Compute the Spatial Bounds (Bounding Box) of a 3D Mesh

Computes the minimum and maximum coordinates of the vertices of a 3D mesh, returning a matrix with the extreme values along the X, Y, and Z axes.

Usage

bbox(x)

Arguments

x

A mesh3d object containing the mesh vertices in the vb component.

Value

A matrix with 3 rows and 2 columns containing the minimum and maximum coordinate values of the mesh vertices:

• Each row corresponds to an axis (X, Y, Z).

• The first column (min) contains the minimum values.

• The second column (max) contains the maximum values.

Details

Internally, the function converts homogeneous coordinates in x$vb to Euclidean coordinates using rgl::asEuclidean2(), and computes per-axis ranges using apply(..., range).

See also

rgl::asEuclidean2()

Examples

# Create a cubic mesh
cube <- rgl::cube3d()

# Compute its bounding box
bbox(cube)
#>   min max
#> X  -1   1
#> Y  -1   1
#> Z  -1   1