Tests if shapes are (likely) developping clockwise or anticlockwise

Tests if shapes are (likely) developping clockwise or anticlockwise

Usage

coo_likely_clockwise(coo)

# S3 method for default
coo_likely_clockwise(coo)

# S3 method for Coo
coo_likely_clockwise(coo)

coo_likely_anticlockwise(coo)

Arguments

coo

matrix of (x; y) coordinates or any Coo object.

Value

a single or a vector of logical.

See also

Other coo_ utilities: coo_aligncalliper(), coo_alignminradius(), coo_alignxax(), coo_align(), coo_baseline(), coo_bookstein(), coo_boundingbox(), coo_calliper(), coo_centdist(), coo_center(), coo_centpos(), coo_close(), coo_down(), coo_dxy(), coo_extract(), coo_flipx(), coo_force2close(), coo_interpolate(), coo_is_closed(), coo_jitter(), coo_left(), coo_nb(), coo_perim(), coo_range(), coo_rev(), coo_right(), coo_rotatecenter(), coo_rotate(), coo_sample_prop(), coo_samplerr(), coo_sample(), coo_scale(), coo_shearx(), coo_slice(), coo_slidedirection(), coo_slidegap(), coo_slide(), coo_smoothcurve(), coo_smooth(), coo_template(), coo_trans(), coo_trimbottom(), coo_trimtop(), coo_trim(), coo_untiltx(), coo_up(), is_equallyspacedradii()

Examples

shapes[4] %>% coo_sample(64) %>% coo_plot()  #clockwise cat

shapes[4] %>% coo_likely_clockwise()
#> [1] TRUE
shapes[4] %>% coo_rev() %>% coo_likely_clockwise()
#> [1] FALSE

# on Coo
shapes %>% coo_likely_clockwise %>% `[`(4)
#>  cat 
#> TRUE