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DoRayMe
=======

A Quick and dirty raytracer.


This raytracer is made following the book 
"[The Ray Tracer Challenge](https://pragprog.com/book/jbtracer/the-ray-tracer-challenge)" by Jamis Buck.

It is writen in C++ with no STL and use [LodePNG](https://github.com/lvandeve/lodepng) to output PNG file and use them 
as texture, also use [NanoJPEG](https://keyj.emphy.de/nanojpeg/) to use jpeg file as texture, and can use use 
[Lua 5.3](https://www.lua.org/) for 3D pattern definition and more to come on the Lua side later..


Examples outputs
----------------

#### From chapter 05 - Sphere intersections:
![Chapter 5 rendering test](output/ch5_test.png)

#### From Chapter 06 - Phong shading:
![Chapter 6 rendering test](output/ch6_test.png)

#### From Chapter 07 - World / Camera / Scenes:
![Chapter 7 rendering test](output/ch7_test.png)

#### From Chapter 08 - Shadows:
![Chapter 8 rendering test](output/ch8_test.png)

#### From Chapter 09 - Planes:
![Chapter 9 rendering test](output/ch9_test.png)

#### From Chapter 10 - Patterns:
![Chapter 10 rendering test](output/ch10_test.png)

#### From Chapter 11 - Reflections, Transparency & Refractions:
![Chapter 11 reflections rendering test](output/ch11_reflection.png)

###### Bonus: Zooming on a reflective ball:
![Chapter 11 zooming on a ball](output/ch11_zooming_on_reflective_ball.png)

###### Zooming on a reflection on that ball:
![Chapter 11 zooming on a reflection](output/ch11_reflection_on_ball.png)

![Chapter 11 refraction rendering test](output/ch11_refraction.png)

![Chapter 11 rendering test](output/ch11_test.png)

#### From Chapter 12 - Cubes:
![Chapter 12 rendering test](output/ch12_test.png)

#### From Chapter 13 - Cylinders:
![Chapter 13 rendering test](output/ch13_test.png)
###### Bonus:
![Chapter 13 cone test](output/ch13_cone.png)

#### From Chapter 14 - Groups & Bounding boxes:
![Chapter 14 rendering test](output/ch14_test.png)

#### From Chapter 15 - Triangles, Wavefrom OBJ files - Smooth trianges:
![Chapter 15 Triangles and teapots](output/ch15_teapot_objfile.png)

#### From Chapter 16 - Constructive Solid Geomety:
![Chapter 16 CSG](output/ch16_test.png)

#### Bonus (from the forum):
[Merry Christmas](https://forum.raytracerchallenge.com/thread/16/merry-christmas-scene-description)
![Merry Christmas](output/christmasball.png)
(about 1min render time using OpenMP on a 2.6Ghz Core i7 3720QM)

#### Bonus chapter - Soft shadow / Area light
###### Without jitter:
![Area light without jitter](output/arealight_test_nojitter.png)
###### With jitter:
![Area light witht jitter](output/arealight_test.png)

#### Bonus chapter - Texture mapping
###### Spherical mapping:
![Spherical mapping](output/uvmap_checkeredsphere.png)

######Planar mapping:
![Planar mapping](output/uvmap_checkeredplane.png)

###### Cylindrical mapping:
![Cylindrical mapping](output/uvmap_checkeredcylinder.png)

###### Aligncheck plane:
![Aligncheck plane](output/uvmap_aligncheckplane.png)

###### Cubical mapping:
![Cubical mapping](output/uvmap_checkeredcube.png)

###### Image mapping:
![Image mapping](output/uvmap_earth.png)

###### Skybox:
![Skybox](output/uvmap_skybox.png)