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Issue #17 Restore aircraft labels with math and logic cribbed from LiveTraffic's XPMP2

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This commit is contained in:
Mat Sutcliffe
2020-08-12 20:09:23 +01:00
parent c615b45e78
commit 19d88d1740
6 changed files with 134 additions and 16 deletions
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10
src/xswiftbus/drawable.h
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@@ -28,15 +28,20 @@ namespace XSwiftBus
//! Destructor.
virtual ~CDrawable() { hide(); }
//! Is currently shown.
bool isVisible() const { return m_visible; }
//! Register the draw callback.
void show()
{
m_visible = true;
XPLMRegisterDrawCallback(callback, m_phase, m_before, static_cast<void*>(this));
}
//! Unregister the draw callback.
void hide()
{
m_visible = false;
XPLMUnregisterDrawCallback(callback, m_phase, m_before, static_cast<void*>(this));
}
@@ -51,8 +56,9 @@ namespace XSwiftBus
return 1;
}
const XPLMDrawingPhase m_phase;
const bool m_before;
XPLMDrawingPhase m_phase;
bool m_before = false;
bool m_visible = false;
};
}