// shape6.java  plot 3d data  Utah Graphics  to shape6.dat shape6.stl
//                 javac -cp . shape6.java
//             _   java  -cp . shape6 > shape6_java.out
// 6 copies around dang = 2Pi/6 = Pi/3  60 degrees

import java.io.*;

public class shape6  // only 2d lines first cut, z=0
{
  boolean debug = true;
  int pts, pt, np, j;
  int k = 0; // index into newpts k++
  datread DR; // = new datread(filename); // defines data structures
  int new_points = 0; // for each x,y,z point kept
  int new_polys = 0; // k/4 for datwrite
  double xyz[][] = new double[10000][3]; // x, y, z for output
  int newpts[] = new int[40000]; // 2, xyz1, xyz2 for output
  String fileout = "shape6.dat";
  double Pi =  Math.PI;
  double ang = 0.0;
  double pang[] = new double[9];
  double pxy[] = new double[2];    
  double xca[][] = new double[6][13]; // rotated
  double yca[][] = new double[6][13]; // rotated
  double ptx[][] = new double[6][13];
  double pty[][] = new double[6][13];
  double ptr[][] = new double[6][13];
  double pta[][] = new double[6][13];

    
  public shape6()
  {
    double xc, yc, r, ang1, ang2, rxc, ryc;
    double pt1x, pt1y, pt2x, pt2y, dx, dy;
    int ca0, ca1, ca2, ca3, ca4, ca5, ca6, ca7; // inner arcs
    System.out.println("shape6.java running");
    new_polys = 0;
    new_points = 0;

    pang[0] = 0.0; // angle going up from 0
    pang[1] = Pi/48.0; 
    pang[2] = Pi/24.0;
    pang[3] = 3.0*Pi/48.0;
    pang[4] = Pi/12.0;
    pang[5] = 5.0*Pi/48.0;
    pang[6] = Pi/8.0;
    pang[7] = 7.0*Pi/48.0;
    pang[8] = Pi/6.0; 
    System.out.println(" ");
    System.out.println("generate 13 points of pattern, outside");
    ptr[0][0]  = 4.0;
    pta[0][0]  = -pang[8];
    ptr[0][1]  = 4.0;
    pta[0][1]  = -pang[3];
    ptr[0][2]  = 5.0;
    pta[0][2]  = -pang[2];
    ptr[0][3]  = 6.5;
    pta[0][3]  = -pang[6];
    ptr[0][4]  = 7.2;
    pta[0][4]  = -pang[5];
    ptr[0][5]  = 7.0;
    pta[0][5]  = -pang[2];
    ptr[0][6]  = 8.0;
    pta[0][6]  = pang[0];
    ptr[0][7]  = 7.0;
    pta[0][7]  = pang[2];
    ptr[0][8]  = 7.2;
    pta[0][8]  = pang[5];
    ptr[0][9]  = 6.5;
    pta[0][9]  = pang[6];
    ptr[0][10] = 5.0;
    pta[0][10] = pang[2];
    ptr[0][11] = 4.0;
    pta[0][11] = pang[3];
    ptr[0][12] = 4.0;
    pta[0][12] = pang[8];
    for(int i=0; i<13; i++)
    {
      ptx[0][i] = ptr[0][i]*Math.cos(pta[0][i]);
      pty[0][i] = ptr[0][i]*Math.sin(pta[0][i]);
      xyz[i][0] = ptx[0][i];
      xyz[i][1] = pty[0][i];
      xyz[i][2] = 0.0;
      new_points = new_points+1;
      System.out.println("pt"+new_points+" x="+ptx[0][i]+" y="+pty[0][i]);    
    } // end i
    System.out.println(" ");
    System.out.println("13 points generated, outside");
    System.out.println(" ");
    System.out.println("make 5 copies cycled ");
    for(int j=1; j<6; j++)
    {
      System.out.println("j="+j+"  new_points="+new_points);
      for(int i=0; i<13; i++)
      {
	ptr[j][i] = ptr[j-1][i];
	pta[j][i] = pta[j-1][i]+Pi/3.0;  
        ptx[j][i] = ptr[j][i]*Math.cos(pta[j][i]);
        pty[j][i] = ptr[j][i]*Math.sin(pta[j][i]);
        xyz[new_points][0] = ptx[j][i];
        xyz[new_points][1] = pty[j][i];
        xyz[new_points][2] = 0.0;
        new_points = new_points+1;
        System.out.println("pt"+new_points+" x="+ptx[0][i]+" y="+pty[0][i]);
      } // end i
    } // end j
    System.out.println(" ");
    System.out.println("5 rotations generated, outside");
    System.out.println(" ");
    System.out.println("connect lines ");
    for(int i=1; i<6*13; i++)
    {
      newpts[k++] = 2;
      newpts[k++] = i;
      newpts[k++] = i+1;
    } // end i
    System.out.println(" ");
    System.out.println("outside lines connected ");
    System.out.println(" ");
    System.out.println("generate inside points ");
    r = 2.0;
    ang = 0.0;
    pt = new_points;
    for(int i=0; i<12; i++)
    {
      xyz[new_points][0] = r*Math.cos(ang);
      xyz[new_points][1] = r*Math.sin(ang);
      xyz[new_points][2] = 0.0;
      new_points = new_points+1;
      System.out.println("pt"+new_points+" x="+ptx[0][i]+" y="+pty[0][i]);
      ang = ang + Pi/6.0;
    } // end i
    System.out.println("inside points generated ");
    System.out.println(" ");
    System.out.println("generate inside lines ");
    for(int i=1; i<12; i++)
    {
      newpts[k++] = 2;
      newpts[k++] = pt+i;
      newpts[k++] = pt+i+1;
    } // end i
    newpts[k++] = 2; // close inside
    newpts[k++] = newpts[k-3];
    newpts[k++] = pt+1;

    System.out.println("inside lines generated ");
    System.out.println(" ");

    new_polys = k/3;
    System.out.println("new_polys="+new_polys);
    new datwrite(fileout, xyz, new_points, newpts, new_polys);
    System.out.println("shape6.java finished");

  } // shape6 constructor

  public static void main(String[] args)
  {
    new shape6(); // writes shape6.dat
  }
} // end class  shape6.java