protected PhysicalBody(Material material, Point velocity, bool isStatic,
ConvexPolygon shape)
{
if (shape == null)
{
Mass = 0;
}
else if (isStatic)
{
Mass = double.PositiveInfinity;
}
else
{
Mass = shape.GetArea() * material.density;
}
Material = material;
Acceleration = new Point(0, 0);
Velocity = velocity;
IsStatic = isStatic;
Shape = shape;
}
