/// <summary>
/// Tests the led strip.
/// </summary>
public static void TestLedStrip()
{
var exitAnimation = false;
var thread = new Thread(() =>
{
var strip = new LedStripAPA102C(60 * 4);
const int millisecondsPerFrame = 1000 / 25;
var lastRenderTime = DateTime.UtcNow;
var tailSize = strip.LedCount;
byte red = 0;
while (!exitAnimation)
{
strip.ClearPixels();
red = red >= 254 ? default : (byte)(red + 1);
for (var i = 0; i < tailSize; i++)
{
strip[i].Brightness = i / (tailSize - 1f);
strip[i].R = red;
strip[i].G = (byte)(255 - red);
strip[i].B = (byte)(strip[i].Brightness * 254);
}
var delayMilliseconds = Convert.ToInt32(DateTime.UtcNow.Subtract(lastRenderTime).TotalMilliseconds);
delayMilliseconds = millisecondsPerFrame - delayMilliseconds;
if (delayMilliseconds > 0 && exitAnimation == false)
{
Thread.Sleep(delayMilliseconds);
}
else
{
$"Lagging framerate: {delayMilliseconds} milliseconds".Info();
}
lastRenderTime = DateTime.UtcNow;
strip.Render();
}
strip.ClearPixels();
strip.Render();
})
{
IsBackground = true, Name = nameof(LedStripAPA102C)
};
thread.Start();
Console.Write("Press any key to stop and clear");
Console.ReadKey(true);
Console.WriteLine();
exitAnimation = true;
}
}
/// <summary>
/// Tests the led strip graphics.
/// </summary>
public static void TestLedStripGraphics()
{
BitmapBuffer pixels = null;
try
{
using (var bitmap =
new System.Drawing.Bitmap(Path.Combine(Runtime.EntryAssemblyDirectory, "fractal.jpg")))
{
$"Loaded bitmap with format {bitmap.PixelFormat}".Info();
pixels = new BitmapBuffer(bitmap);
$"Loaded Pixel Data: {pixels.Data.Length} bytes".Info();
}
}
catch (Exception ex)
{
$"Error Loading image: {ex.Message}".Error();
}
var exitAnimation = false;
var useDynamicBrightness = false;
var frameRenderTimes = new Queue <int>();
var frameTimes = new Queue <int>();
var thread = new Thread(() =>
{
var strip = new LedStripAPA102C(60 * 4, 1, 1000000); // 1 Mhz is sufficient for such a short strip (only 240 LEDs)
var millisecondsPerFrame = 1000 / 25;
var lastRenderTime = DateTime.UtcNow;
var currentFrameNumber = 0;
var currentBrightness = 0.8f;
var currentRow = 0;
var currentDirection = 1;
while (!exitAnimation)
{
// Push pixels into the Frame Buffer
strip.SetPixels(pixels, 0, currentRow, currentBrightness);
// Move the current row slowly at FPS
currentRow += currentDirection;
if (currentRow >= pixels.ImageHeight)
{
currentRow = pixels.ImageHeight - 2;
currentDirection = -1;
}
else if (currentRow <= 0)
{
currentRow = 1;
currentDirection = 1;
}
if (useDynamicBrightness)
{
currentBrightness = 0.05f + (0.80f * (currentRow / (pixels.ImageHeight - 1f)));
}
// Stats and sleep time
var delayMilliseconds = (int)DateTime.UtcNow.Subtract(lastRenderTime).TotalMilliseconds;
frameRenderTimes.Enqueue(delayMilliseconds);
delayMilliseconds = millisecondsPerFrame - delayMilliseconds;
if (delayMilliseconds > 0 && exitAnimation == false)
{
Thread.Sleep(delayMilliseconds);
}
else
{
$"Lagging framerate: {delayMilliseconds} milliseconds".Info();
}
frameTimes.Enqueue((int)DateTime.UtcNow.Subtract(lastRenderTime).TotalMilliseconds);
lastRenderTime = DateTime.UtcNow;
// Push the framebuffer to SPI
strip.Render();
if (currentFrameNumber == int.MaxValue)
{
currentFrameNumber = 0;
}
else
{
currentFrameNumber++;
}
if (frameRenderTimes.Count >= 2048)
{
frameRenderTimes.Dequeue();
}
if (frameTimes.Count >= 20148)
{
frameTimes.Dequeue();
}
}
strip.ClearPixels();
strip.Render();
var avg = frameRenderTimes.Average();
$"Frames: {currentFrameNumber + 1}, FPS: {Math.Round(1000f / frameTimes.Average(), 3)}, Strip Render: {Math.Round(avg, 3)} ms, Max FPS: {Math.Round(1000 / avg, 3)}"
.Info();
strip.Render();
});
thread.Start();
Console.Write("Press any key to stop and clear");
Console.ReadKey(true);
Console.WriteLine();
exitAnimation = true;
}