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testing normals for each tri edge and comparing

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This commit is contained in:
James E McClure
2018-09-15 10:39:00 -04:00
parent 58f02e913b
commit ae774f3e8d
1 changed files with 20 additions and 6 deletions
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26
tests/TestTriNormal.cpp
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@@ -56,7 +56,7 @@ int main(int argc, char **argv)
DECL object; DECL object;
Point P1,P2,P3; Point P1,P2,P3;
Point U; Point U,V,W;
int e1,e2,e3; int e1,e2,e3;
double nx,ny,nz; double nx,ny,nz;
double isovalue = 0.f; double isovalue = 0.f;
@@ -86,8 +86,8 @@ int main(int argc, char **argv)
} }
// test that normal is independent of the edge // test that normal is independent of the edge
e2 = object.halfedge.next(e1); e2 = object.halfedge.next(e1);
U = object.TriNormal(e2); V = object.TriNormal(e2);
dotprod=U.x*nx + U.y*ny + U.z*nz; dotprod=V.x*nx + V.y*ny + V.z*nz;
if (dotprod < 0){ if (dotprod < 0){
//printf("negative %f \n",dotprod); //printf("negative %f \n",dotprod);
count_minus++; count_minus++;
@@ -98,8 +98,8 @@ int main(int argc, char **argv)
} }
// check third edge // check third edge
e3 = object.halfedge.next(e2); e3 = object.halfedge.next(e2);
U = object.TriNormal(e3); W = object.TriNormal(e3);
dotprod=U.x*nx + U.y*ny + U.z*nz; dotprod=W.x*nx + W.y*ny + W.z*nz;
if (dotprod < 0){ if (dotprod < 0){
//printf("edge 3: negative %f \n",dotprod); //printf("edge 3: negative %f \n",dotprod);
count_minus++; count_minus++;
@@ -113,7 +113,21 @@ int main(int argc, char **argv)
count_check++; count_check++;
} }
dotprod=U.x*V.x+U.y*V.y+U.z*V.z;
if (dotprod < 0 ){
printf("normal for edge 1 / 2 disagree \n");
count_check++;
}
dotprod=U.x*W.x+U.y*W.y+U.z*W.z;
if (dotprod < 0 ){
printf("normal for edge 1 / 3 disagree \n");
count_check++;
}
dotprod=W.x*V.x+W.y*V.y+W.z*V.z;
if (dotprod < 0 ){
printf("normal for edge 2 / 3 disagree \n");
count_check++;
}
} }
} }
} }