Interface is smooth transition of one line to another. Interface are very often applied on various drawings at connection of corners, circles and arches, straight lines. Creation of section — quite difficult task which performance from you will require knowledge of certain drawing rules.
It is required to you
- - compasses, pencil, eraser;
- - paper.
Instruction
1. There is a set of types of interface, for creation of each of which there are certain rules. The simplest is interface of a right angle. For creation of this type of interface put a compasses leg in top of a right angle and carry out the arch crossing its parties. After that, using these points of intersection as the centers of circles, carry out two small arches. Find a point of intersection of these arches - it will be the center of interface. Put a compasses leg in this center and carry out the arch connecting sides of angle the smooth line.
2. For creation of interface of an acute angle choose two any points on each its party. Using compasses, construct four small arches of these points. After that connect in pairs these arches the line having with them only one general point that is construct two tangents to them. Find a point of intersection of these tangents which will be the center of interface. Construct the arch connecting sides of angle of this center, having used the same radius, as at creation of the first four arches. For creation of interface of an obtuse angle use the same method.
3. To construct interface of direct parallel lines, construct the piece perpendicular to them. From the points of this piece which are on these lines carry out arches, having used the radius which length will be more than a half of distance of the constructed perpendicular. These arches form the figure similar to the ellipse flattened on each side. Connect points of intersection of these circles, thereby receiving the center of interface (a point of intersection with a perpendicular). Using compasses, from the received center carry out the arch connecting two straight lines.
4. Using above-mentioned instructions, it is possible to create the general algorithm of creation of interfaces: 1) find and specify interface points; 2) find the center of interface; 3) draw interface.