MyRayTracer

INSTALL

• download SDL and SDL_ttf .dmg from official site
• mount .dmg and copy .framework folder to ./libraries
• make

EXECUTE $ ./raytracer

IDEAS

• Pre-projection to determine pixels needing a ray before radiation
• oriented object (ex with plane, visible on one side not on the other)
• Photon Mapping
• Bump Mapping (Perlin)
• Voxel (3D Grid)
• scene description file
• use cuda computing
• use SIMD
• use MPI

Voxels must be used in an intersection tree The voxel tree has a root voxel, each tree node has exactly eight or no child

TODO

• check if default copy ctor/operator can copy array member otherwise transform array members into array<type, n> => after verification it seems that simple array members are deep copied by default, ok but strange no ?
• move Vector/Point to macros, see if Matrix can be moved too
• handle refracted ray when coming out from refracting object, what is outside n?
• implement scenario programming (ex: load scene + wait 2 sec + move ...)
• implement "include" syntax in json to include scene parts
• strange illumination when punctual light is very near a surface

some triangles are flat shaded on shadow edge : image 1456688795 - called terminator problem in http://geekshavefeelings.com/x/wp-content/uploads/2010/03/Its-Really-Not-a-Rendering-Bug-You-see....pdf - it is not a bug - this is due to the way shadow rays are traced - shadow rays start from the intersection point which is on flat triangles - then ray cannot reach the light since curvature is not interpolated, only normals ? is there a way to interpolate curvature based on triangle normals to correct this refs: https://people.mpi-inf.mpg.de/~rzayer/pappe/PG04.pdf http://www.ijesit.com/Volume%202/Issue%203/IJESIT201303_48.pdf http://www.math.zju.edu.cn/yxn/papers/normalshading.pdf http://ljk.imag.fr/membres/Stefanie.Hahmann/PUBLICATIONS/HB03.pdf ./pdf/201112-Curvature Estimation for Meshes Based on Vertex-Normal Triangles.pdf

AVAILABLE OPTIMISATIONS:

• SIMD computing
• octree containment
• hidden triangles avoiding for meshes
• Sobel edges detection w/ antialiasing

AVAILABLE OPTIONS:

• Phong or flat shading for meshes
• antialiasing