Comments (2)
Hello!
It is not determined how to prolong ab
edge by the surface. I can reccomend defining a plane using surface normal and ab
edge.
MeshEdgePoint a,b; // input data
Mesh mesh; // input mesh
UndirectedEdgeBitSet selectedEdges; // input edges to find intersections on
//define plane
auto plane = Plane3f::fromDirAndPt( cross( mesh.edgePoint(b) - mesh.edgePoint(a), mesh.normal( MeshTriPoint(a) ) ), mesh.edgePoint(a) );
// find intersections
std::vector<MeshEdgePoint> intersections;
for ( auto ue : selectedEdges )
{
float orgD = plane.distance( mesh.orgPt( EdgeId( ue ) ) );
float destD = plane.distance( mesh.destPt( EdgeId( ue ) ) );
if ( orgD * destD > 0.0f ) // same sign - no intersection
continue;
intersections.push_back( MeshEdgePoint( EdgeId( ue ), std::abs(orgD)/(std::abs(orgD)+std::abs(destD)) ) );
}
from meshlib.
Thanks a lot.
from meshlib.
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from meshlib.