public void UpdateCanvas(ref Rgba32[] canvas, ref float[] positionX, ref float[] positionY)
{
for (int i = 0; i < numParticles; i++)
{
var x = (int)positionX[i];
var y = (int)positionY[i];
if (x < width && y < height)
{
var index = ArrayIndex.From2DTo1D(x, y, width);
canvas[index] = new Rgba32(255, 255, 255, 255);
}
}
}
internal void Update(ref float[] positionX, ref float[] positionY)
{
frame = new Image <Rgba32>(width, height);
var pixels = frame.GetPixelSpan();
for (int i = 0; i < positionX.Length; i++)
{
var px = wrapAround(positionX[i], width - 1);
var py = wrapAround(positionY[i], height - 1);
var index = ArrayIndex.From2DTo1D((int)px, (int)py, width);
pixels[index] = new Rgba32(255, 255, 255);
}
}