1.4.3 - Copy Pieces Between Patterns and Snap to Grid

• Copy a piece in one pattern and paste it into another, also in another browser tab. The pasted piece is standalone with a fixed shape: it keeps its seam allowance, notches and labels, but does not follow the new pattern's measurements or sizes.
• Pieces with darts, and rotated pieces scaled differently across and along, can still only be pasted in their own pattern. You are told when copying.
• Snap to grid in the View menu now works when clicked. It is always listed, and turning it on also shows the grid.

1.4.2 - Edit Imported Notches and Grain Direction

• Select an editable piece's notch reference point to change Notch size directly, including red sliding points without a separate notch endpoint.
• Select several pieces to set their Grain angle together or Reverse grain direction by 180 degrees. The pieces themselves do not move, and grain formulas are kept.
• Make editable preserves the imported piece's current grain direction, including angles set before conversion.
• Fixed and editable pieces can be changed together, with undo and redo for each bulk grain change.

1.4.1 - Preserve Imported Markings and Notches

• HPGL imports retain enclosed dart drawings as non-cutting internal markings.
• Making an imported piece editable preserves open sew-style markings and retraced marks in its sew outline.
• Edge notches drawn out and back inside an imported contour are preserved. Short, straight inward notches become editable notches with their original length; longer and angled cuts keep their drawn geometry.
• Imported notch lengths can be changed in their own Notch size field. Drawn markings do not automatically become drill holes.

Previously lost geometry needs to be reimported from the original file; opening an older saved conversion does not recreate it.

1.4.0 - Pins and Clearer Dragging in 3D

Thank you for the feedback on SeamScape 3D. This release adds two things you asked for and fixes pieces losing their 3D settings. Keep it coming: use Help → File bug report or Help → Feature request.

• Added pins. Right-click the fabric in 3D and choose Pin here to hold that spot where it is while the rest of the piece drapes, for example to stand in for a waistband you have not drafted yet. Pins are saved with the pattern and shown in both 2D and 3D. Right-click a pin to remove it.
• Dragging the fabric while it drapes now shows the spot you are holding and how far around it the fabric is pulled along, in both 2D and 3D.
• Dragging pulls a smaller part of the fabric along, which makes small adjustments easier.
• Fixed pieces with Enable in 3D mode turned off coming back enabled after undo or reopening the pattern.
• Fixed a piece losing its placement on the body and its drape when it was turned off in 3D and on again later.

1.3.2 - Placement of Copied Drafts

• Independent copies of construction geometry with X/Y formulas now stay at their pasted position instead of snapping back to the original location.
• Copied formulas retain their measurement and geometry references without applying the placement offset twice to internal dependencies.

1.3.1 - Notches, Fold Lines and Draft Copying

• Fixed corner notches on mirrored pieces so they follow the selected reference point. Please check existing corner notches if you previously selected a different point to compensate for their placement.
• Fixed selecting lines when adding an internal path to a moved or rotated piece. A mirror line can also be used as an internal fold line.
• Independent copies of construction geometry now retain saved point and curve-handle grading when placed.

1.3.0 - SeamScape 3D Is Out of Beta

SeamScape 3D is no longer in beta. Draping a pattern on a body is now fast, simple and a full part of Pattern Studio. We would love to hear how it works for you: use Help → File bug report or Help → Feature request.

• Added Place on body, which puts every waiting piece on the avatar in one click. It reads where the piece was drafted, its name (front, back, sleeve, collar, cuff, waistband, pocket and more, in several languages) and how the pieces are sewn together. New and mirrored pieces are placed as you create them, and placed pieces fly onto the body.
• Draping now follows your pattern live: drag a point in 2D while the garment drapes and the fabric follows without restarting. When the drape has settled and every seam is closed, it rests and is saved with the pattern.
• Added a Fit map that colours the garment by how much the fabric stretches, from loose to too tight.
• Added quick fabrics (cotton poplin, denim, jersey, linen, silk satin and wool suiting), a colour picker and Use for all pieces. Fabric now shows its weave or knit up close, and a slightly paler wrong side.
• Added avatar poses, Studio, Contrast, Warm and Flat lighting, Save image and a 6-second Turntable video.
• Opening an example now swings the camera around the avatar and drapes the garment in front of you. An empty 3D pattern shows how to get started, and the example list can show only 3D garments.
• Sewing is simpler: the second edge of a seam is sewn the right way round on the body, and the seam tool stays active for the next seam.
• Hovering a piece in 2D or 3D now highlights it in the other view.
• Draping is up to twice as fast, editing a draped piece updates 3D sooner, and slower computers switch to faster rendering automatically.
• Fixed the 3D view sometimes staying empty or not reacting to the fabric after switching 3D off and on.

1.2.18 - Industrial Grading and Editable Pieces

• Reworked grading into a size range built from a base size: each size keeps its own changes, the base size can be swapped, and edits to the base can either carry over to all sizes or change the base only.
• Added the Sizes & grading dialog with grade rule tables and rule tools, size series such as Regular and Tall that are graded separately, measurement checks per size, and a Size geometry panel with grade vectors drawn on the canvas.
• Added ASTM/AAMA DXF export with grade rules and a RUL file, including graded notches, sew lines and internal lines.
• Added pieces that are edited directly on the piece: draw a new piece with Draw new piece (D) or drag out a rectangle with New rectangular piece (R), and edit each edge's seam allowance, corners and notches in place.
• DXF files can now be imported as editable pieces, and an ASTM/AAMA DXF with a RUL file brings in all its sizes. Imported fixed pieces can be made editable afterwards.
• Added Detach from draft, which gives a piece built from the draft its own copy of the geometry, and rotation and flipping of such pieces in every size.
• Added seam allowance that tapers along an edge and folded hem corners.

1.2.17 - Safer Pattern Work, Improved 3D, and Expanded Exports

• Added safer recovery for unsaved Pattern Studio work, with separate recovery per browser workspace and warnings before a pattern is replaced or discarded.
• Reworked the 3D arrangement workflow with clearer placement guidance, easier piece selection between 2D and 3D, improved framing, and clearer cloth-side and seam feedback.
• Improved live 3D editing so arranged and simulated pieces stay synchronized while patterns move, measurements change, and geometry is updated.
• Added BodyDbl 3D model exports in OBJ, STL, and GLB through new Personal and Studio Export Passes.
• Added export of a selected saved size or all saved sizes to DXF and SVG, with all-size exports packaged as a ZIP file.
• Expanded PLT / HPGL import so detected contours can become selectable pattern pieces with probable notches and non-cutting lines, and improved ASTM DXF and SVG import fidelity.

1.2.16 - Pattern Studio Editing and Body Measurements

• Improved Pattern Studio editing so solved points, linked endpoints, and stalled solver projections behave more reliably during drag and modification workflows.
• Made the variables dialog resizable, giving more room when working with larger variable sets and longer formulas.
• Added clearer formula diagnostics, including warnings for broken references and calculated formula values shown directly in formula inputs.
• Added formula-driven text positions, so pattern text can follow calculated coordinates instead of only fixed placement.
• Improved printing by including the selected size name in printed pattern output.
• Improved body measurement editing in Pattern Studio so clicking or adjusting a measurement shows the matching guide line on the 3D body more reliably with auto zoom.
• Improved API-connected pattern workflows with better element labels, diagnostics, and grading support.

1.2.15 — Pattern Studio Improvements and More Reliable Exports

• Improved Pattern Studio so constrained triangles and connected lines solve more naturally when an unconstrained shared point can move.
• Added clearer constraint error handling, with repeated errors grouped together so the important issue is easier to see.
• Added formula reference autocomplete and variable descriptions to make formulas easier to write and understand.
• Added pattern piece layers and better default names for new paths, making larger drafts easier to organize.
• Added the pattern name to the Studio header and to marker PLT labels.
• Improved PDF and marker exports, including drill holes in pattern PDFs and HPGL vector labels for markers.
• Improved CUT import and cutting room export for slit notches.
• Improved copied patterns so constraint references are remapped correctly.
• Improved referenced path mirroring across external lines.
• Added a warning when the current layer is hidden, so new drawing actions are less confusing.
• Improved feedback reports by attaching the pattern state and packaging pattern attachments more reliably.
• Added OAuth support for MCP and made API keys user-scoped for better account separation.

1.2.14 — Pattern Studio Automation and Export Updates

• Added beta PNG export from Pattern Studio, with server-rendered output suitable for sharing and quick previews.
• Added a new beta SVG export path with cleaner server-side rendering and stitched-looking seam lines.
• Improved Pattern Studio editing consistency across points, paths, pieces, seams, notches, variables, materials, layers, and text.
• Improved undo, redo, dry-run, and validation handling for many editing actions so failed edits are easier to recover from.
• Added an optional MCP session workflow for advanced users who want to inspect, modify, export, or save patterns through API-connected tools.
• Added Pattern Studio controls for enabling an MCP session, copying its session ID, and disconnecting it again.
• Added support for API-connected tools to create blank pattern sessions, load saved patterns and versions, export SVG/PNG previews, and save results back as pattern versions.

1.2.13 — Seam Corner Controls and Pattern Studio Refinements

• Added seam corner types for pattern piece points, including intersection, radius, by length, edge symmetry, right-angle joins, and no join.
• Improved rounded piece corners so radius settings also work correctly when a mirror line generates the final piece geometry.
• Added formula-driven dynamic piece scaling for final piece geometry.
• Expanded marker PLT / HPGL export and improved marker filenames with material information.
• Improved Pattern Studio editing with multi-path copy and selection movement, clearer curve handle formula references, and unit-aware curve handle formulas.
• Improved editing stability by protecting read-only variables and preventing pattern changes that cannot be solved.
• Improved Pattern Studio startup and update UX with a more compact, non-blocking update panel, clearer selected tool labels, and better desktop scrolling for What's New.
• Optimized 3D simulation rendering for smoother interaction.

1.2.12 — Conventional Tool Shortcuts and Editing Improvements

• Updated Pattern Studio tool shortcuts to follow drawing-app conventions: V now returns to Modify & select, P activates the Pen tool, N creates a point, M stays reserved for Measure, and Shift+S activates multi seam.
• Added visible shortcut badges to toolbar tools, making keyboard commands easier to discover without opening menus.
• Improved fullscreen keyboard behavior so Esc leaves browser fullscreen without also cancelling the active Pattern Studio tool.
• Added rounded piece corners for smoother pattern drafting.
• Added HPGL / PLT background import with LT color support.
• Expanded drill-hole and piece-point workflows across Pattern Studio, CUT, and DXF import/export.
• Improved CUT import/export reliability for notches, cutlines, internal cutouts, rotated pieces, and marker roundtrips.
• Improved editing accuracy with guide snapping on release, layer visibility handling for pieces, scale actions for selected points, and unit-specific variable precision.
• Improved context menu positioning so menus and submenus stay within the viewport.

1.2.11 — Alterations, CUT I/O, and Editing Stability

• Introduced a more complete alterations workflow with freeform parametrics and apply-edit support, making iterative pattern changes faster and easier to control.
• Added clearer alteration resolution feedback, so you can quickly see what is solved and what still needs attention.
• Added CUT file import and export to improve handoff with production and external tooling.
• Expanded grading workflow with grading profiles, better anchor handling, and cleaner size visibility control.
• Improved editing feedback and precision with drag delta overlays, cumulative keyboard measurement chaining, and better constraint behavior in edge cases.
• Delivered multiple stability fixes across core editing flows, including variable updates, notch corners, grain angle handling, undo/redo consistency, and alteration curve handle preservation.

1.2.10 — Better Grading, Sharing, and Editing

• Improved grading workflow with a clearer dialog and a new visual overlay.
• Added pattern sharing within organizations.
• Made copy/paste behavior for pattern pieces and paths easier and more consistent.
• Improved editing stability for points and lines to reduce glitches in complex edits.
• Increased DXF import reliability for a wider range of files.

1.2.9 — Easier Import and Clearer Editing

• Added Seamly import with automatic unit detection for a smoother import flow.
• Introduced a stand-alone pattern viewer and a new pattern text tool.
• Improved clarity in both 2D and 3D with better labels and viewing.
• Expanded editing options for points and piece handling.
• Included stability and quality fixes across core workflows.

1.2.8 — Smoother 3D Arrangement

• Added a full 3D arrangement workflow so placing pieces feels faster and more direct.
• You can now place by hovering, flip pieces correctly, and fine-tune position with X/Y and offset sliders.
• Arrangement points are clearer and easier to work with, including better behavior while simulating.
• Arranged pieces now keep their placement more reliably when you continue editing.
• Stability improvements reduce common issues while moving pieces in 3D.

1.2.7 — Creating seams in 3D

• The single- and multi-seam creation tools are now available in 3D.
• 3D and 2D seams are now highlighted simultaneously.
• Performance improvements for 3D seam hover and visualization.

1.2.6 — Piece Labels in 2D + 3D

• Added piece name labels that can be toggled in the top toolbar.
• 2D labels render centered on each piece and scale with zoom.
• 3D labels are baked into textures and show face/back side.

1.2.5 — HDRI Lighting + Seam Snapping

3D Rendering

• Added HDRI-based lighting for more realistic 3D previews as well as a new "Flat" lighting mode for editing.
• Depth of field is now applied to the 3D preview in HDRI mode.
• Save as JPEG lets you export a 3D preview as a JPEG image.

Seam Quality

• Snaps seam points after simulation (within 2 mm) to prevent visible gaps.

1.2.4 — Smarter 2D Solver

2D Pattern Solver

• Made the 2D pattern solver smarter about resolving constraint layouts.

1.2.3 — Layer Styles

Layer Style Overrides

• Added per-layer style overrides for construction lines (colors, line weight, dash style).
• New layer style editor with light/dark colors, ISO line weights, and dash presets.
• Override toggle keeps the default constraint styling when disabled.

1.2.2 — Layers

Layer Support

• Added layers so you can keep guide lines separate and hide them when things get busy.
• New Layers panel to manage visibility and pick the active layer.
• Move points and paths between layers from the context menu or the properties panel.

1.2.1 — More Seam Tool Improvements

Seam Tool Improvements

• Added separate single- and multi-seam tools with clearer toolbar grouping for better UX.
• New seams are auto-selected and will show seams in 3D immediately.
• Strengthened seams in simulation for better cloth behavior.

1.2.0 — Improved 3D Sewing

Improvements

• A single seam can now span multiple segments. Hold Shift to select multiple source and target segments.
• Clearer seam visualization with per-seam coloring and less clutter in the 2D workspace.
• More reliable constraint handling when stitching a longer edge to a shorter one.
• Better support for stitching holes.

1.1.9 — Pattern Sharing and Public Patterns

Improvements

• Pattern sharing is here! Share your patterns with everyone and manage your sharing settings anytime.
• Public patterns let you publish your pattern to the community. We will always ask for your consent before sharing.

1.1.8 — Donate to Support SeamScape

Improvements

• We have added a page for donations to support SeamScape. Your support helps us keep the app running and improving until we can figure out a friendly and affordable business model.
• Donations are absolutely optional but we really appreciate them!
• Donate here: https://seamscape.com/support-seamscape

1.1.7 — Internal path polish

Features

• Internal paths can now carry an override color; leave it blank to keep the default styling.
• Added a “Show in 3D” toggle for internal paths so you can hide or show them in textures independently of 2D visibility.

Improvements

• Constraint errors are much clearer: messages now spell out what went wrong, with expected vs current values and any formulas involved.
• The error panel has a fixed header explaining common causes and a larger Undo button for quick recovery; the list below scrolls if needed.
• Clicking an error selects the problematic point or path so you can jump straight to it in the scene.

1.1.6 — Steadier edits, stronger cloth

3D Cloth Simulation Enhancements

• The 3D cloth simulation is truer to life: seams hold better, cloth bumps into avatars and itself more realistically, and grabs feel firmer when you pull on the fabric.
• Tuned the sliders for stretching and bending stiffness in the cloth material settings, making it easier to get the look you want.
• The default material has a white front and a light gray back, improving visibility when working with cloth objects.
• Tune damping to avoid oscillations in cloth simulations.

Bug Fixes and Improvements

• Undo history now comes back correctly (bug fixes) with you after a browser refresh, so you can keep stepping back through your edits without starting over.

1.1.5 — Better undo history

Persistent storage of undo history: The undo history is now saved between sessions, allowing you to revert changes even after closing, refreshing and reopening the application.

1.1.4 — Material library improvements

• One-place library management: Browse, create, and update materials in a dedicated Material Library dialog, with clear tabs for Mine/Public (Shared only when you’re in an organization).
• Update from library with confidence: Materials now show when a newer library version is available. Updating asks for confirmation and applies the latest settings; synced items are marked as “Matches library.”
• Scene-aware imports: Materials already in your pattern are marked, and the “Add to pattern” button only appears when you need it.
• Cleaner editor: The material editor footer is fixed at the bottom with a compact status hint and an “Update” action when a library version is newer.

Seamscape 1.1.3

What's new

• Multi-select with Shift: Select multiple points or pieces by Shift-clicking to build a selection group.
• Snap to guides: Toggle View -> Snap to guides to align edits with guide lines.

Bug fixes

• Ellipse sliding points: Fixed an issue that prevented ellipses from having sliding points.

Thanks for the feedback and keep it coming!

Seamscape 1.1.2

What's new

• Improved 3D mesh generator: The mesh generator now better reflects how fabric is constructed and properly respects grain lines for more accurate simulation.
• Pattern piece copies: Pattern pieces now support rightPieces and leftPieces with optional flip settings, making it easier to handle marker generation, cutting, and exporting multiple copies of the same piece.

Bug fixes

• Pattern export API: Fixed an issue where server-side pattern exports would fail when loading body coefficients.

Improvements

• Internal lines optimization: Internal lines no longer automatically trigger mesh regeneration, improving performance in 3D view.

Seamscape 1.1.1

What’s new

• Media library: Upload and organize images in a shared library. Images are shared with your organization automatically.
• Library tabs: Switch between Mine, Shared, and Public libraries. Keep uploads private, share with your team, or (for super admins) publish to everyone.
• Place images from the library: Use “Place image” in the File menu to drop library images into your pattern background instead of uploading each time.
• Material textures: The material editor now opens the media library, so you can pick existing images for textures without pasting URLs.

Tips

• Add images to your library once, then reuse them across materials and patterns.
• Open “Media library” from the File menu to manage uploads and deletions.

Version 1.1.0

SeamScape 3D — Beta Release

We're excited to introduce SeamScape 3D, our new in-browser cloth simulation within Pattern Studio.

It's built with one focus: fit verification and pattern visualization, helping you save time and avoid surprises before making your real sample.

Cloth simulation is extremely hard, and nothing is ever perfect, but we've tuned SeamScape 3D with stable default settings that work for most cases. All you need is a modern browser and a decent GPU. To check if your computer is up for it, you can test your browser here: https://seamscape.com/browser-3d-test

This is just the first step, and we'll keep improving the physics and adding new features as we go. We'd love your feedback along the way.

PS: There's no user manual yet — just jump in and explore!

Version 1.0.5

• DXF (AAMA/ASTM) import now applies mirror lines, notches, and grading when a matching RUL file is present.
• Formula editor is smoother and easier to use.
• General UI and UX polish.

Version 1.0.4

• New colors for the interface
• Fixes for the UI
• Better user experience

Version 1.0.3

• Materials now live directly on each pattern, so assigning or reusing fabrics across pieces is faster and stays in sync across the workspace.
• Pattern pieces gained a description field, and any legacy formula for material is preserved there automatically when you load an older pattern.
• 2D textures are rendered whenever a material has a color or texture.

Version 1.0.2

• Re-worked the select and modify tools combining them into a single tool.
• Dragging the workspace now works by holding down SPACE as well as CMD or CTRL and dragging.
• Clicking and dragging now works as the multi-select tool.

Version 1.0.1

• Added a versioned splash screen in Patternmaker so you can catch up on new features.