The spiral of fractal

Twist a straight line into a spiral upward, and then twist the resulting spiral straight into a straight line to spiral upward so that an infinite loop is created. A fractal helix is generated.

Core code:

1 voidCfractalhelix::fractalhelix (Constvector3& Vstart,Constvector3& Vend, vector3*pvertices)2 {3Vector3 VDir = Vend-Vstart;4     floatLen = D3dxvec3length (&vDir);5     floatRadius = len*m_params[0];6 7     floatXZ = sqrtf (vdir.x*vdir.x + vdir.z*vdir.z);8     floatAngley =atan2f (XZ, vdir.y);9     floatAnglexz =atan2f (vdir.x, vdir.z);Ten  One     floatE =sin (angley); A     floatf =cos (angley); -  -     floatg =sin (anglexz); the     floath =cos (ANGLEXZ); -  -      for(inti =0; i < Circle_points_count; i++) -     { +Pvertices[i] = Vstart + vdir* (i*1.0f/circle_points_count); -  +         floatx0 =m_vsincos[i].y; A         floaty0 =-m_vsincos[i].x*e; at         floatZ0 = + m_vsincos[i].x*F; -  -         floatX1 = x0*h + z0*G; -         floatY1 =y0; -         floatZ1 =-x0*g + z0*h; -          inpvertices[i].x + = x1*radius; -Pvertices[i].y + = y1*radius; toPvertices[i].z + = z1*radius; +     } -}

The code is a little bit dizzy, in fact, it is to break a line, create a number of lines representing the curve, and then continue to iterate. But the code is a bit flawed, and some of the seams are too much too smooth.

Software:

The spiral of fractal