protected static void ValidateTestPixmap(SKPixmap pix, byte alpha = 255)
{
Assert.NotNull(pix);
Assert.Equal(40, pix.Width);
Assert.Equal(40, pix.Height);
Assert.Equal(SKColors.Red.WithAlpha(alpha), pix.GetPixelColor(10, 10));
Assert.Equal(SKColors.Green.WithAlpha(alpha), pix.GetPixelColor(30, 10));
Assert.Equal(SKColors.Blue.WithAlpha(alpha), pix.GetPixelColor(10, 30));
Assert.Equal(SKColors.Yellow.WithAlpha(alpha), pix.GetPixelColor(30, 30));
}
public string Print(SKPixmap b)
{
var colorMappings = new Dictionary <uint, char>
{
[0] = '.',
[background.ToUint32()] = '#'
};
var sb = new StringBuilder();
for (var y = 0; y < b.Height; y += 1)
{
for (var x = 0; x < b.Width; x += 1)
{
var c = (uint)b.GetPixelColor(x, y);
if (colorMappings.TryGetValue(c, out var p))
{
sb.Append(p);
}
else
{
var px = (char)('a' + colorMappings.Count);
colorMappings[c] = px;
sb.Append(px);
}
}
sb.Append("\n");
}
return(sb.ToString());
}
private void TakeSamples(IEnumerable <BrushRenderTarget> renderTargets)
{
int sampleSize = _sampleSizeSetting.Value;
int sampleDepth = Math.Sqrt(sampleSize).RoundToInt();
int bitmapWidth = Bitmap.Width;
int bitmapHeight = Bitmap.Height;
using SKPixmap pixmap = Bitmap.PeekPixels();
foreach (BrushRenderTarget renderTarget in renderTargets)
{
// SKRect has all the good stuff we need
int left = (int)((renderTarget.Rectangle.Location.X + 4) * Scale.Horizontal);
int top = (int)((renderTarget.Rectangle.Location.Y + 4) * Scale.Vertical);
int width = (int)((renderTarget.Rectangle.Size.Width - 8) * Scale.Horizontal);
int height = (int)((renderTarget.Rectangle.Size.Height - 8) * Scale.Vertical);
int verticalSteps = height / (sampleDepth - 1);
int horizontalSteps = width / (sampleDepth - 1);
int a = 0, r = 0, g = 0, b = 0;
for (int horizontalStep = 0; horizontalStep < sampleDepth; horizontalStep++)
{
for (int verticalStep = 0; verticalStep < sampleDepth; verticalStep++)
{
int x = left + horizontalSteps * horizontalStep;
int y = top + verticalSteps * verticalStep;
if (x < 0 || x >= bitmapWidth || y < 0 || y >= bitmapHeight)
{
continue;
}
SKColor color = pixmap.GetPixelColor(x, y);
a += color.Alpha;
r += color.Red;
g += color.Green;
b += color.Blue;
// Uncomment to view the sample pixels in the debugger, need a checkbox in the actual debugger but this was a quickie
// Bitmap.SetPixel(x, y, new SKColor(0, 255, 0));
}
}
RenderedTargets[renderTarget] = new Color(a / sampleSize, r / sampleSize, g / sampleSize, b / sampleSize);
}
}
public override SKColor GetColor(ArtemisLed led, SKPoint renderPoint)
{
const int sampleSize = 9;
const int sampleDepth = 3;
var renderBounds = Layer.Bounds;
var widthScale = pixmap.Width / renderBounds.Width;
var heightScale = pixmap.Height / renderBounds.Height;
lock (pixmapLock)
{
int x = (int)(renderPoint.X * widthScale);
int y = (int)(renderPoint.Y * heightScale);
int width = (int)(led.Rectangle.Width * widthScale);
int height = (int)(led.Rectangle.Height * heightScale);
int verticalSteps = height / (sampleDepth - 1);
int horizontalSteps = width / (sampleDepth - 1);
int a = 0, r = 0, g = 0, b = 0;
for (int horizontalStep = 0; horizontalStep < sampleDepth; horizontalStep++)
{
for (int verticalStep = 0; verticalStep < sampleDepth; verticalStep++)
{
var bruhX = x + horizontalSteps * horizontalStep;
var bruhY = y + verticalSteps * verticalStep;
SKColor color = pixmap.GetPixelColor(bruhX, bruhY);
r += color.Red;
g += color.Green;
b += color.Blue;
a += color.Alpha;
}
}
return(new SKColor((byte)(r / sampleSize), (byte)(g / sampleSize), (byte)(b / sampleSize)));
}
}