I have the following code, written for OpenLayers pre 3.20:
fitViewToFeature: function (viewer, feature) {
var pan = ol.animation.pan({
source: viewer.olView.getCenter(),
duration: 1000
})
var zoom = ol.animation.zoom({
resolution: viewer.olView.getResolution(),
duration: 1000
})
viewer.olMap.beforeRender(pan, zoom)
viewer.olView.fit(feature.getGeometry(), viewer.olMap.getSize(), {
padding: [ 100, 100, 100, 100 ],
constrainResolution: false,
maxZoom: 4
})
}
My question is how to translate this function into the new view.animate() syntax introduced in OpenLayers 3.20?
Or alternately, should I open a GitHub issue and request a new option to be added to view.animate?
You should be able to achieve the same animation in a much simpler way, with the duration option of ol.View#fit():
viewer.olView.fit(feature.getGeometry(), {
duration: 1000
});
The above works in OpenLayers 4.x.
#zsero, I use the same function to zoom to the extent of a layer source. I use view.animate() for up to half of my route and at the callback function I use view.fit().
I need to setTimeout on the view.fit() otherwise I have an error message:
Cannot read property 'length' of null at ol.View.updateAnimations_
var origine = view.getCenter();
var destination = ol.extent.getCenter(extent);
var middleDestination = [(origine[0] + destination[0]) / 2, (origine[1] + destination[1]) / 2];
var viewFit = function() {
setTimeout( function() {
view.fit(extent, map.getSize(), {
duration: duration / 2,
padding: [ 64, 10, 10, 328 ],
constrainResolution: false
})
}, 0)
}
var animation = function() {
view.animate({
center: middleDestination,
duration: duration / 2
});
view.animate({
zoom: zoom - backZoom,
duration: duration / 2
}, viewFit);
}
Related
I try to do arrow polyline (like here https://developer.here.com/documentation/maps/3.1.30.17/dev_guide/topics/routing.html -> Show route direction arrows). And I want to add to this routeLine pointerenter event, to make it hold and drag to add endpoints and recalculate road. But then I add pointerevents nothing happens. Tap is working, but pointerenter no. I found only one solution is use use MapEvents, but I have it imported https://js.api.here.com/v3/3.1/mapsjs-mapevents.js, so, as I understand this, it should work.
My code now is really simple:
displayOnMap(result) {
if (result.routes.length) {
result.routes[0].sections.forEach((section) => {
let linestring = H.geo.LineString.fromFlexiblePolyline(section.polyline)
let routeOutline = new H.map.Polyline(linestring, {
style: {
lineWidth: 10,
strokeColor: 'rgba(0, 128, 255, 0.7)',
lineTailCap: 'arrow-tail',
lineHeadCap: 'arrow-head'
}
});
let routeArrows = new H.map.Polyline(linestring, {
style: {
lineWidth: 10,
fillColor: 'white',
strokeColor: 'rgba(255, 255, 255, 1)',
lineDash: [0, 2],
lineTailCap: 'arrow-tail',
lineHeadCap: 'arrow-head'
}
}
);
let routeLine = new H.map.Group({
volatility: true,
objects: [routeOutline, routeArrows]
})
//why pointerenter is not working?
routeLine.addEventListener('pointerenter', function(evt) {
console.log('test 123', evt)
})
let startMarker = new H.map.Marker(section.departure.place.location)
let endMarker = new H.map.Marker(section.arrival.place.location)
this.routeObjects = [routeLine, startMarker, endMarker]
this.map.addObjects(this.routeObjects)
this.map.setCenter(section.departure.place.location)
})
}
};
OK, I found a solution. In this case addEventListener require third parameter (opt_capture) set on "true".Thanks to this group scope listen event listener.
routeLine.addEventListener('pointerenter', function(evt) {
console.log('test 123', evt)
}, true) //<- this true is a key
I'm using ol3/ol4 with ol-ext
I create two layer:
clusterSource = new ol.source.Cluster({
distance: distanceFt,
source: new ol.source.Vector()
});
// Animated cluster layer
clusterLayer = new ol.layer.AnimatedCluster({
name: 'Cluster',
source: clusterSource,
animationDuration: 700, //$("#animatecluster").prop('checked') ? 700 : 0,
// Cluster style
style: getStyle
});
layersArray.push(clusterLayer); // adding to array
sourceReclamos_Eventos = new ol.source.Cluster({
distance: distanceFt,
source: new ol.source.Vector()
});
capaReclamos_Eventos = new ol.layer.AnimatedCluster({
name: "Reclamos_Eventos",
source: sourceReclamos_Eventos,
animationDuration: 700,
style: getStyle
});
layersArray.push(capaReclamos_Eventos);
Later, add that layers in:
selectCluster = new ol.interaction.SelectCluster({
layers: arraySelectCLuster,
// Point radius: to calculate distance between the features
pointRadius: 20,
animate: true, //$("#animatesel").prop('checked'),
// Feature style when it springs apart
featureStyle: featureStyle,
selectCluster: false, // disable cluster selection
});
After load the layers, only persist the Features in the first layer, in the second layer the Features is removed (clear) after zoom changing... why?
please, help
EDIT
I'm adding features using clusterLayer.getSource().addFeatures() and capaReclamos_Eventos.getSource().addFeatures().
function addFeatures_Reclamos_Eventos(ffs, centrar) {
var transform = ol.proj.getTransform('EPSG:4326', 'EPSG:3857');
var features = [];
for (var i = 0; i < ffs.length; i++) {
features[i] = new ol.Feature();
features[i].setProperties(ffs[i]);
var geometry = new ol.geom.Point(transform([parseFloat(ffs[i].lon), parseFloat(ffs[i].lat)]));
features[i].setGeometry(geometry);
}
qweFeature = features;
capaReclamos_Eventos.getSource().addFeatures(features);
removeloading('mapLoading');
if (document.getElementById('botonFiltrar')) {
document.getElementById('botonFiltrar').disabled = false;
}
if (centrar) {
window.setTimeout(function () {
var extent = capaReclamos_Eventos.getSource().getExtent();
map.getView().fit(extent, map.getSize());
}, 700);// 1/2 seg
}
}
I recently began to learn Konva-JS... please help me :)
<script>
var width = window.innerWidth;
var height = window.innerHeight;
function loadImages(sources, callback) {
var assetDir = '/assets/';
var images = {};
var loadedImages = 0;
var numImages = 0;
for(var src in sources) {
numImages++;
}
for(var src in sources) {
images[src] = new Image();
images[src].onload = function() {
if(++loadedImages >= numImages) {
callback(images);
}
};
images[src].src = assetDir + sources[src];
}
}
function isNearOutline(animal, outline) {
var a = animal;
var o = outline;
var ax = a.getX();
var ay = a.getY();
if(ax > o.x - 20 && ax < o.x + 20 && ay > o.y - 20 && ay < o.y + 20) {
return true;
}
else {
return false;
}
}
function drawBackground(background, beachImg, text) {
var context = background.getContext();
context.drawImage(beachImg, 0, 0);
context.setAttr('font', '20pt Calibri');
context.setAttr('textAlign', 'center');
context.setAttr('fillStyle', 'white');
context.fillText(text, background.getStage().getWidth() / 2, 40);
}
function initStage(images) {
var stage = new Konva.Stage({
container: 'container',
width: 578,
height: 530
});
var background = new Konva.Layer();
var animalLayer = new Konva.Layer();
var animalShapes = [];
var score = 0;
// image positions
var animals = {
snake: {
x: 10,
y: 70
},
giraffe: {
x: 90,
y: 70
},
monkey: {
x: 275,
y: 70
},
lion: {
x: 400,
y: 70
}
};
var outlines = {
snake_black: {
x: 275,
y: 350
},
giraffe_black: {
x: 390,
y: 250
},
monkey_black: {
x: 300,
y: 420
},
lion_black: {
x: 100,
y: 390
}
};
// create draggable animals
for(var key in animals) {
// anonymous function to induce scope
(function() {
var privKey = key;
var anim = animals[key];
var animal = new Konva.Image({
image: images[key],
x: anim.x,
y: anim.y,
draggable: true
});
animal.on('dragstart', function() {
this.moveToTop();
animalLayer.draw();
});
/*
* check if animal is in the right spot and
* snap into place if it is
*/
animal.on('dragend', function() {
var outline = outlines[privKey + '_black'];
if(!animal.inRightPlace && isNearOutline(animal, outline)) {
animal.position({
x : outline.x,
y : outline.y
});
animalLayer.draw();
animal.inRightPlace = true;
if(++score >= 4) {
var text = 'You win! Enjoy your booty!';
drawBackground(background, images.beach, text);
}
// disable drag and drop
setTimeout(function() {
animal.draggable(false);
}, 50);
}
});
// make animal glow on mouseover
animal.on('mouseover', function() {
animal.image(images[privKey + '_glow']);
animalLayer.draw();
document.body.style.cursor = 'pointer';
});
// return animal on mouseout
animal.on('mouseout', function() {
animal.image(images[privKey]);
animalLayer.draw();
document.body.style.cursor = 'default';
});
animal.on('dragmove', function() {
document.body.style.cursor = 'pointer';
});
animalLayer.add(animal);
animalShapes.push(animal);
})();
}
// create animal outlines
for(var key in outlines) {
// anonymous function to induce scope
(function() {
var imageObj = images[key];
var out = outlines[key];
var outline = new Konva.Image({
image: imageObj,
x: out.x,
y: out.y
});
animalLayer.add(outline);
})();
}
stage.add(background);
stage.add(animalLayer);
drawBackground(background, images.beach, 'Ahoy! Put the animals on the beach!');
}
var sources = {
beach: 'beach.png',
snake: 'snake.png',
snake_glow: 'snake-glow.png',
snake_black: 'snake-black.png',
lion: 'lion.png',
lion_glow: 'lion-glow.png',
lion_black: 'lion-black.png',
monkey: 'monkey.png',
monkey_glow: 'monkey-glow.png',
monkey_black: 'monkey-black.png',
giraffe: 'giraffe.png',
giraffe_glow: 'giraffe-glow.png',
giraffe_black: 'giraffe-black.png'
};
loadImages(sources, initStage);
</script>
as we can see in this example Animals_on_the_Beach_Game the animal's images are drag-able and can be drop ever where.... but I want to change it in the way that it just can drop on the specific place ... what can I do ?
thank you :)
This is more of a design question, as letting go of the mouse button isn't something you can prevent. It would also be non-intuitive to keep the image attached to the mouse position as you would then need a new mouse event to associate with dropping it. What I've done for a drag and drop UI was to either (1) destroy the dropped shape, or if that wasn't an option, (2) animate the shape back (i.e. snap back) to its original position. Alternatively, you might (3) find the closest likely valid drop target and snap to that location.
First you define lionOrigin, that maybe you already have.
You have to implement the call on the dragend event of the object dragged, so let's say the lion. You have to check position of the lion in relation to the end desired position, let's call it lionDestiny. That can be done with a simple grometry: calculate the distance between to point. We do that with distanceA2B() function.
Now you can establish an offset inside wich you can snap the object, as it is close enough. If the minimal offset is not achieved, then you place the lion back on lionOrigin.
Al last, in konvajs you can use .x() and .y() to easily get or set position to lion.
Something like this:
var lionOrigin = [50,50];
var lionDestiny = [200,200];
var offset = 20;
distanceA2B(a,b) {
return Math.sqrt( ((a[0]-b[0])*(a[0]-b[0])) + ((a[1]-b[1])*(a[1]-b[1])) );
}
lion.on('dragend', (e) => {
var d = distanceA2B([lion.x(),lion.y()],lionDestiny);
if(d<offset){
lion.x(lionDestiny[0]);
lion.y(lionDestiny[1]);
}else{
lion.x(lionOrigin[0]);
lion.y(lionOrigin[1]);
}
});
Hope this helps!
It would have been better if you could explain your question more when you say you want to move any shape to a specific position. Though konva.js provides you with various events through which you can do this. For example, suppose you want to interchange the location of two shapes when you drag and move the first shape to the second and drop it there. In this case, you can use dragend event of konva. So when you move the target element to another element and drop it there, check if they are intersecting each other or not and then interchange their coordinates with each other.
Here is the function to find the intersection between two elements:
haveIntersection(r1, r2) {
return !(
r2.x > r1.x + r1.width ||
r2.x + r2.width < r1.x ||
r2.y > r1.y + r1.height ||
r2.y + r2.height < r1.y
);
}
And from here, you can try to understand the functionality. Though it's in nuxt.js but the events and scripts would be almost same if you are using only javascript. You can find sample code with an explanation for replacing the location of two shapes with each other. So even if you don't want to replace the locations but you want to move your target element to any position this will make you understand how to do this.
I want to draw a line between multiple points from an array of coordinates.
My code looks like :
<button onclick="drawAnimatedLine(new ol.geom.Point(6210355.674114,2592743.9994331785), new ol.geom.Point(8176927.537835015,2255198.08252584), 50, 2000);">Draw Line</button>
And my js looks like :
function drawAnimatedLine(startPt, endPt, steps, time, fn) {
var style = {
strokeColor: "#0500bd",
strokeWidth: 15,
strokeOpacity: 0.5,
strokeColor: '#0000ff'
};
var directionX = (endPt.x - startPt.x) / steps;
var directionY = (endPt.y - startPt.y) / steps;
var i = 0;
var prevLayer;
var lineDraw = setInterval(function () {
console.log("Inside Animate Line");
if (i > steps) {
clearInterval(lineDraw);
if (fn)
fn();
return;
}
var newEndPt = new ol.geom.Point(startPt.x + i * directionX, startPt.y + i * directionY);
var line = new ol.geom.LineString([startPt, newEndPt]);
var fea = new ol.Feature({
geometry:line,
style: style
});
var vec = new ol.layer.Vector();
vec.addFeatures([fea]);
map.addLayer(vec);
if(prevLayer)
{
map.removeLayer(prevLayer);
}
prevLayer = vec;
i++;
}, time / steps);
}
Note : Coordinates will be dynamic but for testing I've passed the sample data in onclick of the button. Please do try to sort out this issue as soon as possible.
I need to display multiple pie charts that are all related to the same data. As such I want them all to be part of the same chart and implement them as individual series.
This all works no problems until I tried to put labels/titles over each individual pie chart. It seems that I can only have a title over the entire group. See jsfiddle
Is there any way to have the titles over each chart?
See above jsfiddle for example
I encountered the same problem, and found this solution via highcharts support forum :
http://highcharts.uservoice.com/forums/55896-general/suggestions/3073133-pie-title
The Highcharts dude has written a plugin that you can see working on the following jsfiddle : http://jsfiddle.net/highcharts/tnSRA/
I have copy-pasted this plugin in a highcharts-plugins.js file that I included in my website, works like a charm!
Here's the plugin code :
/**
* Pie title plugin
* Last revision: 2012-12-21
*/
(function (Highcharts) {
Highcharts.wrap(Highcharts.seriesTypes.pie.prototype, 'render', function (proceed) {
var chart = this.chart,
center = this.center || (this.yAxis && this.yAxis.center),
titleOption = this.options.title,
box;
proceed.call(this);
if (center && titleOption) {
box = {
x: chart.plotLeft + center[0] - 0.5 * center[2],
y: chart.plotTop + center[1] - 0.5 * center[2],
width: center[2],
height: center[2]
};
if (!this.title) {
this.title = this.chart.renderer.label(titleOption.text)
.css(titleOption.style)
.add()
.align(titleOption, null, box);
} else {
this.title.align(titleOption, null, box);
}
}
});
}(Highcharts));
And this is how you configure your title (put this in your series elements) :
title: {
// align: 'left',
// x: 0
// style: { color: XXX, fontStyle: etc }
text: '<b>Pie 1</b><br>Subtext',
verticalAlign: 'top',
y: -40
},
To further improve on this, the code below correctly handles left, center, and right justification for the titles. See fiddle at http://jsfiddle.net/9y4Lj4yr/ for an example.
/**
* Pie title plugin
* Last revision: 2015-5-20
*/
(function (Highcharts) {
Highcharts.wrap(Highcharts.seriesTypes.pie.prototype, 'render', function (proceed) {
var chart = this.chart,
center = this.center || (this.yAxis && this.yAxis.center),
titleOption = this.options.title,
box;
proceed.call(this);
if (center && titleOption) {
box = {
x: chart.plotLeft + center[0] - 0.5 * center[2],
y: chart.plotTop + center[1] - 0.5 * center[2],
width: center[2],
height: center[2]
};
if (!this.title) {
this.title = this.chart.renderer.label(titleOption.text)
.css(titleOption.style)
.add()
}
var labelBBox = this.title.getBBox();
if (titleOption.align == "center")
box.x -= labelBBox.width/2;
else if (titleOption.align == "right")
box.x -= labelBBox.width;
this.title.align(titleOption, null, box);
}
});
} (Highcharts));
You can use renderer which allows to add text in any place.
http://api.highcharts.com/highcharts#Renderer.text()
Improving on Vincent's answer. This is how I used it for simple Text titles.
extendHighcharts = function(){
Highcharts.wrap(Highcharts.seriesTypes.pie.prototype, 'render', function (proceed) {
//Clear the title if added previously
//if your chart data does not change, this reference storage for removal can be left out
if(this.chart.subChartTitleElement){
this.chart.subChartTitleElement[this.id].destroy();
}
proceed.call(this);
if (this.center && this.options.title) {
//first, add the title, at center or anywhere, we need the container width to center it
this.chart.subChartTitleElement[this.id] = this.chart.renderer.text(this.options.title.text,this.center[0],this.center[1]);
this.chart.subChartTitleElement[this.id].css(this.options.title.style)
this.chart.subChartTitleElement[this.id].add();
//Center the title using the container(Bounding Box = BBox) width
var xCenter = this.chart.plotLeft + this.center[0] - (this.chart.subChartTitleElement[this.id].getBBox().width/2),
yCenter = this.chart.plotTop + this.center[1] - 0.6 * this.center[2];
this.chart.subChartTitleElement[this.id].attr(
{
x:xCenter,
y:yCenter
}
);
}
});
}
USAGE
this.chart.addSeries({
type: 'pie',
name: 'pie_chart_1',
data: pieChartData,
center: ['80%','25%'],
size: '35%',
showInLegend: false,
dataLabels: {
enabled: false
},
//this part adds the relevant information
title: {
text:'Pie Chart Title',
verticalAlign: 'top',
y: -40
},
id:'a_unique_id_or_name'
});