csg_combine {rayrender}

CSG Combine

Description

Note: Subtract operations aren't commutative: the second object is subtracted from the first.

Usage

csg_combine(object1, object2, operation = "union", radius = 0.5)

Arguments

object1

First CSG object

object2

Second CSG object

operation

Default 'union'. Can be 'union', 'subtract', 'intersection', 'blend', 'subtractblend', or 'mix'.

radius

Default '0.5'. Blending radius.

Value

List describing the combined csg object in the scene.

Examples

if(run_documentation()) {
#Combine two spheres:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="union"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Subtract one sphere from another:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="subtract"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Get the intersection of two spheres:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="intersection"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Get the blended union of two spheres:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="blend"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Get the blended subtraction of two spheres:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="subtractblend"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Change the blending radius:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="blend", radius=0.2),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Change the subtract blending radius:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(x=-0.4,z=-0.4),
     csg_sphere(x=0.4,z=0.4), operation="subtractblend", radius=0.2),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(sphere(y=5,x=5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-3,5,10))
  }
if(run_documentation()) {
#Get the mixture of various objects:
generate_ground(material=diffuse(checkercolor="grey20")) %>% 
  add_object(csg_object(csg_combine(
     csg_sphere(),
     csg_box(), operation="mix"),
  material=glossy(color="dodgerblue4"))) %>%
  add_object(csg_object(csg_translate(csg_combine(
     csg_box(),
     csg_torus(), operation="mix"),z=-2.5),
  material=glossy(color="red"))) %>%
  add_object(csg_object(csg_translate(csg_combine(
     csg_pyramid(),
     csg_box(), operation="mix"),z=2.5),
  material=glossy(color="green"))) %>%
  add_object(sphere(y=10,x=-5,radius=3,material=light(intensity=10))) %>%  
  render_scene(clamp_value=10,fov=20,lookfrom=c(-15,10,10))
}