(For the very latest changes, see
Changes in version 0.?? (released ???)
- Fix: Option to show multiple chemicals now works with 3D images and meshes too.
- Improvement: The rdy command line utility accepts more arguments and can print VTI contents in text form for pipeing to other apps.
- New patterns:
Changes in version 0.8 (released April 2017)
- Can record 3D surface animations, as .obj or .vtp format frames.
- Can import an image (.png, .jpg or .bmp) to use as a starting condition.
- Can import a mesh to use as a starting pattern for a volume. (File > Import Mesh > Paint this pattern into a 3D volume image)
- New option for transparency in the initial pattern generator, to leave parts of the image unchanged.
- Changing the number of chemicals no longer blanks the existing pattern.
- New patterns:
Changes in version 0.7 (released August 2015)
- Ability to change data type from single to double precision floats, for formula rules.
- New patterns:
- LifeBlur.vti, where Conway's Game of Life seeds a diffusion process.
- Froese2014_Fig3.vti, Gray-Scott plus worm trails.
- Cornus Ammonis gives us MandelbrotWorms.vti, strange worms in a rule inspired by the formula that produces the Mandelbrot Set.
- Cornus Ammonis also gives us experiments in applying edge-detection kernels to R-D systems for gradient estimation:
second normal derivative feedback,
Pearson chained edge-detectors,
"surfing" solitons, and
- And more amazing rules by Cornus Ammonis: bz-warpsharp.vti applying the warp-sharp algorithm to the Belousov-Zhabotinsky system, smoke.vti, smoke-ising.vti, and splats.vti.
- advection.vti: the advection equation, plus some different
methods of integrating it, for comparison:
the midpoint method,
- Pennybacker2013/phyllotaxis_fibonacci.vti and Pennybacker2013/phyllotaxis_hexagons.vti
showing a single-chemical model of phyllotaxis in plants. Also Pennybacker2013/spots.vti, Pennybacker2013/stripes.vti and
Pennybacker2013/parameter_map.vti, showing a simpler model without the gradient term.
- bilaplacian_interpolation.vti, showing the effect of the bilaplacian term instead of the more common laplacian.
- Agmon2014/oil-water.vti, where two mutually-repelling fluids undergo phase separation, and
Agmon2014/cells.vti showing cell-like structures with a membrane.
- Guo2014/guo.vti - a model of branching phenomena in lung morphogenesis.
- gaussian-smoothlife.vti - a variant of Stephan Rafler's SmoothLife system with neighborhoods computed with 2-pass 1D gaussian convolution.
- fast-mccabe.vti - McCabeism implemented with 2-pass 1D gaussian convolution.
- From Dave Mann: smiley_faces.vti.
- Five new patterns from Dan Wills: grayscott-historyWaveDC_movingWormsAndSolitons.vti, orbitsNova_buildAndDestroyBlobs.vti, orbits_epochs.vti, grayscott-historyWaveDC_dualPhaseSolitonWormFlow.vti, heat-equation-boiling-history-wave_glidersUnstable.vti.
- Fix for blank lines being inserted into files on every save.
- Fix for font size problems with the color bar.
Changes in version 0.6 (released November 2013)
- Phase plots, showing how the chemicals vary compared to each other.
- 1D systems now have option to show multiple chemicals.
- New overlay fills: gaussian, sine.
- New patterns:
- salt2D_demo.vti, Miller and Fredkin's Salt CA, running in 2D.
- salt3D_circular330.vti, Miller and Fredkin's Salt CA, showing circular movement.
- Brusselator.vti, a model of the famous chemical reaction named Belousov-Zhabotinsky.
- Yang_1.vti, Yang_2b.vti,
Yang_4.vti: from a 2002 paper by Lingfa Yang et al.
- McCabe.vti, McCabe_simple.vti,
Jonathan McCabe's "McCabeism"s, showing detail at multiple spatial scales.
- Yang2003/Fig2.vti, Yang2003/Fig3a.vti,
from a 2003 paper by Lingfa Yang et al.
- Kytta2007/Fig5.7a.vti, Kytta2007/Fig5.7c.vti,
Kytta2007/Fig5.8g.vti, from Klaus Kyttä's 2007 MSc thesis.
- Yang2006/jumping.vti, jumping_cGL.vti,
showing 1D "jumping oscillons" from a 2006 paper by Lingfa Yang et al.
- Meinhardt1982/zebra.vtu (replaces horse.vtu), showing stripes on a zebra mesh.
- Schrödinger equation demos: packet.vti, packet_pass.vti,
- Purwins1999/multiGlider.vti by Dan Wills, showing many gliders in the Purwins rule.
- Experiments by Dan Wills: cglrd_ramps_example.vti,
and Simon Gladman: vermiformSolitons.vti.
- Bug fix: File > Start Recording... wouldn't work when set to 'current view'
- Bug fix: Languages with different decimal separators (eg. French) would cause problems with importing meshes and editing parameters.
- Re-organised more patterns into folders
Changes in version 0.5 (released December 2012)
- Brush size can be changed.
- Polyhedral cells now supported. Use vertex-, edge- or face-neighbors.
- File > New Pattern now also offers to create:
- random 2D Delaunay and Voronoi meshes
- random 3D Delaunay honeycomb
- body-centred cubic honeycomb (truncated octahedra)
- face-centred cubic honeycomb (rhombic dodecahedra)
- diamond honeycomb (triakis truncated tetrahedra)
- New patterns:
- Buss_hex.vtu, Frank Buss' hexagonal CA.
- tri_life.vtu, B45/S34 on a triangular grid.
- Imai_glider_B2SC4.vtu, a
naturally-occuring glider on a Penrose tiling.
- Goucher_loops.vtu, showing
how Adam Goucher's Penrose glider behaves on the darts-and-kites tiling.
- hex_B2oS2m34_gliders.vtu, Paul Callahan's
Life-like rule on a hexagonal lattice.
- oregonator.vti, the Oregonator, a model for the
famous Belousov-Zhabotinsky reaction.
by showing the magnitude of the complex number we get a quite different view to the
- larger-than-life.vti, a CA rule that uses a
- Gray-Scott/Pearson1993.vti, following
Pearson's 1993 Science paper.
- SmoothLife2011/smoothglider.vti, Stephan Rafler's
SmoothLife is a continuous version of Conway's Game of Life. This version has a glider like the one
- SmoothLife2011/smoothlifeL.vti, a SmoothLife
rule that supports an amazing variety of life-like phenomena.
- SmoothLife2011/glider_3D.vti, a 3D glider in a
- Purwins1999/glider.vti and glider_3D.vti: self-avoiding gliders in 2D and 3D.
showing two newly discovered 3D gliders in the U-Skate World.
showing another glider in the U-Skate World.
- New Laplacian stencils for faster or more accurate time steps: 2D 9-point, 3D 19-point, 3D 27-point.
- New File menu command: Save Compact... for easy sharing
- New Action menu command: Convert to Full Kernel
for converting formula rules to kernel rules (to get more flexibility).
- 3D images now show cell colors when use_image_interpolation=false, as with 3D meshes.
- File > Start Recording... can now save out all the chemicals.
- Bug fix: Full Screen wouldn't hide paint toolbar.
- Bug fix: Pencil tool wouldn't work in some meshes on some platforms.
Changes in version 0.4 (released August 2012)
- New paint tools: pencil, brush, color picker. Paint on images and meshes, even while the system
- Undo/redo mechanism for paint actions.
- New patterns:
- Bug fix: Color bar colors were garbled on some platforms.
- Bug fix: Some lines in the 1D view appeared black on some graphics drivers.
- Bug fix: Conflicting preferences file from previous versions would cause blank window. As an
interim fix in 0.3, use View > Restore Default Layout.
- Bug fix: Control-clicking could cause problems in Mac app.
- Bug fix: Mac users can command-click to roll the current image.
Changes in version 0.3 (released June 2012)
- Reaction-diffusion can now be run on the surface of meshes, or in a volume of tetrahedral cells.
Load the *.vtu files to see examples.
- New menu commands:
- File > New Pattern now offers to create a new image (1D, 2D
or 3D) or mesh dataset (geodesic sphere, torus, tetrahedral mesh, triangular tiling, hexagonal tiling,
rhombille tiling or Penrose tiling).
- New patterns:
- bunny.vtu, lion.vtu, showing RD systems running on the surface of polygonal
- Bays_3D.vti, implements a 3D cellular automaton.
- Ising_regime.vti, showing how tiny
variation can grow into large meanders in the FitzHugh-Nagumo system.
Robert Munafo's glider after which the U-Skate world is named.
- Gray-Scott/parameter-map.vti, showing
how the parameters affect the Gray-Scott system.
- Turing1952/spots_noisy.vti, showing
the effect of noise on Turing patterns.
- Gray-Scott/Lesmes_noisy.vti, showing
how noise can change the behavior of reaction-diffusion systems.
showing how noise can trigger solitons to replicate.
- mutually-catalytic_spots.vti, where
big spots can only replicate if full of small spots.
- parameter_modulation_demo.vti, showing how
values in an extra chemical can be used to modulate the parameters of a system in an 'R' shape.
- parameter_modulation_demo2.vti, showing how
values in an extra chemical can be used to modulate the parameters of a system in a circular shape.
- life_torus.vtu, showing Conway's Game of Life on a torus
covered with quadilaterals.
- PenroseTilings/life.vtu, showing the Life rule B3/S23 running on a
showing how the heat equation can interpolate between spatial values.
- complex_Ginzburg-Landau.vti, a model of
superconductivity that shows the onset of spiral waves.
- wave_equation.vti, showing the spreading of a ripple.
- Changes to the render settings:
- use_image_interpolation=false now gives voxelised Minecraft-style rendering in 3D.
- New entries:
- show_color_scale: allows the color scale legend to be turned off.
- color_displacement_mapped_surface: allows the displacement-mapped surface (for 2D
images) to be colored using the image.
- show_cell_edges: allows the edges of the cells to be shown.
- show_bounding_box: allows the bounding box to be shown or hidden.
- Changes to the overlays:
- New overlay shape: pixel, for specifying cells directly.
- New overlay fill: linear_gradient, for
values that follow a linear ramp.
- New overlay fill: radial_gradient, for
for values that vary depending on the distance from the center.
- Each overlay element can now contain multiple shape
- Pattern files (*.vti, *.vtu) can now be loaded into Paraview correctly, with named chemicals
('a', 'b', etc.). There they can be visualized by volume rendering, or contoured in various ways.
- Ready has a new (much nicer!) icon.
- New option for image-based systems: wrap, to toggle toroidal
Changes in version 0.2.2 (released March 2012)
- Fixed issue that gave 'Invalid work group size' and 'expecting CL_KERNEL_WORK_GROUP_SIZE to be
a power of 2' errors on different graphics cards.
- Fixed XML-escaping issue that caused saved patterns to fail to load.
Changes in version 0.2 (released March 2012)
- 1D patterns now supported, as a color strip and a line graph.
- Patterns can be saved and loaded, as VTK image data files (*.vti) extended with
an extra XML element called "RD" - see formats.html
- Toolbars added, for common functions.
- Switched to a more flexible scheme for storing user preferences in a file
called ReadyPrefs. See here for more details.
- Added a Preferences dialog for changing various settings,
including keyboard shortcuts.
- Added File > New Pattern for setting the pattern to zeros.
- Added File > Open Recent submenu.
- Added View > Full Screen for toggling full screen mode.
- Added View > Fit Pattern to fill the view with the entire pattern.
- Added View > Wireframe for toggling from wireframe to surface view. Many other render settings
can be changed in the Info Pane.
- Added Action > Reset to restore a pattern back to its starting point.
- Some menu items have been moved or renamed.
- The Patterns Pane no longer shows inbuilt demos. It now shows files stored in the supplied
Patterns folder. Ctrl/right-clicking on a file will open it in your preferred text editor
(set in Preferences > File). You can also add your own pattern
folder via File > Add My Patterns.
- The Info Pane allows you to edit a rule's parameters and other properties while it is running.
- The Help Pane displays .html files stored in the Help folder via corresponding items
in the Help menu.
- An Initial Pattern Generator is stored in the file and can be run to make new starting patterns.
A series of overlays are composed in the different chemical images, and may include randomness.
- A new rule type "kernel" allows full OpenCL kernels to be specified, for maximum flexibility.
- The world size can now be changed. Set x, y or z to 1 for 2D or 1D systems, e.g. 128x1x1
- For 2D systems, all the chemicals are shown side-by-side. This can be turned off in the render
Changes in version 0.1 (released January 2012)
- Includes 2D and 3D Gray-Scott demos.
- CPU and OpenCL implementations.
- User can select from available OpenCL devices (GPUs or CPUs).
- OpenCL is loaded at runtime, so we can still do something even if it is not available.
- User can edit OpenCL kernel and apply it to the running system.
- 3D visualisation shows a volume contoured at a fixed value, and a slice from the middle
rendered as an image.
- 2D visualisation shows a false-color image and a height-mapped mesh on the back.
- Works on Windows XP+, Linux and MacOS 10.6+.