sphere: Sphere Object

Description Usage Arguments Value Examples

View source: R/objects.R

Description

Sphere Object

Usage

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sphere(
  x = 0,
  y = 0,
  z = 0,
  radius = 1,
  material = diffuse(),
  angle = c(0, 0, 0),
  order_rotation = c(1, 2, 3),
  velocity = c(0, 0, 0),
  flipped = FALSE,
  scale = c(1, 1, 1)
)

Arguments

x

Default '0'. x-coordinate of the center of the sphere.

y

Default '0'. y-coordinate of the center of the sphere.

z

Default '0'. z-coordinate of the center of the sphere.

radius

Default '1'. Radius of the sphere.

material

Default diffuse. The material, called from one of the material functions diffuse, metal, or dielectric.

angle

Default 'c(0, 0, 0)'. Angle of rotation around the x, y, and z axes, applied in the order specified in 'order_rotation'.

order_rotation

Default 'c(1, 2, 3)'. The order to apply the rotations, referring to "x", "y", and "z".

velocity

Default 'c(0, 0, 0)'. Velocity of the sphere, used for motion blur.

flipped

Default 'FALSE'. Whether to flip the normals.

scale

Default 'c(1, 1, 1)'. Scale transformation in the x, y, and z directions. If this is a single value, number, the object will be scaled uniformly. Note: emissive objects may not currently function correctly when scaled.

Value

Single row of a tibble describing the sphere in the scene.

Examples

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#Generate a sphere in the cornell box.

generate_cornell() %>%
  add_object(sphere(x = 555/2, y = 555/2, z = 555/2, radius = 100)) %>%
  render_scene(lookfrom = c(278, 278, -800) ,lookat = c(278, 278, 0), fov = 40, 
               ambient_light = FALSE, samples = 400, clamp_value = 5)


#Generate a gold sphere in the cornell box

generate_cornell() %>%
  add_object(sphere(x = 555/2, y = 100, z = 555/2, radius = 100, 
                    material = microfacet(color = "gold"))) %>%
  render_scene(lookfrom = c(278, 278, -800) ,lookat = c(278, 278, 0), fov = 40, 
               ambient_light = FALSE, samples = 400, clamp_value = 5)

  
#Add motion blur and show the sphere moving

generate_cornell() %>%
  add_object(sphere(x = 555/2, y = 100, z = 555/2, radius = 100,
             material = microfacet(color = "gold"), velocity = c(50, 0, 0))) %>%
  render_scene(lookfrom = c(278, 278, -800) ,lookat = c(278, 278, 0), fov = 40, 
               ambient_light = FALSE, samples = 400, clamp_value = 5)

rayrender documentation built on April 7, 2021, 5:06 p.m.

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