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-rw-r--r--src/mbgl/map/map.cpp4
-rw-r--r--src/mbgl/map/transform.cpp7
-rw-r--r--src/mbgl/map/transform.hpp2
-rw-r--r--src/mbgl/map/transform_state.cpp17
-rw-r--r--src/mbgl/map/transform_state.hpp7
5 files changed, 22 insertions, 15 deletions
diff --git a/src/mbgl/map/map.cpp b/src/mbgl/map/map.cpp
index 96b8b88044..2fd575e6bf 100644
--- a/src/mbgl/map/map.cpp
+++ b/src/mbgl/map/map.cpp
@@ -615,11 +615,11 @@ void Map::resetZoom() {
#pragma mark - Bounds
-LatLngBounds Map::getLatLngBounds() const {
+optional<LatLngBounds> Map::getLatLngBounds() const {
return impl->transform.getState().getLatLngBounds();
}
-void Map::setLatLngBounds(const LatLngBounds& bounds) {
+void Map::setLatLngBounds(optional<LatLngBounds> bounds) {
impl->cameraMutated = true;
impl->transform.setLatLngBounds(bounds);
impl->onUpdate(Update::Repaint);
diff --git a/src/mbgl/map/transform.cpp b/src/mbgl/map/transform.cpp
index 9f3a2a83d2..20e29db6ac 100644
--- a/src/mbgl/map/transform.cpp
+++ b/src/mbgl/map/transform.cpp
@@ -406,10 +406,11 @@ double Transform::getZoom() const {
#pragma mark - Bounds
-void Transform::setLatLngBounds(const LatLngBounds& bounds) {
- if (bounds.valid()) {
- state.setLatLngBounds(bounds);
+void Transform::setLatLngBounds(optional<LatLngBounds> bounds) {
+ if (bounds && !bounds->valid()) {
+ throw std::runtime_error("failed to set bounds: bounds are invalid");
}
+ state.setLatLngBounds(bounds);
}
void Transform::setMinZoom(const double minZoom) {
diff --git a/src/mbgl/map/transform.hpp b/src/mbgl/map/transform.hpp
index af2f821602..749228bdf5 100644
--- a/src/mbgl/map/transform.hpp
+++ b/src/mbgl/map/transform.hpp
@@ -56,7 +56,7 @@ public:
// Bounds
- void setLatLngBounds(const LatLngBounds&);
+ void setLatLngBounds(optional<LatLngBounds>);
void setMinZoom(double);
void setMaxZoom(double);
void setMinPitch(double);
diff --git a/src/mbgl/map/transform_state.cpp b/src/mbgl/map/transform_state.cpp
index 8c3c70feec..bbf7e22b31 100644
--- a/src/mbgl/map/transform_state.cpp
+++ b/src/mbgl/map/transform_state.cpp
@@ -142,12 +142,14 @@ double TransformState::getZoomFraction() const {
#pragma mark - Bounds
-void TransformState::setLatLngBounds(const LatLngBounds& bounds_) {
- bounds = bounds_;
- setLatLngZoom(getLatLng(LatLng::Unwrapped), getZoom());
+void TransformState::setLatLngBounds(optional<LatLngBounds> bounds_) {
+ if (bounds_ != bounds) {
+ bounds = bounds_;
+ setLatLngZoom(getLatLng(LatLng::Unwrapped), getZoom());
+ }
}
-LatLngBounds TransformState::getLatLngBounds() const {
+optional<LatLngBounds> TransformState::getLatLngBounds() const {
return bounds;
}
@@ -350,8 +352,11 @@ void TransformState::moveLatLng(const LatLng& latLng, const ScreenCoordinate& an
setLatLngZoom(Projection::unproject(centerCoord + latLngCoord - anchorCoord, scale), getZoom());
}
-void TransformState::setLatLngZoom(const LatLng &latLng, double zoom) {
- const LatLng constrained = bounds.constrain(latLng);
+void TransformState::setLatLngZoom(const LatLng& latLng, double zoom) {
+ LatLng constrained = latLng;
+ if (bounds) {
+ constrained = bounds->constrain(latLng);
+ }
double newScale = zoomScale(zoom);
const double newWorldSize = newScale * util::tileSize;
diff --git a/src/mbgl/map/transform_state.hpp b/src/mbgl/map/transform_state.hpp
index d0bf455ead..e6464aeacc 100644
--- a/src/mbgl/map/transform_state.hpp
+++ b/src/mbgl/map/transform_state.hpp
@@ -4,6 +4,7 @@
#include <mbgl/util/geo.hpp>
#include <mbgl/util/geometry.hpp>
#include <mbgl/util/constants.hpp>
+#include <mbgl/util/optional.hpp>
#include <mbgl/util/projection.hpp>
#include <mbgl/util/mat4.hpp>
#include <mbgl/util/size.hpp>
@@ -50,8 +51,8 @@ public:
double getZoomFraction() const;
// Bounds
- void setLatLngBounds(const LatLngBounds&);
- LatLngBounds getLatLngBounds() const;
+ void setLatLngBounds(optional<LatLngBounds>);
+ optional<LatLngBounds> getLatLngBounds() const;
void setMinZoom(double);
double getMinZoom() const;
void setMaxZoom(double);
@@ -89,7 +90,7 @@ private:
bool rotatedNorth() const;
void constrain(double& scale, double& x, double& y) const;
- LatLngBounds bounds = LatLngBounds::world();
+ optional<LatLngBounds> bounds;
// Limit the amount of zooming possible on the map.
double min_scale = std::pow(2, 0);