1.  Field
The following description relates to a method and apparatus for modeling a target object to represent a smooth silhouette. 
2.  Description of Related Art
With respect to a fluid simulation in a computer graphics (CG) area, in particular, in a visual effects (VFX) area, a research for digitizing a fluid movement is still in progress. 
The fluid may be represented in a form of very small particles.  In general, the particles are represented in a spherical shape to visualize the fluid based on the particles.  Therefore, a boundary line and the like of the visualized fluid may be represented unnaturally.