Ang Lee, the Magician >> Projects >> Graphics >>Patina  
       
 

Project 4

Abstract

Implementing the paper "Visual Simulation of Weathering by γ-ton Tracing from SIGGRAPH 2005. The part of patina weathering is implemented.

 

patina weathering. Red dot are γ-ton shot after one spray

 

Links

Movie (3.5MB MP4/ Use quicktime player)
Source code (in C++)
Excutable (interface_description)

Results:

Model used:

52750 Triangles, 26365 Vertices (STL file) 15072 Triangle, 7543 Vertices (STL file)

Source: Hemisphere, 10000 γ-ton shoot per spray.

Source: Hemisphere, 10000 γ-ton shot per spray.

the γ-tons could be shot either toward the center uniformly or toward a random direction whose angle between the vector (center - source) is less than 90 degree.

When hitting at the surface, the γ-ton bounce in a random direction within the hemisphere defined by the normal vector of the hitted triangle.

shows first hit positions with γ-ton shot uniformly.
settled γ-ton shot after 25th spray
after 1 spray
after 25 sprays

 

more results:

 

 

 

Last update: 2005-11-30