bary.to.sphere.cart

Given a triangular mesh on a sphere described by mesh locations
(<code>phi</code>, <code>lambda</code>), a radius <code>R</code> and a triangulation
<code>Trt</code>, determine the Cartesian coordinates of points <code>cb</code>
given in barycentric coordinates with respect to the mesh.

Reconstructs retinae by morphing a flat surface with cuts
(a dissected flat-mount retina) onto a curvilinear surface (the
standard retinal shape). It can estimate the position of a point
on the intact adult retina to within 8 degrees of arc (3.6% of
nasotemporal axis). The coordinates in reconstructed retinae can
be transformed to visuotopic coordinates. For more details see
Sterratt, D. C., Lyngholm, D., Willshaw, D. J. and Thompson, I. D.
(2013) <doi:10.1371/journal.pcbi.1002921>.

David Sterratt

retistruct

Retinal Reconstruction Program

Daniel Lyngholm

Jan Okul

bary.to.sphere.cart function

<dl><dt>phi</dt>
<dd>Latitudes of mesh points</dd>
<dt>lambda</dt>
<dd>Longitudes of mesh points</dd>
<dt>R</dt>
<dd>Radius of sphere</dd>
<dt>Trt</dt>
<dd>Triangulation</dd>
<dt>cb</dt>
<dd>Object returned by tsearch containing information on the
triangle in which a point occurs and the barycentric coordinates
within that triangle</dd></dl>

Arguments

Author

Convert barycentric coordinates of points in mesh on sphere
to cartesian coordinates — bary.to.sphere.cart

<dl>

<dt>phi</dt>
<dd>Latitudes of mesh points</dd>


<dt>lambda</dt>
<dd>Longitudes of mesh points</dd>


<dt>R</dt>
<dd>Radius of sphere</dd>


<dt>Trt</dt>
<dd>Triangulation</dd>


<dt>cb</dt>
<dd>Object returned by tsearch containing information on the
triangle in which a point occurs and the barycentric coordinates
within that triangle</dd>

</dl>

bary.to.sphere.cart: Convert barycentric coordinates of points in mesh on sphere to cartesian coordinates

Description

Usage

Value

Arguments

Author