34
35
36
38 use element_mod , only : nixq
39
40
41
42#include "implicit_f.inc"
43#include "com04_c.inc"
44#include "com01_c.inc"
45
46
47
48 INTEGER IXQ(NIXQ,*),IPARTQ(*),TAGBUF(*),
49 . KNOD2ELQ(*),NOD2ELQ(*)
50 INTEGER IEXT,FLAG,NSEG0
51 INTEGER, INTENT(INOUT) :: NSEG
53 . x(3,*)
54 TYPE (SURF_) :: IGRSURF
55
56
57
58 INTEGER JQ, K, N1, N2, ISEG, KK, KQ, L1, L2, L, TRUEAXE, NQQ1, NQQ2
59 INTEGER NODTAG(4),LINES(2,4),NQ(4)
60 DATA lines/1,2,
61 . 2,3,
62 . 3,4,
63 . 4,1/
65 . y1,z1,y2,z2,y3,z3,y4,z4,
66 . yg,zg,pvect,psca,dy,dz,ny,nz
67
68
69 IF(iext==1)THEN
70
71
72 DO jq=1,numelq
73 IF (tagbuf(ipartq(jq))==0) cycle
74 nodtag(1:4)=1
75
76 DO l=1,4
77 nq(l) = ixq(l+1,jq)
78 l1 = lines(1,l)
79 l2 = lines(2,l)
80 nqq1 = ixq(l1+1,jq)
81 nqq2 = ixq(l2+1,jq)
82 DO k=knod2elq(nqq1)+1,knod2elq(nqq1+1)
83 kq=nod2elq(k)
84 IF(kq==jq .OR. kq > numelq)cycle
85 IF (tagbuf(ipartq(kq))==0)cycle
86 DO kk=1,4
87 IF(ixq(lines(1,kk)+1,kq)==nqq1.AND.ixq(lines(2,kk)+1,kq)==nqq2) THEN
88 nodtag(l)=0
89 ELSEIF(ixq(lines(1,kk)+1,kq)==nqq2.AND.ixq(lines(2,kk)+1,kq)==nqq1) THEN
90 nodtag(l)=0
91 ENDIF
92 ENDDO
93 ENDDO
94 ENDDO
95
96 y1 = x(2,nq(1))
97 z1 = x(3,nq(1))
98
99 y2 = x(2,nq(2))
100 z2 = x(3,nq(2))
101
102 y3 = x(2,nq(3))
103 z3 = x(3,nq(3))
104
105 y4 = x(2,nq(4))
106 z4 = x(3,nq(4))
107
108 yg = (y1+y2+y3+y4)/four
109 zg = (z1+z2+z3+z4)/four
110
111 DO l=1,4
112 l1 = lines(1,l)
113 l2 = lines(2,l)
114 trueaxe= 1
115 n1 = nq(l1)
116 n2 = nq(l2)
117 IF(n2d==1.AND.x(2,n1)<=em10.AND.x(2,n2)<=em10) THEN
118 trueaxe= 0
119 ENDIF
120
121 IF(trueaxe==1)THEN
122 IF(nodtag(l)==1) THEN
123 nseg=nseg+1
124 IF (flag == 1) THEN
125
126 dy = x(2,n2)-x(2,n1)
127 dz = x(3,n2)-x(3,n1)
128 ny = -dz
129 nz = dy
130 pvect = dy*dz
131 IF(pvect<zero) THEN
132 ny = dz
133 nz = -dy
134 ENDIF
135
136 psca = ny*(y1-yg)+nz*(z1-zg)
137 iseg = nseg
138 IF(psca<=zero) THEN
139 CALL qsurf(n1 ,n2 ,jq ,nseg0 ,iseg,
140 . igrsurf%ELTYP,igrsurf%ELEM,igrsurf%NODES)
141 ELSE
142 CALL qsurf(n2 ,n1 ,jq ,nseg0 ,iseg,
143 . igrsurf%ELTYP,igrsurf%ELEM,igrsurf%NODES)
144 ENDIF
145
146 ENDIF
147
148 ENDIF
149
150 ENDIF
151
152 ENDDO
153
154
155 ENDDO
156 ENDIF
157
158 RETURN
subroutine qsurf(n1, n2, jq, nseg0, iseg, surf_eltyp, surf_elem, surf_nodes)