public static Bitmap Render(CirclesAndLines stuff, Bitmap bmp)
{
Graphics gfx = Graphics.FromImage(bmp);
gfx.Clear(Color.DarkBlue);
gfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
foreach (var circle in stuff.circles)
{
// draw lines to every other circle
int brightestLineAlpha = 0;
foreach (var circle2 in stuff.circles)
{
if (circle2.Location == circle.Location)
{
continue;
}
var line = new Line(circle.Location, circle2.Location);
float lineLength = line.length / 2;
int alpha = (lineLength > 255) ? 0 : 255 - (int)lineLength;
brightestLineAlpha = Math.Max(brightestLineAlpha, alpha);
Pen linePen = new Pen(Color.FromArgb(alpha, 255, 255, 255));
gfx.DrawLine(linePen, circle.Location, circle2.Location);
}
// draw circle
int circleSize = 5;
Size size = new Size(circleSize, circleSize);
Point location = circle.Location;
location.X -= circleSize / 2;
location.Y -= circleSize / 2;
Rectangle rect = new Rectangle(location, size);
Brush circleBrush = new SolidBrush(Color.FromArgb(brightestLineAlpha, 255, 255, 255));
gfx.FillEllipse(circleBrush, rect);
}
return(bmp);
}
private void btnRedraw_Click(object sender, EventArgs e)
{
stuff = new Animations.CirclesAndLines(pictureBox1.Width, pictureBox1.Height, 10);
bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
pictureBox1.Image = Animations.RenderGDI.Render(stuff, bmp);
}