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Roll up mass properties without input validation

Source: R/massprops.R
rollup_mass_props_fast.Rd

rollup_mass_props_fast() performs the same operation as rollup_mass_props() but omits input validation. It is somewhat faster than rollup_mass_props() but should be used with caution and only under circumstances in which the caller assumes responsibility for validity of input. Its behavior when passed ill-formed input is unspecified.

Usage

rollup_mass_props_fast(tree, df)

Arguments

tree

An 'igraph' tree whose vertices are named as the values of the id column of df and whose directed edges point from child id to parent id.

df

A data frame with (at least) these columns: id, mass, Cx, Cy, Cz, Ixx, Iyy, Izz, Ixy, Ixz, Iyz, POIconv, Ipoint.

Value

The updated data frame

Examples

rollup_mass_props_fast(test_tree, test_table)
#>     id parent mass Cx Cy Cz Ixx  Ixy   Ixz Iyy   Iyz Izz POIconv Ipoint
#> 1  A.1          21  0  0  0 144 -4.8 -24.8 144 -23.2 139       -  FALSE
#> 2  A.2    A.1    8  1  0  0  32 -0.4  -0.4  24   0.4  24       -  FALSE
#> 3  A.3    A.1    8 -1  0  0  32 -0.4  -0.4  24   0.4  24       -  FALSE
#> 4  C.1    A.1    5  0  0  0  80 -4.0 -24.0  80 -24.0  75       -  FALSE
#> 5  P.1    A.2    2  1  1  1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 6  P.2    A.2    2  1  1 -1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 7  P.3    A.2    2  1 -1  1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 8  P.4    A.2    2  1 -1 -1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 9  P.5    A.3    2 -1  1  1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 10 P.6    A.3    2 -1  1 -1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 11 P.7    A.3    2 -1 -1  1   4 -0.1  -0.1   4   0.1   4       -  FALSE
#> 12 P.8    A.3    2 -1 -1 -1   4 -0.1  -0.1   4   0.1   4       -  FALSE