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47 lines
2.3 KiB
C++
47 lines
2.3 KiB
C++
// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
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#pragma once
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#include "nvmath.h" // NV_EPSILON
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#include "Vector.h"
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#include "Plane.h"
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namespace nv
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{
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namespace Fit
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{
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Vector3 computeCentroid(int n, const Vector3 * points);
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Vector3 computeCentroid(int n, const Vector3 * points, const float * weights, const Vector3 & metric);
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Vector4 computeCentroid(int n, const Vector4 * points);
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Vector4 computeCentroid(int n, const Vector4 * points, const float * weights, const Vector4 & metric);
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Vector3 computeCovariance(int n, const Vector3 * points, float * covariance);
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Vector3 computeCovariance(int n, const Vector3 * points, const float * weights, const Vector3 & metric, float * covariance);
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Vector4 computeCovariance(int n, const Vector4 * points, float * covariance);
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Vector4 computeCovariance(int n, const Vector4 * points, const float * weights, const Vector4 & metric, float * covariance);
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Vector3 computePrincipalComponent_PowerMethod(int n, const Vector3 * points);
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Vector3 computePrincipalComponent_PowerMethod(int n, const Vector3 * points, const float * weights, const Vector3 & metric);
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Vector3 computePrincipalComponent_EigenSolver(int n, const Vector3 * points);
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Vector3 computePrincipalComponent_EigenSolver(int n, const Vector3 * points, const float * weights, const Vector3 & metric);
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Vector4 computePrincipalComponent_EigenSolver(int n, const Vector4 * points);
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Vector4 computePrincipalComponent_EigenSolver(int n, const Vector4 * points, const float * weights, const Vector4 & metric);
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Vector3 computePrincipalComponent_SVD(int n, const Vector3 * points);
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Vector4 computePrincipalComponent_SVD(int n, const Vector4 * points);
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Plane bestPlane(int n, const Vector3 * points);
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bool isPlanar(int n, const Vector3 * points, float epsilon = NV_EPSILON);
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bool eigenSolveSymmetric3(const float matrix[6], float eigenValues[3], Vector3 eigenVectors[3]);
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bool eigenSolveSymmetric4(const float matrix[10], float eigenValues[4], Vector4 eigenVectors[4]);
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// Returns number of clusters [1-4].
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int compute4Means(int n, const Vector3 * points, const float * weights, const Vector3 & metric, Vector3 * cluster);
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}
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} // nv namespace
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