void RenderGeometry()
{
var ellipse = new Ellipse(new Vector2(100, 100), 3, 3);
d2dDeviceContext.FillEllipse(ellipse, VertexFillBrush);
d2dDeviceContext.DrawEllipse(ellipse, VertexDrawBrush, 0.5f);
}
public bool SendFrame(TimeSpan elapsedTime, int frameIndex)
{
var a = Math.PI * elapsedTime.TotalSeconds;
var h = VideoFrameHeight - _ballEllipse.RadiusY;
var y = (float)(VideoFrameHeight - Math.Abs(Math.Sin(a) * h));
var pos = new RawVector2(VideoFrameWidth * 0.5f, y);
using (var df = TakeNextFrameForSending())
{
if (!df.TryGetFrame(out FrameD3D11 frame))
{
return(false);
}
// TODO: Draw bouncing ball.
_context2D.Target = frame.Bitmap;
_context2D.BeginDraw();
_context2D.Transform = Matrix3x2.Identity;
_context2D.DrawBitmap(_backgroundBitmap, new RawRectangleF(0, 0, VideoFrameWidth, VideoFrameHeight),
1, D2D1.BitmapInterpolationMode.NearestNeighbor);
_context2D.Transform = BallPosition.HasValue
? Matrix3x2.Translation(BallPosition.Value * new Vector2(VideoFrameWidth, VideoFrameHeight))
: Matrix3x2.Translation(pos);
_context2D.FillEllipse(_ballEllipse, _ballBrush);
_context2D.EndDraw();
_context2D.Target = null;
return(true);
}
}
/// <summary>
/// Run our application until the user quits.
/// </summary>
public void Run()
{
// Make window active and hide mouse cursor.
window.PointerCursor = null;
window.Activate();
// Infinite loop to prevent the application from exiting.
while (true)
{
// Dispatch all pending events in the queue.
window.Dispatcher.ProcessEvents(CoreProcessEventsOption.ProcessAllIfPresent);
// Quit if the users presses Escape key.
if (window.GetAsyncKeyState(VirtualKey.Escape) == CoreVirtualKeyStates.Down)
{
return;
}
// Set the Direct2D drawing target.
d2dContext.Target = d2dTarget;
// Clear the target and draw some geometry with the brushes we created.
d2dContext.BeginDraw();
d2dContext.Clear(Color.CornflowerBlue);
d2dContext.FillRectangle(new RectangleF(50, 50, 450, 150), solidBrush);
d2dContext.FillRoundedRectangle(new RoundedRectangle()
{
Rect = new RectangleF(50, 250, 450, 150),
RadiusX = 10,
RadiusY = 10
}, linearGradientBrush);
d2dContext.FillEllipse(new Ellipse(new Vector2(250, 525), 100, 100), radialGradientBrush);
d2dContext.EndDraw();
// Present the current buffer to the screen.
swapChain.Present(1, PresentFlags.None);
}
}
public bool SendFrame(TimeSpan elapsedTime)
{
using (var df = TakeNextFrameForSending())
{
if (!df.TryGetFrame(out BitmapFrameD2D1 frame))
{
return(false);
}
_context2D.Target = frame.Bitmap;
_context2D.BeginDraw();
_context2D.Transform = Matrix3x2.Identity;
_context2D.DrawBitmap(_backgroundBitmap, new RawRectangleF(0, 0, VideoFrameWidth, VideoFrameHeight),
1, D2D1.BitmapInterpolationMode.NearestNeighbor);
// Draw many balls to simulate high motion
for (int i = 0; i < BallCount; ++i)
{
var a = 2 * Math.PI * elapsedTime.TotalSeconds + i * Math.PI / BallCount;
var h = VideoFrameHeight - _ballEllipse.RadiusY;
var s = (float)VideoFrameWidth / (BallCount + 1);
var y = (float)(VideoFrameHeight - Math.Abs(Math.Sin(a) * h));
var pos = new RawVector2((i + 1) * s, y); // - _ballEllipse.RadiusX, y);
_context2D.Transform = MousePosition.HasValue
? Matrix3x2.Translation(MousePosition.Value * new Vector2(VideoFrameWidth, VideoFrameHeight))
: Matrix3x2.Translation(pos);
_context2D.FillEllipse(_ballEllipse, _ballBrush);
}
if (_rulerOptions != null)
{
_context2D.Transform = Matrix3x2.Identity;
// Draw the time markers and current time to measure latency
int markerCount = _rulerOptions.MarkerCount;
int markerWidth = _rulerOptions.MarkerWidth;
int markerHeight = _rulerOptions.MarkerHeight;
int markerOffset = markerWidth / 2;
var y = VideoFrameHeight - markerHeight;
_context2D.FillRectangle(new RectangleF(0, y, VideoFrameWidth, markerHeight), _timeRulerBrush);
for (int i = 0; i < markerCount; ++i)
{
var x = markerOffset + i * (VideoFrameWidth - markerWidth) / markerCount;
var b = i % 10 == 0 ? _timeMarkerBrush2 : _timeMarkerBrush1;
var r = new RectangleF(x - markerOffset, y, markerWidth, markerHeight);
_context2D.FillRectangle(r, b);
}
// Draw current time
{
var duration = _rulerOptions.Duration.TotalMilliseconds;
var t = elapsedTime.TotalMilliseconds % duration;
var i = (float)(t * markerCount / duration);
var x = markerOffset + i * (VideoFrameWidth - markerWidth) / markerCount;
var r = new RectangleF(x - markerOffset, y, markerWidth, markerHeight);
_context2D.FillRectangle(r, _currentTimeBrush);
}
}
_context2D.EndDraw();
_context2D.Target = null;
return(true);
}
}
public void FillEllipse(Ellipse ellipse, Brush brush)
{
deviceContext.FillEllipse(ellipse, brush);
}
