The first step is to draw a fixed circle O and a line segment DC, where D is the vertex and C is the moving point. Select the "circle tool" in the left column and draw a circle with the center of O on the drawing board; Select the line segment tool to draw the line segment DC, where d is the vertex and c is the moving point.
Step 2: Select circle O and point C, and click Edit-Merge point in the menu bar above to point to the circle, so that point C can always be on the circle when moving.
Step 3: Construct the midpoint of the line segment. Select the selected CD, click "Construction"-"Midpoint" on the menu bar above to get the midpoint of the line segment, and mark the midpoint with the marking tool.
Step 4: Make operation buttons. Choose point c, and be careful not to choose a circle. Click Edit-Action Button-Animation in the menu bar above. In the pop-up dialog box, the speed and direction of movement are the default. Click OK. At this point, there is a button in the workspace. At this time, if you click the button, point C will move on the circle, but point P will leave no trace.
Track the midpoint Use the Move tool to select point P, and then click Show-Track Midpoint on the menu bar above.
Step 6 Click the "Animation Point" button. Obviously, it can be seen that the trajectory of point P is a circle. In the process of moving, you can press the button to stop anywhere, then press it again to start moving again. This is the perfect way to demonstrate animation.
According to the above method, the trajectory of moving points can be made, and the animation method of making points on images is similar. The above tutorial is indexed from:/shiyongjiqiao/dongdian-guiji.html. If you don't understand, you can check the detailed tutorial, hoping to help you.