hair

By Mike Ravella, Brandon Montell, and Andrew DiMarco

Github Repo Presentation

For our project we simulated and rendered hair in real-time. Features are listed below:

Simulation

• Wind and gravitational forces
• Hair collisions with mesh
• Collisions and friction between hair

Generating geometry

• Hairs are generated on the GPU from a small number of simulated guide hairs
• Hairs are turned into billboarded triangle strips
• Many OpenGL techniques used, including tessellation shader, geometry shader, and transform feedback

Rendering

• Shadows using shadow mapping with percentage-closer filtering
• Shadows using deep opacity mapping
• Transparency using depth peeling
• Anti-aliasing using 4-sample supersampling-antialiasing
• Color variation between hairs

User interface

• Interactive adjustment of many parameters
• Scene editor that allows user to draw custom hair placement and combing direction