vega-scenegraph - npm Package Compare versions

Comparing version 4.4.1 to 4.5.0

build/vega-scenegraph-schema.json

@@ -315,2 +315,8 @@ {
           }
+        },
+        "strokeForeground": {
+          "type": "boolean"
+        },
+        "strokeOffset": {
+          "type": "number"
         }
@@ -317,0 +323,0 @@ },

build/vega-scenegraph.min.js

@@ -1,1 +0,1 @@
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i,r=0;Et(n,(function(n){i=t.draw(e,n,i),++r})),Ke(e,1+r)}(r,n,t)),l=n,++h}return(i=On(e,t,n,"g",o)).setAttribute("class",tn(e)),u||i.style.setProperty("pointer-events",a),e.clip?i.setAttribute("clip-path",te(r,e,e.group)):i.removeAttribute("clip-path"),s.nested?e.items.length&&c(e.items[0]):Et(e,c),Ke(i,h),i};var qn=null,En=null,Dn={group:function(t,e,n){var i,r;qn=i=e.childNodes[2],En=i.__values__,t.foreground(Bn,n,this),En=e.__values__,qn=e.childNodes[1],t.content(Bn,n,this),qn=r=e.childNodes[0],t.background(Bn,n,this);var o=!1===n.mark.interactive?"none":null;if(o!==En.events&&(i.style.setProperty("pointer-events",o),r.style.setProperty("pointer-events",o),En.events=o),n.strokeForeground&&n.stroke){const t=n.fill;i.style.removeProperty("display"),this.style(r,n),r.style.removeProperty("stroke"),t&&(n.fill=null),En=i.__values__,this.style(i,n),t&&(n.fill=t),qn=null}else i.style.setProperty("display","none"),i.style.setProperty("fill","none")},image:function(t,e,n){!1===n.smooth?(In(e,"image-rendering","optimizeSpeed"),In(e,"image-rendering","pixelated")):In(e,"image-rendering",null)},text:function(t,n,i){var r,o,s,a,u=Le(i);e.isArray(u)?(r=(o=u.map(t=>Se(i,t))).join("\n"))!==En.text&&(Ke(n,0),s=n.ownerDocument,a=Pe(i),o.forEach((t,e)=>{const r=Qe(s,"tspan",zn);r.__data__=i,r.textContent=t,e&&(r.setAttribute("x",0),r.setAttribute("dy",a)),n.appendChild(r)}),En.text=r):(o=Se(i,u))!==En.text&&(n.textContent=o,En.text=o),In(n,"font-family",Ne(i)),In(n,"font-size",Ce(i)+"px"),In(n,"font-style",i.fontStyle),In(n,"font-variant",i.fontVariant),In(n,"font-weight",i.fontWeight)}};function In(t,e,n){n!==En[e]&&(null==n?t.style.removeProperty(e):t.style.setProperty(e,n+""),En[e]=n)}function Bn(t,e,n){e!==En[t]&&(null!=e?n?qn.setAttributeNS(n,t,e):qn.setAttribute(t,e):n?qn.removeAttributeNS(n,t):qn.removeAttribute(t),En[t]=e)}function Vn(){var t;return"undefined"==typeof window?"":(t=window.location).hash?t.href.slice(0,-t.hash.length):t.href}function Hn(t){sn.call(this,t),this._text={head:"",bg:"",root:"",foot:"",defs:"",body:""},this._defs={gradient:{},clipping:{}}}Rn._update=function(t,e,n){qn=e,En=e.__values__,t.attr(Bn,n,this);var i=Dn[t.type];i&&i.call(this,t,e,n),qn&&this.style(qn,n)},Rn.style=function(t,e){var n,i,r,o,s;if(null!=e)for(n=0,i=Mn.length;n<i;++n)s=e[r=Mn[n]],"font"===r&&(s=Ne(e)),s!==En[r]&&(o=An[r],null==s?"fill"===o?t.style.setProperty(o,"none"):t.style.removeProperty(o):(h(s)&&(s=c(s,this._defs.gradient,Vn())),t.style.setProperty(o,s+"")),En[r]=s)};var Wn,Gn=e.inherits(Hn,sn),Un=sn.prototype;function Xn(t,e,n,i){Wn[i||t]=e}function jn(t,e,n,i){if(null==t)return"";var r,o,s,a,u,l="";for("bgrect"===n&&!1===e.interactive&&(l+="pointer-events: none; "),"bgfore"===n&&(!1===e.interactive&&(l+="pointer-events: none; "),l+="display: none; "),"image"===n&&!1===t.smooth&&(l+="image-rendering: optimizeSpeed; image-rendering: pixelated; "),"text"===n&&(l+="font-family: "+Ne(t)+"; ",l+="font-size: "+Ce(t)+"px; ",t.fontStyle&&(l+="font-style: "+t.fontStyle+"; "),t.fontVariant&&(l+="font-variant: "+t.fontVariant+"; "),t.fontWeight&&(l+="font-weight: "+t.fontWeight+"; ")),r=0,o=Mn.length;r<o;++r)s=Mn[r],a=An[s],null==(u=t[s])?"fill"===a&&(l+="fill: none; "):"transparent"!==u||"fill"!==a&&"stroke"!==a?(h(u)&&(u=c(u,i.gradient,"")),l+=a+": "+u+"; "):l+=a+": none; ";return l?'style="'+l.trim()+'"':null}function Fn(t){return t.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;")}Gn.resize=function(t,e,n,i){Un.resize.call(this,t,e,n,i);var r=this._origin,o=this._text,s={class:"marks",width:this._width*this._scale,height:this._height*this._scale,viewBox:"0 0 "+this._width+" "+this._height};for(var a in Tn)s[a]=Tn[a];o.head=kn("svg",s);var u=this._bgcolor;return"transparent"!==u&&"none"!==u||(u=null),o.bg=u?kn("rect",{width:this._width,height:this._height,style:"fill: "+u+";"})+wn("rect"):"",o.root=kn("g",{transform:"translate("+r+")"}),o.foot=wn("g")+wn("svg"),this},Gn.background=function(){var t=Un.background.apply(this,arguments);return arguments.length&&this._text.head&&this.resize(this._width,this._height,this._origin,this._scale),t},Gn.svg=function(){var t=this._text;return t.head+t.bg+t.defs+t.root+t.body+t.foot},Gn._render=function(t){return this._text.body=this.mark(t),this._text.defs=this.buildDefs(),this},Gn.buildDefs=function(){var t,e,n,i,r,o=this._defs,s="";for(e in o.gradient){for(r=(n=o.gradient[e]).stops,"radial"===n.gradient?(s+=kn(i="pattern",{id:l+e,viewBox:"0,0,1,1",width:"100%",height:"100%",preserveAspectRatio:"xMidYMid slice"}),s+=kn("rect",{width:"1",height:"1",fill:"url(#"+e+")"})+wn("rect"),s+=wn(i),s+=kn(i="radialGradient",{id:e,fx:n.x1,fy:n.y1,fr:n.r1,cx:n.x2,cy:n.y2,r:n.r2})):s+=kn(i="linearGradient",{id:e,x1:n.x1,x2:n.x2,y1:n.y1,y2:n.y2}),t=0;t<r.length;++t)s+=kn("stop",{offset:r[t].offset,"stop-color":r[t].color})+wn("stop");s+=wn(i)}for(e in o.clipping)n=o.clipping[e],s+=kn("clipPath",{id:e}),n.path?s+=kn("path",{d:n.path})+wn("path"):s+=kn("rect",{x:0,y:0,width:n.width,height:n.height})+wn("rect"),s+=wn("clipPath");return s.length>0?kn("defs")+s+wn("defs"):""},Gn.attributes=function(t,e){return Wn={},t(Xn,e,this),Wn},Gn.href=function(t){var e,n=this,i=t.href;if(i){if(e=n._hrefs&&n._hrefs[i])return e;n.sanitizeURL(i).then((function(t){t["xlink:href"]=t.href,t.href=null,(n._hrefs||(n._hrefs={}))[i]=t}))}return null},Gn.mark=function(t){var n,i=this,r=Ve[t.marktype],o=r.tag,s=this._defs,a="";function u(u){var l=i.href(u);if(l&&(a+=kn("a",l)),n="g"!==o?jn(u,t,o,s):null,a+=kn(o,i.attributes(r.attr,u),n),"text"===o){const t=Le(u);if(e.isArray(t)){const e={x:0,dy:Pe(u)};for(let n=0;n<t.length;++n)a+=kn("tspan",n?e:null)+Fn(Se(u,t[n]))+wn("tspan")}else a+=Fn(Se(u,t))}else if("g"===o){const e=u.strokeForeground,n=u.fill,o=u.stroke;e&&o&&(u.stroke=null),a+=kn("path",i.attributes(r.background,u),jn(u,t,"bgrect",s))+wn("path"),a+=kn("g",i.attributes(r.content,u))+i.markGroup(u)+wn("g"),e&&o?(n&&(u.fill=null),u.stroke=o,a+=kn("path",i.attributes(r.foreground,u),jn(u,t,"bgrect",s))+wn("path"),n&&(u.fill=n)):a+=kn("path",i.attributes(r.foreground,u),jn({},t,"bgfore",s))+wn("path")}a+=wn(o),l&&(a+=wn("a"))}return"g"!==o&&!1===t.interactive&&(n='style="pointer-events: none;"'),a+=kn("g",{class:tn(t),"clip-path":t.clip?te(i,t,t.group):null},n),r.nested?t.items&&t.items.length&&u(t.items[0]):Et(t,u),a+wn("g")},Gn.markGroup=function(t){var e=this,n="";return Et(t,(function(t){n+=e.mark(t)})),n};var Jn={Canvas:"canvas",PNG:"png",SVG:"svg",None:"none"},Yn={};function Qn(t,e,n,i){if(function(t,e,n){return t.bounds&&e.intersects(t.bounds)&&("group"===t.marktype||!1!==t.interactive&&(!n||n(t)))}(t,e,n)){const r=t.items,o=t.marktype,s=r.length;let a=0;if("group"===o)for(;a<s;++a)Zn(r[a],e,n,i);else for(const t=Ve[o].isect;a<s;++a){let n=r[a];$n(n,e,t)&&i.push(n)}}return i}function Zn(t,e,n,i){n&&n(t.mark)&&$n(t,e,Ve.group.isect)&&i.push(t);const r=t.items,o=r&&r.length;if(o){const s=t.x||0,a=t.y||0;e.translate(-s,-a);for(let t=0;t<o;++t)Qn(r[t],e,n,i);e.translate(s,a)}return i}function $n(t,e,n){const i=t.bounds;return e.encloses(i)||e.intersects(i)&&n(t,e)}Yn.canvas=Yn.png={renderer:vn,headless:vn,handler:ln},Yn.svg={renderer:Cn,headless:Hn,handler:_n},Yn.none={};var Kn=new s;var ti=1e-9;function ei(t,n,i){return t===n||("path"===i?ni(t,n):t instanceof Date&&n instanceof Date?+t==+n:e.isNumber(t)&&e.isNumber(n)?Math.abs(t-n)<=ti:t&&n&&(e.isObject(t)||e.isObject(n))?null!=t&&null!=n&&function(t,e){var n,i,r=Object.keys(t),o=Object.keys(e);if(r.length!==o.length)return!1;for(r.sort(),o.sort(),i=r.length-1;i>=0;i--)if(r[i]!=o[i])return!1;for(i=r.length-1;i>=0;i--)if(n=r[i],!ei(t[n],e[n],n))return!1;return typeof t==typeof e}(t,n):t==n)}function ni(t,e){return ei(w(t),w(e))}t.Bounds=s,t.CanvasHandler=ln,t.CanvasRenderer=vn,t.Gradient=function(t,e){var n,i=[];return n={gradient:"linear",x1:t?t[0]:0,y1:t?t[1]:0,x2:e?e[0]:1,y2:e?e[1]:0,stops:i,stop:function(t,e){return i.push({offset:t,color:e}),n}}},t.GroupItem=v,t.Handler=nn,t.Item=d,t.Marks=Ve,t.RenderType=Jn,t.Renderer=sn,t.ResourceLoader=g,t.SVGHandler=_n,t.SVGRenderer=Cn,t.SVGStringRenderer=Hn,t.Scenegraph=Fe,t.boundClip=function(t){var n=t.clip;if(e.isFunction(n))n(dt(Kn.clear()));else{if(!n)return;Kn.set(0,0,t.group.width,t.group.height)}t.bounds.intersect(Kn)},t.boundContext=dt,t.boundItem=He,t.boundMark=Ge,t.boundStroke=ut,t.closeTag=wn,t.domChild=$e,t.domClear=Ke,t.domCreate=Qe,t.domFind=Ze,t.font=Oe,t.fontFamily=Ne,t.fontSize=Ce,t.intersect=function(t,n,i){const r=[],o=(new s).union(n),a=t.marktype;return a?Qn(t,o,i,r):"group"===a?Zn(t,o,i,r):e.error("Intersect scene must be mark node or group item.")},t.intersectBoxLine=Ct,t.intersectPath=Tt,t.intersectPoint=At,t.intersectRule=zt,t.lineHeight=Pe,t.multiLineOffset=function(t){const n=Le(t);return(e.isArray(n)?n.length-1:0)*Pe(t)},t.openTag=kn,t.pathCurves=x,t.pathEqual=ni,t.pathParse=w,t.pathRectangle=F,t.pathRender=q,t.pathSymbols=I,t.pathTrail=J,t.point=en,t.renderModule=function(t,e){return t=String(t||"").toLowerCase(),arguments.length>1?(Yn[t]=e,this):Yn[t]},t.resetSVGClipId=function(){Kt=1},t.sceneEqual=ei,t.sceneFromJSON=je,t.scenePickVisit=Dt,t.sceneToJSON=Xe,t.sceneVisit=Et,t.sceneZOrder=qt,t.textMetrics=we,Object.defineProperty(t,"__esModule",{value:!0})}));

package.json

 {
   "name": "vega-scenegraph",
-  "version": "4.4.1",
+  "version": "4.5.0",
   "description": "Vega scenegraph and renderers.",
@@ -26,5 +26,5 @@ "license": "BSD-3-Clause",
     "vega-loader": "^4.1.3",
-    "vega-util": "^1.12.0"
+    "vega-util": "^1.12.1"
   },
-  "gitHead": "b460f55b7bdf668e855ed2f00d9c88f4e836dcb9"
+  "gitHead": "b690910bacfcb2580511e262400e496d9b14b04f"
 }

schema.js

@@ -243,3 +243,5 @@ function duplicate(_) {
       "cornerRadiusBottomLeft": { "type": "number" },
-      "items": { "type": "array", "items": { "$ref": "#/refs/mark" } }
+      "items": { "type": "array", "items": { "$ref": "#/refs/mark" } },
+      "strokeForeground": { "type": "boolean" },
+      "strokeOffset": { "type": "number" }
     }
@@ -246,0 +248,0 @@ },

src/bound/boundContext.js

@@ -1,4 +0,4 @@
-import {HalfPi, Tau} from '../util/constants';
+import {Epsilon, HalfPi, Tau} from '../util/constants';
 
-var bounds,
+var bounds, lx, ly,
     circleThreshold = Tau - 1e-8;
@@ -15,2 +15,8 @@
 
+function addL(x, y) { add(lx = x, ly = y); }
+
+function addX(x) { add(x, bounds.y1); }
+
+function addY(y) { add(bounds.x1, y); }
+
 context.beginPath = noop;
@@ -20,67 +26,96 @@
 
-context.moveTo = add;
+context.moveTo = addL;
 
-context.lineTo = add;
+context.lineTo = addL;
 
 context.rect = function(x, y, w, h) {
-  add(x, y);
   add(x + w, y + h);
+  addL(x, y);
 };
 
 context.quadraticCurveTo = function(x1, y1, x2, y2) {
-  add(x1, y1);
-  add(x2, y2);
+  quadExtrema(lx, x1, x2, addX);
+  quadExtrema(ly, y1, y2, addY);
+  addL(x2, y2);
 };
 
+function quadExtrema(x0, x1, x2, cb) {
+  const t = (x0 - x1) / (x0 + x2 - 2 * x1);
+  if (0 < t && t < 1) cb(x0 + (x1 - x0) * t);
+}
+
 context.bezierCurveTo = function(x1, y1, x2, y2, x3, y3) {
-  add(x1, y1);
-  add(x2, y2);
-  add(x3, y3);
+  cubicExtrema(lx, x1, x2, x3, addX);
+  cubicExtrema(ly, y1, y2, y3, addY);
+  addL(x3, y3);
 };
 
+function cubicExtrema(x0, x1, x2, x3, cb) {
+  const a = x3 - x0 + 3 * x1 - 3 * x2,
+        b = x0 + x2 - 2 * x1,
+        c = x0 - x1;
+
+  let t0 = 0, t1 = 0, r;
+
+  // solve for parameter t
+  if (Math.abs(a) > Epsilon) {
+    // quadratic equation
+    r = b * b + c * a;
+    if (r >= 0) {
+      r = Math.sqrt(r);
+      t0 = (-b + r) / a;
+      t1 = (-b - r) / a;
+    }
+  } else {
+    // linear equation
+    t0 = 0.5 * c / b;
+  }
+
+  // calculate position
+  if (0 < t0 && t0 < 1) cb(cubic(t0, x0, x1, x2, x3));
+  if (0 < t1 && t1 < 1) cb(cubic(t1, x0, x1, x2, x3));
+}
+
+function cubic(t, x0, x1, x2, x3) {
+  const s = 1 - t, s2 = s * s, t2 = t * t;
+  return (s2 * s * x0) + (3 * s2 * t * x1) + (3 * s * t2 * x2) + (t2 * t * x3);
+}
+
 context.arc = function(cx, cy, r, sa, ea, ccw) {
+  // store last point on path
+  lx = r * Math.cos(ea) + cx;
+  ly = r * Math.sin(ea) + cy;
+
   if (Math.abs(ea - sa) > circleThreshold) {
+    // treat as full circle
     add(cx - r, cy - r);
     add(cx + r, cy + r);
-    return;
-  }
+  } else {
+    const update = a => add(r * Math.cos(a) + cx, r * Math.sin(a) + cy);
+    let s, i;
 
-  var xmin = Infinity, xmax = -Infinity,
-      ymin = Infinity, ymax = -Infinity,
-      s, i, x, y;
+    // sample end points
+    update(sa);
+    update(ea);
 
-  function update(a) {
-    x = r * Math.cos(a);
-    y = r * Math.sin(a);
-    if (x < xmin) xmin = x;
-    if (x > xmax) xmax = x;
-    if (y < ymin) ymin = y;
-    if (y > ymax) ymax = y;
-  }
+    // sample interior points aligned with 90 degrees
+    if (ea !== sa) {
+      sa = sa % Tau; if (sa < 0) sa += Tau;
+      ea = ea % Tau; if (ea < 0) ea += Tau;
 
-  // Sample end points and interior points aligned with 90 degrees
-  update(sa);
-  update(ea);
+      if (ea < sa) {
+        ccw = !ccw; // flip direction
+        s = sa; sa = ea; ea = s; // swap end-points
+      }
 
-  if (ea !== sa) {
-    sa = sa % Tau; if (sa < 0) sa += Tau;
-    ea = ea % Tau; if (ea < 0) ea += Tau;
-
-    if (ea < sa) {
-      ccw = !ccw; // flip direction
-      s = sa; sa = ea; ea = s; // swap end-points
+      if (ccw) {
+        ea -= Tau;
+        s = sa - (sa % HalfPi);
+        for (i=0; i<4 && s>ea; ++i, s-=HalfPi) update(s);
+      } else {
+        s = sa - (sa % HalfPi) + HalfPi;
+        for (i=0; i<4 && s<ea; ++i, s=s+HalfPi) update(s);
+      }
     }
-
-    if (ccw) {
-      ea -= Tau;
-      s = sa - (sa % HalfPi);
-      for (i=0; i<4 && s>ea; ++i, s-=HalfPi) update(s);
-    } else {
-      s = sa - (sa % HalfPi) + HalfPi;
-      for (i=0; i<4 && s<ea; ++i, s=s+HalfPi) update(s);
-    }
   }
-
-  add(cx + xmin, cy + ymin);
-  add(cx + xmax, cy + ymax);
 };

src/marks/group.js

@@ -12,3 +12,8 @@ import {hasCornerRadius, rectangle} from '../path/shapes';
 
-var StrokeOffset = 0.5;
+function offset(item) {
+  var sw = (sw = item.strokeWidth) != null ? sw : 1;
+  return item.strokeOffset != null ? item.strokeOffset
+    : item.stroke && sw > 0.5 && sw < 1.5 ? 0.5 - Math.abs(sw - 1)
+    : 0;
+}
 
@@ -19,9 +24,22 @@ function attr(emit, item) {
 
+function emitRectangle(emit, item) {
+  var off = offset(item);
+  emit('d', rectangle(null, item, off, off));
+}
+
 function background(emit, item) {
-  var offset = item.stroke ? StrokeOffset : 0;
   emit('class', 'background');
-  emit('d', rectangle(null, item, offset, offset));
+  emitRectangle(emit, item);
 }
 
-function foreground(emit, item, renderer) {
+function foreground(emit, item) {
+  emit('class', 'foreground');
+  if (item.strokeForeground) {
+    emitRectangle(emit, item);
+  } else {
+    emit('d', '');
+  }
+}
+
+function content(emit, item, renderer) {
   var url = item.clip ? clip(renderer, item, item) : null;
@@ -48,9 +66,10 @@ emit('clip-path', url);
 
-function backgroundPath(context, group) {
-  var offset = group.stroke ? StrokeOffset : 0;
+function rectanglePath(context, group, x, y) {
+  var off = offset(group);
   context.beginPath();
-  rectangle(context, group, offset, offset);
+  rectangle(context, group, (x || 0) + off, (y || 0) + off);
 }
 
-var hitBackground = hitPath(backgroundPath);
+var hitBackground = hitPath(rectanglePath);
+var hitForeground = hitPath(rectanglePath, false);
 
@@ -63,23 +82,19 @@ function draw(context, scene, bounds) {
         gy = group.y || 0,
-        opacity;
+        fore = group.strokeForeground,
+        opacity = group.opacity == null ? 1 : group.opacity;
 
-    // setup graphics context
-    context.save();
-    context.translate(gx, gy);
-
     // draw group background
-    if (group.stroke || group.fill) {
-      opacity = group.opacity == null ? 1 : group.opacity;
-      if (opacity > 0) {
-        backgroundPath(context, group);
-        if (group.fill && fill(context, group, opacity)) {
-          context.fill();
-        }
-        if (group.stroke && stroke(context, group, opacity)) {
-          context.stroke();
-        }
+    if ((group.stroke || group.fill) && opacity) {
+      rectanglePath(context, group, gx, gy);
+      if (group.fill && fill(context, group, opacity)) {
+        context.fill();
       }
+      if (group.stroke && !fore && stroke(context, group, opacity)) {
+        context.stroke();
+      }
     }
 
-    // set clip and bounds
+    // setup graphics context, set clip and bounds
+    context.save();
+    context.translate(gx, gy);
     if (group.clip) clipGroup(context, group);
@@ -96,2 +111,10 @@ if (bounds) bounds.translate(-gx, -gy);
     context.restore();
+
+    // draw group foreground
+    if (fore && group.stroke && opacity) {
+      rectanglePath(context, group, gx, gy);
+      if (stroke(context, group, opacity)) {
+        context.stroke();
+      }
+    }
   });
@@ -110,3 +133,3 @@ }
   return pickVisit(scene, function(group) {
-    var hit, dx, dy, dw, dh, b, c;
+    var hit, fore, ix, dx, dy, dw, dh, b, c;
 
@@ -134,5 +157,15 @@ // first hit test bounding box
       context.restore();
-      return;
+      return null;
     }
 
+    fore = group.strokeForeground;
+    ix = scene.interactive !== false;
+
+    // hit test against group foreground
+    if (ix && fore && group.stroke
+        && hitForeground(context, group, cx, cy)) {
+      context.restore();
+      return group;
+    }
+
     // hit test against contained marks
@@ -146,4 +179,3 @@ hit = pickVisit(group, function(mark) {
     // hit test against group background
-    if (!hit && scene.interactive !== false
-        && (group.fill || group.stroke)
+    if (!hit && ix && (group.fill || (!fore && group.stroke))
         && hitBackground(context, group, cx, cy)) {
@@ -173,4 +205,5 @@ hit = group;
   isect:      intersectRect,
+  content:    content,
   background: background,
   foreground: foreground
 };

src/SVGRenderer.js

@@ -209,2 +209,3 @@ import Renderer from './Renderer';
   }
+  domClear(el, 1);
 
@@ -352,3 +353,3 @@ return index + 1;
 function recurse(renderer, el, group) {
-  el = el.lastChild;
+  el = el.lastChild.previousSibling;
   var prev, idx = 0;
@@ -380,12 +381,16 @@
 
-      // if group, create background and foreground elements
+      // if group, create background, content, and foreground elements
       if (tag === 'g') {
         var bg = domCreate(doc, 'path', ns);
-        bg.setAttribute('class', 'background');
         node.appendChild(bg);
         bg.__data__ = item;
 
-        var fg = domCreate(doc, 'g', ns);
+        var cg = domCreate(doc, 'g', ns);
+        node.appendChild(cg);
+        cg.__data__ = item;
+
+        var fg = domCreate(doc, 'path', ns);
         node.appendChild(fg);
         fg.__data__ = item;
+        fg.__values__ = {fill: 'default'};
       }
@@ -418,8 +423,13 @@ }
   group: function(mdef, el, item) {
-    values = el.__values__; // use parent's values hash
+    var fg, bg;
 
-    element = el.childNodes[1];
+    element = fg = el.childNodes[2];
+    values = fg.__values__;
     mdef.foreground(emit, item, this);
 
-    element = el.childNodes[0];
+    values = el.__values__; // use parent's values hash
+    element = el.childNodes[1];
+    mdef.content(emit, item, this);
+
+    element = bg = el.childNodes[0];
     mdef.background(emit, item, this);
@@ -429,5 +439,28 @@
     if (value !== values.events) {
-      element.style.setProperty('pointer-events', value);
+      fg.style.setProperty('pointer-events', value);
+      bg.style.setProperty('pointer-events', value);
       values.events = value;
     }
+
+    if (item.strokeForeground && item.stroke) {
+      const fill = item.fill;
+      fg.style.removeProperty('display');
+
+      // set style of background
+      this.style(bg, item);
+      bg.style.removeProperty('stroke');
+
+      // set style of foreground
+      if (fill) item.fill = null;
+      values = fg.__values__;
+      this.style(fg, item);
+      if (fill) item.fill = fill;
+
+      // leave element null to prevent downstream styling
+      element = null;
+    } else {
+      // ensure foreground is ignored
+      fg.style.setProperty('display', 'none');
+      fg.style.setProperty('fill', 'none');
+    }
   },
@@ -510,3 +543,3 @@ image: function(mdef, el, item) {
   // note: element may be modified by 'extra' method
-  this.style(element, item);
+  if (element) this.style(element, item);
 };
@@ -513,0 +546,0 @@

src/SVGStringRenderer.js

@@ -250,8 +250,29 @@ import Renderer from './Renderer';
     } else if (tag === 'g') {
+      const fore = item.strokeForeground,
+            fill = item.fill,
+            stroke = item.stroke;
+
+      if (fore && stroke) {
+        item.stroke = null;
+      }
+
       str += openTag('path', renderer.attributes(mdef.background, item),
         applyStyles(item, scene, 'bgrect', defs)) + closeTag('path');
 
-      str += openTag('g', renderer.attributes(mdef.foreground, item))
+      str += openTag('g', renderer.attributes(mdef.content, item))
         + renderer.markGroup(item)
         + closeTag('g');
+
+      if (fore && stroke) {
+        if (fill) item.fill = null;
+        item.stroke = stroke;
+
+        str += openTag('path', renderer.attributes(mdef.foreground, item),
+          applyStyles(item, scene, 'bgrect', defs)) + closeTag('path');
+
+        if (fill) item.fill = fill;
+      } else {
+        str += openTag('path', renderer.attributes(mdef.foreground, item),
+          applyStyles({}, scene, 'bgfore', defs)) + closeTag('path');
+      }
     }
@@ -292,2 +313,9 @@
 
+  if (tag === 'bgfore') {
+    if (mark.interactive === false) {
+      s += 'pointer-events: none; ';
+    }
+    s += 'display: none; ';
+  }
+
   if (tag === 'image') {
@@ -294,0 +322,0 @@ if (o.smooth === false) {

src/util/constants.js

@@ -1,4 +0,5 @@
-export var DegToRad = Math.PI / 180;
-export var HalfPi = Math.PI / 2;
-export var Tau = Math.PI * 2;
-export var HalfSqrt3 = Math.sqrt(3) / 2;
+export const DegToRad = Math.PI / 180;
+export const Epsilon = 1e-14;
+export const HalfPi = Math.PI / 2;
+export const Tau = Math.PI * 2;
+export const HalfSqrt3 = Math.sqrt(3) / 2;

src/util/serialize.js

@@ -9,2 +9,3 @@ import boundMark from '../bound/boundMark';
   'strokeDash', 'strokeDashOffset',                             // stroke dash
+  'strokeForeground', 'strokeOffset',                           // group
   'startAngle', 'endAngle', 'innerRadius', 'outerRadius',       // arc
@@ -11,0 +12,0 @@ 'cornerRadius', 'padAngle',                                   // arc, rect

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increased by2.1%

Dependency changes

• Updatedvega-util@^1.12.1