fixed rotation issues + updated readme

rustitch/README.md

@@ -4,7 +4,9 @@
 [![docs.rs](https://img.shields.io/docsrs/rustitch)](https://docs.rs/rustitch)
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](../LICENSE)
 
-A Rust library for parsing **PES embroidery files** and rendering stitch data to images.
+A Rust library for parsing **embroidery files** and rendering stitch data to images.
+
+Supported formats: **PES**, **DST**, **EXP**, **JEF**, **VP3**
 
 Part of the [stitch-peek-rs](https://git.narl.io/nvrl/stitch-peek-rs) project.
 
@@ -14,18 +16,24 @@ Add `rustitch` to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-rustitch = "0.1"
+rustitch = "0.2"
 ```
 
 ### Generate a thumbnail
 
 ```rust
+// PES files (backward-compatible API)
 let pes_data = std::fs::read("design.pes")?;
 let png_bytes = rustitch::thumbnail(&pes_data, 256)?;
 std::fs::write("preview.png", &png_bytes)?;
+
+// Any supported format
+let dst_data = std::fs::read("pattern.dst")?;
+let png_bytes = rustitch::thumbnail_format(&dst_data, 256, rustitch::Format::Dst)?;
+std::fs::write("preview.png", &png_bytes)?;
 ```
 
-### Parse and inspect a design
+### Parse and inspect a PES design
 
 ```rust
 use rustitch::pes::{self, StitchCommand};
@@ -61,15 +69,39 @@ let png_bytes = rustitch::render_thumbnail(&resolved, 512)?;
 std::fs::write("large_preview.png", &png_bytes)?;
 ```
 
+### Format detection
+
+```rust
+use rustitch::format::{self, Format};
+use std::path::Path;
+
+// Detect from file extension
+let fmt = format::detect_from_extension(Path::new("design.jef"));
+assert_eq!(fmt, Some(Format::Jef));
+
+// Detect from file content (magic bytes)
+let data = std::fs::read("design.pes")?;
+let fmt = format::detect_from_bytes(&data);
+assert_eq!(fmt, Some(Format::Pes));
+```
+
 ## Supported formats
 
-**PES** (Brother PE-Design) embroidery files, versions 1 through 10. The PEC section containing stitch data is consistent across versions.
+| Format | Manufacturer | Colors | Notes |
+|--------|-------------|--------|-------|
+| **PES** | Brother PE-Design | Embedded (PEC palette) | Versions 1-10 |
+| **DST** | Tajima | Default palette | 3-byte bit-packed records |
+| **EXP** | Melco/Bernina | Default palette | Simple 2-byte encoding |
+| **JEF** | Janome | Embedded (Janome palette) | Structured header with color table |
+| **VP3** | Pfaff/Viking | Embedded (RGB) | Hierarchical format with per-section colors |
+
+Formats without embedded color info (DST, EXP) use a default palette of 12 high-contrast colors, cycling on each color change.
 
 ## How it works
 
-1. **Parse** the PES binary header to locate the PEC section
-2. **Decode** the PEC stitch byte stream (7-bit and 12-bit encoded relative movements, jumps, trims, color changes)
-3. **Resolve** relative movements into absolute coordinate segments grouped by thread color, using the 65-color Brother PEC palette
+1. **Detect** the file format from magic bytes or extension
+2. **Parse** the format-specific binary encoding into a common `StitchCommand` stream (stitch, jump, trim, color change, end)
+3. **Resolve** relative movements into absolute coordinate segments grouped by thread color
 4. **Render** anti-aliased line segments with [tiny-skia](https://github.com/nickel-org/tiny-skia), scaled to fit the requested size
 5. **Encode** as PNG with proper alpha handling