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57 lines
2.1 KiB
Plaintext
57 lines
2.1 KiB
Plaintext
## square-triangle horocycles
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## From: https://superliminal.com/geometry/tyler/gallery/hyperbolic/horocycle.html
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h2.
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# this part is just like in hr-standard-tiling.tes
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distunit(arcmedge(3,3,4,4,4))
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let(u3 = regangle(1, 3))
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let(u4 = regangle(1, 4))
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unittile(u3,u3,u3)
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unittile(u4,u4,u4,u4)
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# now we provide the rules to build the tessellation tree.
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# treestate 0: the first square in a subtree, with two triangle siblings and their subtrees
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treestate(1, PARENT, 2, 1, 3)
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# treestate 1: square with a single branch
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treestate(1, PARENT, LEFT, 1, RIGHT)
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# treestate 2: left triangle with full left tree
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treestate(0, PARENT, LEFT, 0)
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# treestate 3: right triangle with full right tree
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treestate(0, PARENT, 0, RIGHT)
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# the first number is shape (treestates 0 and 1 are shape #0 (squares), treestates 2 and 3 are shape #1 (triangles))
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# treestate 0 has its PARENT at edge 0, and children in treestates 2, 1, 3
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# PARENT always connects to the parent (if a treestate appears as a child of another treestate, it should have 1 PARENT, otherwise it should have 0)
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# LEFT connects to the left subtree, RIGHT connects to the rigth subtree
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# you can see the resulting tree structure by:
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# * loading this tes file
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# * experiment with geometry -> size of the world
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# * set 'which distance' to 'start'
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# * set 'number codes' to 'type'
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# * enable 'triangle grid: tree edges'
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# (or with commandline: '-tes tessellations/sample/horotiling.tes -canvas A -expansion 2 1 0 -palrgba "g tree" ffffffff')
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# you can change the initial treestate -- the default is 0
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# first_treestate(3)
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# note: Camelot can only be created on cell types which have root treestates (those with no PARENT) assigned to them -- here we have no root treestates, so no Camelot
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# Set the default sight range to 7. May be useful for debugging
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range(7)
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# Make the boundaries narrower. The default is boundary_ratio(1)
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boundary_ratio(.2)
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# this makes the 'floor stars' appear smaller (while 'cscale' makes everything smaller)
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floor_scale(.25)
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# make the Yendor challenge more interesting by first doing 50 steps down the tree
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yendor_backsteps(50) |