2e:null 2f:["$","title",null,{"children":"H3 Direction Reference | Nick Rabinowitz | Observable"}] 34:T40c,{ const ctx = DOM.context2d(width, height); const {lat, lng} = mapCenter; drawHexes(ctx, [center], {fill: 'cornsilk'}); function drawVerts(cell, color = 'red') { h3.cellToBoundary(cell).forEach((coord, i) => { const vert = coord.reverse(); const ctr = h3.cellToLatLng(cell).reverse(); // hacky way to move verts toward center of cell const [lng, lat] = midpoint( vert, midpoint(vert, ctr).geometry.coordinates ).geometry.coordinates; drawText(ctx, i, [lat, lng], {color, font: '18px Arial'}); }); } const isPentagon = h3.isPentagon(center); const edges = h3.originToDirectedEdges(center); edges.forEach((edge, i) => { const neighbor = h3.getDirectedEdgeDestination(edge); const neighborCenter = h3.cellToLatLng(neighbor); drawHexes(ctx, [neighbor]); drawText(ctx, isPentagon ? i + 2 : i + 1, neighborCenter); drawVerts(neighbor, 'blue'); }); drawVerts(center); const hexes = h3.gridDisk(center, 1); return ctx.canvas; }35:T2958,faceIjkBaseCells = [ [// face 0 [ // i 0 [[16, 0], [18, 0], [24, 0]], // j 0 [[33, 0], [30, 0], [32, 3]], // j 1 [[49, 1], [48, 3], [50, 3]] // j 2 ], [ // i 1 [[8, 0], [5, 5], [10, 5]], // j 0 [[22, 0], [16, 0], [18, 0]], // j 1 [[41, 1], [33, 0], [30, 0]] // j 2 ], [ // i 2 [[4, 0], [0, 5], [2, 5]], // j 0 [[15, 1], [8, 0], [5, 5]], // j 1 [[31, 1], [22, 0], [16, 0]] // j 2 ]], [// face 1 [ // i 0 [[2, 0], [6, 0], [14, 0]], // j 0 [[10, 0], [11, 0], [17, 3]], // j 1 [[24, 1], [23, 3], [25, 3]] // j 2 ], [ // i 1 [[0, 0], [1, 5], [9, 5]], // j 0 [[5, 0], [2, 0], [6, 0]], // j 1 [[18, 1], [10, 0], [11, 0]] // j 2 ], [ // i 2 [[4, 1], [3, 5], [7, 5]], // j 0 [[8, 1], [0, 0], [1, 5]], // j 1 [[16, 1], [5, 0], [2, 0]] // j 2 ]], [// face 2 [ // i 0 [[7, 0], [21, 0], [38, 0]], // j 0 [[9, 0], [19, 0], [34, 3]], // j 1 [[14, 1], [20, 3], [36, 3]] // j 2 ], [ // i 1 [[3, 0], [13, 5], [29, 5]], // j 0 [[1, 0], [7, 0], [21, 0]], // j 1 [[6, 1], [9, 0], [19, 0]] // j 2 ], [ // i 2 [[4, 2], [12, 5], [26, 5]], // j 0 [[0, 1], [3, 0], [13, 5]], // j 1 [[2, 1], [1, 0], [7, 0]] // j 2 ]], [// face 3 [ // i 0 [[26, 0], [42, 0], [58, 0]], // j 0 [[29, 0], [43, 0], [62, 3]], // j 1 [[38, 1], [47, 3], [64, 3]] // j 2 ], [ // i 1 [[12, 0], [28, 5], [44, 5]], // j 0 [[13, 0], [26, 0], [42, 0]], // j 1 [[21, 1], [29, 0], [43, 0]] // j 2 ], [ // i 2 [[4, 3], [15, 5], [31, 5]], // j 0 [[3, 1], [12, 0], [28, 5]], // j 1 [[7, 1], [13, 0], [26, 0]] // j 2 ]], [// face 4 [ // i 0 [[31, 0], [41, 0], [49, 0]], // j 0 [[44, 0], [53, 0], [61, 3]], // j 1 [[58, 1], [65, 3], [75, 3]] // j 2 ], [ // i 1 [[15, 0], [22, 5], [33, 5]], // j 0 [[28, 0], [31, 0], [41, 0]], // j 1 [[42, 1], [44, 0], [53, 0]] // j 2 ], [ // i 2 [[4, 4], [8, 5], [16, 5]], // j 0 [[12, 1], [15, 0], [22, 5]], // j 1 [[26, 1], [28, 0], [31, 0]] // j 2 ]], [// face 5 [ // i 0 [[50, 0], [48, 0], [49, 3]], // j 0 [[32, 0], [30, 3], [33, 3]], // j 1 [[24, 3], [18, 3], [16, 3]] // j 2 ], [ // i 1 [[70, 0], [67, 0], [66, 3]], // j 0 [[52, 3], [50, 0], [48, 0]], // j 1 [[37, 3], [32, 0], [30, 3]] // j 2 ], [ // i 2 [[83, 0], [87, 3], [85, 3]], // j 0 [[74, 3], [70, 0], [67, 0]], // j 1 [[57, 1], [52, 3], [50, 0]] // j 2 ]], [// face 6 [ // i 0 [[25, 0], [23, 0], [24, 3]], // j 0 [[17, 0], [11, 3], [10, 3]], // j 1 [[14, 3], [6, 3], [2, 3]] // j 2 ], [ // i 1 [[45, 0], [39, 0], [37, 3]], // j 0 [[35, 3], [25, 0], [23, 0]], // j 1 [[27, 3], [17, 0], [11, 3]] // j 2 ], [ // i 2 [[63, 0], [59, 3], [57, 3]], // j 0 [[56, 3], [45, 0], [39, 0]], // j 1 [[46, 3], [35, 3], [25, 0]] // j 2 ]], [// face 7 [ // i 0 [[36, 0], [20, 0], [14, 3]], // j 0 [[34, 0], [19, 3], [9, 3]], // j 1 [[38, 3], [21, 3], [7, 3]] // j 2 ], [ // i 1 [[55, 0], [40, 0], [27, 3]], // j 0 [[54, 3], [36, 0], [20, 0]], // j 1 [[51, 3], [34, 0], [19, 3]] // j 2 ], [ // i 2 [[72, 0], [60, 3], [46, 3]], // j 0 [[73, 3], [55, 0], [40, 0]], // j 1 [[71, 3], [54, 3], [36, 0]] // j 2 ]], [// face 8 [ // i 0 [[64, 0], [47, 0], [38, 3]], // j 0 [[62, 0], [43, 3], [29, 3]], // j 1 [[58, 3], [42, 3], [26, 3]] // j 2 ], [ // i 1 [[84, 0], [69, 0], [51, 3]], // j 0 [[82, 3], [64, 0], [47, 0]], // j 1 [[76, 3], [62, 0], [43, 3]] // j 2 ], [ // i 2 [[97, 0], [89, 3], [71, 3]], // j 0 [[98, 3], [84, 0], [69, 0]], // j 1 [[96, 3], [82, 3], [64, 0]] // j 2 ]], [// face 9 [ // i 0 [[75, 0], [65, 0], [58, 3]], // j 0 [[61, 0], [53, 3], [44, 3]], // j 1 [[49, 3], [41, 3], [31, 3]] // j 2 ], [ // i 1 [[94, 0], [86, 0], [76, 3]], // j 0 [[81, 3], [75, 0], [65, 0]], // j 1 [[66, 3], [61, 0], [53, 3]] // j 2 ], [ // i 2 [[107, 0], [104, 3], [96, 3]], // j 0 [[101, 3], [94, 0], [86, 0]], // j 1 [[85, 3], [81, 3], [75, 0]] // j 2 ]], [// face 10 [ // i 0 [[57, 0], [59, 0], [63, 3]], // j 0 [[74, 0], [78, 3], [79, 3]], // j 1 [[83, 3], [92, 3], [95, 3]] // j 2 ], [ // i 1 [[37, 0], [39, 3], [45, 3]], // j 0 [[52, 0], [57, 0], [59, 0]], // j 1 [[70, 3], [74, 0], [78, 3]] // j 2 ], [ // i 2 [[24, 0], [23, 3], [25, 3]], // j 0 [[32, 3], [37, 0], [39, 3]], // j 1 [[50, 3], [52, 0], [57, 0]] // j 2 ]], [// face 11 [ // i 0 [[46, 0], [60, 0], [72, 3]], // j 0 [[56, 0], [68, 3], [80, 3]], // j 1 [[63, 3], [77, 3], [90, 3]] // j 2 ], [ // i 1 [[27, 0], [40, 3], [55, 3]], // j 0 [[35, 0], [46, 0], [60, 0]], // j 1 [[45, 3], [56, 0], [68, 3]] // j 2 ], [ // i 2 [[14, 0], [20, 3], [36, 3]], // j 0 [[17, 3], [27, 0], [40, 3]], // j 1 [[25, 3], [35, 0], [46, 0]] // j 2 ]], [// face 12 [ // i 0 [[71, 0], [89, 0], [97, 3]], // j 0 [[73, 0], [91, 3], [103, 3]], // j 1 [[72, 3], [88, 3], [105, 3]] // j 2 ], [ // i 1 [[51, 0], [69, 3], [84, 3]], // j 0 [[54, 0], [71, 0], [89, 0]], // j 1 [[55, 3], [73, 0], [91, 3]] // j 2 ], [ // i 2 [[38, 0], [47, 3], [64, 3]], // j 0 [[34, 3], [51, 0], [69, 3]], // j 1 [[36, 3], [54, 0], [71, 0]] // j 2 ]], [// face 13 [ // i 0 [[96, 0], [104, 0], [107, 3]], // j 0 [[98, 0], [110, 3], [115, 3]], // j 1 [[97, 3], [111, 3], [119, 3]] // j 2 ], [ // i 1 [[76, 0], [86, 3], [94, 3]], // j 0 [[82, 0], [96, 0], [104, 0]], // j 1 [[84, 3], [98, 0], [110, 3]] // j 2 ], [ // i 2 [[58, 0], [65, 3], [75, 3]], // j 0 [[62, 3], [76, 0], [86, 3]], // j 1 [[64, 3], [82, 0], [96, 0]] // j 2 ]], [// face 14 [ // i 0 [[85, 0], [87, 0], [83, 3]], // j 0 [[101, 0], [102, 3], [100, 3]], // j 1 [[107, 3], [112, 3], [114, 3]] // j 2 ], [ // i 1 [[66, 0], [67, 3], [70, 3]], // j 0 [[81, 0], [85, 0], [87, 0]], // j 1 [[94, 3], [101, 0], [102, 3]] // j 2 ], [ // i 2 [[49, 0], [48, 3], [50, 3]], // j 0 [[61, 3], [66, 0], [67, 3]], // j 1 [[75, 3], [81, 0], [85, 0]] // j 2 ]], [// face 15 [ // i 0 [[95, 0], [92, 0], [83, 0]], // j 0 [[79, 0], [78, 0], [74, 3]], // j 1 [[63, 1], [59, 3], [57, 3]] // j 2 ], [ // i 1 [[109, 0], [108, 0], [100, 5]], // j 0 [[93, 1], [95, 0], [92, 0]], // j 1 [[77, 1], [79, 0], [78, 0]] // j 2 ], [ // i 2 [[117, 4], [118, 5], [114, 5]], // j 0 [[106, 1], [109, 0], [108, 0]], // j 1 [[90, 1], [93, 1], [95, 0]] // j 2 ]], [// face 16 [ // i 0 [[90, 0], [77, 0], [63, 0]], // j 0 [[80, 0], [68, 0], [56, 3]], // j 1 [[72, 1], [60, 3], [46, 3]] // j 2 ], [ // i 1 [[106, 0], [93, 0], [79, 5]], // j 0 [[99, 1], [90, 0], [77, 0]], // j 1 [[88, 1], [80, 0], [68, 0]] // j 2 ], [ // i 2 [[117, 3], [109, 5], [95, 5]], // j 0 [[113, 1], [106, 0], [93, 0]], // j 1 [[105, 1], [99, 1], [90, 0]] // j 2 ]], [// face 17 [ // i 0 [[105, 0], [88, 0], [72, 0]], // j 0 [[103, 0], [91, 0], [73, 3]], // j 1 [[97, 1], [89, 3], [71, 3]] // j 2 ], [ // i 1 [[113, 0], [99, 0], [80, 5]], // j 0 [[116, 1], [105, 0], [88, 0]], // j 1 [[111, 1], [103, 0], [91, 0]] // j 2 ], [ // i 2 [[117, 2], [106, 5], [90, 5]], // j 0 [[121, 1], [113, 0], [99, 0]], // j 1 [[119, 1], [116, 1], [105, 0]] // j 2 ]], [// face 18 [ // i 0 [[119, 0], [111, 0], [97, 0]], // j 0 [[115, 0], [110, 0], [98, 3]], // j 1 [[107, 1], [104, 3], [96, 3]] // j 2 ], [ // i 1 [[121, 0], [116, 0], [103, 5]], // j 0 [[120, 1], [119, 0], [111, 0]], // j 1 [[112, 1], [115, 0], [110, 0]] // j 2 ], [ // i 2 [[117, 1], [113, 5], [105, 5]], // j 0 [[118, 1], [121, 0], [116, 0]], // j 1 [[114, 1], [120, 1], [119, 0]] // j 2 ]], [// face 19 [ // i 0 [[114, 0], [112, 0], [107, 0]], // j 0 [[100, 0], [102, 0], [101, 3]], // j 1 [[83, 1], [87, 3], [85, 3]] // j 2 ], [ // i 1 [[118, 0], [120, 0], [115, 5]], // j 0 [[108, 1], [114, 0], [112, 0]], // j 1 [[92, 1], [100, 0], [102, 0]] // j 2 ], [ // i 2 [[117, 0], [121, 5], [119, 5]], // j 0 [[109, 1], [118, 0], [120, 0]], // j 1 [[95, 1], [108, 1], [114, 0]] // j 2 ]]]36:T1963, baseCellData = [ [[1, [1, 0, 0]], 0, [0, 0]], // base cell 0 [[2, [1, 1, 0]], 0, [0, 0]], // base cell 1 [[1, [0, 0, 0]], 0, [0, 0]], // base cell 2 [[2, [1, 0, 0]], 0, [0, 0]], // base cell 3 [[0, [2, 0, 0]], 1, [-1, -1]], // base cell 4 [[1, [1, 1, 0]], 0, [0, 0]], // base cell 5 [[1, [0, 0, 1]], 0, [0, 0]], // base cell 6 [[2, [0, 0, 0]], 0, [0, 0]], // base cell 7 [[0, [1, 0, 0]], 0, [0, 0]], // base cell 8 [[2, [0, 1, 0]], 0, [0, 0]], // base cell 9 [[1, [0, 1, 0]], 0, [0, 0]], // base cell 10 [[1, [0, 1, 1]], 0, [0, 0]], // base cell 11 [[3, [1, 0, 0]], 0, [0, 0]], // base cell 12 [[3, [1, 1, 0]], 0, [0, 0]], // base cell 13 [[11, [2, 0, 0]], 1, [2, 6]], // base cell 14 [[4, [1, 0, 0]], 0, [0, 0]], // base cell 15 [[0, [0, 0, 0]], 0, [0, 0]], // base cell 16 [[6, [0, 1, 0]], 0, [0, 0]], // base cell 17 [[0, [0, 0, 1]], 0, [0, 0]], // base cell 18 [[2, [0, 1, 1]], 0, [0, 0]], // base cell 19 [[7, [0, 0, 1]], 0, [0, 0]], // base cell 20 [[2, [0, 0, 1]], 0, [0, 0]], // base cell 21 [[0, [1, 1, 0]], 0, [0, 0]], // base cell 22 [[6, [0, 0, 1]], 0, [0, 0]], // base cell 23 [[10, [2, 0, 0]], 1, [1, 5]], // base cell 24 [[6, [0, 0, 0]], 0, [0, 0]], // base cell 25 [[3, [0, 0, 0]], 0, [0, 0]], // base cell 26 [[11, [1, 0, 0]], 0, [0, 0]], // base cell 27 [[4, [1, 1, 0]], 0, [0, 0]], // base cell 28 [[3, [0, 1, 0]], 0, [0, 0]], // base cell 29 [[0, [0, 1, 1]], 0, [0, 0]], // base cell 30 [[4, [0, 0, 0]], 0, [0, 0]], // base cell 31 [[5, [0, 1, 0]], 0, [0, 0]], // base cell 32 [[0, [0, 1, 0]], 0, [0, 0]], // base cell 33 [[7, [0, 1, 0]], 0, [0, 0]], // base cell 34 [[11, [1, 1, 0]], 0, [0, 0]], // base cell 35 [[7, [0, 0, 0]], 0, [0, 0]], // base cell 36 [[10, [1, 0, 0]], 0, [0, 0]], // base cell 37 [[12, [2, 0, 0]], 1, [3, 7]], // base cell 38 [[6, [1, 0, 1]], 0, [0, 0]], // base cell 39 [[7, [1, 0, 1]], 0, [0, 0]], // base cell 40 [[4, [0, 0, 1]], 0, [0, 0]], // base cell 41 [[3, [0, 0, 1]], 0, [0, 0]], // base cell 42 [[3, [0, 1, 1]], 0, [0, 0]], // base cell 43 [[4, [0, 1, 0]], 0, [0, 0]], // base cell 44 [[6, [1, 0, 0]], 0, [0, 0]], // base cell 45 [[11, [0, 0, 0]], 0, [0, 0]], // base cell 46 [[8, [0, 0, 1]], 0, [0, 0]], // base cell 47 [[5, [0, 0, 1]], 0, [0, 0]], // base cell 48 [[14, [2, 0, 0]], 1, [0, 9]], // base cell 49 [[5, [0, 0, 0]], 0, [0, 0]], // base cell 50 [[12, [1, 0, 0]], 0, [0, 0]], // base cell 51 [[10, [1, 1, 0]], 0, [0, 0]], // base cell 52 [[4, [0, 1, 1]], 0, [0, 0]], // base cell 53 [[12, [1, 1, 0]], 0, [0, 0]], // base cell 54 [[7, [1, 0, 0]], 0, [0, 0]], // base cell 55 [[11, [0, 1, 0]], 0, [0, 0]], // base cell 56 [[10, [0, 0, 0]], 0, [0, 0]], // base cell 57 [[13, [2, 0, 0]], 1, [4, 8]], // base cell 58 [[10, [0, 0, 1]], 0, [0, 0]], // base cell 59 [[11, [0, 0, 1]], 0, [0, 0]], // base cell 60 [[9, [0, 1, 0]], 0, [0, 0]], // base cell 61 [[8, [0, 1, 0]], 0, [0, 0]], // base cell 62 [[6, [2, 0, 0]], 1, [11, 15]], // base cell 63 [[8, [0, 0, 0]], 0, [0, 0]], // base cell 64 [[9, [0, 0, 1]], 0, [0, 0]], // base cell 65 [[14, [1, 0, 0]], 0, [0, 0]], // base cell 66 [[5, [1, 0, 1]], 0, [0, 0]], // base cell 67 [[16, [0, 1, 1]], 0, [0, 0]], // base cell 68 [[8, [1, 0, 1]], 0, [0, 0]], // base cell 69 [[5, [1, 0, 0]], 0, [0, 0]], // base cell 70 [[12, [0, 0, 0]], 0, [0, 0]], // base cell 71 [[7, [2, 0, 0]], 1, [12, 16]], // base cell 72 [[12, [0, 1, 0]], 0, [0, 0]], // base cell 73 [[10, [0, 1, 0]], 0, [0, 0]], // base cell 74 [[9, [0, 0, 0]], 0, [0, 0]], // base cell 75 [[13, [1, 0, 0]], 0, [0, 0]], // base cell 76 [[16, [0, 0, 1]], 0, [0, 0]], // base cell 77 [[15, [0, 1, 1]], 0, [0, 0]], // base cell 78 [[15, [0, 1, 0]], 0, [0, 0]], // base cell 79 [[16, [0, 1, 0]], 0, [0, 0]], // base cell 80 [[14, [1, 1, 0]], 0, [0, 0]], // base cell 81 [[13, [1, 1, 0]], 0, [0, 0]], // base cell 82 [[5, [2, 0, 0]], 1, [10, 19]], // base cell 83 [[8, [1, 0, 0]], 0, [0, 0]], // base cell 84 [[14, [0, 0, 0]], 0, [0, 0]], // base cell 85 [[9, [1, 0, 1]], 0, [0, 0]], // base cell 86 [[14, [0, 0, 1]], 0, [0, 0]], // base cell 87 [[17, [0, 0, 1]], 0, [0, 0]], // base cell 88 [[12, [0, 0, 1]], 0, [0, 0]], // base cell 89 [[16, [0, 0, 0]], 0, [0, 0]], // base cell 90 [[17, [0, 1, 1]], 0, [0, 0]], // base cell 91 [[15, [0, 0, 1]], 0, [0, 0]], // base cell 92 [[16, [1, 0, 1]], 0, [0, 0]], // base cell 93 [[9, [1, 0, 0]], 0, [0, 0]], // base cell 94 [[15, [0, 0, 0]], 0, [0, 0]], // base cell 95 [[13, [0, 0, 0]], 0, [0, 0]], // base cell 96 [[8, [2, 0, 0]], 1, [13, 17]], // base cell 97 [[13, [0, 1, 0]], 0, [0, 0]], // base cell 98 [[17, [1, 0, 1]], 0, [0, 0]], // base cell 99 [[19, [0, 1, 0]], 0, [0, 0]], // base cell 100 [[14, [0, 1, 0]], 0, [0, 0]], // base cell 101 [[19, [0, 1, 1]], 0, [0, 0]], // base cell 102 [[17, [0, 1, 0]], 0, [0, 0]], // base cell 103 [[13, [0, 0, 1]], 0, [0, 0]], // base cell 104 [[17, [0, 0, 0]], 0, [0, 0]], // base cell 105 [[16, [1, 0, 0]], 0, [0, 0]], // base cell 106 [[9, [2, 0, 0]], 1, [14, 18]], // base cell 107 [[15, [1, 0, 1]], 0, [0, 0]], // base cell 108 [[15, [1, 0, 0]], 0, [0, 0]], // base cell 109 [[18, [0, 1, 1]], 0, [0, 0]], // base cell 110 [[18, [0, 0, 1]], 0, [0, 0]], // base cell 111 [[19, [0, 0, 1]], 0, [0, 0]], // base cell 112 [[17, [1, 0, 0]], 0, [0, 0]], // base cell 113 [[19, [0, 0, 0]], 0, [0, 0]], // base cell 114 [[18, [0, 1, 0]], 0, [0, 0]], // base cell 115 [[18, [1, 0, 1]], 0, [0, 0]], // base cell 116 [[19, [2, 0, 0]], 1, [-1, -1]], // base cell 117 [[19, [1, 0, 0]], 0, [0, 0]], // base cell 118 [[18, [0, 0, 0]], 0, [0, 0]], // base cell 119 [[19, [1, 0, 1]], 0, [0, 0]], // base cell 120 [[18, [1, 0, 0]], 0, [0, 0]] // base cell 121 ];37:T564,pentagonChildFacesRes1 = ({ "81093ffffffffff": 2, "81097ffffffffff": 1, "8109bffffffffff": 3, "8108bffffffffff": 4, "8108fffffffffff": 0, "811cbffffffffff": 6, "811cfffffffffff": 11, "811d3ffffffffff": 2, "811d7ffffffffff": 7, "811dbffffffffff": 1, "81317ffffffffff": 6, "8131bffffffffff": 0, "8130bffffffffff": 5, "8130fffffffffff": 10, "81313ffffffffff": 1, "814d7ffffffffff": 8, "814dbffffffffff": 2, "814cbffffffffff": 7, "814cfffffffffff": 12, "814d3ffffffffff": 3, "8162bffffffffff": 9, "8162fffffffffff": 14, "81633ffffffffff": 0, "81637ffffffffff": 5, "8163bffffffffff": 4, "8175bffffffffff": 3, "8174bffffffffff": 8, "8174fffffffffff": 13, "81753ffffffffff": 4, "81757ffffffffff": 9, "817ebffffffffff": 11, "817efffffffffff": 6, "817f3ffffffffff": 15, "817f7ffffffffff": 10, "817fbffffffffff": 16, "8191bffffffffff": 17, "8190bffffffffff": 12, "8190fffffffffff": 7, "81913ffffffffff": 16, "81917ffffffffff": 11, "81a6bffffffffff": 10, "81a6fffffffffff": 5, "81a73ffffffffff": 19, "81a77ffffffffff": 14, "81a7bffffffffff": 15, "81c2bffffffffff": 13, "81c2fffffffffff": 8, "81c33ffffffffff": 17, "81c37ffffffffff": 12, "81c3bffffffffff": 18, "81d7bffffffffff": 19, "81d6bffffffffff": 14, "81d6fffffffffff": 9, "81d73ffffffffff": 18, "81d77ffffffffff": 13, "81eafffffffffff": 19, "81eb3ffffffffff": 17, "81eb7ffffffffff": 18, "81ebbffffffffff": 16, "81eabffffffffff": 15, })38:T653,pentagonChildFacesRes2 = ({ "820817fffffffff": 4, "82081ffffffffff": 0, "820827fffffffff": 2, "82082ffffffffff": 1, "820837fffffffff": 3, "821c37fffffffff": 1, "821c17fffffffff": 6, "821c1ffffffffff": 11, "821c27fffffffff": 2, "821c2ffffffffff": 7, "82301ffffffffff": 10, "823027fffffffff": 1, "82302ffffffffff": 6, "823037fffffffff": 0, "823017fffffffff": 5, "824c1ffffffffff": 12, "824c27fffffffff": 3, "824c2ffffffffff": 8, "824c37fffffffff": 2, "824c17fffffffff": 7, "826237fffffffff": 4, "826217fffffffff": 9, "82621ffffffffff": 14, "826227fffffffff": 0, "82622ffffffffff": 5, "827427fffffffff": 4, "82742ffffffffff": 9, "827437fffffffff": 3, "827417fffffffff": 8, "82741ffffffffff": 13, "827e37fffffffff": 16, "827e17fffffffff": 11, "827e1ffffffffff": 6, "827e27fffffffff": 15, "827e2ffffffffff": 10, "829027fffffffff": 16, "82902ffffffffff": 11, "829037fffffffff": 17, "829017fffffffff": 12, "82901ffffffffff": 7, "82a617fffffffff": 10, "82a61ffffffffff": 5, "82a627fffffffff": 19, "82a62ffffffffff": 14, "82a637fffffffff": 15, "82c217fffffffff": 13, "82c21ffffffffff": 8, "82c227fffffffff": 17, "82c22ffffffffff": 12, "82c237fffffffff": 18, "82d627fffffffff": 18, "82d62ffffffffff": 13, "82d637fffffffff": 19, "82d617fffffffff": 14, "82d61ffffffffff": 9, "82ea17fffffffff": 15, "82ea1ffffffffff": 19, "82ea27fffffffff": 17, "82ea2ffffffffff": 18, "82ea37fffffffff": 16 })39:T68c,baseCellVertexRotations = { const pentChildFaces = pentagonChildFacesRes2; const rotations = []; for (let b = 0; b < 122; b++) { rotations[b] = {}; } // Standard rotations for (let face = 0; face < faceIjkBaseCells.length; face++) { for (let i = 0; i < 3; i++) for (let j = 0; j < 3; j++) for (let k = 0; k < 3; k++) { const [base, rot] = faceIjkBaseCells[face][i][j][k]; // if (!baseCellData[base][1]) rotations[base][face] = rot; } } // convert the objects to lists of tuples const rotationSets = rotations.map(faces => Object.keys(faces).map(face => [Number(face), faces[face]])); // Not sure why pentagon rotations are what they are, so find them empirically Object.keys(pentChildFaces).map(h3Index => { const bnd = h3.cellToBoundary(h3Index); if (bnd.length > 6) throw new Error('too many vertexes'); const baseCell = h3.getBaseCellNumber(h3Index); const face = pentChildFaces[h3Index]; const edges = h3.originToDirectedEdges(h3Index); const [edgeLat, edgeLng] = h3.directedEdgeToBoundary(edges[0])[0]; for (let vertex = 0; vertex < bnd.length; vertex++) { const [vLat, vLng] = bnd[vertex]; if (vLat === edgeLat && vLng === edgeLng) { // the 0-rotation vertex is 3; rotate the vertex num to 3 to get the rotations const rot = (6 + 3 - vertex) % 6; if (rotationSets[baseCell].find(([f, r]) => f === face)[1] - rot === -1) console.log(baseCell, face) rotationSets[baseCell].push([face, rot]); return; } } throw new Error('vertex not found'); }); return rotationSets; }3a:[] 32:{"id":"d37332c84f483cb6","slug":"h3-direction-reference","title":"H3 Direction Reference","thumbnail":"ab80f62712dda54c77b334de8d849fb8f39973061e30ee79c6b1c1e9b20a2903","access_level":"public","create_time":"$D2020-08-11T17:59:28.369Z","update_time":"$D2023-01-04T18:53:55.956Z","view_time":null,"first_public_time":"$D2020-08-11T18:34:57.471Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"121dc539a6e3e282","login":"nrabinowitz","name":"Nick Rabinowitz","avatar_url":"https://avatars-next.observableusercontent.com/af324aa7e7df8e450fdb6d331ddc6b2d2c5bb804c04b52a174bc6e0db88872e8","tier":"starter_2024"},"version":423,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"8eeacd6e693d83a2","login":"nrabinowitz","name":"Nick Rabinowitz","avatar_url":"https://avatars-next.observableusercontent.com/af324aa7e7df8e450fdb6d331ddc6b2d2c5bb804c04b52a174bc6e0db88872e8","tier":null}],"members":[{"type":"individual","id":"8eeacd6e693d83a2","login":"nrabinowitz","name":"Nick Rabinowitz","avatar_url":"https://avatars-next.observableusercontent.com/af324aa7e7df8e450fdb6d331ddc6b2d2c5bb804c04b52a174bc6e0db88872e8","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":2,"collection":null,"type":"notebook","body":{"title":"H3 Direction Reference","cells":[{"id":0,"value":"md`# H3 Direction Reference`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":30,"value":"$34","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":76,"value":"md`*center*: ${center} | *cell face*: ${h3.getIcosahedronFaces(center).join(',')} | *base face*: ${baseData.face} | *base cell*: ${baseCell} | *CW rotations*: ${baseCellRotations}`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":67,"value":"viewof sliderLat = slider({\n min: -89, \n max: 89, \n step: 1, \n value: h3Index ? h3.h3ToGeo(h3Index)[0] : 39, \n title: \"Latitude\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":68,"value":"viewof sliderLng = slider({\n min: -179, \n max: 179, \n step: 1, \n value: h3Index ? h3.h3ToGeo(h3Index)[1] : 30, \n title: \"Longitude\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":96,"value":"viewof res = slider({\n min: 0, \n max: 15, \n step: 1, \n value: h3Index ? h3.h3GetResolution(h3Index) : 2, \n title: \"Res\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":184,"value":"viewof h3Index = text({title: \"Jump to specific index\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":11,"value":"md`## Config`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":34,"value":"height = width * 0.5","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":14,"value":"mapCenter = ({lat: sliderLat, lng: sliderLng})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":81,"value":"center = h3.latLngToCell(mapCenter.lat, mapCenter.lng, res)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":146,"value":"baseCell = h3.getBaseCellNumber(center)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":154,"value":"baseData = {\n const [[face, [i, j, k]], isPentagon] = baseCellData[baseCell];\n return {face, i, j, k, isPentagon};\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":151,"value":"baseCellRotations = {\n const cellFace = h3.getIcosahedronFaces(center)[0];\n const baseFace = baseData.face;\n if (cellFace === baseFace) return 0;\n // Find the rotation into the baseCell from the cell face. I wish this was easier.\n const baseCells = faceIjkBaseCells[cellFace];\n for (let i = 0; i < 3; i++)\n for (let j = 0; j < 3; j++)\n for (let k = 0; k < 3; k++)\n if (baseCells[i][j][k][0] === baseCell)\n return baseCells[i][j][k][1];\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":24,"value":"md`## Utils`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":326,"value":"projectionGnomonic = {\n const [lat, lng] = h3.cellToLatLng(center);\n const projection = d3.geoGnomonic()\n .scale(width * Math.pow(Math.sqrt(7), res) * 0.4)\n .translate([width / 2, height / 2])\n .clipAngle(90 - 1e-4)\n .clipExtent([[0, 0], [width, height]])\n .precision(0.2)\n .rotate([-lng, -lat, 0]);\n return projection;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":38,"value":"scales = {\n const ratio = width / height;\n const {lat, lng} = mapCenter;\n // 180 / res * x = n\n const xDegrees = 180 / Math.pow(2.5, res) * 0.4;\n const x = d3\n .scaleLinear()\n .domain([lng - xDegrees, lng + xDegrees])\n .range([0, width]);\n const y = d3\n .scaleLinear()\n .domain([lat - xDegrees / ratio, lat + xDegrees / ratio])\n .range([height, 0]);\n return {x, y};\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":28,"value":"function drawHexes(ctx, hexes, styles = {}) {\n const line = d3.line().context(ctx);\n const {fill = \"#eee\", stroke = \"#666\"} = styles;\n \n ctx.beginPath();\n hexes.forEach(hex => {\n line(\n h3.cellToBoundary(hex, true).reverse()\n .map(projectionGnomonic)\n )\n });\n ctx.fillStyle = fill;\n ctx.fill();\n ctx.lineWidth = 2 - 0.15 * res;\n ctx.strokeStyle = stroke;\n ctx.stroke();\n ctx.closePath();\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":56,"value":"function drawText(ctx, text, coord, styles = {}) {\n const {color = 'black', font = '30px Arial'} = styles;\n const [x, y] = projectionGnomonic(coord.reverse());\n ctx.font = font;\n ctx.fillStyle = color;\n ctx.textAlign = 'center';\n ctx.textBaseline = 'middle';\n ctx.fillText(text, x, y);\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":114,"value":"md`## Data\n\n(taken from the H3 lib)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":128,"value":"md`Given the face number and a resolution 0 ijk+ coordinate in that face's\nface-centered ijk coordinate system, gives the base cell located at that\ncoordinate and the number of 60 ccw rotations to rotate into that base\ncell's orientation.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":117,"value":"$35","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":132,"value":"md`For each base cell, gives the \"home\" face and ijk+ coordinates on that face,\nwhether or not the base cell is a pentagon. Additionally, if the base cell\nis a pentagon, the two cw offset rotation adjacent faces are given (-1\nindicates that no cw offset rotation faces exist for this base cell).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":124,"value":"$36","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":229,"value":"md`For each pentagon ring at res 2, get the face of each child. Res 2 was chosen because the children are unambiguously on a single face.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":278,"value":"$37","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":226,"value":"$38","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":233,"value":"md`Make a table of rotations. For each base cell, determine the vertex rotations on each face.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":234,"value":"$39","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":260,"value":"formattedRotations = {\n return baseCellVertexRotations.map((baseCell, i) => `{${\n [0,1,2,3,4].map(i => baseCell[i] ? `{${baseCell[i].join(', ')}}` : `{0}`).join(', ')\n }}, // base cell ${i}`).join('\\n')\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":298,"value":"failureDataRes4 = `84082b7ffffffff\n0\n841c2b7ffffffff\n11\n84302b7ffffffff\n10\n844c2b7ffffffff\n12\n84622b7ffffffff\n14\n84742b7ffffffff\n13\n847e2b7ffffffff\n6\n84902b7ffffffff\n7\n84a62b7ffffffff\n5\n84c22b7ffffffff\n8\n84d62b7ffffffff\n9\n84ea2b7ffffffff\n19`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":305,"value":"failureDataRes5 = `85081ecbfffffff\n4\n85081ed3fffffff\n4\n85081edbfffffff\n4\n85082b63fffffff\n0\n85082b67fffffff\n0\n85082b6bfffffff\n0\n85082b6ffffffff\n0\n851c1ecbfffffff\n6\n851c1ed3fffffff\n6\n851c1edbfffffff\n6\n851c2b63fffffff\n11\n851c2b67fffffff\n11\n851c2b6bfffffff\n11\n851c2b6ffffffff\n11\n85ea1ecbfffffff\n15\n85ea1ed3fffffff\n15\n85ea1edbfffffff\n15\n85ea2b63fffffff\n19\n85ea2b67fffffff\n19\n85ea2b6bfffffff\n19\n85ea2b6ffffffff\n19`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":292,"value":"res4Failures = {\n const input = failureDataRes5.split('\\n');\n const out = [];\n for (let i = 0; i < input.length; i += 2) {\n const h3Index = input[i];\n const baseCell = h3.getBaseCellNumber(h3Index);\n const [[face]] = baseCellData[baseCell];\n out.push({cell: h3Index, baseFace: face, face: Number(input[i + 1])}) \n }\n return out;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":5,"value":"md`## Dependencies`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"h3 = require('h3-js')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":17,"value":"d3 = require('d3')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":89,"value":"import {slider, text} from \"@jashkenas/inputs\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":198,"value":"import {fixTransmeridian} from '@nrabinowitz/mapbox-utils'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":367,"value":"midpoint = (await import('https://unpkg.com/@turf/midpoint@6.5.0/dist/es/index.js?module')).default","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W3a","stdlib":"1","titling":"auto"}} 33:"$32:body"