georegression.fitting.sphere.SphereToPointSignedDistance_F64 Maven / Gradle / Ivy
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GeoRegression is a free Java based geometry library for scientific computing in fields such as robotics and computer vision with a focus on 2D/3D space.
/*
* Copyright (C) 2011-2015, Peter Abeles. All Rights Reserved.
*
* This file is part of Geometric Regression Library (GeoRegression).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package georegression.fitting.sphere;
import georegression.metric.Distance3D_F64;
import georegression.struct.point.Point3D_F64;
import georegression.struct.shapes.Sphere3D_F64;
import org.ddogleg.optimization.functions.FunctionNtoM;
import java.util.List;
/**
* Computes the signed Euclidean distance between a sphere and a set of points, see
* {@link Distance3D_F64#distance(georegression.struct.shapes.Sphere3D_F64, georegression.struct.point.Point3D_F64)}.
*
* See {@link georegression.fitting.sphere.CodecSphere3D_F64} for how the model is parametrized.
* For use in least-squares non-linear minimization.
*
* @author Peter Abeles
*/
public class SphereToPointSignedDistance_F64 implements FunctionNtoM {
// model of the sphere
private Sphere3D_F64 sphere = new Sphere3D_F64();
// points whose distance from the sphere is being computed
private List points;
// used to convert double[] into shape parameters
private CodecSphere3D_F64 codec = new CodecSphere3D_F64();
public void setPoints(List points) {
this.points = points;
}
@Override
public int getNumOfInputsN() {
return 4;
}
@Override
public int getNumOfOutputsM() {
return points.size();
}
@Override
public void process( /**/double[] input, /**/double[] output) {
codec.decode(input,sphere);
for( int i = 0; i < points.size(); i++ ) {
output[i] = Distance3D_F64.distance(sphere,points.get(i));
}
}
}