reparameterize()

void MayaFlux::Kinesis::CurveEvaluator::reparameterize	(	const Eigen::MatrixXd &	points,
		Eigen::Index	num_samples,
		Eigen::MatrixXd &	out
	)

Resample a polyline to uniform arc length into a caller-owned matrix.

Parameters

points	MxN matrix, columns are sequential points.
num_samples	Output column count, at least 2.
out	Resized to rows(points) x num_samples and overwritten.

Boundary overload. Transposes in, wraps reparameterize_planar, transposes out.

Definition at line 839 of file MotionCurves.cpp.

{
    const auto dim = static_cast<size_t>(points.rows());
    const auto n = static_cast<size_t>(points.cols());
 
    m_planar.resize(dim * n);
    const double* src = points.data();
 
    for (size_t d = 0; d < dim; ++d) {
        double* row = m_planar.data() + d * n;
        for (size_t i = 0; i < n; ++i) {
            row[i] = src[d + i * dim];
        }
    }
 
    reparameterize_planar(m_planar, dim, points.cols(), num_samples, m_planar_alt);
 
    const auto samples = m_planar_alt.size() / std::max<size_t>(dim, 1);
    out.resize(points.rows(), static_cast<Eigen::Index>(samples));
 
    double* dst = out.data();
    for (size_t d = 0; d < dim; ++d) {
        const double* row = m_planar_alt.data() + d * samples;
        for (size_t i = 0; i < samples; ++i) {
            dst[d + i * dim] = row[i];
        }
    }
}

References points.

Referenced by MayaFlux::Kinesis::reparameterize_by_arc_length().

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