Function libvips::ops::mask_ideal_ring

pub fn mask_ideal_ring(
    width: i32, 
    height: i32, 
    frequency_cutoff: f64, 
    ringwidth: f64
) -> Result<VipsImage>

VipsMaskIdealRing (mask_ideal_ring), make an ideal ring filter width: i32 -> Image width in pixels min: 1, max: 10000000, default: 1 height: i32 -> Image height in pixels min: 1, max: 10000000, default: 1 frequency_cutoff: f64 -> Frequency cutoff min: 0, max: 1000000, default: 0.5 ringwidth: f64 -> Ringwidth min: 0, max: 1000000, default: 0.5 returns VipsImage - Output image