Ask: How to draw an arc with a right-angled trapezoid in cross section through code?
Currently through addpoly; draw the arc structure. Below is the code and graphics
Now the requirements are: the same is arc but I want to change the cross section from rectangular to right-angled trapezoid. How to modify the code? The cross section is shown in the figure below
The slope of the hypotenuse of the trapezoid is a variable that is adjusted by the angle。