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berkeley-map

Search a path between two locations in Berkeley

cloth-simulator

In the project, I implemented a real-time simulation of cloth using a point masses and springs system. The cloth is divided into evenly spaced point masses and then connected by springs. The position of each of the point mass is recalculated at each time step based on the external forces. I take three constraints between point masses as STRUCTURAL, SHEARING, BENDING. I then compute the total force acting on each point mass and use Verlet integration to calculate the new position. Later on, I implement cloth collisions with sphere, plane and self collision. Self collision is the hardest part for me through out the whole project. In order to prevent cloth clip through, I implemented spatial hashing to apply a repulsive collision force to point mass if any pair of point masses are too close to each other. The result comes out awesome!

cs184-final-project-proposal

cs61b-homework

cs61b-labs

cs61b-project

cs61c-projects-and-labs

fa15-hw1

Homework 1 for Ruby on Rails Decal Fall 2015

fluid-simulation

We first develop a simple particle renderer with controls. We then attempt to use a particle-based approach to simulate water. The key to simulating any fluid is enforcing incompressibility. Unfortunately, this is computationally expensive. In the paper Position Based Fluids, Muller and Macklin describe a method for simulating fluids in a relatively efficient manner while not requiring impractical timesteps. We attempt to implement the various ideas in this paper such as enforcing incompressibility by incorporating density constraints into Position Based Dynamics, simulating surface tension by adding artificial pressure, and reducing damping by adding vorticity confinement and viscosity.

hw2-sp16

sp16 Ruby on Rails

lecturecode

Code developed in lecture. Starter code if you want to try to do what I did.

mesh-editor

Mesh is made up of many triangles that combined together. It is very amazing to explore how these tiny triangles oriented in different ways can make billions of things! Using halfedge data structure represetation and loop subdivision make it easier to smooth the meshes. I also learned some very cool shading and lighting effects.

pathtracer

In this project, I explored ray generation, ray-scene intersection, acceleration, direct and indirect lighting, and some basic materials. It is very interesting to see different implementations affect the qualities of the image.

proj1

Project 1 for Ruby on Rails Course

rasterizer

In this project, I implemented a rasterizer that allows me to take an image and draw it on a screen by converting it into a raster image with calculating pixel values. It takes a stream of pixels and transforms them into corresponding 2 dimensional points on the screen. I started with points and lines drawing, and then moved on to single-color drawing and transformations Supersampling is used to antialias the rasterized triangles. Barycentric coordinates are calculated to get the appropriate color from the image onto the screen. Second part of the project is about texture mapping. Different sampling schemes are implemented and compared to get a better viewing of the images. UV coordinates are computed to map the corresponding pixels onto a 3D model. Nearest sampling, bilinear sampling, and trilinear sampling are tested to see the results.

ray-tracer

This project is added with more complicated materials, environment lights, and depth of field to your ray tracer. It is very interesting to see different materials applied on the mesh with different lighting effects. Depth of field gives very cool images like using a camera.

sp16-hw2

Homework 2

sp16-hw3

sp16-hw4

text-editor

travelbuddy

travelbuddy2.0

twitter-graph-template

project template for assignment 3

vr-poker

A VR app to control the movement of a deck of 52 cards in different algorithms using OVR and Unity.