private unsafe int XPLMDrawHook(XPDrawingPhase inPhase, int inIsBefore, void *inRefcon)
{
try
{
var ret = m_loopDelegate(inPhase, inIsBefore);
return(ret);
}
catch (Exception exc)
{
PluginBridge.Log.Log(exc);
return(1); // If an exception happens in the draw hook, then let X-Plane draw
}
}
public unsafe XPDrawingLoopHook(DrawDelegate drawCallbackDelegate, XPDrawingPhase inPhase, int inWantsBefore)
{
m_loopDelegate = drawCallbackDelegate;
m_inPhase = inPhase;
m_inWantsBefore = inWantsBefore;
m_hookDelegate = new XPLMDrawCallback_f(XPLMDrawHook);
var res = PluginBridge.ApiFunctions.XPLMRegisterDrawCallback(m_hookDelegate, m_inPhase, m_inWantsBefore, null);
if (res == 0)
{
throw new ArgumentException($"Phase {m_inPhase} does not exist in this version of X-Plane");
}
else if (res > 1)
{
throw new Exception($"Unexpected return value {res}.");
}
}
/// <summary>
/// This hook is called for drawing an object. Be aware that this
/// is a deprecated way of drawing, but we still support it as long
/// as the SDK supports it.
/// </summary>
private int DrawingHook(XPDrawingPhase inPhase, int inIsBefore)
{
m_api.Log.Log("GraphicsTestPlugin: Entering drawing hook");
var(x, y, z) = m_api.Graphics.WorldToLocal(47.439444, 19.261944, 0);
var res = m_probe.ProbeTerrainXYZ((float)x, 0, (float)z);
m_api.Log.Log($"Probed terrain, got result {res.LocationY} with code {res.Result}");
var(lat, lon, alt) = m_api.Graphics.LocalToWorld(res.LocationX, res.LocationY, res.LocationZ);
var positions = Enumerable
.Range(0, 10)
.Select(i => new XPDrawInfo(res.LocationX, res.LocationY + i * 10, res.LocationZ, 0.0f, 0.0f, 0.0f))
.ToArray();
m_testTug.Draw(0, 0, positions);
m_api.Log.Log("GraphicsTestPlugin: Leaving drawing hook");
return(1);
}
public IXPDrawingLoopHook RegisterDrawHook(DrawDelegate drawDelegate, XPDrawingPhase inPhase, int inWantsBefore)
{
return(new XPDrawingLoopHook(drawDelegate, inPhase, inWantsBefore));
}
