Hitomezashi (一目刺し) is a type of pattern of Sashiko -- a Japanese style of embroidery. It is primarily done through sewing short running stitches over a draw grid to produce various geometric patterns. This app is intended as a tool for visualizing and generating templates for Hitomezashi patterns that you can print and use as a stitching guide.
A pattern is a comma-separated list of positive numbers, e.g. 3 or 5,3,3,5. Each number is a group size. Within each group, edges alternate filled / unfilled starting from the group's first edge. These numbers determine the geometry of the resulting pattern. Feel free to play around with different settings!
When Symmetric is on, one pattern applies to both horizontal and vertical edges. Turn it off to set a Vertical Pattern and a Horizontal Pattern independently — e.g. V: 3 and H: 5 for mixed stitch patterns.
When Tile is on, the pattern fills the entire canvas. When off, a Repeats count limits how many full pattern cycles are drawn per line, producing a bounded motif in the top-left corner of the grid.
3 for the classic interlocking-square look.3,4, for asymmetric patterns.