MRProjectionMeshAttribute.h

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#pragma once
 
#include "MRAffineXf.h"
#include "MRMesh.h"
#include "MRBitSetParallelFor.h"
#include "MRMeshProject.h"
#include "MRMeshAttributesToUpdate.h"
 
namespace MR
{
 
struct ProjectAttributeParams
{
    MeshProjectionTransforms xfs;
    ProgressCallback progressCb;
};
 
// projecting the vertex attributes of the old onto the new one
// returns false if canceled by progress bar
template<typename F>
bool projectVertAttribute( const MeshVertPart& mp, const Mesh& oldMesh, F&& func, const ProjectAttributeParams& params = {} );
 
// projecting the face attributes of the old onto the new one
// returns false if canceled by progress bar
template<typename F>
bool projectFaceAttribute( const MeshPart& mp, const Mesh& oldMesh, F&& func, const ProjectAttributeParams& params = {} );
 
 
template<typename F>
bool projectVertAttribute( const MeshVertPart& mp, const Mesh& oldMesh, F&& func, const ProjectAttributeParams& params )
{
    return BitSetParallelFor( mp.mesh.topology.getVertIds( mp.region ), [&] ( VertId id )
    {
        auto point = !params.xfs.rigidXfPoint ? mp.mesh.points[id] : ( *params.xfs.rigidXfPoint )( mp.mesh.points[id] );
        auto projectionResult = findProjection( point, oldMesh, FLT_MAX, params.xfs.nonRigidXfTree );
        auto res = projectionResult.mtp;
        VertId v1 = oldMesh.topology.org( res.e );
        VertId v2 = oldMesh.topology.dest( res.e );
        VertId v3 = oldMesh.topology.dest( oldMesh.topology.next( res.e ) );
        func( id, projectionResult, v1, v2, v3 );
    },
    params.progressCb );
}
 
template<typename F>
bool projectFaceAttribute( const MeshPart& mp, const Mesh& oldMesh, F&& func, const ProjectAttributeParams& params )
{
    return BitSetParallelFor( mp.mesh.topology.getFaceIds( mp.region ), [&] ( FaceId newFaceId )
    {
        auto point = !params.xfs.rigidXfPoint ? mp.mesh.triCenter( newFaceId ) : ( *params.xfs.rigidXfPoint )( mp.mesh.triCenter( newFaceId ) );
        auto projectionResult = findProjection( point, oldMesh, FLT_MAX, params.xfs.nonRigidXfTree );
        func( newFaceId, projectionResult );
    },
    params.progressCb );
}
 
}