Description Usage Arguments Value Note References Examples
Implementation of the command line tool "metro" to evaluate the difference between two triangular meshes.
1 2 3 4 5 
mesh1 
triangular mesh (object of class 'mesh3d'). 
mesh2 
triangular mesh (object of class 'mesh3d'). 
nSamples 
set the required number of samples if 0, this will be set to approx. 10x the face number. 
nSamplesArea 
set the required number of samples per area unit, override nSamples. 
vertSamp 
logical: if FALSE, disable vertex sampling. 
edgeSamp 
logical: if FALSE, disable edge sampling. 
faceSamp 
logical: if FALSE, disable face sampling. 
unrefVert 
logical: if FALSE, ignore unreferred vertices. 
samplingType 
set the face sampling mode. options are: SS (similar triangles sampling), SD (subdivision sampling), MC (montecarlo sampling). 
searchStruct 
set search structures to use. options are: SGIRD (static Uniform Grid), OCTREE, AABB (AxisAligned Bounding Box Tree), HGRID (Hashed Uniform Grid). 
from 
numeric: minimum value for color mapping. 
to 
numeric: maximum value for color mapping. 
colormeshes 
if TRUE, meshes with vertices colored according to distance are returned 
silent 
logical: if TRUE, output to console is suppressed. 
ForwardSampling, BackwardSampling 
lists containing information about forward (mesh1 to mesh2) and backward (mesh2 to mesh1) sampling with the following entries 
maxdist
maximal Hausdorff distance
meandist
mean Hausdorff distance
RMSdist
RMS of the Hausdorff distances
area
mesh area (of mesh1
in ForwardSampling
and mesh2
in BackwardSampling
)
RMSdist
RMS of the Hausdorff distances
nvbsamples
number of vertices sampled
nsamples
number of samples
distances1, distances2 
vectors containing vertex distances from mesh1 to mesh2 and mesh2 to mesh1. 
forward_hist, backward_hist 
Matrices tracking the sampling results 
if colormeshes == TRUE
mesh1, mesh2 
meshes with color coded distances and an additional entry called quality containing the sampled pervertex distances 
this is a straightforward implementation of the command line tool metro http://vcg.isti.cnr.it/vcglib/metro.html
P. Cignoni, C. Rocchini and R. Scopigno. Metro: measuring error on simplified surfaces. Computer Graphics Forum, Blackwell Publishers, vol. 17(2), June 1998, pp 167174
1 2 3 4 5 6 7 8 9 10 11 12  require(Morpho)
data(humface)
data(dummyhead)
## align humface to dummyhead.mesh
humfalign < rotmesh.onto(humface,humface.lm,dummyhead.lm)
samp < vcgMetro(humfalign$mesh,dummyhead.mesh,faceSamp=FALSE,edgeSamp=FALSE)
## create heatmap using Morpho's meshDist function
## Not run:
## create custom heatmaps based on distances
mD < meshDist(humfalign$mesh,distvec=samp$distances1)
## End(Not run)

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