CODEWITHSUNDEEP
javamathpolygonhexagonal-tiles
Panda
Panda

Reputation: 11

Automatically generate an Hexagonal grid in Java

  public void paintComponent(Graphics g) 
  {
    super.paintComponent(g);
    for (int  n = 0; n < 13; n++)
    {
        double hexCentX = x/2+(3*u*n*Math.cos(Math.PI/3));
        double hexCentY = y/2+(u*n*Math.sin(Math.PI/3));
        Polygon sn = new Polygon();
        for (int i = 0; i < 6; i++)
          sn.addPoint((int) (hexCentX + u * Math.cos(i * Math.PI / 3)),
              (int) (hexCentY + u * Math.sin(i * Math.PI / 3)));
        g.drawPolygon(sn);
        g.drawString(Integer.toString(n), (int)hexCentX, (int)hexCentY);
    }
  }

I'm trying to script something together to automatically build a grid of Hexagons. Hexagons are of arbitrary size u, and Hexagon'0' should be in the centre of a window x by y with sequential ones added in rings around it.

In theory, I think, my maths should be sound, but something is going drastically wrong somewhere, because it does this instead.

https://www.dropbox.com/s/suj282lnkmxn0g1/hexagons.bmp

They just go in a diagonal downwards line. Apologies for the low-def image!

Would anyone be able to help me fix my code and/or point out the glaring failure in mathematics? Will provide the entire program if needed!

Upvotes: 1

Views: 1299

Answers (1)

user3146587
user3146587

Reputation: 4330

From the code, all the centers of your hexagon indeed lie on the line C(t) = (x/2+3*u*t*c, y/2+u*t*s). In your outer loop, you need to generate hexagon centers coordinates that actually lie on a spiral.

Upvotes: 1

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