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francois |
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#include <stdio.h> |
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#include "m3d_struct.h" |
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#include "m3d_const.h" |
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#include "m3d_macro.h" |
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#include "prototype.h" |
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extern float tab_vn[5][3] ; |
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extern GEST_MEM *gest ; |
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extern float eps, eps2, eps3, eps4 ; |
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extern int tab_plan[4] ; |
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int m3d_intersection(float *coord,int in0,int in1,int in2,int in3,int in4,int in5,int in6) |
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{ |
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float v45[3], v56[3], v46[3], vec[3], va1a2[3], va1_1[3], va1_2[3], pvec1[3], pvec2[3], prosca, isigne ,prosca1, prosca2 ; |
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int nb = 0 ; |
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int isom4 = -1 , isom5 = -1 , isom6 = -1 ; |
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int isom0 = -1, isom1 = -1, isom2 = -1, isom3 = -1 ; |
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int isom_p1 = -1 , isom_p2 = -1, isom_p3 = -1, inter ; |
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int inum1, inum2_1, inum2_2, num_plan1, num_plan2 ; |
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int ina1, ina2, ipt ; |
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int iptlie1, iptlie2, vec1[3], vec2[3] ; |
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int iflie1 = -1, iflie2 = -1, iflie3 = -1 ; |
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/* bloc commun */ |
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isom4 = isom5 = isom6 = -1 ; |
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if (in4 == in0) isom4 = 0 ; |
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else if (in4 == in1) isom4 = 1 ; |
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else if (in4 == in2) isom4 = 2 ; |
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else if (in4 == in3) isom4 = 3 ; |
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if (in5 == in0) isom5 = 0 ; |
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else if (in5 == in1) isom5 = 1 ; |
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else if (in5 == in2) isom5 = 2 ; |
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else if (in5 == in3) isom5 = 3 ; |
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if (in6 == in0) isom6 = 0 ; |
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else if (in6 == in1) isom6 = 1 ; |
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else if (in6 == in2) isom6 = 2 ; |
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else if (in6 == in3) isom6 = 3 ; |
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if (isom4 != -1) nb ++ ; |
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if (isom5!= -1) nb ++ ; |
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if (isom6 != -1) nb ++ ; |
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if (in4 == in0) isom0 = 4 ; |
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else if (in5 == in0) isom0 = 5 ; |
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else if (in6 == in0) isom0 = 6 ; |
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if (in4==in1) isom1 = 4 ; |
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else if (in5==in1) isom1 = 5 ; |
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else if (in6==in1) isom1 = 6 ; |
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if (in4==in2) isom2 = 4 ; |
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else if (in5==in2) isom2 = 5 ; |
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else if (in6==in2) isom2 = 6 ; |
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if (in4==in3) isom3 = 4 ; |
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else if (in5==in3) isom3 = 5 ; |
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else if (in6==in3) isom3 = 6 ; |
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if (nb == 3) return(FAUX) ; |
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VECTEUR(v45,(coord+in4),(coord+in5)) |
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VECTEUR(v56,(coord+in5),(coord+in6)) |
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VECTEUR(v46,(coord+in4),(coord+in6)) |
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tab_vn[4][0] = PVECX(v45,v46) ; |
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tab_vn[4][1] = PVECY(v45,v46) ; |
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tab_vn[4][2] = PVECZ(v45,v46) ; |
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/* ********************************** */ |
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/* ---------------------------------- */ |
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/* adjacence */ |
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/* ---------------------------------- */ |
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/* ********************************** */ |
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nb = 0 ; |
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/* |
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if (nb == 2) |
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{ |
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if (isom4 == -1) |
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{ |
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inum1 = in4 ; |
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ina1 = in5 ; |
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ina2 = in6 ; |
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} |
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else if (isom5 == -1) |
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{ |
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inum1 = in5 ; |
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ina1 = in4 ; |
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ina2 = in6 ; |
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} |
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else |
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{ |
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inum1 = in6 ; |
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ina1 = in4 ; |
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ina2 = in5 ; |
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} |
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if (isom0 != -1) |
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{ |
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ipt = in0 ; |
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if (isom1 != -1) |
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{ |
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num_plan1 = 0 ; |
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num_plan2 = 1 ; |
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inum2_1 = in2 ; |
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inum2_2 = in3 ; |
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} |
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else if (isom2 != -1) |
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{ |
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num_plan1 = 0 ; |
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num_plan2 = 3 ; |
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inum2_1 = in1 ; |
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inum2_2 = in3 ; |
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} |
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else if (isom3 != -1) |
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{ |
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num_plan1 = 1 ; |
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num_plan2 = 3 ; |
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inum2_1 = in1 ; |
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inum2_2 = in2 ; |
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} |
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} |
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else if (isom1 != -1) |
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{ |
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ipt = in1 ; |
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if (isom2 != -1) |
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{ |
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num_plan1 = 0 ; |
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num_plan2 = 2 ; |
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inum2_1 = in0 ; |
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inum2_2 = in3 ; |
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} |
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else if (isom3 != -1) |
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{ |
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num_plan1 = 1 ; |
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num_plan2 = 2 ; |
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inum2_1 = in0 ; |
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inum2_2 = in2 ; |
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} |
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} |
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else if (isom2 != -1) |
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{ |
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ipt = in2; |
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if (isom3 != -1) |
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{ |
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num_plan1 = 2 ; |
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num_plan2 = 3 ; |
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inum2_1 = in1 ; |
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inum2_2 = in0 ; |
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} |
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} |
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if (tab_plan[num_plan1] && tab_plan[num_plan2]) return(FAUX) ; |
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VECTEUR(vec,(coord+ipt),(coord+inum1)) |
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prosca1 = PROSCA(vec,tab_vn[num_plan1]) ; |
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prosca2 = PROSCA(vec,tab_vn[num_plan2]) ; |
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if (prosca1 > eps3) return(FAUX) ; |
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if (prosca2 > eps3) return(FAUX) ; |
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if ((prosca1 < -eps3) && (prosca2 < -eps3)) |
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{ |
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return(VRAI) ; |
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} |
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if (- prosca1 <= eps3) |
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{ |
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if (num_plan1 == 0) return(FAUX) ; |
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VECTEUR(va1a2,(coord + ina1),(coord+ina2)) |
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VECTEUR(va1_1,(coord + ina1),(coord+inum1)) |
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VECTEUR(va1_2,(coord + ina1),(coord+inum2_1)) |
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pvec1[0] = PVECX(va1a2,va1_1) ; |
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pvec1[1] = PVECY(va1a2,va1_1) ; |
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pvec1[2] = PVECZ(va1a2,va1_1) ; |
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pvec2[0] = PVECX(va1a2,va1_2) ; |
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pvec2[1] = PVECY(va1a2,va1_2) ; |
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pvec2[2] = PVECZ(va1a2,va1_2) ; |
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if (PROSCA(pvec1,pvec2) > 0.) |
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{ |
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return(VRAI) ; |
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} |
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else return(FAUX) ; |
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} |
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if (- prosca2 < eps3) |
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{ |
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if (tab_plan[num_plan2]) return(FAUX) ; |
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VECTEUR(va1a2,(coord + ina1),(coord+ina2)) |
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VECTEUR(va1_1,(coord + ina1),(coord+inum1)) |
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VECTEUR(va1_2,(coord + ina1),(coord+inum2_2)) |
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pvec1[0] = PVECX(va1a2,va1_1) ; |
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pvec1[1] = PVECY(va1a2,va1_1) ; |
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pvec1[2] = PVECZ(va1a2,va1_1) ; |
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pvec2[0] = PVECX(va1a2,va1_2) ; |
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pvec2[1] = PVECY(va1a2,va1_2) ; |
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pvec2[2] = PVECZ(va1a2,va1_2) ; |
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if (PROSCA(pvec1,pvec2) > 0.) |
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{ |
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return(VRAI) ; |
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} |
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else return(FAUX) ; |
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} |
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} |
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*/ |
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/* |
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if (isom4 == -1) if (m3d_intetra(coord,in0,in1,in4)) return(VRAI) ; |
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if (isom5 == -1) if (m3d_intetra(coord,in0,in1,in5)) return(VRAI) ; |
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if (isom6 == -1) if (m3d_intetra(coord,in0,in1,in6)) return(VRAI) ; |
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*/ |
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/* tests d'intersection a optimiser */ |
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inter = FAUX ; |
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/* intersection avec la face 4 */ |
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if (!tab_plan[1]) |
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if (!tab_plan[3]) |
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m3d_seg_face(coord,in0,in3,in4,in5,in6,tab_vn[4],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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if (!tab_plan[1]) |
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if (!tab_plan[2]) |
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m3d_seg_face(coord,in1,in3,in4,in5,in6,tab_vn[4],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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if (!tab_plan[2]) |
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if (!tab_plan[3]) |
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m3d_seg_face(coord,in2,in3,in4,in5,in6,tab_vn[4],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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if (!tab_plan[1]) |
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{ |
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m3d_seg_face(coord,in4,in5,in0,in1,in3,tab_vn[1],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in4,in6,in0,in1,in3,tab_vn[1],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in5,in6,in0,in1,in3,tab_vn[1],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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} |
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if (!tab_plan[2]) |
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{ |
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m3d_seg_face(coord,in4,in5,in1,in2,in3,tab_vn[2],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in4,in6,in1,in2,in3,tab_vn[2],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in5,in6,in1,in2,in3,tab_vn[2],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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} |
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if (!tab_plan[3]) |
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{ |
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m3d_seg_face(coord,in4,in5,in0,in3,in2,tab_vn[3],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in4,in6,in0,in3,in2,tab_vn[3],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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m3d_seg_face(coord,in5,in6,in0,in3,in2,tab_vn[3],&inter) ; |
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if (inter) |
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{ |
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return(VRAI) ; |
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} |
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} |
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return(FAUX) ; |
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} |
