google_maps_flutter, how not to start image from bottom?
By default, the marker appears directly above the coordinates,(LatLng) so it seems like Google has made it this way, but I am currently making a custom marker and I want this position to be in the center, not directly above the coordinates. It's probably related to the render object key, but I want to edit it myself. On which page can I edit it?
Does anybody knows this issue??
(If that coordinate is a point. Make sure the dot is in the middle of the marker, not the bottom of the marker.)
I think this is the similar issue
How to center the camera so that marker is at the bottom of screen? (Google map api V2 Android)
Related
Fairly new to Mapbox and getting there (slowly).
I have a map initially loaded at zoom level 1 for use in a web browser. When a user clicks on a marker, it'll center and zoom to level 10.
When that marker loses focus, I'd like to zoom back out to level 1.
This page discussing web applications does it (link below), but there doesn't seem to be (that I can find - sorry!) any documentation on how to achieve this.
https://docs.mapbox.com/help/getting-started/web-apps/
Any and all help appreciated!
For the first event, to zoom in when clicking a marker, you could adapt this example to zoom in addition to panning when calling flyTo
https://docs.mapbox.com/mapbox-gl-js/example/center-on-feature/
For the second part, you'd need to add a listener for another event depending on what you have in mind by "losing focus".
https://docs.mapbox.com/mapbox-gl-js/api/map/#map-events
I'm trying to migrate my app from Bing maps to Azure maps.
I'm adding a few custom pushpins on my map using the SymbolLayer.
When I try to zoom in or out though, my pushpins are getting displaced while my map stays static. What might be the issue?
I suspect the issue is that your anchor point of your icon does not align with the point on the icon image you want. You can adjust this in a couple of ways.
Use the icon options anchor setting. Good for most standard icon images.
Use the icon options offset setting. Good for fine tuning.
For example, if the point on your image that you want to "anchor" to the coordinates on the map is the bottom left corner of the image, you could do the following:
var layer = new atlas.layer.SymbolLayer(datasource, null, {
iconOptions: {
anchor: 'bottom-left'
}
});
Here is a sample to experiment with: https://azuremapscodesamples.azurewebsites.net/?sample=Symbol%20Layer%20Options
Here are the docs on the icon options for a symbol layer: https://learn.microsoft.com/en-us/javascript/api/azure-maps-control/atlas.iconoptions?view=azure-maps-typescript-latest
UPD: Done. Look at this beautiful polygon.
UPD: In Flutter / openstreetmap, I want to let users draw a polygon by tapping a map and/or clicking a button. The polygon should be not filled. I need a very simple example just to get an idea of how it works.
The final task is:
I am making a flutter application that should give the user the ability to get information about markers located within a certain area on the map. I use osm. By pressing the button, the user initiates the construction of an arbitrary polygon, each corner of which is formed at the place of the next pressing of the button. When the construction of the polygon is completed, the objects inside the polygon are shown, the rest are hidden or not built. After that, the cycle ends by clearing the map.
I haven't found any solution for osm. I would appreciate any help. I don't have any code yet)
You can use the flutter_map library, I'm sure you can understand the documentation and how to set it up.
Then use PolygonLayerOptions(polygons: [Polygon(points: polygonList)]) as a layer on top of the OSM layer. Then set up the list polygonList and use the FlutterMap()'s onTap callback to get the position at which the user tapped and add the LatLng to the polygonList list. There are multiple other configuration options within the Polygon() constructor, and those can be found through IntelliSense or similar. To have no fill, just set the color to transparent.
I use this method (or a very similar one) for my app which lets users download areas of map. The user taps the top left and bottom right of a rectangular area they want to download, by code calculates the top right and bottom left, and a polygon is drawn to show the user exactly where they tapped. Make sure to use setState() or similar.
I'm quite new to Unity, so I'm sorry if this is a basic question. I've been trying to set up the UI for a mobile game, but I'm not quite sure how to make the UI lock it's position, no matter the screen size. I've tried using anchors (though I don't fully understand how to use them properly), I've tried using a canvas scaler, I've looked at the Unity document and I just can't seem to find an answer. The buttons are off screen/half off the screen when I build the game to my device/switch screen sizes in the game view. Does anyone know how to fix this?
You can set your anchor point by selecting the UI object (such as a button) and then clicking here and selecting the right anchor point. You can also press down shift to set the pivot and/or alt to move the object to that point at the same time. The object should now be anchored to that point and keep its position even if the resolution is changed. You can set a precise position from the inspector, too. Simply adjust the Pos X and Pos Y variables. It will still adhere to the anchor point.
Note that you might have to play around with the Canvas object's UI Scale mode and its settings to get the right setup.
Am working on a project where we have a Bing map being resized depending on whether or not a panel is shown/hidden on the left-hand side of the map. Because of this, and Microsoft's terms preventing overlaying anything over the logo/copyright, etc, I'm using the VEMap.resize method to resize the map, and then am moving the panel out of the way. The issue is that there's an awkward autopan that occurs as part of the resize - because we're declaring a center point to determine the resize, the map pans to include this point in the center without any control over it. Without declaring a center, the map doesn't pan, but it also doesn't pull the new data (map tiles) in our resize in either, resulting in an awkward grey bar on the right-hand side..
Is there a simple way to either resize the map and disable that autopan, moving the center prior to the panning, or to force the map tiles to be rendered upon the resize itself? Any help would be appreciated.
You may want to try the new version 7.0 as you could get rid of this annoyance by using "map.setView({center: map.getCenter(), animate:false})" after resizing; that should override the nice but annoying pan movement on resize.
However there are a few features (like infoboxes or client-side clustering) currently missing in 7.0 when migrating from 6.3 however and the classnames changed, so you may want to wait for now, however it would be the good moment to prepare yourself for 7.