task05

Task05: Fragment Shader Practice (Implicit Modeling, Sphere Tracing)

Deadline: May 23rd (Thu) at 15:00pm

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Before Doing Assignment

If you have not done the task01, task02 do it first to set up the C++ development environment.

Follow this document to submit the assignment, In a nutshell, before doing the assignment,

• make sure you synchronized the main branch of your local repository to that of remote repository.
• make sure you created branch task05 from main branch.
• make sure you are currently in the task05 branch (use git branch -a command).

Additionally, you need to install glfw library. Follow this document to install glfw.

Now you are ready to go!

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Problem 1

1. Build the code using cmake
2. Run the code
3. Take a screenshot image (looks like image at the top)
4. Save the screenshot image overwriting task05/problem1.png

The current code render a cylinder defined by a signed distance function using the sphere tracing technique.

Your following tasks are to perform CSG operation (union, intersection, difference) as the following image.

Figure 1. Let's design an object using CSG modeling.

Problem 2

Write some code (about 5 ~ 10 lines) around line #40 in shader.frag to define the signed distance function resulting from the CSG operation in Figure 1. (The resulting object should be colored in green).

Save the screenshot image overwriting task05/problem2.png

Problem 3

Write some code (about 5 ~ 10 lines) around line #47 in shader.frag to paint the object such that it looks similar to the coloring in Figure 1.

Save the screenshot image overwriting task05/problem2.png

After Doing the Assignment

After modify the code, push the code and submit a pull request. Make sure your pull request only contains the files you edited.