C++ implementation with scripting language

Hi,

I wanted to share my C++ ray tracer implementation. The project can be found here github.com/fuersten/sun_ray.
As I don't like yaml and there is no good C++ implementation available, I opted to implement my own scripting language to describe the image generation. Just to give an example how a script looks like, here the file to generate the book cover:



# Generates the books cover image

pi = 3.141592653589

# Camera
camera = Camera()
camera.from = (-6, 6, -10)
camera.to = (6, 0, 6)
camera.up = [-0.45, 1, 0]
camera.field_of_view = pi / 3
camera.horizontal = 1500
camera.vertical = 1500

# World and Lights
world = World()
world.add(Light(Point(50, 100, -50), Color(1, 1, 1)))
world.add(Light(Point(-400, 50, -10), Color(0.2, 0.2, 0.2)))

# Materials
white_material = Material()
white_material.color = Color(1, 1, 1)
white_material.ambient = 0.1
white_material.diffuse = 0.7
white_material.specular = 0.0
white_material.reflective = 0.1

blue_material = Material(white_material)
blue_material.color = Color(0.537, 0.831, 0.914)

red_material = Material(white_material)
red_material.color = Color(0.941, 0.322, 0.388)

purple_material = Material(white_material)
purple_material.color = Color(0.373, 0.404, 0.550)

# Scene
backdrop_material = Material()
backdrop_material.color = Color(1, 1, 1)
backdrop_material.ambient = 1
backdrop_material.diffuse = 0
backdrop_material.specular = 0
backdrop = Plane(backdrop_material).rotate_x(pi / 2).translate(0, 0, 500)
world.add(backdrop)

sphere_material = Material()
sphere_material.color = Color(0.373, 0.404, 0.550)
sphere_material.diffuse = 0.2
sphere_material.ambient = 0.0
sphere_material.specular = 1.0
sphere_material.shininess = 200
sphere_material.reflective = 0.7
sphere_material.transparency = 0.7
sphere_material.refractive_index = 1.5
sphere = Sphere(sphere_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5)
world.add(sphere)

world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3, 3, 3).translate(4, 0, 0))
world.add(Cube(blue_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(8.5, 1.5, -0.5))
world.add(Cube(red_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(0, 0, 4))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(2, 2, 2).translate(4, 0, 4))
world.add(Cube(purple_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3, 3, 3).translate(7.5, 0.5, 4))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3, 3, 3).translate(-0.25, 0.25, 8))
world.add(Cube(blue_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(4, 1, 7.5))
world.add(Cube(red_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3, 3, 3).translate(10, 2, 7.5))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(2, 2, 2).translate(8, 2, 12))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(2, 2, 2).translate(20, 1, 9))
world.add(Cube(blue_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(-0.5, -5, 0.25))
world.add(Cube(red_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(4, -4, 0))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(8.5, -4, 0))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(0, -4, 4))
world.add(Cube(purple_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(-0.5, -4.5, 8))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(0, -8, 4))
world.add(Cube(white_material).translate(1, -1, 1).scale(0.5, 0.5, 0.5).scale(3.5, 3.5, 3.5).translate(-0.5, -8.5, 8))

# Render
measurement = Measurement()
canvas = camera.render(world)
println('Rendered in {}ms', measurement.elapsed_time())
canvas.write('cover_image')