Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I've taken what some of you had to say and here's the solution I discovered:</p> <pre><code>public static Circle MinimalEnclosingCircle(Circle A, Circle B) { double angle = Math.Atan2(B.Y - A.Y, B.X - A.X); Point a = new Point((int)(B.X + Math.Cos(angle) * B.Radius), (int)(B.Y + Math.Sin(angle) * B.Radius)); angle += Math.PI; Point b = new Point((int)(A.X + Math.Cos(angle) * A.Radius), (int)(A.Y + Math.Sin(angle) * A.Radius)); int rad = (int)Math.Sqrt(Math.Pow(a.X - b.X, 2) + Math.Pow(a.Y - b.Y, 2)) / 2; if (rad &lt; A.Radius) { return A; } else if (rad &lt; B.Radius) { return B; } else { return new Circle((int)((a.X + b.X) / 2), (int)((a.Y + b.Y) / 2), rad); } } </code></pre> <p>Circle is defined by the X, Y of it's center and a Radius, all are ints. There's a constructor that is Circle(int X, int Y, int Radius). After breaking out some old trig concepts, I figured the best way was to find the 2 points on the circles that are farthest apart. Once I have that, the midpoint would be the center and half the distance would be the radius and thus I have enough to define a new circle. If I want to encompass 3 or more circles, I first run this on 2 circles, then I run this on the resulting encompassing circle and another circle and so on until the last circle is encompassed. There may be a more efficient way to do this, but right now it works and I'm happy with that.</p> <p>I feel weird answering my own question, but I could not have come to this solution without everybody's ideas and links. Thanks everybody.</p>
    singulars
    1. This table or related slice is empty.
    1. POFinding the smallest circle that encompasses other circles?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCorey Ogburn
    1. USCorey Ogburn
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COActually I tested this for: Circle(25,30,20) and Circle(45,30,40) and it just returns the second Circle (which is incorrect).
      singulars
      1. PO
      1. USChris Redford
    2. COI'm not sure how you came to that, I created those 2 circles and the circle that's returned for me is Circle(45, 29, 40). It's integer math which explains why it's slightly off, but this is correct. Please take a look at my project at http://coreyogburn.com/page/Circle-Library.aspx to see the implementation I'm testing with. If you still see a problem, please let me know there or here.
      singulars
      1. PO
      1. USCorey Ogburn
    3. CONever mind. The problem was the drawing program I was using. It was halving the radii of the circles. Circle(45, 30, 40) is indeed a correct Circle. Sorry about the confusion.
      singulars
      1. PO
      1. USChris Redford
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload