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author | Asheem Mamoowala <asheem.mamoowala@mapbox.com> | 2017-10-02 13:42:26 -0700 |
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committer | Asheem Mamoowala <asheem.mamoowala@mapbox.com> | 2017-10-09 13:58:11 -0700 |
commit | df20b0cbecb25b8bc6812c4a558fc0f0e6cfb7ed (patch) | |
tree | 82ce36b376894b4416c7df05f2d899a8a69bb8e0 /src | |
parent | 9048d6cfd0f794af3f3810a880adb0d2fc691552 (diff) | |
download | qtlocation-mapboxgl-df20b0cbecb25b8bc6812c4a558fc0f0e6cfb7ed.tar.gz |
[core] Add `cameraForLatLngs()` method with modified bearing
Diffstat (limited to 'src')
-rw-r--r-- | src/mbgl/map/map.cpp | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/src/mbgl/map/map.cpp b/src/mbgl/map/map.cpp index 7534fe67ad..6eb555ad1e 100644 --- a/src/mbgl/map/map.cpp +++ b/src/mbgl/map/map.cpp @@ -364,27 +364,27 @@ void Map::setLatLngZoom(const LatLng& latLng, double zoom, const EdgeInsets& pad impl->onUpdate(); } -CameraOptions Map::cameraForLatLngBounds(const LatLngBounds& bounds, const EdgeInsets& padding) const { +CameraOptions Map::cameraForLatLngBounds(const LatLngBounds& bounds, const EdgeInsets& padding, optional<double> bearing) const { return cameraForLatLngs({ bounds.northwest(), bounds.southwest(), bounds.southeast(), bounds.northeast(), - }, padding); + }, padding, bearing); } -CameraOptions Map::cameraForLatLngs(const std::vector<LatLng>& latLngs, const EdgeInsets& padding) const { +CameraOptions cameraForLatLngs(const std::vector<LatLng>& latLngs, const Transform& transform, const EdgeInsets& padding) { CameraOptions options; if (latLngs.empty()) { return options; } - + Size size = transform.getState().getSize(); // Calculate the bounds of the possibly rotated shape with respect to the viewport. ScreenCoordinate nePixel = {-INFINITY, -INFINITY}; ScreenCoordinate swPixel = {INFINITY, INFINITY}; - double viewportHeight = getSize().height; + double viewportHeight = size.height; for (LatLng latLng : latLngs) { - ScreenCoordinate pixel = impl->transform.latLngToScreenCoordinate(latLng); + ScreenCoordinate pixel = transform.latLngToScreenCoordinate(latLng); swPixel.x = std::min(swPixel.x, pixel.x); nePixel.x = std::max(nePixel.x, pixel.x); swPixel.y = std::min(swPixel.y, viewportHeight - pixel.y); @@ -396,14 +396,14 @@ CameraOptions Map::cameraForLatLngs(const std::vector<LatLng>& latLngs, const Ed // Calculate the zoom level. double minScale = INFINITY; if (width > 0 || height > 0) { - double scaleX = double(getSize().width) / width; - double scaleY = double(getSize().height) / height; + double scaleX = double(size.width) / width; + double scaleY = double(size.height) / height; scaleX -= (padding.left() + padding.right()) / width; scaleY -= (padding.top() + padding.bottom()) / height; minScale = util::min(scaleX, scaleY); } - double zoom = getZoom() + util::log2(minScale); - zoom = util::clamp(zoom, getMinZoom(), getMaxZoom()); + double zoom = transform.getZoom() + util::log2(minScale); + zoom = util::clamp(zoom, transform.getState().getMinZoom(), transform.getState().getMaxZoom()); // Calculate the center point of a virtual bounds that is extended in all directions by padding. ScreenCoordinate centerPixel = nePixel + swPixel; @@ -421,11 +421,34 @@ CameraOptions Map::cameraForLatLngs(const std::vector<LatLng>& latLngs, const Ed // CameraOptions origin is at the top-left corner. centerPixel.y = viewportHeight - centerPixel.y; - options.center = latLngForPixel(centerPixel); + options.center = transform.screenCoordinateToLatLng(centerPixel); options.zoom = zoom; return options; } +CameraOptions Map::cameraForLatLngs(const std::vector<LatLng>& latLngs, const EdgeInsets& padding, optional<double> bearing) const { + if(bearing) { + double angle = -*bearing * util::DEG2RAD; // Convert to radians + Transform transform(impl->transform.getState()); + transform.setAngle(angle); + CameraOptions options = mbgl::cameraForLatLngs(latLngs, transform, padding); + options.angle = angle; + return options; + } else { + return mbgl::cameraForLatLngs(latLngs, impl->transform, padding); + } +} + +CameraOptions Map::cameraForGeometry(const Geometry<double>& geometry, const EdgeInsets& padding, optional<double> bearing) const { + + std::vector<LatLng> latLngs; + forEachPoint(geometry, [&](const Point<double>& pt) { + latLngs.push_back({ pt.y, pt.x }); + }); + return cameraForLatLngs(latLngs, padding, bearing); + +} + LatLngBounds Map::latLngBoundsForCamera(const CameraOptions& camera) const { Transform shallow { impl->transform.getState() }; Size size = shallow.getState().getSize(); |