When drawing in perspective, parallel lines of objects directed in any one direction converge at one point. When looking at things from a two-point perspective, when we look at them from a certain angle, we can see parallel lines of objects moving away from us in two horizontal directions. For the correct image of contours, you need to know several patterns and techniques.
It is necessary
- - drawing paper;
- - pencil;
- - eraser;
- - a box without a lid.
Place an empty rectangular box without a lid at a sufficient distance (about two meters) in front of you. Let's call this a setting, the composition of which is a box lying on a certain plane. Draw it using the angular perspective method.
Determine the lines of the plane on which the box lies and mark them on a piece of paper. Also, by looking at the setting with the box, determine where the horizon line is in relation to this plane, and draw it on the drawing. The horizon line is always located at the level of the painter's eyes.
Mark two vanishing points on the horizon. Continuing mentally the horizontal parallel lines of the box in your setting, determine their location first visually, and then apply them to the drawing in the form of dots or small strokes.
Draw a line for the front edge of the box closest to you. To do this, correlate its location with the imaginary horizon line (how much higher or lower it is) and transfer this ratio to the picture
Connect the ends of the vertical segment representing the front edge of the box to both vanishing points with auxiliary straight lines. Draw only by hand, the use of a ruler is unacceptable, as this is not a drawing, but a drawing
Now draw the other two visible edges of the box with strictly vertical lines, placing them between the converging construction lines. Observe the proportions of the depicted nature, using the eye: determine how much the front rib is shorter (or longer) than those ribs that are located horizontally. You can also use a pencil for this purpose in an outstretched hand: mark on it with your finger the size of the front edge and visually “measure” the rest of the box with it
Go to the designation of the back, invisible edges of the box. Connect both vertices of its left edge to the right vanishing point, and the vertices of its right edge to the left. The vertices of the back edge of the box will be located at the intersection of these new lines. Also in the figure, its upper edge was formed
Connect the resulting intersection points with a vertical line. Make sure it's really at right angles to the horizon. If this is not the case, then you need to adjust the previous constructions so that the back edge of the box does not have the slightest tilt
Clean up the drawing by carefully erasing the excess construction lines with an eraser. Refine the lines of the plane on which the box lies using the described method.