# Sprite Segment 3x3grid

Segments a Sprite texture into a 3x3 grid and outputs a pattern of cells matching the...

- Repository: https://github.com/Unity-Technologies/skills (1197 stars)
- Category: Engineering
- License: see repository
- Last updated: 2026-10-30
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add Unity-Technologies/skills --skill sprite-segment-3x3grid -g -a claude-code -y`
Codex: `npx skills add Unity-Technologies/skills --skill sprite-segment-3x3grid -g -a codex -y`
Cursor: `npx skills add Unity-Technologies/skills --skill sprite-segment-3x3grid -g -a cursor -y`
Gemini CLI: `npx skills add Unity-Technologies/skills --skill sprite-segment-3x3grid -g -a gemini-cli -y`

## Description

Segments a Sprite texture into a 3x3 grid and outputs a pattern of cells matching the center cell's color. Use when the user asks to analyze or document a sprite's structure or color distribution.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Sprite Color Grid Analysis

## Purpose

This skill analyzes Sprite textures by segmenting them into a 3x3 grid and outputting a text representation based on color matching with the center cell.

## Parameters

### Match Threshold

The **match threshold** determines what percentage of pixels in a non-center cell must match the center's majority color for that cell to be considered a "match" (`.`).

| Threshold | Description | Use Case |
|-----------|-------------|----------|
| **50%** | At least half the cell's pixels match center color | Lenient matching for sprites with mixed regions |
| **75%** | At least three-quarters match center color | Moderate matching for mostly solid regions |
| **90%** | Nearly all pixels must match center color | Strict matching for very uniform sprites |

**Default**: 75%

## Algorithm

1. **Segment the Sprite**: Divide the Sprite's texture region into a 3x3 grid (9 cells total)
2. **Identify Center Color**: Calculate the majority (most frequent) color in the center cell (position [1,1])
3. **Compare Each Cell**: For each of the 8 surrounding cells, calculate what percentage of pixels match the center's majority color. If the percentage meets or exceeds the **match threshold**, the cell is a match (`.`); otherwise it is not (`X`)
4. **Generate Output**: Create a text representation using the legend below

## Output Legend

| Symbol | Meaning |
|--------|---------|
| `X` | Cell does NOT meet the match threshold (insufficient pixels match center color) |
| `.` | Cell MEETS the match threshold (enough pixels match center color) |
| `*` | The center cell itself (always position [1,1] in the grid) |

## Output Format

The output is a single line with three groups of three characters, separated by ` / `. Each group represents one row of the grid.

**Order**: Top to Bottom rows, Left to Right within each row.

**Format**: `[TopRow] / [MiddleRow] / [BottomRow]`

Each row contains 3 characters separated by spaces: `[Left] [Center] [Right]`

The rest: https://github.com/Unity-Technologies/skills/blob/HEAD/skills/sprite-segment-3x3grid/SKILL.md