Patent Document ID: 9240063
Application ID: 13469041
Patent Flag: 1

Claim One:
1. A method implemented by a computer comprising: establishing a closest fitting border of a predetermined geometry around a region of a computer generated surface, wherein the region of the computer generated surface is established in dependence upon an event within a digital art software application relating to simulation of an application of a liquid medium to a portion of the computer generated surface and the computer generated surface comprises a plurality of cells; expanding the closest fitting border of the predetermined geometry to form an expanded border by adding a predetermined number of cells around the closest fitting border, each added cell absent application of the liquid medium by the event; establishing within the expanded border a plurality of wet spans, each wet span defined as a continuous series of cells upon which the liquid medium has been applied; generating a data structure for the expanded border, the data structure identifying each wet span by the first cell and the last cell in the continuous series of cells; and generating a revision to the computer generated surface by simulating flow of the liquid medium according to a predetermined flow modelling process within the expanded border in dependence upon at least the data structure.