MSVC implementation of std::promise is buggy and only works with types
that can be default-constructed. To avoid a compilation failure in the
instantiation of ask() inside MapSnapshotter::getRegion(), which creates
a std::promise<LanLngBounds>, make LatLngBounds' default constructor
public.
The output of Layer::getProperty is a mapbox::base::Value which is
equivalent to JSON. When setting the value of an enum property via JSON
its value would be a string, so it would be natural to return a string
too.
Also, the numbers generated depend on the enum definition. They are not
part of the style spec.
Patch partly fixes#15163 in a way that it doesn't allow loading tens of thousands of tiles and attempt to show area above horizon:
Limit pitch based on edge insets. It is not too bad - current limit of 60 degrees stays active until center of perspective is moved towards the bottom, to 84% of screen height. The plan is to split removal of 60 degrees limit to follow up patch.
Fix max Z calculation in getProjMatrix. TransformState::getProjMatrix calculation of farZ was complex with possibility to lead to negative z values. Replacing it with simpler, precise calculation:
furthestDistance = cameraToCenterDistance / (1 - tanFovAboveCenter * std::tan(getPitch()));
TransformState::getProjMatrix calculation of farZ was an aproximation. Replacing it with simpler, but precise calculation.
Related to: #15163
The change is implemented in TransformState::getProjMatrix, the rest of the code is making sure that existing API contracts stay and there are tests verifyingrendering and render query processing only items within screen and given tolerance around screen edges.
MapView: don't bake edge insets into relalculated camera center. Keep edge insets as property of camera in TransformState (similar to pitch, zoom, bearing) independent from specified camera center. Interpolate edge insets in animation.
iOS Demo app: "Turn On/Off Content Insets" pitch the camera and navigate to convenient location in Denver, where streets are parallel to cardinal directions, to illustrate viewport center offset when edge insets are set.
Tests:
ViewFrustumCulling: although Annotations are deprecated, queryRenderedFeatures related tests in Annotations would need to get ported and decided to add the edge insets related query tests next to them. Verify frustum culling (render+queryRenderedFeatures) With different camera and edge insets setups. TODO: port Annotations tests.
Transform.Padding: Verify that coordinates take proper place on screen after applying edge insets.
LocalGlyphRasterizer: verify text rendering when applying padding.
Related to #11882: both use projection matrix elements [8] and [9].
Alternative approach to this was to increase and offset map origin so that the screen would be a sub-rectangle in larger map viewport. This approach has a drawback of unecessary processing the items that are outside screen area.
Fixes#12107, #12728, navigation-sdks/issues/120
Refactor out HeadlessFrontend and HeadlessBackend gl independent code to gfx.
Define gl::HeadlessBackend as subclass, instantiated by gfx::HeadlessBackend static factory method.
GL dependent tests are still using gl::HeadlessBackend directly (not through gfx).
- Do not carry it over everywhere as parameter, it is a shared
instance anyway and the lifecycle is pretty much the app lifecycle
from the moment we instantiate a map.
- Rename to BackgroundScheduler because it is a Scheduler that will
do tasks in the background, we don't make assumptions if it is a
thread pool or a single thread.
- Most importantly, remove the dependency from `core` on `platform`.
Group bounds, minimum and maximum zoom related methods together using
the new BoundOptions.
v2: Document that getBounds() initializes all optional fields.
- Add test for getBounds() on a map with default values.
This is a first step into grouping together bounds related Map methods
into one that takes a "BoundOptions" object. LatLngBounds::unbounded()
replaces an undefined optional<LatLngBounds>.
v2: Document LatLngBounds::unbounded()
Support for limiting pitch was introduced in commit c4fc89977b ([core]
Added {set,get}{Min,Max}Pitch) in 2017 but was never exposed by the
platform SDKs. Simplify the Map interface by removing this unused
feature.
v2: Add util::PITCH_MIN
Instead of having individual APIs for setting axonometric
and skew options, create ProjectionMode struct that holds
all the relevant options for Axonometric rendering and
introduce setter/getter on the Map for those options.
When we load a stale style from cache, and the user immediately starts mutating it, we should continue loading the style so that we'll get a fresh copy of the data into our cache and avoid perpetually showing the stale style.
