Exemplos de closest_on_line em C++ (Cpp)

Exemplo n.º 1

Arquivo: PST_Data.cpp Projeto: chrismullins/cgma

double PST_Edge::closest_on_edge( const CubitVector& p )
{
  double t = closest_on_line( p );
  if( t < 0.0 )
    t = 0.0;
  else if( t > 1.0 )
    t = 1.0;
  return t;
}

Exemplo n.º 2

Arquivo: Collision.cpp Projeto: Fliper12/darkbasicpro

static D3DXVECTOR3 closest_on_poly ( const D3DXVECTOR3& p, D3DXVECTOR3* line_dir )
{
    D3DXVECTOR3 v [ 32 ];
    float d [ 32 ];

    for ( int i = 0; i < cache.count - 1; i++ )
	{
        v [ i ] = closest_on_line ( cache.vertex [ i ], cache.vertex [ i + 1 ], p );

        D3DXVECTOR3 t = p - v [ i ];
        
		d [ i ] = D3DXVec3Length ( &t );
    }

    i = cache.count-1;

    v [ i ] = closest_on_line ( cache.vertex [ i ], cache.vertex [ 0 ], p );
    
	D3DXVECTOR3 t = p - v [ i ];

    d [ i ] = D3DXVec3Length ( &t );

    float min = d [ 0 ];
    D3DXVECTOR3 r = v [ 0 ];
	int cl_line = 0;

    for ( i = 1; i < cache.count; i++ ) 
	{
        if ( d [ i ] < min )
		{
            min     = d [ i ];
            r       = v [ i ];
			cl_line = i;
        }
    }

	// calculate direction vector of closest line
	if ( cl_line < cache.count - 1)  
		*line_dir = cache.vertex [ cl_line + 1 ] - cache.vertex [ cl_line ];
	else
		*line_dir = cache.vertex [ 0 ] - cache.vertex [ cl_line ];

    return r;
}

Exemplo n.º 3

Arquivo: PST_Data.cpp Projeto: chrismullins/cgma

double PST_Edge::closest_on_line( const CubitVector& B2, 
                                  const CubitVector& M2 )
{
  CubitVector B1 = start_coord();
  CubitVector M1 = direction();
  
  if( M1.length_squared() < RESABS_SQR )
    return 0.0;
  
  if( M2.length_squared() < RESABS_SQR )
    return closest_on_line( B2 );
  
  CubitVector cross = M2 * M1;
  if( cross.length_squared() < CUBIT_RESABS ) //parallel
    return 0.0;
  
  CubitVector N = M2 * cross;
  double      D = -( N % B2 );
  return -( N % B1 + D ) / ( N % M1 );
}