C++ (Cpp) CentroidPoint Examples

Example #1

File: Geometry.cpp Project: barrycug/xlibspatialite

/*public*/
bool
Geometry::getCentroid(Coordinate& ret) const
{
	if ( isEmpty() ) { return false; }

	Coordinate c;

	int dim=getDimension();
	if(dim==0) {
		CentroidPoint cent; 
		cent.add(this);
		if ( ! cent.getCentroid(c) )
				return false;
	} else if (dim==1) {
		CentroidLine cent;
		cent.add(this);
		if ( ! cent.getCentroid(c) ) 
			return false;
	} else {
		CentroidArea cent;
		cent.add(this);
		if ( ! cent.getCentroid(c) )
			return false;
	}

	getPrecisionModel()->makePrecise(c);
	ret=c;

	return true;
}

Example #2

File: test_centroid.cpp Project: BITVoyager/pcl

TEST (PCL, CentroidPoint)
{
  PointXYZ p1; p1.getVector3fMap () << 1, 2, 3;
  PointXYZ p2; p2.getVector3fMap () << 3, 2, 1;
  PointXYZ p3; p3.getVector3fMap () << 5, 5, 5;

  // Zero points (get should have no effect)
  {
    CentroidPoint<PointXYZ> centroid;
    PointXYZ c (100, 100, 100);
    centroid.get (c);
    EXPECT_XYZ_EQ (PointXYZ (100, 100, 100), c);
  }
  // Single point
  {
    CentroidPoint<PointXYZ> centroid;
    centroid.add (p1);
    PointXYZ c;
    centroid.get (c);
    EXPECT_XYZ_EQ (p1, c);
  }
  // Multiple points
  {
    CentroidPoint<PointXYZ> centroid;
    centroid.add (p1);
    centroid.add (p2);
    centroid.add (p3);
    PointXYZ c;
    centroid.get (c);
    EXPECT_XYZ_EQ (PointXYZ (3, 3, 3), c);
  }

  // Retrieve centroid into a different point type
  {
    CentroidPoint<PointXYZ> centroid;
    centroid.add (p1);
    PointXYZRGB c; c.rgba = 0x00FFFFFF;
    centroid.get (c);
    EXPECT_XYZ_EQ (p1, c);
    EXPECT_EQ (0x00FFFFFF, c.rgba);
  }

  // Centroid with XYZ and RGB
  {
    PointXYZRGB cp1; cp1.getVector3fMap () << 4, 2, 4; cp1.rgba = 0xFF330000;
    PointXYZRGB cp2; cp2.getVector3fMap () << 2, 4, 2; cp2.rgba = 0xFF003300;
    PointXYZRGB cp3; cp3.getVector3fMap () << 3, 3, 3; cp3.rgba = 0xFF000033;
    CentroidPoint<PointXYZRGB> centroid;
    centroid.add (cp1);
    centroid.add (cp2);
    centroid.add (cp3);
    PointXYZRGB c;
    centroid.get (c);
    EXPECT_XYZ_EQ (PointXYZ (3, 3, 3), c);
    EXPECT_EQ (0xFF111111, c.rgba);
  }

  // Centroid with normal and curavture
  {
    Normal np1; np1.getNormalVector4fMap () << 1, 0, 0, 0; np1.curvature = 0.2;
    Normal np2; np2.getNormalVector4fMap () << -1, 0, 0, 0; np2.curvature = 0.1;
    Normal np3; np3.getNormalVector4fMap () << 0, 1, 0, 0; np3.curvature = 0.9;
    CentroidPoint<Normal> centroid;
    centroid.add (np1);
    centroid.add (np2);
    centroid.add (np3);
    Normal c;
    centroid.get (c);
    EXPECT_NORMAL_EQ (np3, c);
    EXPECT_FLOAT_EQ (0.4, c.curvature);
  }

  // Centroid with XYZ and intensity
  {
    PointXYZI ip1; ip1.getVector3fMap () << 1, 2, 3; ip1.intensity = 0.8;
    PointXYZI ip2; ip2.getVector3fMap () << 3, 2, 1; ip2.intensity = 0.2;
    PointXYZI ip3; ip3.getVector3fMap () << 5, 5, 5; ip3.intensity = 0.2;
    CentroidPoint<PointXYZI> centroid;
    centroid.add (ip1);
    centroid.add (ip2);
    centroid.add (ip3);
    PointXYZI c;
    centroid.get (c);
    EXPECT_XYZ_EQ (PointXYZ (3, 3, 3), c);
    EXPECT_FLOAT_EQ (0.4, c.intensity);
  }

  // Centroid with label
  {
    Label lp1; lp1.label = 1;
    Label lp2; lp2.label = 1;
    Label lp3; lp3.label = 2;
    CentroidPoint<Label> centroid;
    centroid.add (lp1);
    centroid.add (lp2);
    centroid.add (lp3);
    Label c;
    centroid.get (c);
    EXPECT_EQ (1, c.label);
  }
}