remove all parts of a triangular mesh, not visible from a set of viewpoints
remove all parts of a triangular mesh, not visible from a set of viewpoints
virtualMeshScan(x, viewpoints, offset = 0.001, cores = 1)
x |
triangular mesh of class 'mesh3d' |
viewpoints |
vector or k x 3 matrix containing a set of viewpoints |
offset |
value to generate an offset at the meshes surface (see notes) |
cores |
integer: number of cores to use (not working on windows) |
returns a list containing subsets of the original mesh
visible |
the parts visible from at least one of the viewpoints |
invisible |
the parts not visible from the viewpoints |
The function tries to filter out all vertices where the line connecting each vertex with the viewpoints intersects with the mesh itself. As, technically speaking this always occurs at a distance of value=0, a mesh with a tiny offset is generated to avoid these false hits.
SCP1 <- file2mesh(system.file("extdata","SCP1.ply",package="Morpho"))
viewpoints <- read.fcsv(system.file("extdata","SCP1_Endo.fcsv",package="Morpho"))
## Create a quick endocast
quickEndo <- virtualMeshScan(SCP1,viewpoints)
## Not run:
rgl::shade3d(quickEndo$visible,col="orange")
rgl::shade3d(SCP1,col="white",alpha=0.5)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.