I have a Canvas with multiple raster images.
I use onMouseDown on Tool to find select the item which was clicked.
I have a new requirement.
Suppose, two images overlap each other, and the upper image is partially transparent. That makes the lower image visible. But when I try to click on the lower image, obviously I end up choosing the upper image.
Failed Attempt
I tried to use the getPixel(point) function on Raster. I thought if I can figure that the selected pixel is transparent, I can ignore that raster and look for other items. But I am not getting the color value that I am expecting (transparent or not) using this function.
So, my second thought was that I need to change the mousedown event point from the global co-ordinate space to local raster co-ordinate space. It still did not work.
Is there a way to achieve what I want?
Code
tool.onMouseDown = (event) => {
project.activeLayer.children.forEach((item) => {
if (item.contains(event.point)) {
// check if hit was on a transparent raster pixel
const pixel = item.getPixel(event.point)
console.error(pixel.toCSS(true))
// 2nd attempt
const pixel = item.getPixel(item.globalToLocal(event.point))
console.error(pixel.toCSS(true))
}
}
}
There is a simpler way to do what you want to achieve.
You can rely on project.hitTestAll() method to do a hit test on all items.
Then, if the hit item is a raster, hit pixel color information will be contained in hitResult.color. hitResult.color.alpha is all you need to check if a raster was hit on a non-transparent pixel.
Here is a sketch demonstration of the solution.
const dataUrl = 'data:image/png;base64,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';
const lowOpacity = 0.3;
// create 2 rasters
new Raster({
source: dataUrl,
opacity: lowOpacity,
onLoad: function() {
this.position = view.center - 100;
}
});
new Raster({
source: dataUrl,
opacity: lowOpacity,
onLoad: function() {
this.position = view.center + 100;
}
});
// on mouse down
function onMouseDown(event) {
// unselect previously selected items
paper.project.selectedItems.forEach(item => {
item.selected = false;
item.opacity = lowOpacity;
});
// do a hit test on all project items
const hitResults = project.hitTestAll(event.point);
// for each hit result
for (let i = 0; i < hitResults.length; i++) {
const hitResult = hitResults[i];
// if item was hit on a non transparent pixel
if (hitResult && hitResult.color && hitResult.color.alpha > 0) {
// select item
hitResult.item.selected = true;
hitResult.item.opacity = 1;
// break loop
break;
}
}
}
Related
I have simple code but can't get how to make it works.. The idea is to press the "Delete" button to change "area" value to "0" in each feature made in GeoJson. Code below works, (but automatically, without the button), and it is clear for me:
function onEachFeature(feature, layer) {
feature.properties.area = 'x';
};
But when I want start changing values using the button (I put function inside OnEachFeature) the operation works only for the last feature in geoJson file..
function onEachFeature(feature, layer) {
function foo(){
feature.properties.area = 'x';
}
document.getElementById('delete').onclick = foo;
};
My question is how to make it works for each feature (Press the button -> Change area value ) ?
I will be very grateful for your answers !
Below link for GeoJson file:
https://api.npoint.io/2ba17bdbb50601803cd0
You can use getLayers to get all the features and then change their area property:
var geojson = L.geoJSON(data, {
onEachFeature: onEachFeature
}).addTo(map);
function deleteArea() {
var layers = geojson.getLayers();
for (var i = 0; i < layers.length; i++) {
layers[i].feature.properties.area = 0;
}
}
document.getElementById('delete').onclick = deleteArea;
I'm working on my WordPress website with Visual Composer.
I need to include a pageable container but it would be great if it can be like a slideshow.
This is my pageable container
Thanks in advance,
Regards :)
Based upon the current version of WP Bakery Page Builder the below works for me:
To build it I created a row with 3 columns, with the pageable container in the middle column and the left and right arrow images in the columns on either side.
Both arrow images and the pageable container were given IDs. In my example the IDs of the arrows were #arrow_prev and #arrow_next respectively. You can give your pageable container any unique ID.
(function ($) {
$(document).ready(function(){
$( '#arrow_prev' ).click( function( e ) {
var pageable_container = $(this).closest(".vc_row").find(".vc_tta-panels-container");
move_pageable_container(pageable_container,'prev');
});
$( '#arrow_next' ).click( function( e ) {
var pageable_container = $(this).closest(".vc_row").find(".vc_tta-panels-container");
move_pageable_container(pageable_container,'next');
});
function move_pageable_container(pageable_container,direction){
// Make a list of the panel IDs
var panel_ids = $(pageable_container.find(".vc_tta-panel"))
.map(function() { return this.id; }) // convert to set of IDs
.get();
// Find position of the active panel in list
var current_active_pos = panel_ids.indexOf($(pageable_container).find(".vc_tta-panel.vc_active").attr('id'));
var new_pos = 0;
switch(direction) {
case 'prev':
if (current_active_pos > 0){
new_pos = current_active_pos-1;
}else{
new_pos = panel_ids.length-1;
}
break;
case 'next':
if (current_active_pos < panel_ids.length-1){
new_pos = current_active_pos+1;
}else{
new_pos = 0;
}
break;
}
// Clear active panels
$(pageable_container.find(".vc_tta-panel")).each(function(i,a) {
$(this).removeClass("vc_active");
});
var new_active_panel = $(pageable_container).find('#'+ panel_ids[new_pos]);
$(new_active_panel).addClass("vc_animating");
$(new_active_panel).addClass("vc_active");
setTimeout(
function(){
$(new_active_panel).removeClass("vc_animating");
}, 350);
}
}
);
})(jQuery);
If you want a pseudo fading-in effect then you can use this additional CSS in your style sheet:
#id_of_pageable_container .vc_tta-panel.vc_animating {
opacity: 0!important;
}
Where #id_of_pageable_container is the ID that you gave your pageable container
A simpler solution with vanilla js only:
The idea is to find the target page button and press it programmatically, so that there is no need to mimic the plugin's animations as in Chaz's solution.
Add js (via Raw JS widget / other means):
function prevSlide () {
const slides = document.getElementsByClassName('vc_pagination-item');
for (let i = 0; i < slides.length; i++) {
if (slides[i].className.includes('vc_active')) {
if (i - 1 < 0) return;
slides[i - 1].firstChild.click();
return;
}
}
}
function nextSlide () {
const slides = document.getElementsByClassName('vc_pagination-item');
for (let i = 0; i < slides.length; i++) {
if (slides[i].className.includes('vc_active')) {
if (i + 1 >= slides.length) return;
slides[i + 1].firstChild.click();
return;
}
}
}
Add button widgets and set href to call js:
For left arrow button,
javascript:prevSlide();
For right arrow button,
javascript:nextSlide();
Hope this helps.
I prefer to use the Post Grid widget for that. Keep in mind that the pageable container is not totally responsive, it doesn't react to swipe touching, but the Post Grid does.
Post Grid is really powerful, although it also has its caveouts. You can create your content with posts and pages, or a custom post type and then filter what you want to show in your slider from the widget options.
In "advanced mode" you can use the Grid Builder to create your own template and control the output.
The only problems that I've found with this method is to set a variable height in sliders and that sometimes it is slow loading content and is not possible to do a lazyload.
I generated a map with Here maps JS Api 3.0. I want to restrict the zoom to a min/max value and the panning to a given rectangle. Is there a way to do that?
for example:
map.setMinZoom(4);
map.setMaxZoom(14);
map.setPanRestriction(rectangle);
I am guessing you're trying to restrict the viewport to where you now have you image overlay...
The easiest way is to listen to view model and and viewport updates similar the other example:
Custom map overlay heremaps js api v3
Now you can look at the map's center coordinate and see if it is within the boundaries you wish to display. If not, set it to within the boundaries. Something along those lines may work for you:
var bounds = new H.geo.Rect(45, -45, -45, 45);
map.getViewModel().addEventListener('sync', function() {
var center = map.getCenter(),
adjustLat,
adjustLng;
if (!bounds.containsPoint(center)) {
if (center.lat > bounds.getTop()) {
adjustLat = bounds.getTop();
} else if (center.lat < bounds.getBottom()) {
adjustLat = bounds.getBottom();
} else {
adjustLat = center.lat;
}
if (center.lng < bounds.getLeft()) {
adjustLng = bounds.getLeft();
} else if (center.lng > bounds.getRight()) {
adjustLng = bounds.getRight();
} else {
adjustLng = center.lng;
}
map.setCenter({
lat: adjustLat,
lng: adjustLng
});
}
});
//Debug code to visualize where your restriction is
map.addObject(new H.map.Rect(bounds));
I would like to have every template pulse every time it is rendered. To have a visual debugging tool to see what is being rendered. So I imagine something like that when a template (a small segment) is rendered, its background color is set to red and then this red color slowly fades into original background color or whatever the background was (even if it was transparent). So if I see that something is all the time red, I know that it is being redrawn all the time.
Based on the code from #Hubert OG and an idea from this blog post, I made the following debugging code for Meteor rendering:
pulseNode = (i, node) ->
return unless node.style
$node = $(node)
prePulseCss = $node.data('prePulseCss') ? node.style.cssText
prePulseBackgroundColor = $node.data('prePulseBackgroundColor') ? $node.css('backgroundColor')
$node.data(
'prePulseCss': prePulseCss
'prePulseBackgroundColor': prePulseBackgroundColor
).css('backgroundColor', 'rgba(255,0,0,0.5)').stop('pulseQueue', true).animate(
backgroundColor: prePulseBackgroundColor
,
duration: 'slow'
queue: 'pulseQueue'
done: (animation, jumpedToEnd) ->
node.style.cssText = prePulseCss
).dequeue 'pulseQueue'
pulse = (template) ->
$(template.firstNode).nextUntil(template.lastNode).addBack().add(template.lastNode).each pulseNode
_.each Template, (template, name) ->
oldRendered = template.rendered
counter = 0
template.rendered = (args...) ->
console.debug name, "render count: #{ ++counter }"
oldRendered.apply #, args if oldRendered
pulse #
Here's a simple blink. Animating background color requires additional libraries, see jQuery animate backgroundColor .
var pulseNode = function(node) {
if(!node.style) return;
var prev = node.style['background-color'] || 'rgba(255,0,0,0)';
$(node).css('background-color', 'red');
setTimeout(function() {
$(node).css('background-color', prev);
}, 1000);
};
pulse = function(template) {
for(var node = template.firstNode; true; node = node.nextSibling) {
pulseNode(node);
if(node === template.lastNode) return;
}
}
Now, for each template you want to use this, do
Template.asdf.rendered = function() {
pulse(this);
}
I need to select multiple markers in a map. Something like this: Box/Rectangle Draw Selection in Google Maps but with Leaflet and OSM.
I think it could be done by modifying the zoom box that appears when you shift click and drag in an OSM map, but I don't know how to do it.
Edit:
I rewrote the _onMouseUp function, as L. Sanna suggested and ended up with something like this:
_onMouseUp: function (e) {
this._finish();
var map = this._map,
layerPoint = map.mouseEventToLayerPoint(e);
if (this._startLayerPoint.equals(layerPoint)) { return; }
var bounds = new L.LatLngBounds(
map.layerPointToLatLng(this._startLayerPoint),
map.layerPointToLatLng(layerPoint));
var t=0;
var selected = new Array();
for (var i = 0; i < addressPoints.length; i++) {
var a = addressPoints[i];
pt = new L.LatLng(a[0], a[1]);
if (bounds.contains(pt) == true) {
selected[t] = a[2];
t++;
}
}
alert(selected.join('\n'))
},
I think it could be easy modificating the zoom box that appears when
you shift clic and drag in an osm map, but I don't know how to do it
Good idea. The zoom Box is actually a functionality of leaflet.
Here is the code.
Just rewrite the _onMouseUp function to fit your needs.
Have you tried something like this?
markers is an array of L.latLng() coordinates
map.on("boxzoomend", function(e) {
for (var i = 0; i < markers.length; i++) {
if (e.boxZoomBounds.contains(markers[i].getLatLng())) {
console.log(markers[i]);
}
}
});
Not enough points to comment, but in order to override the _onMouseUp function like OP posted in their edit, the leaflet tutorial gives a good explanation. Additionally, this post was very helpful and walks you through every step.
A bit late to the party but it's also possible to achieve this using the leaflet-editable plugin.
// start drawing a rectangle
function startSelection() {
const rect = new L.Draw.Rectangle(this.map);
rect.enable();
this.map.on('draw:created', (e) => {
// the rectangle will not be added to the map unless you
// explicitly add it as a layer
// get the bounds of the rect and check if your points
// are contained in it
});
}
Benefits of using this method
Allow selection with any shape (polygon, circle, path, etc.)
Allow selection using a button/programmatically (does not require holding down the shift key, which may be unknown to some users).
Does not change the zoom box functionality