Cone 3D Model

Cone 3D Model

cone_mesh(
  start = c(0, 0, 0),
  end = c(0, 1, 0),
  radius = 0.5,
  direction = NA,
  from_center = FALSE,
  material = material_list()
)

Arguments

start

Default c(0, 0, 0). Base of the cone, specifying x, y, z.

end

Default c(0, 1, 0). Tip of the cone, specifying x, y, z.

radius

Default 1. Radius of the bottom of the cone.

direction

Default NA. Alternative to start and end, specify the direction (via a length-3 vector) of the cone. Cone will be centered at start, and the length will be determined by the magnitude of the direction vector.

from_center

Default TRUE. If orientation specified via direction, setting this argument to FALSE will make start specify the bottom of the cone, instead of the middle.

material

Default material_list() (default values). Specify the material of the object.

Value

List describing the mesh.

Examples

if(run_documentation()) {
#Generate a cone
generate_cornell_mesh() |>
  add_shape(cone_mesh(start = c(555/2, 20, 555/2), end = c(555/2, 300, 555/2),
                      radius = 100)) |>
  rasterize_scene(light_info = directional_light(c(0.5,0.5,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .

if(run_documentation()) {
#Generate a blue cone with a wide base
generate_cornell_mesh() |>
  add_shape(cone_mesh(start = c(555/2, 20, 555/2), end = c(555/2, 300, 555/2), radius=200,
                      material = material_list(diffuse="dodgerblue"))) |>
  rasterize_scene(light_info = directional_light(c(0.5,0.5,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .

if(run_documentation()) {
#Generate a long, thin cone
generate_cornell_mesh() |>
  add_shape(cone_mesh(start = c(555/2, 20, 555/2), end = c(555/2, 400, 555/2), radius=50,
                      material = material_list(diffuse="dodgerblue"))) |>
  rasterize_scene(light_info = directional_light(c(0.5,0.5,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .