and the angular point of the cube, according to the figure, you can see that the cube is in a rectangle, the vertical is a little longer, the horizontal is a little shorter, the left and right are parallel, the highest point and the lowest point are basically in a straight line. Generally, when drawing this, you should circle the cube in a rectangular box, and then divide the sides of the rectangle according to the position of the corners of the cube in a proportional way, and this proportion is based on your own visual perception. Just find the dot and connect it.

Generally, when composing and taking shape, the way to hold the pen is the arm movement method.

Use your entire arm to line up your entire arm to create long straight lines. At the beginning, the line may not be straight and standard, so you don't need to pay too much attention to it at the beginning, and you have to have an adaptation process to start drawing arms and wrists, and practice slowly.

Draw the position of the projection, because the light is parallel, so there will be a parallel relationship when drawing the projection, you can see it by drawing the two corners of the original object and the two corners of the projection with a pen and drawing it, and draw this relationship when drawing. In this way, the shape is set, and the excess lines are wiped off, and those that are not visible are erased.

2. Dark Side and Projection Paving (4b, 6b, 8b).

Use the side peaks of the pencil to line diagonally, and then line the line along the dark side parallel. Note that the front is real and the back is imaginary, and the middle is the vertical line of light and dark junction.

The force is evenly arranged twice again, the direction keeps up with the previous time and there must be a sense of crossing, do not form a 90-degree angle, each time the line is in the same direction as far as possible, and the line is called a row by row. Deepen the junction between the projection surface and the object. Take out our toilet paper and fold it and wipe it for the first time, in one direction, don't repeat, it's easy to make the picture look dirty.

The 8b pencil is then replaced with the usual pencil holding method, and the shorter lines are connected to the dark side to pave again. Draw again with a 2b pencil and deepen.

The method of gray and dark side lines is the same, but it does not need to be laid so many times.

Some small details, this plaster is broken, you need to use the tip of the eraser to rub out such a gap, and use a pencil to fill these small facets. Finally, there is the highlight, which may not be very obvious at the junction of the gray and bright surfaces, so pay attention to the depiction.

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How to draw a sketch cube for novices.

1. The business position is fuzzy and finalized. Faced with a blank piece of paper, how to draw the object in the most appropriate position must first have a vague positioning, similar to a sketch. The principle of composition follows the principle of "the sky is thin and the ground is thick, and the left and right are balanced".

2. Observe carefully and determine the line accurately. According to people's visual habits, it is easy to grasp the vertical lines with the gaze, followed by the lines that are close to horizontal, and then the lines that are slanted in space.

3. Use rational observation methods, first determine the line close to the horizon, and assume that there is a horizontal line below the line with the line of sight, so that you can know the inclination of the line, and you can also hold a pencil to compare, first determine the middle one, and draw the other two, you must pay attention to the perspective relationship of the three lines, and at the same time draw these three lines, you can draw the last three lines accordingly, so that you can compare with each other until the shape is finally determined.

4. In order to make the form more rigorous, we can use the observation method of dialysis imagination to draw the three lines on the side that we can't see.

5. Completion of structural sketching: In order to make the picture look richer, use light and shade to draw a layer of gradient tones between the dark side and the projection, and pay attention to the relationship between the light and heavy lines. The structure of a cube is finished.

6. Composition and shape: according to the method of structural sketching, draw the shape of the cube, pay attention to the three-point perspective of the three faces, when drawing, the lines can be lighter, according to the observation of light and shadow sketches, there are some edges and corners that are the highlights of the cube, if the painting is heavy, it can not be brightened.

7. Pave up the tone: use the pencil side of 4B, in the form of a line to lay out the dark side of the cube, projection, background, pay attention to the gradient relationship between them, but also pay attention to the difference in tone between them, obviously, the projection is the blackest, the dark side is second, the background is relatively weaker, let go of the boldness, drastic drawing, the details do not need to be considered.

8. Blur the tone: There is an uneven phenomenon in the tone laid out with a pencil, and furthermore, the tone of the dark side itself should be blurred, so you can use a pen and paper towel to knead the tone into the paper. The final result is a tone that seems to be attached to the form.

9. In-depth shaping: Use a 3B2B pencil to continue to go deeper on the basis of the previous step, first of all, the tonal contrast of the three major sides of the cube is clearer, each side has to gradually become clearer, the projection continues to deepen on the basis of the previous step, the background draws the relationship between the inside and the plane, and draws some simple cloth lines.

10. Continue to go deeper: Use a harder pencil to make the picture richer. The layers are more distinct, and the sense of wholeness is stronger.

Monarch Fine Arts Sketch Geometry Sketch Introduction to Sketching Cube.

How to draw a cube in sketch geometry.

The cube is the most basic form of geometry and is also the object of sketching when you are new to sketching. Learn the cube to master the basic rules of two-point perspective.

Tools Raw materials.

Sketch paper, charcoal or pencil.

Gypsum geometry or geometry**.

Artboard Method steps.

Draft: Use a hard charcoal pen or a pencil with a small number of b. First, use a straight line to gently mark the approximate position of the top, bottom, left, and right, and pull out a long straight line to connect them to determine the basic shape of the cube.

Add dark sides and drop shadows: Use a 6B pencil or soft charcoal pen to quickly draw the dark sides and drop shadows of the cube.

Further open the relationship: Deepen the bottom of the cube to open the virtual and real relationship between the dark side and the projection. Draw the gray side of the cube. Line up some lines in the background.

Adjust the picture: Adjust the whole picture, pull away the black, white and gray, and deepen the background. Use a small b-number pencil or hard charcoal to express a shiny finish.

Detail: Paint some of the broken areas on the cube. At this time, sharpen the tip of the pen and choose a pencil or charcoal with a small number of b. You can deepen the line between the cube and the bottom, and strengthen the solidity of the cube.

1.The cube is in kind.

The real thing is a cube with interlining, and the light source shines down from the oblique top, making the relationship between black, white and gray clear.

2.Cube shape structure.

The following figure shows the structural relationship of the cube, and understanding the structural relationship is of great help to the accurate drawing later.

Draw steps. 1.Construct a frontal state survey.

Consider the composition and determine the position of the cube in the frame. Observe and compare and analyze the proportions of the structure as a whole, draw the basic shape with a light long straight line according to the proportional relationship of the cube, and pay attention to its perspective relationship.

2.Contour. Starting from the three-dimensional space of the cube, the structure of the cube is further analyzed. Use the lightness, weight, thickness, and virtuality of the lines to express the connection between the structure of the body.

3.On the chiaroscuro.

Under the action of light, from the overall relationship between light and dark, the bright side of the light and the dark side of the backlight are clarified. Starting from the boundary between light and dark in the cube, lay the dark side and shadow, so that the picture shows a large relationship between light and dark.

4.In-depth portrayal.

On the premise of grasping the overall relationship between black, white and gray, the in-depth depiction is carried out from each part of the cube, and the closed gray tone of the background is drawn, so that the black, white and gray layers of the picture are richer, the relationship between virtual and real is clearer, and the sense of space is stronger.

5.Adjust the relationship between the big silver eggplant.

From the overall tonal relationship, an accurate shape is shaped, so that the relationship between black, white and gray is clear, the tone is unified and harmonious, and a strong sense of volume and space is expressed.

6.The end result.

Under the premise of meticulous depiction and adjustment of the relationship between light and dark at any time, the picture finally achieves the effect of harmonious tone, accurate modeling, vivid depiction, rich and delicate expression.

Step 1: Draw a cube shape and find the boundary between light and dark and the projection. Pay attention to the "perspective ratio" of the cube, the relationship between the virtual and the real of the light and dark boundary lines, and the relationship between the front and back of the projection lines.

Step 2, draw the dark projection, pay attention to the point, pay attention to the change of the surface when laying the dark projection, near the real and far virtual, the front of the projection is heavy and the back is light, and draw a gradient.

Step 3, rub the dark projection with a paper towel, and bring out the gray surface at the same time, pay attention to rubbing the weight first and then rub the light, and control the change of the weight of the previous painting.

Step 4: Draw the bright side, wipe out the highlights, add some small details, and add a heavy background to set off the object to enhance the picture effect, and then adjust the picture slightly to finish.