private unsafe void DrawLines(float x, float y, float w, float h, float t)
{
float pad = 5.0f;
float s = w / 9.0f - pad * 2;
float *pts = stackalloc float[4 * 2];
LineCap[] joins = { LineCap.Miter, LineCap.Round, LineCap.Bevel };
LineCap[] caps = { LineCap.Butt, LineCap.Round, LineCap.Square };
_nvg.Save();
pts[0] = -s * 0.25f + MathF.Cos(t * 0.3f) * s * 0.5f;
pts[1] = MathF.Sin(t * 0.3f) * s * 0.5f;
pts[2] = -s * 0.25f;
pts[3] = 0;
pts[4] = s * 0.25f;
pts[5] = 0;
pts[6] = s * 0.25f + MathF.Cos(-t * 0.3f) * s * 0.5f;
pts[7] = MathF.Sin(-t * 0.3f) * s * 0.5f;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
float fx = x + s * 0.5f + (i * 3 + j) / 9.0f * w + pad;
float fy = y - s * 0.5f + pad;
_nvg.LineCap(caps[i]);
_nvg.LineJoin(joins[j]);
_nvg.StrokeWidth(s * 0.3f);
_nvg.StrokeColour(new Colour(0, 0, 0, 160));
_nvg.BeginPath();
_nvg.MoveTo(fx + pts[0], fy + pts[1]);
_nvg.LineTo(fx + pts[2], fy + pts[3]);
_nvg.LineTo(fx + pts[4], fy + pts[5]);
_nvg.LineTo(fx + pts[6], fy + pts[7]);
_nvg.Stroke();
_nvg.LineCap(LineCap.Butt);
_nvg.LineJoin(LineCap.Bevel);
_nvg.StrokeWidth(1.0f);
_nvg.StrokeColour(new Colour(0, 192, 255, 255));
_nvg.BeginPath();
_nvg.MoveTo(fx + pts[0], fy + pts[1]);
_nvg.LineTo(fx + pts[2], fy + pts[3]);
_nvg.LineTo(fx + pts[4], fy + pts[5]);
_nvg.LineTo(fx + pts[6], fy + pts[7]);
_nvg.Stroke();
}
}
_nvg.Restore();
}