63 lines
2.1 KiB
C#
63 lines
2.1 KiB
C#
using SkiaSharp;
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using System.Threading.Tasks;
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public class MatrixRenderer
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{
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private readonly WledDdpClient _wled;
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private readonly int _width = 64;
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private readonly int _height = 64;
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public MatrixRenderer(string wledIp)
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{
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_wled = new WledDdpClient(wledIp);
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}
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//
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public async Task DrawAndSendFrameAsync(float currentTemp, int currentWater)
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//public async Task DrawAndSendFrameAsync(string currentTemp)
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{
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// 1. Create a 64x64 canvas
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using SKBitmap bitmap = new SKBitmap(_width, _height, SKColorType.Rgba8888, SKAlphaType.Premul);
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using SKCanvas canvas = new SKCanvas(bitmap);
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// 2. Clear background to black
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canvas.Clear(SKColors.Black);
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// 3. Draw something (e.g., Temperature Text)
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// Paint now only handles the color and rendering style
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using SKPaint textPaint = new SKPaint
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{
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Color = SKColors.Orange,
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IsAntialias = false // Keep crisp pixels for LED matrices
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};
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// Font handles the typography
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using SKFont textFont = new SKFont
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{
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Size = 16
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};
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// DrawText now takes the string, X, Y, the font, and the paint
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//canvas.DrawText($"{currentTemp:F1}c", 4, 32, textFont, textPaint);
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// DrawText now takes the string, X, Y, alignment, the font, and the paint
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canvas.DrawText($"{currentTemp:F1}c", 4, 12, SKTextAlign.Left, textFont, textPaint);
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canvas.DrawText($"{currentWater:F1}%", 4, 32, SKTextAlign.Left, textFont, textPaint);
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// 4. Convert 32-bit RGBA to 24-bit RGB for WLED
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byte[] rgbaBytes = bitmap.Bytes;
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byte[] rgbBytes = new byte[_width * _height * 3];
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int rgbIndex = 0;
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for (int i = 0; i < rgbaBytes.Length; i += 4)
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{
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rgbBytes[rgbIndex++] = rgbaBytes[i]; // R
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rgbBytes[rgbIndex++] = rgbaBytes[i + 1]; // G
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rgbBytes[rgbIndex++] = rgbaBytes[i + 2]; // B
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// We ignore rgbaBytes[i + 3] (Alpha channel)
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}
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// 5. Fire it over UDP!
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await _wled.SendFrameAsync(rgbBytes);
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}
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} |