Draw Polygon

Function Description

The Polygon command creates a polygon. Polygons mentioned here include Arbitrary Polygon, Regular Polygon, Orthogonal Polygon, etc. Polygon is one of the most commonly used surface objects, which is often used to represent closed surface objects, such as administrative areas, soil, vegetation, lakes and so on. It can also represent some special surface feature types in geography, such as islands, rings, enclaves and so on.

Function entrance

  • Object Operation tab-> Object Drawing group-> Face drop-down box-> Polygon.

Operating instructions

Draw Polygon by entering coordinate values

The process of Draw Polygon is shown in the following figure:

Press and hold the Q key to Draw Polygon, as shown in the following figure:

Draw Polygon by length, angle,

  1. On the Object Operation tab, in the Object Drawing group, click the Face Drop-down Button and select the Polygon (Length, Angle) option.
  2. Move Stop by Mouse to Map, and you can see that the coordinate value of the point will be displayed in real time in the following parameter box as the mouse moves. Enter the coordinate value of the first node on the polygon in the box (you can switch between the two Parameter Input boxes by pressing the Tab key) and then press the Enter key to determine the starting position of the polygon.
  3. Move the mouse, and you can see that as the mouse moves, the length of the line connecting the mouse position and the previous control point and the included angle between the line and the positive direction of the X axis will be displayed in real time in Map. Type the length value and angle value in the Parameter Input box (you can press Tab. Toggle between the two Parameter Input boxes), press Enter to execute the input, and determine the drawing of the first segment line of the polygon.
  4. Enter the distance (length) between the next node and the previous node, and the angle between the connecting line and the positive direction of the X axis (you can switch between the two Parameter Input boxes by pressing the Tab key), and press the Enter key to Draw the next segment of the Polygon.
  5. Repeat the above steps to continue Draw Polygon with other segments.
  6. Right-click to end the current drawing operation.

Draw a Regular Polygon

The drawing process of Regular Polygon is shown in the following figure:

Specifies the center point of the Regular Polygon Specify the length and angle of the Regular Polygon Graph of Regular Polygon results
  1. On the Object Operation tab, in the Object Drawing group, click the Polygon Drop-down Button and select the Regular Polygon option.
  2. The Parameter Settings dialog appears, where you enter the number of edges of the Regular Polygon to be drawn. The number of edges of the input Regular Polygon is required to be greater than 3. The default number of edges is 5.
  3. Move Stop by Mouse to Map, and you can see that with the movement of the mouse, the coordinate value of the mouse position will be displayed in real time in the following parameter box. Enter the coordinate value of the center point of the Regular Polygon in the box (you can switch between the two Parameter Input boxes by pressing the Tab key), and then press the Enter key to confirm.
  4. Move the mouse again and enter the radius (length) of the Regular Polygon's circumscribed circle and the angle (angle) between the radius of the Regular Polygon's circumscribed circle and the direction of the horizontal axis in the following Parameter Input box, and press Enter. Finish drawing the Regular Polygon.

Automatic surface construction (surface drawing)

The drawing process of automatic surface (drawing surface) is shown in the following figure:

  1. On the Object Operation tab, in the Object Drawing group, click the Polygon Drop-down Button and select the Auto Surface (Drawing Surface) option.
  2. Draw a face that intersects an existing face object, and the closed area formed by the face and the common edge is the new face object

Automatic surface generation (line drawing)

The automatic surface (line) drawing process is shown in the following figure:

  1. On the Object Operation tab, in the Object Drawing group, click the Polygon Drop-down Button and select the Auto Surface (Drawing Surface) option.
  2. Sketch lines intersect with existing face objects, and the enclosed area formed by the lines and common edges is the new face object