From 0a6bd9541450bf36dc45a6d85fcc38138a4eea98 Mon Sep 17 00:00:00 2001 From: Anton Lavrenov Date: Thu, 30 Aug 2018 13:49:43 +0300 Subject: [PATCH] add docs, change tests --- CHANGELOG.md | 4 ++ konva.js | 109 +++++++++++++++++++++++++++++++++- konva.min.js | 6 +- src/shapes/Path.js | 64 +++++++++++++++++--- src/shapes/Text.js | 2 +- test/unit/shapes/Path-test.js | 36 ++++++++++- 6 files changed, 206 insertions(+), 15 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index cf08e64c..90d1ae93 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5,6 +5,10 @@ This project adheres to [Semantic Versioning](http://semver.org/). ## [new version][unreleased] +### Added + +* new methods `path.getLength()` and `path.getPointAtLength(val)` + ## [2.2.2][2018-08-21] ### Changed diff --git a/konva.js b/konva.js index a46c854e..f7b522ba 100644 --- a/konva.js +++ b/konva.js @@ -2,7 +2,7 @@ * Konva JavaScript Framework v2.2.2 * http://konvajs.github.io/ * Licensed under the MIT - * Date: Tue Aug 21 2018 + * Date: Thu Aug 30 2018 * * Original work Copyright (C) 2011 - 2013 by Eric Rowell (KineticJS) * Modified work Copyright (C) 2014 - present by Anton Lavrenov (Konva) @@ -15287,7 +15287,7 @@ return this.textWidth; }, /** - * get text height + * get height of one line text * @method * @memberof Konva.Text.prototype * @returns {Number} @@ -16635,8 +16635,16 @@ this.className = 'Path'; this.dataArray = Konva.Path.parsePathData(this.getData()); + this.pathLength = 0; + for (var i = 0; i < this.dataArray.length; ++i) { + this.pathLength += this.dataArray[i].pathLength; + } this.on('dataChange.konva', function() { that.dataArray = Konva.Path.parsePathData(this.getData()); + this.pathLength = 0; + for (var i = 0; i < this.dataArray.length; ++i) { + this.pathLength += this.dataArray[i].pathLength; + } }); this.sceneFunc(this._sceneFunc); @@ -16717,6 +16725,103 @@ width: Math.round(maxX - minX), height: Math.round(maxY - minY) }; + }, + /** + * Return length of the path. + * @method + * @memberof Konva.Path.prototype + * @returns {Number} length + * @example + * var length = path.getLength(); + */ + getLength: function() { + return this.pathLength; + }, + /** + * Get point on path at specific length of the path + * @method + * @memberof Konva.Path.prototype + * @param {Number} length length + * @returns {Object} point {x,y} point + * @example + * var point = path.getPointAtLength(10); + */ + getPointAtLength: function(length) { + var point, + i = 0, + ii = this.dataArray.length; + + if (!ii) { + return null; + } + + while (i < ii && length > this.dataArray[i].pathLength) { + length -= this.dataArray[i].pathLength; + ++i; + } + + if (i === ii) { + point = this.dataArray[i - 1].points.slice(-2); + return { + x: point[0], + y: point[1] + }; + } + + if (length < 0.01) { + point = this.dataArray[i].points.slice(0, 2); + return { + x: point[0], + y: point[1] + }; + } + + var cp = this.dataArray[i]; + var p = cp.points; + switch (cp.command) { + case 'L': + return Konva.Path.getPointOnLine( + length, + cp.start.x, + cp.start.y, + p[0], + p[1] + ); + case 'C': + return Konva.Path.getPointOnCubicBezier( + length / cp.pathLength, + cp.start.x, + cp.start.y, + p[0], + p[1], + p[2], + p[3], + p[4], + p[5] + ); + case 'Q': + return Konva.Path.getPointOnQuadraticBezier( + length / cp.pathLength, + cp.start.x, + cp.start.y, + p[0], + p[1], + p[2], + p[3] + ); + case 'A': + var cx = p[0], + cy = p[1], + rx = p[2], + ry = p[3], + theta = p[4], + dTheta = p[5], + psi = p[6]; + theta += dTheta * length / cp.pathLength; + return Konva.Path.getPointOnEllipticalArc(cx, cy, rx, ry, theta, psi); + } + + return null; } }; Konva.Util.extend(Konva.Path, Konva.Shape); diff --git a/konva.min.js b/konva.min.js index c2a88dba..5fb830e6 100644 --- a/konva.min.js +++ b/konva.min.js @@ -2,14 +2,14 @@ * Konva JavaScript Framework v2.2.2 * http://konvajs.github.io/ * Licensed under the MIT - * Date: Tue Aug 21 2018 + * Date: Thu Aug 30 2018 * * Original work Copyright (C) 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0===t&&(t=this._time),this.func(t,this.begin,this._change,this.duration)},play:function(){this.state=2,this._startTime=this.getTimer()-this._time,this.onEnterFrame(),this.fire("onPlay")},reverse:function(){this.state=3,this._time=this.duration-this._time,this._startTime=this.getTimer()-this._time,this.onEnterFrame(),this.fire("onReverse")},seek:function(t){this.pause(),this._time=t,this.update(),this.fire("onSeek")},reset:function(){this.pause(),this._time=0,this.update(),this.fire("onReset")},finish:function(){this.pause(),this._time=this.duration,this.update(),this.fire("onFinish")},update:function(){this.setPosition(this.getPosition(this._time))},onEnterFrame:function(){var t=this.getTimer()-this._startTime;2===this.state?this.setTime(t):3===this.state&&this.setTime(this.duration-t)},pause:function(){this.state=1,this.fire("onPause")},getTimer:function(){return(new Date).getTime()}},Konva.Tween=function(t){var e,i,n=this,a=t.node,r=a._id,o=t.easing||Konva.Easings.Linear,s=!!t.yoyo;e=void 0===t.duration?.3:0===t.duration?.001:t.duration,this.node=a,this._id=c++;var h=a.getLayer()||(a instanceof Konva.Stage?a.getLayers():null);for(i in h||Konva.Util.error("Tween constructor have `node` that is not in a layer. Please add node into layer first."),this.anim=new Konva.Animation(function(){n.tween.onEnterFrame()},h),this.tween=new d(i,function(t){n._tweenFunc(t)},o,0,1,1e3*e,s),this._addListeners(),Konva.Tween.attrs[r]||(Konva.Tween.attrs[r]={}),Konva.Tween.attrs[r][this._id]||(Konva.Tween.attrs[r][this._id]={}),Konva.Tween.tweens[r]||(Konva.Tween.tweens[r]={}),t)void 0===l[i]&&this._addAttr(i,t[i]);this.reset(),this.onFinish=t.onFinish,this.onReset=t.onReset},Konva.Tween.attrs={},Konva.Tween.tweens={},Konva.Tween.prototype={_addAttr:function(t,e){var i,n,a,r,o,s,h,l=this.node,c=l._id;if((a=Konva.Tween.tweens[c][t])&&delete Konva.Tween.attrs[c][a][t],i=l.getAttr(t),Konva.Util._isArray(e))for(n=[],o=Math.max(e.length,i.length),"points"===t&&e.length!==i.length&&(e.length>i.length?(h=i,i=Konva.Util._prepareArrayForTween(i,e,l.closed())):(s=e,e=Konva.Util._prepareArrayForTween(e,i,l.closed()))),r=0;r>>1,F=_.slice(0,w+1),T=this._getTextWidth(F)+y;T<=l?(S=w+1,x=F+(v?"…":""),C=T):b=w}if(!x)break;if(g){var P,A=_[x.length];0<(P=(" "===A||"-"===A)&&C<=l?x.length:Math.max(x.lastIndexOf(" "),x.lastIndexOf("-"))+1)&&(S=P,x=x.slice(0,S),C=this._getTextWidth(x))}if(this._addTextLine(x),i=Math.max(i,C),d+=n,!f||s&&ce?v=Konva.Path.getPointOnLine(e,g.x,g.y,p.points[0],p.points[1],g.x,g.y):p=void 0;break;case"A":var o=p.points[4],s=p.points[5],h=p.points[4]+s;0===_?_=o+1e-8:ip.pathLength?1e-8:e/p.pathLength:ithis.duration?this.yoyo?(this._time=this.duration,this.reverse()):this.finish():t<0?this.yoyo?(this._time=0,this.play()):this.reset():(this._time=t,this.update())},getTime:function(){return this._time},setPosition:function(t){this.prevPos=this._pos,this.propFunc(t),this._pos=t},getPosition:function(t){return void 0===t&&(t=this._time),this.func(t,this.begin,this._change,this.duration)},play:function(){this.state=2,this._startTime=this.getTimer()-this._time,this.onEnterFrame(),this.fire("onPlay")},reverse:function(){this.state=3,this._time=this.duration-this._time,this._startTime=this.getTimer()-this._time,this.onEnterFrame(),this.fire("onReverse")},seek:function(t){this.pause(),this._time=t,this.update(),this.fire("onSeek")},reset:function(){this.pause(),this._time=0,this.update(),this.fire("onReset")},finish:function(){this.pause(),this._time=this.duration,this.update(),this.fire("onFinish")},update:function(){this.setPosition(this.getPosition(this._time))},onEnterFrame:function(){var t=this.getTimer()-this._startTime;2===this.state?this.setTime(t):3===this.state&&this.setTime(this.duration-t)},pause:function(){this.state=1,this.fire("onPause")},getTimer:function(){return(new Date).getTime()}},Konva.Tween=function(t){var e,i,n=this,a=t.node,r=a._id,o=t.easing||Konva.Easings.Linear,s=!!t.yoyo;e=void 0===t.duration?.3:0===t.duration?.001:t.duration,this.node=a,this._id=c++;var h=a.getLayer()||(a instanceof Konva.Stage?a.getLayers():null);for(i in h||Konva.Util.error("Tween constructor have `node` that is not in a layer. Please add node into layer first."),this.anim=new Konva.Animation(function(){n.tween.onEnterFrame()},h),this.tween=new d(i,function(t){n._tweenFunc(t)},o,0,1,1e3*e,s),this._addListeners(),Konva.Tween.attrs[r]||(Konva.Tween.attrs[r]={}),Konva.Tween.attrs[r][this._id]||(Konva.Tween.attrs[r][this._id]={}),Konva.Tween.tweens[r]||(Konva.Tween.tweens[r]={}),t)void 0===l[i]&&this._addAttr(i,t[i]);this.reset(),this.onFinish=t.onFinish,this.onReset=t.onReset},Konva.Tween.attrs={},Konva.Tween.tweens={},Konva.Tween.prototype={_addAttr:function(t,e){var i,n,a,r,o,s,h,l=this.node,c=l._id;if((a=Konva.Tween.tweens[c][t])&&delete Konva.Tween.attrs[c][a][t],i=l.getAttr(t),Konva.Util._isArray(e))for(n=[],o=Math.max(e.length,i.length),"points"===t&&e.length!==i.length&&(e.length>i.length?(h=i,i=Konva.Util._prepareArrayForTween(i,e,l.closed())):(s=e,e=Konva.Util._prepareArrayForTween(e,i,l.closed()))),r=0;r>>1,F=_.slice(0,w+1),T=this._getTextWidth(F)+y;T<=l?(S=w+1,x=F+(v?"…":""),C=T):b=w}if(!x)break;if(f){var P,A=_[x.length];0<(P=(" "===A||"-"===A)&&C<=l?x.length:Math.max(x.lastIndexOf(" "),x.lastIndexOf("-"))+1)&&(S=P,x=x.slice(0,S),C=this._getTextWidth(x))}if(this._addTextLine(x),i=Math.max(i,C),d+=n,!g||s&&cthis.dataArray[i].pathLength;)t-=this.dataArray[i].pathLength,++i;if(i===n)return{x:(e=this.dataArray[i-1].points.slice(-2))[0],y:e[1]};if(t<.01)return{x:(e=this.dataArray[i].points.slice(0,2))[0],y:e[1]};var a=this.dataArray[i],r=a.points;switch(a.command){case"L":return Konva.Path.getPointOnLine(t,a.start.x,a.start.y,r[0],r[1]);case"C":return Konva.Path.getPointOnCubicBezier(t/a.pathLength,a.start.x,a.start.y,r[0],r[1],r[2],r[3],r[4],r[5]);case"Q":return Konva.Path.getPointOnQuadraticBezier(t/a.pathLength,a.start.x,a.start.y,r[0],r[1],r[2],r[3]);case"A":var o=r[0],s=r[1],h=r[2],l=r[3],c=r[4],d=r[5],u=r[6];return c+=d*t/a.pathLength,Konva.Path.getPointOnEllipticalArc(o,s,h,l,c,u)}return null}},Konva.Util.extend(Konva.Path,Konva.Shape),Konva.Path.getLineLength=function(t,e,i,n){return Math.sqrt((i-t)*(i-t)+(n-e)*(n-e))},Konva.Path.getPointOnLine=function(t,e,i,n,a,r,o){void 0===r&&(r=e),void 0===o&&(o=i);var s=(a-i)/(n-e+1e-8),h=Math.sqrt(t*t/(1+s*s));ne?v=Konva.Path.getPointOnLine(e,f.x,f.y,p.points[0],p.points[1],f.x,f.y):p=void 0;break;case"A":var o=p.points[4],s=p.points[5],h=p.points[4]+s;0===_?_=o+1e-8:ip.pathLength?1e-8:e/p.pathLength:i