The operation process of constructing irregular shadows with geometric sketchpad

Geometry Sketchpad is a powerful drawing software that can be used to create various complex graphics. Among them, making irregular shadows is a relatively common requirement. PHP editor Apple brings you the operation process of constructing irregular shadows with the geometric sketchpad to help you quickly master this technique.

1. Use the ruler segment tool to make line segment AB, select line segment AB, click [Construct] - [Midpoint] to get midpoint C, select point C and point A in sequence (note the order), select [Construction]——[Construct a circle using the center of the circle and the points on the circle] to make a circle C.

2. Select point A and point B, select [Construction] - [Construct a circle with the center of the circle and points on the circle] to create circle A.

3. Select point A and line segment AB, select [Construction] - [Perpendicular Line], the perpendicular line intersects circle A at point D, select points A and D, and select [ Construction] - [Line Segment], select the vertical line and press [Ctrl H] to hide it. Select the line segment AD, select [Construction] - [Midpoint] to get the midpoint E, select point E and point A, select [Construction] - [Construct a circle with the center and the points on the circumference] to create a circle E.

4. Select circle E, select points A and D in turn, select [Construction] - [Arc on Circle], select the arc, select [Construction] - [Inside the Arc] 】——[Inside the sector].

5. Select circle A, select points D and B in sequence, use the same method to construct the inside of the fan, select the inside of the fan, right-click, select [Color], and change the color to red.

6. Select circle C, then select points A and B in turn. Use the same method to construct the inside of the fan. Select the inside of the fan, right-click to change the color to white, then right-click to select properties, and then Set the opacity to 100%.

The above is the detailed content of The operation process of constructing irregular shadows with geometric sketchpad. For more information, please follow other related articles on the PHP Chinese website!