This tool allows to visualize the section shape of a cylinder according to the section angle.
Four shapes of section can be found:
The section angle is 0°, the cut is perpendicular to the length of the cylinder. The section shape is then the same as the cylinder base:
The curve() function from Cylinder() object is used with semi_minor_axis = semi_major_axis = diameter / 2.
The section angle is superior to 0°, the cut is made before the cylinder base. The section shape is then an ellipse with a semi_minor_axis equal to diameter/2:
The curve() function from Cylinder() object is used with the relations mentionned above. This is performed with the ellipse_eq() function of Cylinder() object.
The section angle is superior to 0°, the cut is made after and intercept the cylinder base. The section shape is then an ellipse truncated by each cylinder base:
The curve() function from Cylinder() object is used between each vertex following axis x, vertex are linked by a straight line following axis y. This is performed with the trunc_ellipse_eq() function of Cylinder() object.
The section angle is 90°, the cut is parallel to the length of the cylinder. The section shape is then a rectangle with width = diameter and length = cylinder length:
The vertexes are directly linked together with the rectangle_eq() function of Cylinder() object.
