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semantic, procedural, non-destructive vector modelling
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README.md

ommpfritt

ommpfritt or short omm is a free and open source vector modelling application. It brings the workflow of (3D) modelling tools to the 2D vector graphics world. The design of the application encourages and supports the user to produce maintainable documents, using concepts like procedural modelling and non-destructive editing.

The concept lies in between traditional vector graphic editors (e.g., inkscape), CAD applications and (3D) modelling tools.

Primary use case is creating and editing (animated) info graphics, diagrams, icons and semi-technical drawings.

screenshot

Features

General

  • load and save scenes to/from human readable json format
  • all modifications to a scene can be undone (unlimited undo/redo-stack)
  • simple concept with few very concrete item classes (Object, Tag, Style, Tool)
  • wide drag'n'drop support: move, copy or link Objects, Tags and Styles naturally
  • non-destructive, non-linear editing: properties of Objects, Tags, Styles and Tools can be accessed and modified at any time.
  • programmable: every property can be accessed and modified using an internal python interpreter
  • build complex object hierarchies and object groups
  • flexible GUI using dockable widgets
  • properties can be added at runtime
  • multi-selection support for properties: compatible intersection of properties of all selected items (objects, tags, styles, tools) is shown and can be modified simultaneously
  • flexible, customizable key binding sequences (aka short-cuts)
  • multi-language (currently English and German only)
  • rasterize to png and jpg
  • export to SVG

Styling

  • build complex reusable style cascades

Objects

  • path object: any number of points, closed/open
    • bézier mode: modify the tangents of any point individually
    • smooth mode: tangents are set automatically
    • linear mode: no tangents
    • subdivide/remove points
  • procedural path: control the points and tangents using python
  • ellipse, rectangle, line
  • empty: no geometry, but useful as group parent
  • image: load JPG, PNG, SVG, PDF as object
  • instance: all changes of the reference are updated in the instance-object, too
  • cloner: many instances in a regular arrangement
    • grid
    • linear
    • along any path
    • radial
    • by python script
  • mirror
  • view: define a view onto the scene for export
    • set the export region comfortably within the editor
    • adjust to viewport or vice versa
    • switch between any number of self-defined views
    • supports translation, scaling, rotation and shear

Tags

  • path tag: constrain position of any object to any path
  • style tag: add a style to the object
  • script tag: general purpose scripting without limits

Tools

  • object selection: select in viewport and rotate, move or scale* along common center of all selected objects
  • point-level: select in viewport and rotate, move or scale* along common center of all selected points. Works fine even if many path-objects are selected.
  • optinally transform axes only. Re-set the origin of the object without affecting its geometry.
  • brush-select: select points as if you were painting

Contributing

Although you can already use the app, it's still a long way until v1.0, so we need your help! Currently we're looking for

  • developers (have a look at the issues section; better get in touch with us before you start coding)
  • users (aka. testers, file an issue, tell us your ideas)

Building

omm uses cmake. Install the depencendies and building should work out of the box. We only test on arch-linux using gcc and clang, but we don't see a reason why it shouldn't build on other linuxes/win/mac, too.

Dependencies:

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