Circle FindProto()
{
/*
* Search through the prototype list to see if there is already a shape table with the
* proper number of sides. If there is, we set the reference to it, and we're done.
* If not, we have to create one...
*/
Console.WriteLine("FindProto: {0} {1}", size, sides);
foreach (Circle c in prototypes)
{
if ((c.sides == sides) &&
(c.size == size))
{
return(c);
}
}
Console.WriteLine("FindProto2:");
/*
* We didn't find an existing prototype. We'll have to create a new one...
*/
Circle proto = new Circle();
proto.sides = sides;
proto.size = size;
proto.shape = new Point[sides + 1];
Console.WriteLine("FindProto3:");
double inc;
double angle;
inc = 3.14159 * 2.0 / sides;
angle = inc / 2;
for (int index = 0; index <= sides; index++)
{
//CODEGEN: Uncomment next line to hide problem.
//Console.WriteLine("");
double dX = (double)size * Math.Cos(angle);
double dY = (double)size * Math.Sin(angle);
proto.shape[index].X = (int)Math.Round(dX);
proto.shape[index].Y = (int)Math.Round(dY);
angle += inc;
}
Console.WriteLine("FindProto4:");
/*
* Special case to handle the size 1 and 2 cases, which don't work with the above...
*/
if (size == 1)
{
proto.shape[0].X = 0;
proto.shape[0].Y = 0;
}
else if (size == 2)
{
proto.shape[0].X = 0;
proto.shape[0].Y = 0;
proto.shape[1].X = 1;
proto.shape[1].Y = 0;
proto.shape[2].X = 1;
proto.shape[2].Y = 1;
proto.shape[3].X = 0;
proto.shape[3].Y = 1;
proto.shape[4].X = 0;
proto.shape[4].Y = 0;
}
prototypes.Add(proto);
return(proto);
}
