The first pic shows how a texture can be scaled, rotated and moved on a wall. The next picture, showing sort of a casket illustrates the selection outline formed after cutting the cells. A wall was cut into smaller walls and an outline was formed around each wall piece then all outlines were merged together. A single mouse click selects all walls red so a texture could be assigned to them all. With a second click, individual wall is highlighted in green and user can manipulate it. More than one green wall can be selected so user can manipulate all green walls at once. The wall manipulations are done in real time for fast visual feedback. The snow pics show how a wall can be cut and textured in sections.