private void MakeBackground()
{
sw = new Surface(Width, Height);
sw.Fill(0, 0, 128);
var top = new Vector3D(0, 0, 64);
var bottom = new Vector3D(64, 64, 255);
// gradient
for (var j = 0; j < Height; j++)
{
var a = (double)j / Height;
var color = bottom * a + top * (1 - a);
var r = (int)color.X;
var g = (int)color.Y;
var b = (int)color.Z;
sw.DrawLine(0, j, Width - 1, j, r, g, b);
}
#if false
var font = new FontController();
int curPos = 0;
var xpos = curPos;
var ypos = Height / 2 - font.Font.LineHeight / 2;
var gap = (Height - font.Font.LineHeight) * 0.4;
font.Render(ref xpos, ref ypos, "Hypnocube!",
Width, Height,
(i, j, r, g, b, a) =>
{
if (a != 0)
{
i += 5;
int r1, g1, b1;
var j2 = (int)(j + Math.Sin(frame / 8.0 + i * 9.0 / Width) * gap);
sw.GetPixel(i, j2, out r1, out g1, out b1);
//j2 = j;
r1 = a * r / 255 + (255 - a) * r1 / 255;
g1 = a * g / 255 + (255 - a) * g1 / 255;
b1 = a * b / 255 + (255 - a) * b1 / 255;
sw.SetPixel(i, j2, r1, g1, b1);
}
}
);
#endif
// checkerboard
//for (var i = 0; i < Width; ++i)
// for (var j = 0; j < Height; ++j)
// {
// var c = (j/16 + i/16) & 1;
// int r, g, b;
// r = g = b = 255;
// if (c==1)
// r = g = 0;
// sw.SetPixel(i, j, r, g, b);
// }
}