28:null 29:["$","title",null,{"children":"Lichen Patterns | Ajay | Observable"}] 2e:T29c3,Visualization = { let view = DOM.svg(width, height * 2); let svg = d3 .select(view) .attr('id', DOM.uid().id) .attr('viewBox', [0, height / 2, width, height]); yield view; var ps = lichen .circles() .spacings([1, 2, 3]) .get(); var topBackground = svg.append("g"); topBackground .append("rect") .attr("width", width) .attr("height", 50) .attr( "fill", lichen .hexagon() .stroke("#ddd") .strokeWidth(1) .radius(40) .angle(20) .spacing(0) .fill("none") .use() ); var r = 225; var arc = d3 .arc() .innerRadius(r) .outerRadius(r + 20) .startAngle(0) .endAngle(2 * Math.PI); var chevronData = [ { a: 40, currentA: 40, f: "#eaeaea", o: 0.12 }, { a: 30, currentA: 30, f: "#eee", o: 0.15 }, { a: 20, f: "#ddd", o: 0.20 }, { a: 10, f: "#cacaca", o: 0.25 } ]; var chevrons = chevronArc() .outerRadius(r) .innerRadius(r - 60) .startAngle(function(d) { return (-d.a / 180) * Math.PI; }) .endAngle(function(d) { return (d.a / 180) * Math.PI; }) .startIndent(-12) .endIndent(12); var control = svg .append("g") .attr("transform", "translate(480,250)") .call( d3 .drag() .on("drag", dragged) .on("start", mouseover) .on("end", mouseout) ); control .selectAll(".chevrons") .data(chevronData) .enter() .append("path") .attr("d", chevrons) .attr("class", "chevrons") .attr("fill", "#555") .attr("opacity", function(d) { return d.o; }) .on("mouseover", mouseover) .on("mouseout", mouseout); var patterns = [ { type: "circle", fill: lichen.circle(), options: ["spacing", "radius", "strokeWidth"], grid: ["hex", "square"] }, { type: "square", fill: lichen.square(), options: ["spacing", "length", "strokeWidth"], grid: ["hex", "square"] }, { type: "hexagon", fill: lichen.hexagon(), options: ["spacing", "radius", "strokeWidth"], grid: ["hex", "square"] }, { type: "symbol", fill: lichen.symbol(), options: ["spacing", "strokeWidth"], grid: ["hex", "square"] }, { type: "checker", fill: lichen.checker(), options: ["width"] }, { type: "letter", fill: lichen.text(), options: ["spacing", "strokeWidth", "fontSize"], grid: ["hex", "square"] }, { type: "sine", fill: lichen.sine(), options: ["amplitude", "period", "strokeWidth", "sampling"] }, { type: "stripe", fill: lichen.stripe(), options: ["width"] }, { type: "octagon", fill: lichen.octagon(), options: ["strokeWidth", "length"] }, { type: "plaid", fill: lichen.plaid(), options: ["width"] }, { type: "cairo", fill: lichen.cairo(), options: ["length", "strokeWidth"] }, { type: "fish", fill: lichen.fish(), options: ["spacing", "scale"], grid: ["hex", "square"] } ]; var currentPattern = patterns[Math.floor(Math.random() * patterns.length)]; svg .append("text") .attr("y", 80) .attr("x", 150) .style("font-size", 24) .style("text-anchor", "middle") .text("Selected Base Patterns"); svg .append("text") .attr("y", 80) .attr("x", 760) .style("font-size", 24) .style("text-anchor", "middle") .text("Selected Pattern Methods"); svg .append("text") .attr("y", 30) .attr("x", 480) .style("font-size", 24) .style("text-anchor", "middle") .text("lichen.js Pattern Explorer"); var pattern = svg .append("circle") .attr("r", 140) .attr("fill", currentPattern.fill.use()) .attr("stroke", "black") .attr("stroke-width", 8) .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); var showcase = svg .selectAll() .data(patterns) .enter() .append("circle") .attr("cx", function(d, i) { return (i % 3) * 100 + 50; }) .attr("cy", function(d, i) { return Math.floor(i / 3) * 100 + 150; }) .attr("r", 40) .attr("fill", function(d) { return d.fill.use(); }) .attr("stroke", "black") .attr("stroke-width", 3) .attr("class", "menu") .on("click", function(d) { currentPattern = d; pattern.attr("fill", currentPattern.fill.use()); showOptions(d); }); var scales = { spacing: d3 .scaleLinear() .range([0, 200]) .domain([-5, 40]), radius: d3 .scaleLinear() .range([0, 200]) .domain([0, 40]), length: d3 .scaleLinear() .range([0, 200]) .domain([0, 40]), strokeWidth: d3 .scaleLinear() .range([0, 200]) .domain([0, 10]), width: d3 .scaleLinear() .range([0, 200]) .domain([0, 80]), amplitude: d3 .scaleLinear() .range([0, 200]) .domain([0, 80]), period: d3 .scaleLinear() .range([0, 200]) .domain([0, 200]), sampling: d3 .scaleLinear() .range([0, 200]) .domain([0.01, 5]), scale: d3 .scaleLinear() .range([0, 200]) .domain([0.1, 5]), fontSize: d3 .scaleLinear() .range([0, 200]) .domain([8, 32]) }; showOptions(currentPattern); function showOptions(p) { svg .selectAll(".currentName") .attr("opacity", 1) .transition() .attr("opacity", 0) .duration(200) .remove(); svg .append("text") .attr("class", "currentName") .attr("x", 750) .attr("y", 110) .attr("opacity", 0) .text("lichen." + p.type + "()") .transition() .attr("opacity", 1) .duration(200) .delay(200); var options = svg.selectAll(".options").data(p.options); options .exit() .transition() .attr("opacity", 0) .duration(500) .remove(); var options = options .enter() .append("g") .merge(options) .attr("transform", function(d, i) { return "translate(" + 700 + "," + (i * 80 + 180) + ")"; }) .attr("class", "options"); options .selectAll("*") .transition() .attr("opacity", 0) .duration(200) .remove(); options .append("line") .attr("x1", 100) .attr("x2", 100) .attr("stroke-width", 3) .attr("stroke", "grey") .transition() .delay(200) .attr("x1", 0) .attr("x2", 200) .duration(400); options .append("text") .attr("x", 100) .attr("y", -20) .style("text-anchor", "middle") .text(function(d) { return d; }); options .append("circle") .attr("cy", 0) .attr("r", 8) .attr("cx", function(d) { var current = p.fill[d](); return scales[d](current); }) .attr("opacity", 0) .call(d3.drag().on("drag", dragValue)) .style("cursor", "pointer") .transition() .attr("opacity", 1) .delay(250) .duration(300); if (p.grid != undefined) { var grids = svg.selectAll(".grids").data(p.grid); var offset = (p.grid.length * 50) / 2; grids.exit().remove(); grids .enter() .append("text") .merge(grids) .text(function(d) { return d; }) .attr("x", function(d, i) { return i * 50 + 480 - offset; }) .attr("y", 480) .attr("class", "grids") .on("click", function(d) { if (d == "hex") currentPattern.fill.hex(true).add(); else currentPattern.fill.hex(false).add(); }); svg .append("text") .attr("x", 480) .attr("y", 450) .style("text-anchor", "middle") .text("grid options") .attr("class", "grids"); } else { svg.selectAll(".grids").remove(); } } function mouseout(d) { d3.selectAll(".chevrons") .filter(function(d) { return d.o < 0.2; }) .transition() .attr("fill", "#555") .attrTween("d", function(d) { var node = this; var interpolate = d3.interpolate(d.currentA, d.a); return function(t) { var v = interpolate(t); d.currentA = v; return chevrons({ a: v }); }; }) .duration(2000); } function mouseover(d) { d3.selectAll(".chevrons") .filter(function(d) { return d.o < 0.2; }) .transition() .attr("fill", "orange") .attrTween("d", function(d) { var node = this; var interpolate = d3.interpolate(d.currentA, 90); return function(t) { var v = interpolate(t); d.currentA = v; return chevrons({ a: v }); }; }) .duration(2000); } function dragValue(d) { var circle = d3.select(this); var x = d3.event.x; if (x < 0) x = 0; if (x > 200) x = 200; circle.attr("cx", x); var f = d3.format(".2f"); var text = d3 .select(this.parentNode) .select("text") .text(d + "(" + f(scales[d].invert(x)) + ")"); currentPattern.fill[d](scales[d].invert(x)).add(); } function dragged(d) { var x = d3.event.x; var y = d3.event.y; var r = 170; x = x - width / 2; y = y - height / 2; var a = Math.atan(y / x); var x1 = Math.cos(a) * r; var y1 = Math.sin(a) * r; if (a < 0) a = -a + Math.PI * 2; if (x < 0) (y1 = -y1), (x1 = -x1); var theta = getAngle([x1, y1], [0, 0], [100, 0]); if (y < 0) theta = 2 * Math.PI - theta; currentPattern.fill.angle((theta * 180) / Math.PI + Math.PI / 2).add(); control.attr( "transform", "translate(" + width / 2 + "," + height / 2 + ")rotate(" + 90 + ")" ); d3.select(this).attr( "transform", "translate(" + width / 2 + "," + height / 2 + ")rotate(" + ((theta * 180) / Math.PI + 90) + ")" ); } function getAngle(A, B, C) { var AB = Math.sqrt(Math.pow(B[0] - A[0], 2) + Math.pow(B[1] - A[1], 2)); var BC = Math.sqrt(Math.pow(B[0] - C[0], 2) + Math.pow(B[1] - C[1], 2)); var AC = Math.sqrt(Math.pow(C[0] - A[0], 2) + Math.pow(C[1] - A[1], 2)); return Math.acos((BC * BC + AB * AB - AC * AC) / (2 * BC * AB)); } function tweenArc(a) { return function(d) { var interpolate = d3.interpolate(d.a, Math.PI / 2); return function(t) { var dd = {}; dd.a = interpolate(t); return chevrons(dd); }; }; } }2f:T822a,lichen={ function pt(S,I) { var p = {}; // basic set up: p.sel = S || d3.select("svg"); // attempt to select SVG by default if(p.sel.node() && p.sel.node().nodeName != "svg") console.log("no svg found"); if(I) p.id = I; else p.id = patternGetNextClass(p.sel); // basic pattern info: p.bg = "none"; p.sw = 0; p.s = "#000"; p.o = 1; p.a = 0; p.background = function(_) { if(!arguments.length) return p.bg; p.bg = _; return p; } p.strokeWidth = function(_) { if(!arguments.length) return p.sw; p.sw = _; return p; } p.stroke = function(_) { if(!arguments.length) return p.s; p.s = _; return p; } p.opacity = function(_) { if(!arguments.length) return p.o; p.o = _; return p; } p.angle = function(_) { if(!arguments.length) return p.a; p.a = _; return p; } p.use = function() { p.add(); return "url(#"+p.id+")"; } return p; } ////////////////////////////////////////////////////////////////////// // Master Pattern for Centered Shape function ptCentered(S,I) { var p = pt(S,I); p.f = "steelblue"; p.hx = true; p.sp = 2; p.fill = function(_) { if(!arguments.length) return p.f; p.f = _; return p; } p.hex = function(_) { if(!arguments.length) return p.hx; p.hx = _; return p; } p.spacing = function(_) { if(!arguments.length) return p.sp; p.sp = _; return p; } return p; } ////////////////////////////////////////////////////////////////////// // Single Square Pattern function ptSquare(S,I) { var p = ptCentered(S,I); p.l = 10; p.length = function(_) { if(!arguments.length) return p.l; p.l = _; return p; } p._sq = function(pt) { wh(pt,p.l + p.sp, p.l + p.sp); applyBG(pt,p.bg,p.l + p.sp, p.l + p.sp); var d = [[p.sp/2,p.sp/2]]; var r = pt.selectAll(".rect") .data(d); r.exit().remove(); r.enter().append("rect").attr("class","rect"); } p._hx = function(pt) { var d = hxCentroids(p.sp + p.l); wh(pt,d.w,d.h); applyBG(pt,p.bg,d.w,d.h); pt.selectAll(".rect") .data(d.c) .enter() .append("rect") .attr("class","rect"); } p._style = function(pt) { pt.selectAll(".rect") .attr("x", function(d) { return d[0] }) .attr("y", function(d) { return d[1] }) .attr("width", p.l) .attr("height",p.l) .attr("fill", p.f) .attr("stroke",p.s) .attr("stroke-width",p.sw); } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); if (p.hx) p._hx(pt); else p._sq(pt); p._style(pt); return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Single Circle Pattern function ptCircle(S,I) { var p = ptCentered(S,I); p.r = 10; p.radius = function(_) { if(!arguments.length) return p.r; p.r = _; return p; } p._sq = function(pt) { wh(pt,p.r*2+p.sp,p.r*2+p.sp); applyBG(pt,p.bg,p.r*2+p.sp,p.r*2+p.sp); var d = [[p.sp/2+p.r,p.sp/2+p.r]]; var c = pt.selectAll("circle") .data(d); c.exit().remove(); c.enter().append("circle"); } p._hx = function(pt) { var d = hxCentroids((p.sp/2 + p.r)/0.866); wh(pt,d.w,d.h); applyBG(pt,p.bg,d.w,d.h); pt.selectAll("circle") .data(d.c) .enter() .append("circle"); } p._style = function(pt) { pt.selectAll("circle") .attr("cx", function(d) { return d[0] }) .attr("cy", function(d) { return d[1] }) .attr("r", p.r) .attr("fill", p.f) .attr("stroke",p.s) .attr("stroke-width",p.sw); } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); if (p.hx) p._hx(pt); else p._sq(pt); p._style(pt); return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Single Hexagon Pattern function ptHexagon(S,I) { var p = ptCentered(S,I); p.r = 10; p.radius = function(_) { if(!arguments.length) return p.r; p.r = _; return p; } p._sq = function(pt) { wh(pt,p.r*2+p.sp,p.r*2+p.sp); applyBG(pt,p.bg,p.r*2+p.sp,p.r*2+p.sp); var d = [[p.sp/2+p.r,p.sp/2+p.r]]; var c = pt.selectAll("path") .data(d); c.exit().remove(); c.enter().append("path"); } p._hx = function(pt) { var d = hxCentroids((p.sp/2 + p.r)); wh(pt,d.w,d.h); applyBG(pt,p.bg,d.w,d.h); pt.selectAll("path") .data(d.c) .enter() .append("path"); } p._style = function(pt) { pt.selectAll("path") .attr("d", function(d) { return hexPath(d[0],d[1],p.r); }) .attr("fill", p.f) .attr("stroke",p.s) .attr("stroke-width",p.sw); } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); if (p.hx) p._hx(pt); else p._sq(pt); p._style(pt); return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Single Letter Pattern function ptLetter(S,I) { var p = ptCentered(S,I); p.t = "\u03B1"; p.dy = 5; p.k = 14; p.offsetY = function(_) { if(!arguments.length) return p.dy; p.dy = _; return p; } p.text = function(_) { if(!arguments.length) return p.t; p.t = _; return p; } p.fontSize = function(_){ if(!arguments.length) return p.k; p.k = _; return p; } p.sp = 20; p._sq = function(pt) { wh(pt,p.sp,p.sp); // set width/height applyBG(pt,p.bg,p.sp,p.sp); // set background rect var d = [[p.sp/2,p.sp/2]]; // middle of each path. var c = pt.selectAll("text") .data(d); c.exit().remove(); c.enter().append("text"); } p._hx = function(pt) { var d = hxCentroids((p.sp/2 )); // get hex info, wh(pt,d.w,d.h); // set width/height applyBG(pt,p.bg,d.w,d.h); // set background rect pt.selectAll("text") .data(d.c) .enter() .append("text"); } p._style = function(pt) { pt.selectAll("text") .text(p.t) .style("text-anchor","middle") .attr("fill", p.f) .attr("stroke",p.s) .attr("stroke-width",p.sw) .attr("x", function(d) { return d[0]; }) .attr("y", function(d) { return d[1]; }) .style("font-size",p.k) .attr("dy",p.dy); } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); if (p.hx) p._hx(pt); else p._sq(pt); p._style(pt); return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Single Symbol Pattern function ptSymbol(S,I) { var p = ptCentered(S,I); p.sym = d3.symbol().type(d3.symbolWye).size(100); p.r = 14; p.symbol = function(_) { if(!arguments.length) return p.sym; p.sym = _; return p; } p.dx = 0; p.dy = 0; p.center = function(_) { if(!arguments.length) return [p.dx,p.dy]; p.dx = _[0]; p.dy = _[1]; return p; } p.sc = 1; p.scale = function(_) { if(!arguments.length) return p.sc; p.sc = _; return p; } p.sp = 16; p._sq = function(pt) { wh(pt,p.sp,p.sp); applyBG(pt,p.bg,p.sp,p.sp); var d = [[p.sp/2,p.sp/2]]; var c = pt.selectAll("path") .data(d); c.exit().remove(); c.enter().append("path"); } p._hx = function(pt) { var d = hxCentroids(p.sp/2*1.414); wh(pt,d.w,d.h); applyBG(pt,p.bg,d.w,d.h); pt.selectAll("path") .data(d.c) .enter() .append("path"); } p._style = function(pt) { pt.selectAll("path") .attr("d", p.sym) .attr("transform",function(d) { return "translate("+([d[0]-(p.dx*p.sc),d[1]-(p.dy*p.sc)])+ ")scale("+p.sc+")" }) .attr("r", p.r) .attr("fill", p.f) .attr("stroke",p.s) .attr("stroke-width",p.sw); } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); if (p.hx) p._hx(pt); else p._sq(pt); p._style(pt); return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Common Symbols // Symbols from Maki: https://www.mapbox.com/maki-icons/ var ptWetland = function(S,I) { var pt = ptSymbol(S,I); pt.background("lightblue").fill("darkgreen").stroke("black").scale(0.8).strokeWidth(0).spacing(30).center([12,12]) .symbol("M 2.6181942,7.0403716 C 3.2611586,6.454134 4.0830945,6.157614 4.9177382,6.2107118 6.7744687,6.0665089 8.4206096,7.5109538 8.699883,9.5293512 L 9.8799123,17.294968 C 8.912591,16.814927 7.7983711,16.845458 6.8541964,17.377933 L 5.64391,9.5293512 C 5.2012477,8.0935415 3.9988281,7.1045871 2.6181942,7.0403716 Z M 11.695343,18.224187 c 0.577305,-0.510407 1.248106,-0.878278 1.966714,-1.078557 L 15.507745,4.5513921 C 15.950405,3.1155825 17.152827,2.126628 18.53346,2.0624123 17.898363,1.4841395 17.088681,1.1881167 16.264172,1.2327526 14.407443,1.0885575 12.761302,2.532995 12.482028,4.5513921 L 10.515313,17.477493 c 0.421482,0.191155 0.818154,0.442211 1.18003,0.746694 z m 6.535546,-0.82966 0,0 c 0.236762,-0.211896 0.489864,-0.400559 0.756429,-0.56417 l 1.059,-7.3010058 C 20.488982,8.0935415 21.691399,7.1045871 23.072034,7.0403716 22.436936,6.462098 21.627254,6.1660758 20.802747,6.2107118 18.946017,6.0665089 17.299875,7.5109538 17.020603,9.5293512 l -1.013615,6.6372778 c 0.821632,0.204099 1.585173,0.625564 2.223901,1.227898 z m 3.328289,2.090743 0,0 c -0.657491,-0.0166 -1.297883,0.231308 -1.800303,0.696914 l -0.711042,0.68032 c -0.430713,0.422465 -1.082149,0.422465 -1.512861,0 -0.226928,-0.199119 -0.438726,-0.431422 -0.665655,-0.647135 -1.070499,-0.990281 -2.636005,-0.990281 -3.706504,0 -0.242056,0.215713 -0.468985,0.464611 -0.711042,0.680322 -0.43071,0.422464 -1.082147,0.422464 -1.512859,0 -0.242056,-0.215711 -0.468985,-0.464609 -0.711042,-0.680322 -1.0679267,-0.980989 -2.6234473,-0.980989 -3.6913739,0 C 6.3095677,20.431082 6.0977674,20.663385 5.8708388,20.862504 5.735892,20.981147 5.5820341,21.071246 5.4169813,21.127998 4.974924,21.236186 4.5139564,21.078058 4.206695,20.713167 3.8322624,20.358071 3.4325654,20.036328 3.0115371,19.750761 2.6992833,19.555125 2.3419462,19.462869 1.9827937,19.48527 l -0.090771,0 c -0.4177004,0 -0.7564291,0.371522 -0.7564291,0.829659 0,0.45814 0.3387287,0.82966 0.7564289,0.82966 l 0,0 c 0.3721631,0.02406 0.7204229,0.209075 0.9682291,0.514388 l 0.5446289,0.431425 c 1.0161869,0.912624 2.4671689,0.95361 3.524959,0.09956 0.2874433,-0.232304 0.5446289,-0.530982 0.8320721,-0.779879 0.4307105,-0.422462 1.0821469,-0.422462 1.5128579,0 l 0.5900146,0.580762 c 1.0494699,1.026953 2.6205729,1.075904 3.7216299,0.11614 0.226929,-0.182526 0.408472,-0.414832 0.635402,-0.61395 0.450227,-0.5041 1.187744,-0.512231 1.64735,-0.0184 0.0055,0.0061 0.01112,0.01222 0.0168,0.0184 l 0.590014,0.580763 c 0.736158,0.684303 1.737519,0.915281 2.662632,0.613948 0.578668,-0.171904 1.102269,-0.516545 1.512857,-0.995593 0.234342,-0.29403 0.555823,-0.48784 0.907718,-0.547574 l 0,0 c 0.417697,0 0.756426,-0.371521 0.756426,-0.82966 0,-0.458138 -0.338729,-0.829658 -0.756426,-0.829658 z"); return pt; } var ptFish = function(S,I) { var pt = ptSymbol(S,I); pt.background("#0077BE").fill("orange").stroke("black").strokeWidth(1).scale(0.8).spacing(30).center([12,12]) .symbol("m 17.055085,18.852887 c -0.444915,-0.983199 -0.444915,-3.768927 0,-4.588259 0.593221,-0.983198 5.042373,2.294129 5.042373,2.294129 1.334746,0.655466 1.334746,-9.9958486 0,-9.3403831 0,0 -4.597458,3.4411941 -5.042373,2.2941292 -0.444915,-1.1470646 -0.444915,-3.4411939 0,-4.5882585 C 17.5,3.9410464 23.135594,3.77718 23.135594,3.77718 c 0,-1.1470646 -4.300848,-2.2941292 -6.080509,-2.2941292 -1.779661,0 -3.707627,0.1638664 -6.080508,1.310931 C 8.6016949,3.77718 6.6737288,5.4158438 4.8940678,7.3822402 3.1144068,9.3486367 0.88983051,13.28143 0.88983051,14.428495 c 0,1.147064 2.22457629,4.588258 5.48728809,6.063055 3.2627119,1.474798 4.8940684,1.80253 6.6737294,2.130263 1.631356,0.163866 3.855932,0 5.783898,-0.491599 1.483051,-0.327733 4.300848,-1.147065 4.300848,-1.80253 0,-0.327733 -5.635594,-0.491599 -6.080509,-1.474797 z M 7.5635593,15.08396 c -1.1864407,0 -2.2245763,-1.147065 -2.2245763,-2.457996 0,-1.310931 1.0381356,-2.457995 2.2245763,-2.457995 1.1864407,0 2.2245763,1.147064 2.2245763,2.457995 0,1.310931 -1.0381356,2.457996 -2.2245763,2.457996 z"); return pt; } var ptFire = function(S,I) { var fire = ptSymbol(S,I); fire.background("yellow").fill("orange").stroke("black").scale(0.6).spacing(30).center([12,12]) .symbol("M 12.108051,0.7923729 7.9588913,7.0366745 5.4693956,3.9145237 C 4.5486141,5.4370405 0.99427797,9.0542083 0.99427797,12.974381 c 0,5.773481 4.97583813,10.453585 11.11377303,10.453585 6.137935,0 11.113773,-4.680104 11.113773,-10.453585 0,-3.9201727 -3.554336,-7.5373405 -4.475118,-9.0598573 L 16.25721,7.0366745 12.108051,0.7923729 Z m 0,10.1469901 c 0,0 4.149159,3.999163 4.149159,7.024839 0,1.306776 -1.370716,3.122151 -4.149159,3.122151 -2.7784433,0 -4.1491597,-1.815375 -4.1491597,-3.122151 0,-2.921865 4.1491597,-7.024839 4.1491597,-7.024839 z"); return fire; } var ptDanger = function(S,I) { var danger = ptSymbol(S,I); danger.background("darkorange").fill("black").stroke("black").strokeWidth(0).scale(0.8).spacing(40).center([12,12]) .symbol("m 22.723729,22.613369 c -0.126052,0.290777 -0.44093,0.481882 -0.790981,0.479633 -0.100135,0.01604 -0.202793,0.01604 -0.302928,0 l -9.744214,-3.657207 -9.7610432,3.657207 c -0.4328517,0.150636 -0.9209039,-0.03987 -1.0898709,-0.425375 -0.00135,-0.0032 -0.00269,-0.0062 -0.00404,-0.0093 -0.2172674,-0.365871 -0.060249,-0.819425 0.3507243,-1.012776 0.043925,-0.02068 0.089868,-0.03792 0.1373278,-0.05141 L 9.6809563,18.596436 1.518705,15.598725 C 1.0740726,15.478367 0.82314655,15.059736 0.95828658,14.663738 1.0934264,14.267742 1.5634712,14.044262 2.0081035,14.16462 c 0.039885,0.01079 0.078762,0.02428 0.1164593,0.04017 l 9.7610432,3.612242 9.761043,-3.612242 c 0.419724,-0.177614 0.921745,-0.01858 1.121173,0.355229 0.199428,0.373815 0.02087,0.820924 -0.398856,0.998538 -0.0377,0.01604 -0.07658,0.02938 -0.116459,0.04017 l -8.179081,2.997711 8.162251,2.997711 c 0.438742,0.136395 0.670315,0.563719 0.517335,0.95447 -0.0086,0.02203 -0.01835,0.04361 -0.02928,0.06475 z m -3.2649,-15.6630409 0,0.6744849 c -0.0035,0.3191064 -0.121508,0.6289199 -0.336588,0.8843248 -0.940089,0.9267424 -1.952377,1.7932322 -3.029289,2.5930212 l 0,1.738672 c 0.0025,0.311761 -0.21205,0.592198 -0.53854,0.704462 l -3.635147,1.304004 -0.117806,0 -3.6519766,-1.304004 c -0.3002362,-0.1307 -0.4851911,-0.40709 -0.4712228,-0.704462 l 0,-1.738672 C 6.5890619,10.304018 5.5654987,9.4373789 4.6153117,8.5091378 4.4121811,8.2501355 4.3061559,7.9406219 4.3123827,7.624813 l 0,-0.6744849 C 4.5932652,3.625417 7.5055902,0.95595549 11.22926,0.61016949 l 0.605858,0 0,0 0.656346,0 c 3.746557,0.31940607 6.689344,2.99726121 6.967365,6.34015861 z M 9.361198,6.6055913 c 0,-0.8278179 -0.7534515,-1.4988554 -1.6829384,-1.4988554 -0.9294868,0 -1.6829384,0.6710375 -1.6829384,1.4988554 0,0.8278179 0.7534516,1.4988555 1.6829384,1.4988555 0.9294869,0 1.6829384,-0.6710376 1.6829384,-1.4988555 z m 1.682938,4.4965677 c 0,-0.413835 -0.376809,-0.749428 -0.841469,-0.749428 -0.4646591,0 -0.841469,0.335593 -0.841469,0.749428 l 0,0.749427 c 0,0.413834 0.3768099,0.749427 0.841469,0.749427 0.46466,0 0.841469,-0.335593 0.841469,-0.749427 l 0,-0.749427 z m 3.365878,0 c 0,-0.413835 -0.376811,-0.749428 -0.84147,-0.749428 -0.464659,0 -0.841469,0.335593 -0.841469,0.749428 l 0,0.749427 c 0,0.413834 0.37681,0.749427 0.841469,0.749427 0.464659,0 0.84147,-0.335593 0.84147,-0.749427 l 0,-0.749427 z m 3.365877,-4.4965677 c 0,-0.8278179 -0.753452,-1.4988554 -1.682939,-1.4988554 -0.929487,0 -1.682938,0.6710375 -1.682938,1.4988554 0,0.8278179 0.753451,1.4988555 1.682938,1.4988555 0.929487,0 1.682939,-0.6710376 1.682939,-1.4988555 z"); return danger; } ////////////////////////////////////////////////////////////////////// // Checker function ptChecker(S,I) { var p = pt(S,I); p.w = 10; p.f = ["steelblue","white"]; p.width = function(_) { if(!arguments.length) return p.w; p.w = _; return p; } p.fill = function(_) { if(!arguments.length) return p.f; p.f = arr(_); return p; } p.a = 45; // go about drawing: p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); p.o = arr(p.o); if (p.f.length == 1) p.f.push("white"); var totalWidth = p.w * 2; pt.attr("width", totalWidth) .attr("height", totalWidth) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("id",p.id); var rects = pt.selectAll("rect") .data([[0,0],[0,p.w],[p.w,p.w],[p.w,0]]); rects.exit().remove(); var enter = rects.enter() .append("rect") enter.merge(rects) .attr("width", p.w) .attr("height", p.w) .attr("x", function(d,i) { return d[0]; }) .attr("y", function(d,i) { return d[1]; }) .attr("fill",function(d,i) { return p.f[i%2]; }) .attr("opacity",function(d,i) { return p.o[i%p.o.length]; }) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Stripe function ptStripe(S,I) { var p = pt(S,I); p.w = [10]; p.f = ["steelblue","white"]; p.width = function(_) { if(!arguments.length) return p.w; p.w = arr(_); return p; } p.fill = function(_) { if(!arguments.length) return p.f; p.f = arr(_); return p; } p.a = 45; // go about drawing: p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); p.o = arr(p.o); if (p.f.length == 1) p.f.push("white"); var totalWidth = 0; var currentX = 0; p.f.forEach(function(d,i) { totalWidth += p.w[i%p.w.length]; }) pt.attr("width", totalWidth) .attr("height", 20) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("id",p.id); var rects = pt.selectAll("rect") .data(p.f); rects.exit().remove(); var enter = rects.enter() .append("rect"); enter.merge(rects) .attr("width", function(d,i) { return p.w[i%p.w.length]; }) .attr("height", 20) .attr("x", function(d,i) { currentX += p.w[i%p.w.length]; return currentX - p.w[i%p.w.length]; }) .attr("y",0) .attr("fill",function(d,i) { return p.f[i]; }) .attr("opacity",function(d,i) { return p.o[i%p.o.length]; }) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Plaid function ptPlaid(S,I) { var p = pt(S,I); p.w = [[10,5],[12,6]]; p.f = [["crimson","red"],["steelblue","white"]]; p.o = [[0.5,0.8],[0.6,0.4]]; p.width = function(_) { if(!arguments.length) return p.w; p.w = _; return p; } p.fill = function(_) { if(!arguments.length) return p.f; p.f = _; return p; } p.a = 45; // go about drawing: p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); p.o = arr(p.o); p.w = arr(p.w); if (Array.isArray(p.w[0]) && p.w.length == 1) p.w.push(p.w[0]); else if(!Array.isArray(p.w[0])) { p.w = [p.w,p.w]; } if (Array.isArray(p.o[0]) && p.o.length == 1) p.o.push(p.o[0]); else if(!Array.isArray(p.o[0])) { p.o = [p.o,p.o]; } if (Array.isArray(p.f[0]) && p.f.length == 1) p.f.push(p.f[0]); else if(!Array.isArray(p.f[0])) { p.f = [p.f,p.f]; } var totalWidth = 0; var totalHeight = 0; var currentX = 0; var currentY = 0; p.f[0].forEach(function(d,i) { totalWidth += p.w[0][i%p.w[0].length]; }) p.f[1].forEach(function(d,i) { totalHeight += p.w[1][i%p.w[1].length]; }) pt.attr("width", totalWidth) .attr("height", totalHeight) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("id",p.id); var r0 = pt.selectAll(".x") .data(p.f[0]); var r1 = pt.selectAll(".y") .data(p.f[1]); r0.exit().remove(); r1.exit().remove(); var e0 = r0.enter().append("rect").attr("class","x"); var e1 = r1.enter().append("rect").attr("class","y"); e0.merge(r0) .attr("width", function(d,i) { return p.w[0][i%p.w[0].length]; }) .attr("height", totalHeight) .attr("x", function(d,i) { currentX += p.w[0][i%p.w[0].length]; return currentX - p.w[0][i%p.w[0].length]; }) .attr("y",0) .attr("fill",function(d,i) { return p.f[0][i]; }) .attr("opacity",function(d,i) { return p.o[0][i%p.o.length]; }) e1.merge(r1) .attr("height", function(d,i) { return p.w[1][i%p.w[1].length]; }) .attr("width", totalWidth) .attr("y", function(d,i) { currentY += p.w[1][i%p.w[1].length]; return currentY - p.w[1][i%p.w[1].length]; }) .attr("x",0) .attr("fill",function(d,i) { return p.f[1][i]; }) .attr("opacity",function(d,i) { return p.o[1][i%p.o.length]; }) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Cairo Pentagonal function ptCairo(S,I) { var p = pt(S,I); p.base = [[[0.7071067811865476,1.224744871391589],[0.2981726899245648,2.750907676928317],[1.1165716605051963,3.560304443015607],[2.641768897701186,3.161464390300587],[2.2332695867232757,1.6336789626535717]],[[0.7071067811865476,1.224744871391589],[1.1160408724485302,-0.30141793414513884],[0.29764190186789885,-1.1108147002324285],[-1.4190814287039564,0.0028104639365018613],[-0.8190560243501803,0.8158107801296063]],[[3.0426663528105653,0.8152799920729403],[2.6438263000955455,-0.7099172451230495],[4.159364279028645,-1.1113454882890943],[4.977763249609277,-0.3019487222018049],[4.5688291583472935,1.224214083334923]],[[2.641768897701186,3.161464390300587],[4.15989506708531,2.750376888871651],[4.978294037665942,3.5597736549589403],[4.56935994640396,5.0859364604956685],[3.043197140867232,4.677002369233686]],[[-1.2296127377224502,3.1594069879062276],[0.2981726899245648,2.750907676928317],[1.1165716605051963,3.560304443015607],[0.7076375692432135,5.086467248552335],[-0.8185252362935145,4.677533157290352]],[[1.1160408724485302,-0.30141793414513884],[2.6438263000955455,-0.7099172451230495],[3.0426663528105653,0.8152799920729403],[2.2332695867232757,1.6336789626535717],[0.7071067811865476,1.224744871391589]],[[1.1165716605051963,3.560304443015607],[2.641768897701186,3.161464390300587],[3.043197140867232,4.677002369233686],[2.2338003747799418,5.495401339814318],[0.7076375692432135,5.086467248552335]],[[-0.8190560243501803,0.8158107801296063],[0.7071067811865476,1.224744871391589],[0.2981726899245648,2.750907676928317],[-1.2296127377224502,3.1594069879062276],[-1.62845279043747,1.6342097507102378]],[[3.0426663528105653,0.8152799920729403],[4.5688291583472935,1.224214083334923],[4.15989506708531,2.750376888871651],[2.641768897701186,3.161464390300587],[2.2332695867232757,1.6336789626535717]]]; p.l = 20; p.f = ["#2b8cbe","#a8ddb5","#7bccc4","#ccebc5"]; p.a = 15; p.sw = 1; p.length = function(_) { if(!arguments.length) return p.l; p.l = _; return p; } p.fill = function(_) { if(!arguments.length) return p.f; p.f = _; return p; } p.a = 45; // go about drawing: p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); var k = p.l/2; var w = k * 3.864; var c = [0,1,1,1,1,2,2,3,3]; var l = d3.line() .x(function(d) { return d[0]*k; }) .y(function(d) { return d[1]*k; }) pt.attr("width", w) .attr("height", w) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("id",p.id); pt.selectAll("path") .data(p.base) .enter() .append("path") pt.selectAll("path") .attr("d",l) .attr("fill",function(d,i) { return p.f[c[i]]; }) .attr("stroke", p.s) .attr("stroke-width", p.sw) .attr("opacity",p.o) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Octagon + Square function ptOctagon(S,I) { var p = pt(S,I); p.base = [[[0.707,0],[0,-0.707],[-0.707,0],[0,0.707]],[[0.707,2.41],[0,1.717],[-0.707,2.41],[0,3.12]],[[3.12,2.41],[2.41,1.71],[1.71,2.41],[2.41,3.12]],[[3.12,0],[2.41,-0.707],[1.71,0],[2.41,0.707]],[[0,0.707],[0,1.717],[0.71,2.41],[1.71,2.41],[2.41,1.71],[2.41,0.71],[1.71,0],[0.707,0],[0,0.707]]] p.l = 32; p.f = ["steelblue","white"] p.a = 15; p.sw = 1; p.length = function(_) { if(!arguments.length) return p.l; p.l = _; return p; } p.fill = function(_) { if(!arguments.length) return p.f; p.f = _; return p; } p.a =0; p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); var k = p.l/2.41; var w = k * 2.41 + p.sw/2; var c = [1,1,1,1,0]; var l = d3.line() .x(function(d) { return d[0]*k; }) .y(function(d) { return d[1]*k; }) pt.attr("width", w) .attr("height", w) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("id",p.id); pt.selectAll("path") .data(p.base) .enter() .append("path") pt.selectAll("path") .attr("d",l) .attr("fill",function(d,i) { return p.f[c[i]]; }) .attr("stroke", p.s) .attr("stroke-width", p.sw) .attr("opacity",p.o) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Sine function ptSine(S,I) { var p = pt(S,I); p.amp = 10; p.sam = 1; p.per = 100; p.sw = 10; p.s = "steelblue"; p.f = "none"; p.sp = 4; p.amplitude = function(_) { if(!arguments.length) return p.amp; p.amp = _; return p; } p.period = function(_) { if(!arguments.length) return p.per; p.per = _; return p; } p.sampling = function(_) { if(!arguments.length) return p.sam; p.sam = _; return p; } p.spacing = function(_) { if(!arguments.length) return p.sp; p.sp = _; return p; } p.add = function() { var defs = checkDefs(p.sel); var pt = checkPattern(p.sel,defs,p.id); ptProps(pt,p.a,p.id); var points=[]; var x,y; var width = p.per; var samples = width/p.sam; for (var i =0; i < (samples+20); i++) { x= (i-10) * p.sam; y= Math.sin(i/samples*Math.PI*8) * p.amp; if(i==0) points.push("M"+x+" "+y); else points.push(" L"+x+" "+y); } var path = points.join(" "); pt.attr("width", width) .attr("height", (p.amp+p.sw/4+p.sp)*2) .attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+p.a+")") .attr("stroke-width",p.sw) .attr("stroke",p.s) .attr("id",p.id) .attr("fill",p.f) var paths = pt.selectAll("path") .data([path]); paths.exit().remove(); var enter = paths.enter() .append("path"); enter.merge(paths) .attr("transform","translate(0,"+(p.amp+p.sw/4+p.sp)+")") .attr("d", path) return p; } p.add(); return p; } ////////////////////////////////////////////////////////////////////// // Scheme var ptSchemeCategory10 = function(S) { var sel = S || d3.select("svg"); // attempt to select SVG by default if(sel.node() && sel.node().nodeName != "svg") console.log("no svg found"); return [ ptCircle(sel).radius(2).spacing(2).fill("black"), ptCircle(sel).radius(6).fill("none").strokeWidth(1).spacing(2), ptCircle(sel).radius(5).spacing(4).fill("black"), ptCircle(sel).radius(1).spacing(1).fill("black"), ptCircle(sel).radius(3).fill("none").strokeWidth(1).spacing(2), ptCircle(sel).radius(2).spacing(5).hex(false).fill("black"), ptCircle(sel).radius(10).spacing(1).fill("black"), ptCircle(sel).radius(10).spacing(1).fill("none").strokeWidth(2), ptCircle(sel).radius(7).spacing(4).fill("none").strokeWidth(5), ptCircle(sel).radius(6).hex(false).spacing(5).fill("black") ] } ////////////////////////////////////////////////////////////////////// // Scheme Generator var ptCircles = function(S) { var c = {}; c.bg = ["none"]; c.f = ["black"]; c.r = [1]; c.s = [16,8,4,2]; c.spacings = function(_) { if(!arguments.length) return c.s; c.s = arr(_); return c; } c.fills = function(_) { if(!arguments.length) return c.f; c.f = arr(_); return c; } c.radii = function(_) { if(!arguments.length) return c.r; c.r = arr(_); return c; } c.backgrounds = function(_) { if(!arguments.length) return c.bg; c.bg = arr(_); return c; } c.get = function() { console.log(c); var max = Math.max(c.s.length,c.f.length,c.r.length,c.bg.length); var a = []; for(var i = 0; i < max; i++) { var p = ptCircle(S); if (c.s) p.spacing(c.s[i%c.s.length]); if (c.f) p.fill(c.f[i%c.f.length]); if (c.r) p.radius(c.r[i%c.r.length]); if (c.bg) p.background(c.bg[i%c.bg.length]); p.add(); a.push(p); } return a; } return c; } ////////////////////////////////////////////////////////////////////// // Stripes Manager var ptManager = function(S) { var m = {}; m.keys = []; m.f = d3.schemeCategory20; m.combos = []; m.comboIds = []; m.totalWidth = 12; m.a = 45; m.sel = S; m.values = function() { var values = []; m.keys.forEach(function(d,i) { values.push({key:d,color:m.f[i]}) }) return values; } m.fills = function(_) { if(!_) return m.f; m.f = _; return m; } m.width = function(_) { if(!_) return m.totalWidth; m.totalWidth = _; return m; } m.datum = function(d) { var bStriped = false; // add new keys to key array: if (Array.isArray(d)) { d.forEach(function(e) { if (m.keys.indexOf(e) < 0) m.keys.push(e); }) if (d.length > 1) bStriped = true; } else { if (m.keys.indexOf(d) < 0) m.keys.push(d); } // Return a fill - solid or stripe pattern: if (!bStriped) { if (Array.isArray(d)) return m.f[m.keys.indexOf(d[0])]; else return m.f[m.keys.indexOf(d)]; } // requires stripes: else { // ensure same order for areas with same stripes: d.sort(); // don't create duplicate patterns var existing = null; m.combos.forEach(function(c,i) { if (c.length==d.length && c.every(function(e,j) { return d[j] === e})) existing = i; }) if (existing != null) { return m.comboIds[existing]; } // create a new pattern: else { m.combos.push(d); var stripeColors = []; d.forEach(function(e) { stripeColors.push(m.f[m.keys.indexOf(e)]); }) var w = m.totalWidth / stripeColors.length; var str = ptStripe(m.sel).fill(stripeColors).angle(m.a).width(w); m.comboIds.push(str.use()); return str.use(); } } return m; } return m; } ////////////////////////////////////////////////////////////////////// // Pattern Helper Functions: // width and height: function wh(e,w,h) { e.attr("width",w) e.attr("height",h) } function checkDefs(s) { var defs = s.select("defs"); if(defs.empty()) defs = s.append("defs"); return defs; } function checkPattern(s,d,id) { var pt = s.select("#"+id); if (pt.empty()) pt = d.append("pattern"); return pt; } function ptProps(p,a,id) { p.attr("patternUnits","userSpaceOnUse") .attr("patternTransform","rotate("+a+")") .attr("id", id); } // takes radius, stroke width, and spacing additional spacing to return length,width of pattern and pattern object centroids. function hxCentroids(r) { // units: var h = r*2; var w = Math.sqrt(3)/2 * h; // dimensions: var dy = h*1.5; var dx = w; return {"h":dy,"w":dx,"c":[[w/2,0],[w/2,dy],[0,h*3/4],[dx,h*3/4]]}; } // draws background for pattern (p) with fill (f) and dimensions x,y function applyBG(p,f,x,y) { var r = p.select(".ptBackground") r.remove(); r = p.append("rect"); r.attr("width", x) .attr("height",y) .attr("fill",f) .attr("x",0) .attr("y",0) .lower() .attr("class","ptBackground"); } // draws background color for canvas patterns, c is context, f is fill, and dimensions are x,y function patternApplyCanvasBackground(c,f,x,y) { c.beginPath() c.fillStyle = f; c.fillRect(0,0,x,y); } // returns a hexagon path centered at [x,y] with r function hexPath(x,y,r) { var x1 = x; var y1 = y-r; var x2 = x+(Math.cos(Math.PI/6)*r); var y2 = y-(Math.sin(Math.PI/6)*r); var x3 = x+(Math.cos(Math.PI/6)*r); var y3 = y+(Math.sin(Math.PI/6)*r); var x4 = x; var y4 = y+r; var x5 = x-(Math.cos(Math.PI/6)*r); var y5 = y+(Math.sin(Math.PI/6)*r); var x6 = x-(Math.cos(Math.PI/6)*r); var y6 = y-(Math.sin(Math.PI/6)*r); var path = "M"+x1+" "+y1+" L"+x2+" "+y2+" L"+x3+" "+y3+" L"+x4+" "+y4+" L"+x5+" "+y5+" L"+x6+" "+y6+"z"; return path; } // ensure a is an array. function arr(a) { if(Array.isArray(a)) return a; else return [a]; } // Get the next free class for a pattern: function patternGetNextClass(svg) { function increment() { var selection = svg.select("#d3Pattern-"+i) if (!selection.empty()) { return false; } return true; } var i = 0; while (!increment(i)) { i++; if ( i > 1000) break; // upper limit of patterns } return "d3Pattern-"+i; } return { circle: ptCircle, square: ptSquare, hexagon: ptHexagon, text: ptLetter, symbol: ptSymbol, wetland: ptWetland, fish: ptFish, fire: ptFire, danger: ptDanger, checker: ptChecker, stripe: ptStripe, plaid: ptPlaid, cairo: ptCairo, octagon: ptOctagon, sine: ptSine, circles: ptCircles, stripeManager: ptManager, circleSchemeCategory10: ptSchemeCategory10, } }30:T1896,chevronArc = { var constant$1 = function(x) { return function constant() { return x; }; }; function chevronArcInnerRadius(d) { return d.innerRadius; } function chevronArcOuterRadius(d) { return d.outerRadius; } function chevronArcStartAngle(d) { return d.startAngle; } function chevronArcEndAngle(d) { return d.endAngle; } function chevronEndIndent(d) { return d.endIndent; } function chevronStartIndent(d) { return d.startIndent; } var chevronArc = function() { var innerRadius = chevronArcInnerRadius, outerRadius = chevronArcOuterRadius, startAngle = chevronArcStartAngle, endAngle = chevronArcEndAngle, endIndent = chevronEndIndent, startIndent = chevronStartIndent, context = null; function chevronArc() { var buffer, r, r0 = +innerRadius.apply(this, arguments), r1 = +outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) - Math.PI/2, a1 = endAngle.apply(this, arguments) - Math.PI/2, e1 = +endIndent.apply(this, arguments), e0 = +startIndent.apply(this, arguments), da = Math.abs(a1 - a0), cw = a1 > a0; if (!context) context = buffer = d3.path(); // Ensure that the outer radius is always larger than the inner radius. if (r1 < r0) r = r1, r1 = r0, r0 = r; // Or is it a circular or annular sector? else { ///////// get main coordinates: var tailOuter = {}; tailOuter.x = Math.cos(a0) * r1; // a0 = starting angle tailOuter.y = Math.sin(a0) * r1; // r1 = outer radius var headOuter = {}; headOuter.x = r1 * Math.cos(a1); headOuter.y = r1 * Math.sin(a1); var headInner = {}; headInner.x = r0 * Math.cos(a1); headInner.y = r0 * Math.sin(a1); var tailInner = {}; tailInner.x = Math.cos(a0) * r0; tailInner.y = Math.sin(a0) * r0; var rDifference = e1; var headMidpoint = {}; headMidpoint.x = (headInner.x + headOuter.x)/2; headMidpoint.y = (headInner.y + headOuter.y)/2; var tailMidpoint = {}; tailMidpoint.x = (tailInner.x + tailOuter.x)/2; tailMidpoint.y = (tailInner.y + tailOuter.y)/2; var m0 = (headInner.y - headOuter.y) / (headInner.x - headOuter.x); m0 = 1/m0; var k0 = e1 / Math.sqrt( 1 + ( m0 * m0 )); var headPoint = {}; if (Math.abs(m0) > 1000 * Math.PI) { if (cw) { headPoint.x = headMidpoint.x; if( headInner.x < 0 ) { headPoint.y = headMidpoint.y - e1; } else { headPoint.y = headMidpoint.y + e1; } } else { headPoint.x = headMidpoint.x; if( headInner.x < 0 ) { headPoint.y = headMidpoint.y + e1; } else { headPoint.y = headMidpoint.y - e1; } } } else { var headAngle = a1; while (headAngle < 0) { headAngle += Math.PI * 2; } if ( headAngle % (Math.PI * 2) < Math.PI ) { if (cw) { headPoint.x = headMidpoint.x - k0; headPoint.y = headMidpoint.y + (m0 * k0); } else { headPoint.x = headMidpoint.x + k0; headPoint.y = headMidpoint.y - (m0 * k0); } } else { if (cw) { headPoint.x = headMidpoint.x + k0; headPoint.y = headMidpoint.y - (m0 * k0); } else { headPoint.x = headMidpoint.x - k0; headPoint.y = headMidpoint.y + (m0 * k0); } } } // tail indent: var m1 = (tailInner.y - tailOuter.y) / (tailInner.x - tailOuter.x); m1 = 1/m1; var k1 = e0 / Math.sqrt( 1 + ( m1 * m1 )); var tailPoint = {}; if (Math.abs(m1) > 1000 * Math.PI) { if (cw) { tailPoint.x = tailMidpoint.x; if( tailInner.x < 0 ) { tailPoint.y = tailMidpoint.y - e0; } else { tailPoint.y = tailMidpoint.y + e0; } } else { tailPoint.x = tailMidpoint.x; if( tailOuter.x < 0 ) { tailPoint.y = tailMidpoint.y + e0; } else { tailPoint.y = tailMidpoint.y - e0; } } } else { if (a0 > 0 && a0 < Math.PI) { if (cw) { tailPoint.x = tailMidpoint.x - k1; tailPoint.y = tailMidpoint.y + (k1 * m1) ; } else { tailPoint.x = tailMidpoint.x + k1; tailPoint.y = tailMidpoint.y - (k1 * m1) ; } } else { if (cw) { tailPoint.x = tailMidpoint.x + k1; tailPoint.y = tailMidpoint.y - (k1 * m1) ; } else { tailPoint.x = tailMidpoint.x - k1; tailPoint.y = tailMidpoint.y + (k1 * m1) ; } } } ///////// // 1. start at outer curve tail // 2. curve to outer curve head // 3. line to head point // 4. line to inner curve head // 5. curve to inner curve tail // 6. line to tail indent. // 1, 2 context.moveTo(tailOuter.x, tailOuter.y), context.arc(0, 0, r1, a0, a1, !cw); // 3 context.lineTo(headPoint.x, headPoint.y); // 4, 5 context.arc(0, 0, r0, a1, a0, cw); // 6 context.lineTo(tailPoint.x, tailPoint.y); } context.closePath(); if (buffer) return context = null, buffer + "" || null; } chevronArc.centroid = function() { var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - Math.PI / 2, e1 = +endAngle.apply(this,arguments); return [Math.cos(a) * r, Math.sin(a) * r]; }; chevronArc.innerRadius = function(_) { return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : innerRadius; }; chevronArc.outerRadius = function(_) { return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : outerRadius; }; chevronArc.startAngle = function(_) { return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : startAngle; }; chevronArc.endAngle = function(_) { return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : endAngle; }; chevronArc.endIndent = function (_) { return arguments.length ? (endIndent = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : endIndent; }; chevronArc.startIndent = function (_) { return arguments.length ? (startIndent = typeof _ === "function" ? _ : constant$1(+_), chevronArc) : startIndent; }; chevronArc.context = function(_) { return arguments.length ? ((context = _ == null ? null : _), chevronArc) : context; }; return chevronArc; } return chevronArc; }31:[] 2c:{"id":"9300c4231eb5ced4","slug":"lichen-patterns","title":"Lichen Patterns","thumbnail":"f323a7d6e1864f1d1ca0185e8f9aa755f21cdea3b0b99a072c82250611f8df67","access_level":"public","create_time":"$D2019-07-29T02:52:03.088Z","update_time":"$D2021-04-11T16:15:05.820Z","view_time":null,"first_public_time":"$D2019-07-31T02:25:39.411Z","has_unpublished_edits":null,"fork":true,"stars":6,"starred":false,"owner":{"type":"team","id":"c4502285a4e37a76","login":"stroked","name":"Ajay","avatar_url":"https://avatars-next.observableusercontent.com/849d25192620761ccd4197b7433f5fb9328fa64b2eae6f2efeda3ec38d44931b","tier":"starter_2024"},"version":179,"publish_version":179,"role":null,"authored":false,"authors":[{"type":"individual","id":"598f272ebeef8654","login":"stroked","name":"Ajay","avatar_url":"https://avatars-next.observableusercontent.com/d44b451942fea52596b1c676ac370921eb7a9fcbafedb9695b15ef3e7e3adcd1","tier":null}],"members":[{"type":"individual","id":"598f272ebeef8654","login":"stroked","name":"Ajay","avatar_url":"https://avatars-next.observableusercontent.com/d44b451942fea52596b1c676ac370921eb7a9fcbafedb9695b15ef3e7e3adcd1","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":2,"collection":{"id":"729a4075096a8ad2","slug":"reblock","title":"from bl.ocks","owner":{"id":"c4502285a4e37a76","login":"stroked","name":"Ajay"}},"type":"notebook","body":{"title":"Lichen Patterns","cells":[{"id":0,"value":"md`# Lichen Patterns`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":171,"value":"md`from [bl.ocks](https://bl.ocks.org/Andrew-Reid/1d835f33b0f0d1a730f84ffdee8f15c5)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2,"value":"html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":63,"value":"$2e","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":56,"value":"height=500;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":55,"value":"margin = ({top: 50, right: 50, bottom: 50, left: 50})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":123,"value":"$2f","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":117,"value":"$30","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3,"value":"d3 = require('d3@5')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":6,"value":"import {} from '@jashkenas/inputs'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W31","stdlib":"1","titling":"auto"}} 2d:"$2c:body"