142 lines
4.6 KiB
Fortran
142 lines
4.6 KiB
Fortran
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! This program takes output from the QHULL package and converts it into
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! a format suitable for use with the GeomGen script
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! J.Grogan 05/08/11
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program Voronoi3DPost
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!
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! Parameters
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parameter(max_verts=500000,max_cells=50000,max_verts_in_cell=100)
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parameter(max_hyps=500000,max_hyp_in_cell=100,max_verts_on_hyp=50)
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!
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! Variables
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character(len=256)full_line,test_string
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integer num_verts(max_cells)
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integer vert_list(max_cells,max_verts_in_cell)
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integer facet(2,max_hyps)
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integer hyp_list(max_cells,max_hyp_in_cell)
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integer num_cell_hyp(max_cells)
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integer cell_status(max_cells)
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integer num_hyp_verts(max_cells,max_hyp_in_cell)
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integer hyp_vert_list(max_cells,max_hyp_in_cell,max_verts_on_hyp)
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double precision xv_cor(max_verts)
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double precision yv_cor(max_verts)
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double precision zv_cor(max_verts)
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double precision cor(3,max_hyps)
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double precision offset(max_hyps)
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double precision xcor,ycor,zcor
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double precision dotrprod,distance,tol
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logical xtrue,ytrue,ztrue
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!
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! Open output files
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open(unit=12,file='fortranout.dat',status='unknown')
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!
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! Open scales file
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open(unit=15,file='scales.dat',status='unknown')
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read(15,*)rmaxscale
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!
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! Read tessellation results from QHULL
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open(unit=11,file='qhullout.dat',status='unknown')
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read(11,*)
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read(11,*)num_total_verts,num_cells
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!
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! Read in all vertice co-ordinates
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do i=1,num_total_verts
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read(11,*)xv_cor(i),yv_cor(i),zv_cor(i)
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enddo
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!
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! Read in vertice labels for each voronoi cell
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do i=1,num_cells
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read(11,*)num_verts(i)
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backspace(11)
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if(num_verts(i)>9)then
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read(11,'(i3,a256)')idummy,full_line
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else
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read(11,'(i2,a256)')idummy,full_line
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endif
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ileft=1
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num_points=1
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do iright=1,256
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test_string=full_line(iright:iright)
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if((test_string==' ').or.(iright==256))then
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read(full_line(ileft:iright-1),'(i6)')vert_list(i,num_points)
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if(num_points==num_verts(i))exit
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ileft=iright+1
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num_points=num_points+1
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endif
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enddo
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enddo
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!
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! Read in bounded hyperplane cell labels and co-ordinates
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read(11,*)num_hyp
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do i=1,num_hyp
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read(11,*)dummy,facet(1,i),facet(2,i),cor(1,i),cor(2,i),cor(3,i),offset(i)
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enddo
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!
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! Determine hyperplanes of each cell
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do i=1,num_cells
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num_hy=1
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do j=1,num_hyp
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if((facet(1,j)==i-1).or.(facet(2,j)==i-1))then
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hyp_list(i,num_hy)=j
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num_cell_hyp(i)=num_hy
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num_hy=num_hy+1
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endif
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enddo
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enddo
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!
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! Check if any cell vertices are outside the chosen tolerance
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do i=1,num_cells
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cell_status(i)=1
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do j=1,num_verts(i)
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xcor=xv_cor(vert_list(i,j)+1)
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ycor=yv_cor(vert_list(i,j)+1)
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zcor=zv_cor(vert_list(i,j)+1)
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rmax=1.1*rmaxscale
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rmin=-0.1
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xtrue=(xcor<rmax).and.(xcor>rmin)
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ytrue=(ycor<rmax).and.(ycor>rmin)
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ztrue=(zcor<rmax).and.(zcor>rmin)
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if(xtrue.and.ytrue.and.ztrue)cell_status(i)=0
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enddo
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enddo
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!
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! For all cells within tolerance determine vertices on each hyperplane
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num_skipped=0
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tol=1.e-5*rmaxscale
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do i=1,num_cells
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if(cell_status(i)/=0)then
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num_skipped=num_skipped+1
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cycle
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endif
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do j=1,num_cell_hyp(i)
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nverts_on_hyp=1
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do k=1,num_verts(i)
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dotprod1=cor(1,hyp_list(i,j))*xv_cor(vert_list(i,k)+1)
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dotprod2=cor(2,hyp_list(i,j))*yv_cor(vert_list(i,k)+1)
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dotprod3=cor(3,hyp_list(i,j))*zv_cor(vert_list(i,k)+1)
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distance=dotprod1+dotprod2+dotprod3+offset(hyp_list(i,j))
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if(abs(distance)<tol)then
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hyp_vert_list(i,j,nverts_on_hyp)=vert_list(i,k)
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num_hyp_verts(i,j)=nverts_on_hyp
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nverts_on_hyp=nverts_on_hyp+1
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endif
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enddo
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enddo
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enddo
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! Write output for the of co-orindates of vertices on each hyperplane
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! that make up a cell.
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write(12,*)num_cells-num_skipped
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do i=1,num_cells
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if(cell_status(i)/=0)cycle
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write(12,*)num_cell_hyp(i)
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do j=1,num_cell_hyp(i)
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write(12,*)num_hyp_verts(i,j)
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do k=1,num_hyp_verts(i,j)
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xcor=xv_cor(hyp_vert_list(i,j,k)+1)
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ycor=yv_cor(hyp_vert_list(i,j,k)+1)
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zcor=zv_cor(hyp_vert_list(i,j,k)+1)
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write(12,'(2(f20.15,a),f20.15)')xcor,',',ycor,',',zcor
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enddo
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enddo
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enddo
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end program
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