Signed Distance Point To Mesh

Example of usage to get signed distance from point to mesh

• C++

  #include "MRMesh/MRMeshLoad.h"
  #include "MRMesh/MRMeshProject.h"
  #include "MRMesh/MRMesh.h"
  #include <iostream>
   
  int main()
  {
      auto mesh1Res = MR::MeshLoad::fromAnySupportedFormat( "mesh1.ctm" );
      if ( !mesh1Res.has_value() )
      {
          std::cerr << mesh1Res.error();
          return 1;
      }
      auto point = MR::Vector3f( 1.5f, 1.0f, 0.5f );
   
      auto dist = MR::findSignedDistance( point, *mesh1Res );
      if ( dist )
          std::cout << "Signed distance from point to mesh " << dist->dist << "\n";
      return 0;
  }

• Python

  from meshlib import mrmeshpy
   
  mesh = mrmeshpy.loadMesh("mesh1.ctm")
  point = mrmeshpy.Vector3f(1.5, 1, 0.5)
   
  a = mrmeshpy.findSignedDistance(point, mesh)
  print(f"Signed distance from point to mesh {a.dist}")

• C

  #include <MRCMesh/MRMesh.h>
  #include <MRCMesh/MRMeshPart.h>
  #include <MRCMesh/MRMeshLoad.h>
  #include <MRCMesh/MRMeshProject.h>
  #include <MRCMisc/std_string.h>
  #include <MRCMisc/expected_MR_Mesh_std_string.h>
  #include <MRCMisc/std_optional_MR_SignedDistanceToMeshResult.h>
   
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
   
  int main( void )
  {
      int rc = EXIT_FAILURE;
   
      // Load mesh.
      MR_expected_MR_Mesh_std_string* meshRes = MR_MeshLoad_fromAnySupportedFormat_2( "mesh.ctm", NULL, NULL );
      MR_Mesh* mesh = MR_expected_MR_Mesh_std_string_GetMutableValue( meshRes );
      if ( !mesh )
      {
          fprintf( stderr, "Failed to load mesh: %s\n", MR_std_string_Data( MR_expected_MR_Mesh_std_string_GetError( meshRes ) ) );
          goto fail_load;
      }
   
      MR_Vector3f point = MR_Vector3f_Construct_3( 1.5f, 1.0f, 0.5f );
      MR_MeshPart* mp = MR_MeshPart_Construct( mesh, NULL );
   
      MR_std_optional_MR_SignedDistanceToMeshResult* resOpt = MR_findSignedDistance_MR_Vector3f( &point, mp, NULL, NULL );
      MR_SignedDistanceToMeshResult* res = MR_std_optional_MR_SignedDistanceToMeshResult_MutableValue( resOpt );
      if ( res )
          fprintf( stdout, "Signed distance from point to mesh: %f\n", *MR_SignedDistanceToMeshResult_Get_dist( res ) );
   
      rc = EXIT_SUCCESS;
   
      MR_std_optional_MR_SignedDistanceToMeshResult_Destroy( resOpt );
      MR_MeshPart_Destroy( mp );
  fail_load:
      MR_expected_MR_Mesh_std_string_Destroy( meshRes );
      return rc;
  }