Carhart Rose Generator

Carhart roses are a fourfold rotationally symmetric grid design. Build one from scratch or explore pre-built roses.

Mode

Generate roses automatically or place segments manually on the canvas.

Generate Manual

Grid size

The dimension of the grid. This limits how big of a rose you can draw. Increasing the grid size also increases the solution space for finding a rose for the given seed, which may take longer. A medium grid is 32×32.

S M L XL

Length

The target path length of the rose. The longer the path, the more complex the solution can appear, but also the more potential branches in the solution space, which can take longer. The maximum path length for a 32×32 grid is 272.

Direction

The starting direction of the rose.

Animation

When enabled, the solution will be animated instead of statically presented.

ON OFF

When enabled, live search candidates will be animated as the solution search is being conducted. Dramatically increases the time to find a solution given each search candidate must be rendered as a frame in the animation.

ON OFF

Style

The animation style of how the solution is drawn on the grid.

Symmetrical: All four lines are incremented simultaneously.

Advanced

Generation

Prune aggression

How aggressively invalid subtrees in the solution space are pruned.

Low: TODO Curiosity

How candidate ordering balances compactness and exploration.

Random: Curiosity is turned off. Search candidates are chosen at random while computing a solution.

Constraints

Seed

The seed for the solution. Use lowercase letters and digits. Identical seeds with the same grid, direction, length, search limit, prune aggression, and curiosity produce identical solutions.

Custom grid size

Instead of picking a preset, specify the exact grid size. Maximum available grid size is 400×400.

Search limit

How many attempts the search algorithm is allowed to try before timing out. This is essentially the depth of the solution space. Increasing search limit increases the potential time the algorithm can run.

Animation

Show search candidates

When enabled, while animating search, show invalid candidates as well as valid ones.

ON OFF

Frame delay

The delay in milliseconds between frames when animating the solution. Increasing the delay makes the animation easier to follow but slower to complete.

Display

Color

Grid

The background color of the grid.

Single line color

When enabled, all four lines share one color. When disabled, each line can be colored independently.

ON OFF

Line color

The stroke color of the rose.

Show grid

When enabled, display background grid dots.

ON OFF

Show hints

When enabled, show helpful information about the validity of candidate positions when building.

ON OFF

Rounding 0%

How much corners are rounded on the rose.

Save format

The file format used when downloading the solution artifact.

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