Support configurable pick tolerance

celestiamobile · Oct 10, 2020 · d2bcb62 · d2bcb62
1 parent 12db304
commit d2bcb62
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Showing 2 changed files with 15 additions and 1 deletion.
diff --git a/src/celestia/celestiacore.cpp b/src/celestia/celestiacore.cpp
@@ -394,7 +394,7 @@ void CelestiaCore::mouseButtonUp(float x, float y, int button)
     setViewChanged();
 
     // Four pixel tolerance for picking
-    float pickTolerance = sim->getActiveObserver()->getFOV() / height * 4.0f;
+    float pickTolerance = sim->getActiveObserver()->getFOV() / height * this->pickTolerance;
 
     if (resizeSplit != nullptr)
     {
@@ -2181,6 +2181,16 @@ void CelestiaCore::setSafeAreaInsets(int left, int top, int right, int bottom)
     safeAreaInsets = { left, top, right, bottom };
 }
 
+float CelestiaCore::getPickTolerance() const
+{
+    return pickTolerance;
+}
+
+void CelestiaCore::setPickTolerance(float newPickTolerance)
+{
+    pickTolerance = newPickTolerance;
+}
+
 // Return true if anything changed that requires re-rendering. Otherwise, we
 // can skip rendering, keep the GPU idle, and save power.
 bool CelestiaCore::viewUpdateRequired() const

diff --git a/src/celestia/celestiacore.h b/src/celestia/celestiacore.h
@@ -286,6 +286,8 @@ class CelestiaCore // : public Watchable<CelestiaCore>
     int getDistanceToScreen() const;
     void setDistanceToScreen(int);
     void setSafeAreaInsets(int left, int top, int right, int bottom);
+    float getPickTolerance() const;
+    void setPickTolerance(float);
 
     void setFOVFromZoom();
     void setZoomFromFOV();
@@ -467,6 +469,8 @@ class CelestiaCore // : public Watchable<CelestiaCore>
     int screenDpi{ 96 };
     int distanceToScreen{ 400 };
 
+    float pickTolerance { 4.0f };
+
     unique_ptr<ViewportEffect> viewportEffect { nullptr };
     bool isViewportEffectUsed { false };