The construction begins with an arbitrary triangle. The tiling reflects the triangle about each of its three sides. Each of these triangles is then similarly reflected times to fill up the whole plane, where is specified by the "tile image area" slider. The points of the triangle can be changed by dragging in the image area. Clicking close to one of the vertices causes that vertex to relocate to the mouse position; dragging the vertex causes the triangles to continuously resize. Increasing the jitter slider adds a random value to each point in the construction for a more organic feel.