Function WireSphere

xdevice.cpp:1982–2009

// are used to mark the exact locations of zoomed in planets in the scene.

void WireSphere(int x, int y, int z, int r)
{
  real rgx[12+1], rgy[12+1], rgr[6+1];
  int rgz[6+1], i, j, x1, y1, x2, y2;

  for (i = 0; i < 12; i++) {
    rgx[i] = RCosD((real)(i * nDegMax / 12));
    rgy[i] = RSinD((real)(i * nDegMax / 12));
  }
  rgx[12] = rgx[0]; rgy[12] = rgy[0];
  for (i = 0; i <= 6; i++) {
    rgz[i] = z + (int)((real)r * rgx[i]);
    rgr[i] = (real)r * rgy[i];
  }
  for (j = 1; j <= 6; j++) {
    x2 = x + (int)rgr[j]; y2 = y;
    for (i = 0; i < 12; i++) {
      x1 = x2; y1 = y2;
      x2 = x + (int)(rgr[j] * rgx[i+1]);
      y2 = y + (int)(rgr[j] * rgy[i+1]);
      if (j < 6)
        WireLine(x1, y1, rgz[j], x2, y2, rgz[j]);
      x1 = x + (int)(rgr[j-1] * rgx[i+1]);
      y1 = y + (int)(rgr[j-1] * rgy[i+1]);
      WireLine(x2, y2, rgz[j], x1, y1, rgz[j-1]);
    }
  }
}


// Add a fixed star to the current wireframe file.