Course Calendar: https://groups.csail.mit.edu/graphics/classes/6.837/F04/calendar.html
The folder includes the following, which are downloaded from the Course website
1.Lecture Note
2.Original Assignments, including PDF task requirement and supporting code.
With the help of the Open Course, I have the experience of writing a ray tracer using C++, including ray casting, normal visualization, rendering, voxel rendering, supersampling and 3D OpenGL visualization. It is also a part of MIT6.837 assignment.
Throughout the process, I implement two kinds of cameras, orthonormal and perspective camera respectively. In addition, several types of primitive objectives are built, e.g. sphere, triangle, plane, triangle mesh, just to name a few. On top of that, Composite design pattern is used for creating 3D objects hierarchy with transformation. Several Light effect is implemented.
Even though there is plenty of obstacle finishing the task (like the use of depreciated GLUT library), lots of interesting things are learnt.
Folder .vscode(i.e., settings.json, launch.json, tasks,json and c_cpp_properties.json) helps build and compile the C++ program. What's special is that it also keeps Vscode occupying tiny amount of space on PC compared with other IDE. Command-line could help build the project efficiently.
Self-similar fractals (a subpart of the object is similar to the whole)
Barnsley fern\dargon\X\Triangle\Levy
IFS Function
A glimpse of it ⬇
Sphere-Ray Intersection-(Geometric/Algebraic)
Orthonormal Basis - from Linear Algebra
C++ Object Oriented Programming
A glimpse of it ⬇
scene1_07.txt sample output is wrong
（Use scene1_08.txt，camera center 0,0,2 instead）
Proved by linking two sphere functions, which turn out to be an oval on plane XOY.
NormalVisualization/ DiffuseShading
Perspective Camera
New primitives- Planes & Triangles
Affine Transformations
A glimpse of it ⬇
"-shade_back" to be updated. ✅ Done on Assignment4
OpenGL API - 3D Simulation
Sphere Tessellation & Gouraud interpolation
DirectionalLight
Specular Color
A glimpse of it ⬇
Guidance:
Within the real-time interface
Calling the render function by pressing 'r'.
The application can be terminated by pressing 'q' or calling exit().*
*Adjustment
Some head files in ray folder is being cut to Object3D folder.
Codes have been revised.
Command Line Argument: in/... out/...
Set the vertex normal before specifying each vertex position
Blinn-Phong Model the exponent->100 (nonlinear relationship)
Shadows Reflection & Refraction
OpenGL API Representation
PointLight
A glimpse of it ⬇
*Adjustment
Tessellation args can be controlled by Command Line Arguments.
On Main.C
a new pointer to SceneParser -> no need for function arg
-> openGL rendering enabled. (camera adjusted)
On raytrace.h
main loop raycasting has been transferred here.
Bounding boxes for Primitives
Sphere voxelization
Regular grid data structure
Grid::paint()-Two Ways to previsualize
Fast ray-grid intersection
Transformation:Flatten the Transformation Hierarchy
A glimpse of it ⬇
Updated: extern.h
Using Ray-Box Intersection From Ray Casting II
Guidance: a single ray is traced by pressing the 't' key.
Then the 'g' key will toggle between\
(1) visualizing all occupied grid cells
(2) visualizing the cells traversed while walking along the ray
& (3) the faces crossed to enter each cell along the ray.
RAY TRACING STATISTICS
Grid Acceleration
Solid Textures
CheckerBoard, Perlin Noise, Wood, etc
A glimpse of it ⬇
Tips: All related line-arguments should be declared
(No longer in Assignment 7 Fixed by removing ~ delete m on Grid and Object3D class)
*Adjustment:
delete box; //no []
pixel->width, height
Several new base and derived Class
Class Film, Sample
Class Sampler: - random/uniform/jittered samples
Class Filter: -box/tent/gaussian filter
Reference: Fundamentals of computer graphics-(2009) Ch9 SignalProcessing
A glimpse of it ⬇
*Adjustment:
Revise use of grid and visualize_grid
Tips: All related line-arguments should be declared
(No longer in Assignment 7 Fixed by removing ~ delete m on Grid and Object3D class)
A NEW Chapter
*Notice that .C = .cpp (at least in VScode)
From Assignment3 onwards, include the below header Files on Mac instead.
#define GL_SILENCE_DEPRECATION
// Defined before OpenGL and GLUT includes to avoid deprecation messages
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#include <GLUT/glut.h>
In task.json
"-framework" ,"GLUT"," -framework", "OpenGL"
Add glutInit(&argc, argv); in main
change glEnable() etc after glutCreateWindow("OpenGL Viewer");
*Adjustment
In addition, some head files in ray folder is being cut to Object3D folder.\
Codes have been revised.
Using my code (on Mac Clang++)
Note that you should open the Myproject folder,
/lib contains vector-matrix-image header files or .C
/ray contains the other.
You should replace four files in .vscode (in Myproject folder) with those from each corresponding .vscode-assignment*(0-9) (in assignment folder).
.vscode-assignment*(0-9) is used for coding via the Myproject folder.
*In assignment 0, there are two ".vscode" folders
.vscode-assignment0 is used for coding via the Myproject folder.
.vscode-inside is used for coding via the assignment0_Barnsley fern folder.
DO NEED to include everything from lib folder.
Try doing it yourself.