/// <summary>
/// Wrapper for the concrete modifier action, used for error handling and preconditions checking.
/// </summary>
/// <param name="concreteBehavior"> External method to execute </param>
/// <param name="policy"> The update policy to employ </param>
/// <param name="preconditions"> Predicates to check before executing the action </param>
protected void ApplyModifier(Action concreteBehavior, IRenderingPolicy policy, params Func<bool>[] preconditions)
{
try
{
if (HasLessThanTwoLayers()) return;
if (BreaksPreconditions(preconditions)) return;
concreteBehavior();
HandlerGraphics.UpdateFrame(HandlerLayers.WorkspaceLayers, policy);
}
catch (Exception ex)
{
Logger.Warn(ex.ToString());
}
}
public void RefreshFrame(IRenderingPolicy renderPolicy)
{
formGraphics.DrawImageUnscaledAndClipped(frame, renderPolicy.DirtyRegion);
}
public void UpdateFrame(SortedContainer<Layer> objectCollection,
IRenderingPolicy renderPolicy)
{
// Clip the invalidated region to the size of the frame
renderPolicy.ClipToFrame(frame.Size);
// Refreh the invalidated frame/region
profiler.ProfileClearFrame(() =>
{
Color clearColor = Color.FromArgb(255, surfaceInfo.GraphicsBackground);
using (SolidBrush clearBrush = new SolidBrush(clearColor))
{
/*var localPolicy = renderPolicy as MinimalUpdate;
if (localPolicy != null && localPolicy.OldRegion != default(Rectangle))
{
_frameGraphics.FillRectangle(clearBrush, localPolicy.OldRegion);
}*/
frameGraphics.FillRectangle(clearBrush, renderPolicy.DirtyRegion);
}
});
profiler.ProfileRasterizeObjects(() =>
{
using (var frameInfo = new BitmapHelper(frame)) // lock framebuffer data
using (var rasterizer = new RasterizerStage(objectCollection, surfaceInfo)) // rasterize all scene objects
using (var compositor = new CompositionStage(objectCollection, rasterizer))
{
// perform scene composition on needed regions
compositor.Composite(renderPolicy, frameInfo);
}
});
// Draw the new completed frame/region on the visible area
profiler.ProfileDrawFrame(() =>
{
RefreshFrame(renderPolicy);
});
// Notify interested clients with statistics after frame update
if (graphicsUpdateCallback != null) graphicsUpdateCallback.BeginInvoke(profiler, null, null);
}
