Grow a custom vector maze with a command line; print as SVG.
./gradlew run --args='--size=30,30 --paper 4x4in'
inkscape solution.svg -o doc/basic.png -w 400 -h 400
(If you're using older Inkscape 0.92, replace -o with -z -e.)
I use this program to plot huge 3 x 4 foot mazes on my 1985 pen plotter.
Mazes can live on a rectangular grid, a hexagonal grid, or a triangular grid. (The architecture makes it easy to even extend to an irregular pattern, like a random Voronoi diagram.)
./gradlew run --args='--size=30,30 --paper 4x4in --pattern hexagon'
inkscape solution.svg -o doc/hexagon.png -w 400 -h 400
./gradlew run --args='--size=30,30 --paper 4x4in --pattern triangle --stretch 5.0'
inkscape solution.svg -o doc/triangle.png -w 400 -h 400
The maze can have an arbitrary boundary and holes in the middle, which you can specify by drawing a black-and-white PNG file.
In the second example, notice that the cell matrix height is 69, to account for the different aspect ratio of the hexagonal layout. If you're mixing a mask with a hexagonal or triangular pattern, expand the y cell count by 2/√3 (about 15%) to preserve the aspect ratio of the mask.
./gradlew run --args='--size=60,60 --paper 4x4in --mask samples/fat-star.png -stretch 1.2'
inkscape solution.svg -o doc/star-masked.png -w 400 -h 400
./gradlew run --args='--size=60,69 --paper 4x4in --mask samples/smiley.png --pattern hexagon'
inkscape solution.svg -o doc/smiley.png -w 400 -h 400
You can specify the locations of the exits.
./gradlew run --args='--size=60,60 --paper 4x4in --mask samples/fat-star.png --proportionalExits 0,1,1,1'
inkscape solution.svg -o doc/star-exits.png -w 400 -h 400
You can select how convoluted the solution path is, from "pretty easy" through "labyrinth".
./gradlew run --args='--size=50,50 --paper 4x4in --proportionalExits 0,0,1,0 --stretch 0'
inkscape solution.svg -o doc/easy.png -w 400 -h 400
./gradlew run --args='--size=50,50 --paper 4x4in --proportionalExits 0,0,1,0 --stretch 7'
inkscape solution.svg -o doc/hard.png -w 400 -h 400
Don't like the solution? Bump the random seed to explore others.
./gradlew run --args='--size=50,50 --paper 4x4in --proportionalExits 0,0.3,1,0.7 --seed 2'
inkscape solution.svg -o doc/seed2.png -w 250 -h 250
./gradlew run --args='--size=50,50 --paper 4x4in --proportionalExits 0,0.3,1,0.7 --seed 3'
inkscape solution.svg -o doc/seed3.png -w 250 -h 250
./gradlew run --args='--size=50,50 --paper 4x4in --proportionalExits 0,0.3,1,0.7 --seed 4'
inkscape solution.svg -o doc/seed4.png -w 250 -h 250
maze-harvester knows about paper sizes --paper a4 --margin 3cm,
and (of course) it can emit E-sized paper for your HP 7585B:
--paper 36x48in --margin 1.5in
TODO
- PDF, PNG output modes? https://xmlgraphics.apache.org/batik/javadoc/org/apache/batik/apps/rasterizer/SVGConverter.html
- How about some tests?
- add big-rooms