endcap | Music on rails | Application Framework library
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QUESTION
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
val mapFragment = childFragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
mapFragment?.getMapAsync(this)
}
@SuppressLint("MissingPermission", "PotentialBehaviorOverride")
override fun onMapReady(googleMap: GoogleMap?) {
map = googleMap!!
map.isMyLocationEnabled = true
map.setOnMyLocationButtonClickListener(this)
map.setOnMarkerClickListener(this)
map.uiSettings.apply {
isZoomControlsEnabled = false
isZoomGesturesEnabled = false
isRotateGesturesEnabled = false
isTiltGesturesEnabled = false
isCompassEnabled = false
isScrollGesturesEnabled = false
}
observeTrackerService()
}
private fun observeTrackerService() {
TrackerService.locationList.observe(viewLifecycleOwner, {
if (it != null) {
locationList = it
if (locationList.size > 1) {
binding.stopButton.enable()
}
drawPolyline()
followPolyline()
}
})
TrackerService.started.observe(viewLifecycleOwner, {
started.value = it
})
TrackerService.startTime.observe(viewLifecycleOwner, {
startTime = it
})
TrackerService.stopTime.observe(viewLifecycleOwner, {
stopTime = it
if (stopTime != 0L) {
showBiggerPicture()
displayResults()
}
})
}
private fun drawPolyline() {
val polyline = map.addPolyline(
PolylineOptions().apply {
width(10f)
color(Color.BLUE)
jointType(JointType.ROUND)
startCap(ButtCap())
endCap(ButtCap())
addAll(locationList)
}
)
polylineList.add(polyline)
}
private fun followPolyline() {
if (locationList.isNotEmpty()) {
map.animateCamera(
(CameraUpdateFactory.newCameraPosition(
setCameraPosition(
locationList.last()
)
)), 1000, null)
}
}
}
private fun showBiggerPicture() {
val bounds = LatLngBounds.Builder()
for (location in locationList) {
bounds.include(location)
}
map.animateCamera(
CameraUpdateFactory.newLatLngBounds(
bounds.build(), 100
), 2000, null
)
addMarker(locationList.first())
addMarker(locationList.last())
}
private fun addMarker(position: LatLng){
val marker = map.addMarker(MarkerOptions().position(position))
markerList.add(marker)
}
private fun displayResults() {
val result = Result(
calculateTheDistance(locationList),
calculateElapsedTime(startTime, stopTime)
)
lifecycleScope.launch {
delay(2500)
val directions = MapsFragmentDirections.actionMapsFragmentToResultFragment(result)
findNavController().navigate(directions)
binding.startButton.apply {
hide()
enable()
}
binding.stopButton.hide()
binding.resetButton.show()
} `
...ANSWER
Answered 2021-May-23 at 17:18According to the official documentation, a Polyline is not a Firestore supported data-type. So there is no way you can add such an object to Firestore.
What's a polyline?
It's basically a list of points. So what you can do instead is to add all these points to Firestore. You can add them as simple as latitude and longitude or as GeoPoint objects. If you have additional details for the locations, you can add them as documents in a collection, otherwise, you can store them in an array within a document.
To read them, simply create a reference to the document, loop through the array, create a new LatLng object of each location, and add all of them to the polyline.
QUESTION
I am trying to show multiple sets of different polylines (each set represents one cycling route with its own start and endpoint).
There are ten routes in total I am bringing in from a JSON
file. The problem is the map
is consolidating all the individual ten routes into one mammoth polyline.
So It is sort of connecting them all together (you can just make out the very straight line connecting between each route and only one startCap
and endCap
icon).
I would expect/want to see ten different startCap
and endCap
icons and spaces between each polyline set.
So how do I make the map
show each polyline route as distinct routes?
I am using flutter_polyline_points
to decode the polyline route to the google map
.
Code below and the JSON
is on the live link to make it easy to emulate if that helps.
In essence in terms of steps :
I create the google map and have one main central marker on it.
I then bring in ten routes from a
JSON
file. These are ten objects in an array called Segments. Each object has a unique id I use for thePolyLineid
and a unique polyline set of points in a string. So I bring in theJSON
and then.iterate over each object and decode the polyline string to polyline coordinates which I attempt to then add to the map as multiple PolyLines.
Also to here is the output I am seeing to bring the issue to life.
...ANSWER
Answered 2021-Feb-16 at 11:55You have to create a list of object which contains lat long. Add polylines coordinates and markers into the list. As showing in the link.
QUESTION
I am trying to use a pre-existing table in the SQL statement at the bottom of the question rather than the data that is being generated in the SQL statement. Currently, there is some data that is generated using:
...ANSWER
Answered 2020-Nov-17 at 06:43um, the question is not 100% clear to me - ... I am not familiar with pecularities of postgresql, but my first bet would be to try
QUESTION
I am needing to parse a bunch of legacy file-based data that looks like this:
...ANSWER
Answered 2020-Aug-14 at 22:18This turned out to be the answer:
QUESTION
ANSWER
Answered 2020-Aug-26 at 12:04Use WidenPath
after defining the path:
The
WidenPath
function redefines the current path as the area that would be painted if the path were stroked using the pen currently selected into the given device context.
QUESTION
I met one question about how to retrieve a specific patch object from subplot axes. For instance, I create a subplot which contains many patches.Polygon objects(I assign each one different label) in a function. After I add this subplot to a figure by add_subplot, it seems that I lost access to those patches.Polygon objects I created inside the subplot. I know that I can get the objects by using findobj() method, however, it only returns the type of the object and its memory address. I can change the facecolor of all of the objects but what I really need is to access one specific object by name or label, such as to change the color of one patches.Ploygon instead of all of them. I appreciate it if someone knows how to achieve that. My script is attached below.
...ANSWER
Answered 2019-Dec-09 at 11:15Using the axis object and the index of your Patch, you can achieve what you want this way:
QUESTION
I'm creating an app which draws a route from users current location to the destination location entered by the user.
While using the Direction API, I am getting the data from the API but along with an error "org.json.JSONException: No value for overview_polyLine"
...ANSWER
Answered 2019-Oct-15 at 05:03Keys are case sensitive. Actual key name is overview_polyline
but not overview_polyLine
QUESTION
I've just learned that the standard Apple .round
endcap
ANSWER
Answered 2019-Oct-02 at 22:33There is no way to “subclass” the cap shape. You will have to manually construct the outline of the shape if you want a different cap shape.
The round cap is already exactly as circular as a circle created with CGPath(ellipseIn:)
.
Here's a round-capped line drawn on top of a circle of slightly larger radius, zoomed 8x:
The curvature of the line cap starts exactly at the horizontal center of the circle.
Here's the code:
QUESTION
I'm building 2D Graph structure based on Three.js and stack with an issue related to Screen-Space Projected Lines behavior during camera zoom. The issue is lines becomes significantly smaller when I zoom in and much bigger when zoom out.
Examples:
Normal line with predefined thickness:
Line after zooming out:
Line after zooming in:
All other elements which I also build in shaders (circles, rectangles for arrows) have "normal" behavior and change their sizes based on camera position linearly and in opposite direction (becomes bigger on zoom in and smaller on zoom out). I need to reach exactly same behavior with lines in shader but don't know how to do it since quite new in this area.
My lines vertex shader is a slightly adapted version of WestLangley's LineMaterial shader, you can see code below. One observation that I notice:
If I remove dir = normalize (dir) line, lines zoom behavior becomes normal but their thickness starts to be dependent on distance between nodes which is also inappropriate.
Here is VertexShader:
...ANSWER
Answered 2019-Jun-18 at 12:55Untested idea, based on your comments about the effects of the normalize()
call. Swap the order of these lines:
QUESTION
I'm currently trying to simulate the tracks of a railway using given coordinates. Previously I had been using the 'Rounded' value for the StrokeStart and StrokeEnd LineCap property, however the added radius you get with that value was causing problems when it came to adding track joints. I switched to the 'flat' value for LineCap, which works much better apart from the fact that the 'corners' of my track aren't filled in, like so:
Missing corners https://imgur.com/a/EliIlzD
I've tried to counteract this by rendering all my tracks first with the 'Round' value, and then rendering them again over the top with the 'Flat' value, which does seem to fill in the corners, but leads to other problems, such as overlapping colours when a track is occupied, and the rounded tracks I rendered first making an appearance at the end of the track:
Overlapping colours https://imgur.com/a/0XCVGv5
Problems at the end of the track https://imgur.com/a/fKju9uA
My XAML is just a simple line formed from a list of coordinates with various bindings from my view model, and converters to scale my coordinates down slightly. This is obviously the tracks rendered first with the Rounded EndCaps:
...ANSWER
Answered 2019-Jun-18 at 12:25The solution I came up with is quite specific to my project, but I thought I'd post it anyway in case it helped anyone in future who comes across this thread.
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