shape_hemisphere: Hemisphere
In oganm/rdog: R port of the zdog pseudo-3D rendering engine

Add a hemisphere to an illustration

shape_hemisphere(rdog = NULL, id = NULL, diameter = 1,
  height = diameter, width = diameter, quarters = 4,
  color = "#333", stroke = 1, fill = TRUE, closed = TRUE,
  visible = TRUE, backface = TRUE, front = c(z = 1), addTo = NULL,
  translate = c(x = 0, y = 0, z = 0), rotate = c(x = 0, y = 0, z = 0),
  scale = c(x = 1, y = 1, z = 1))

`rdog`	rdog object to add the shape to. Can be a character if called from a code block in shiny
`id`	id of the shape. If NULL, a random id will be assigned
`diameter`	Diameter of the circle
`height, width`	Height and width of the base circle.
`color`	Color of the shape. A color string.
`stroke`	Width of the shape line. 0 will make it invisible
`fill`	Logical. Fill the inner shape area
`closed`	Logical. Should the first point and the last be connected
`visible`	Logical. Is the shape visible.
`backface`	Logical. Should backface be visible or a color string to set a different color
`front`	Determine where the front of the shape is to decide rendering backface color. A vector with named x, y, z elements.
`addTo`	Id of the parent object. If an rdog object is piped and addTo is set to NULL, the default parent will be the illustration itself.
`translate`	Position relative to the origin. Origin point is defined based on `addTo` parameter. A vector with named x, y, z elements.
`rotate`	Set rotation. Unit is radians. Use with `pi` constant. A vector with named x, y, z elements.
`scale`	Scale dimensons. Can be an unnamed integer or a vector with named x, y ,z elements