1. Long-line drawing: the pen tip is slightly tilted to one side or the pen is directly placed on the paper, the pen is put down gently, and the pen is transported quickly in the middle, and it returns to the same trajectory with the pen raised. Note that the arm drives the wrist to move in a unified direction. This line is often used to summarize the shape, which helps to grasp the shape and determine the central axis in drawing, so it is very necessary to practice drawing lines in different directions.
2. Straight line: the pen is light, the middle is heavy, and the pen is light, forming a line with two imaginary midpoints. This kind of line is easy to connect, which is beneficial to show the change of light and shade. Putting pen to paper is simple. Close the pen with a hook, and the tip is slightly straight. Note that such a line will cause obvious interfaces when connecting, and it is also easy to cause confusion of lines. The center keeps the strength even, the pen speed is slow, and the brushwork is restrained and implicit.
3. Curve: the center is set, the pen is curved, and the pen force is light. This line can show a more relaxed effect. The side stroke is light and casual, and such a curve is conducive to expressing the body of wool.
4. Slant line: Hold the pencil with the conventional grip, move the whole arm back and forth 360 degrees, and the little finger can gently press against the drawing board. Finally, draw a diagonal line in space, which is the most difficult to draw, because the lines in space are prone to illusion.
Precautions:
pay attention to
1. When laying cables, the directions should be consistent, and the drawings should be drawn one by one, dense and appropriate.
2, to light up and down, the two ends of the line, the middle is heavy, not Lian Bi.
3. The cable laying direction should properly consider the block structure of the object.
4, dark, to change the direction of the cable, deepen layer by layer, don't scribble.