private void DrawEyes(float x, float y, float w, float h, float mx, float my, float t)
{
float ex = w * 0.23f;
float ey = h * 0.5f;
float lx = x + ex;
float ly = y + ey;
float rx = x + w - ex;
float ry = y + ey;
float br = MathF.Min(ex, ey) * 0.5f;
float blink = 1.0f - MathF.Pow(MathF.Sin(t * 0.5f), 200.0f) * 0.8f;
Paint bg = _nvg.LinearGradient(x, y + (h * 0.5f), x + (w * 0.1f), y + h, _nvg.Rgba(0, 0, 0, 32), _nvg.Rgba(0, 0, 0, 16));
_nvg.BeginPath();
_nvg.Ellipse(lx + 3.0f, ly + 16.0f, ex, ey);
_nvg.Ellipse(rx + 3.0f, ry + 16.0f, ex, ey);
_nvg.FillPaint(bg);
_nvg.Fill();
bg = _nvg.LinearGradient(x, y + (h * 0.25f), x + (w * 0.1f), y + h, _nvg.Rgba(220, 220, 220, 255), _nvg.Rgba(128, 128, 128, 255));
_nvg.BeginPath();
_nvg.Ellipse(lx, ly, ex, ey);
_nvg.Ellipse(rx, ry, ex, ey);
_nvg.FillPaint(bg);
_nvg.Fill();
float dx = (mx - rx) / (ex * 10.0f);
float dy = (my - ry) / (ey * 10.0f);
float d = MathF.Sqrt(dx * dx + dy * dy);
if (d > 1.0f)
{
dx /= d;
dy /= d;
}
dx *= ex * 0.4f;
dy *= ey * 0.5f;
_nvg.BeginPath();
_nvg.Ellipse(lx + dx, ly + dy + ey * 0.25f * (1.0f - blink), br, br * blink);
_nvg.FillColour(_nvg.Rgba(32, 32, 32, 255));
_nvg.Fill();
dx = (mx - rx) / (ex * 10.0f);
dy = (my - ry) / (ey * 10.0f);
d = MathF.Sqrt(dx * dx + dy * dy);
if (d > 1.0f)
{
dx /= d;
dy /= d;
}
dx *= ex * 0.4f;
dy *= ey * 0.5f;
_nvg.BeginPath();
_nvg.Ellipse(rx + dx, ry + dy + ey * 0.25f * (1.0f - blink), br, br * blink);
_nvg.FillColour(_nvg.Rgba(32, 32, 32, 255));
_nvg.Fill();
Paint gloss = _nvg.RadialGradient(lx - ex * 0.25f, ly - ey * 0.5f, ex * 0.1f, ex * 0.75f, _nvg.Rgba(255, 255, 255, 128), _nvg.Rgba(255, 255, 255, 0));
_nvg.BeginPath();
_nvg.Ellipse(lx, ly, ex, ey);
_nvg.FillPaint(gloss);
_nvg.Fill();
gloss = _nvg.RadialGradient(rx - ex * 0.25f, ry - ey * 0.5f, ex * 0.1f, ex * 0.75f, _nvg.Rgba(255, 255, 255, 128), _nvg.Rgba(255, 255, 255, 0));
_nvg.BeginPath();
_nvg.Ellipse(rx, ry, ex, ey);
_nvg.FillPaint(gloss);
_nvg.Fill();
}
