private void RenderGridLines(SKSurface surface, PixelRect dataRect, IAxis axis)
{
// TODO: restrict to visible ticks and max 1000?
Tick[] ticks = axis.TickGenerator.Ticks;
Pixel[] starts = new Pixel[ticks.Length];
Pixel[] ends = new Pixel[ticks.Length];
for (int i = 0; i < ticks.Length; i++)
{
float px = axis.GetPixel(ticks[i].Position, dataRect);
starts[i] = axis.Edge.IsHorizontal() ? new Pixel(px, dataRect.Bottom) : new Pixel(dataRect.Left, px);
ends[i] = axis.Edge.IsHorizontal() ? new Pixel(px, dataRect.Top) : new Pixel(dataRect.Right, px);
}
Drawing.DrawLines(surface, starts, ends, LineColor, LineWidth);
}