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Draw dense part of the spectrum as a solid mesh

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This fixes aliasing problems.
This commit is contained in:
Robbert van der Helm
2023-03-20 19:36:30 +01:00
parent 29fde14c88
commit e179734818
4 changed files with 113 additions and 26 deletions
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10
plugins/diopser/src/editor/analyzer.rs
View File

@@ -90,7 +90,7 @@ impl View for SpectrumAnalyzer {
let line_width = cx.style.dpi_factor as f32 * 1.5;
let paint = vg::Paint::color(cx.font_color().cloned().unwrap_or_default().into())
.with_line_width(line_width);
for (bin_idx, magnetude) in spectrum.iter().enumerate() {
for (bin_idx, magnitude) in spectrum.iter().enumerate() {
// We'll match up the bin's x-coordinate with the filter frequency parameter
let frequency = (bin_idx as f32 / spectrum.len() as f32) * nyquist;
// NOTE: This takes the safe-mode switch into acocunt. When it is enabled, the range is
@@ -100,11 +100,11 @@ impl View for SpectrumAnalyzer {
continue;
}
// Scale this so that 1.0/0 dBFS magnetude is at 80% of the height, the bars begin at
// Scale this so that 1.0/0 dBFS magnitude is at 80% of the height, the bars begin at
// -80 dBFS, and that the scaling is linear
nih_debug_assert!(*magnetude >= 0.0);
let magnetude_db = nih_plug::util::gain_to_db(*magnetude);
let height = ((magnetude_db + 80.0) / 100.0).clamp(0.0, 1.0);
nih_debug_assert!(*magnitude >= 0.0);
let magnitude_db = nih_plug::util::gain_to_db(*magnitude);
let height = ((magnitude_db + 80.0) / 100.0).clamp(0.0, 1.0);
let mut path = vg::Path::new();
path.move_to(

8
plugins/diopser/src/spectrum.rs
View File

@@ -131,12 +131,12 @@ impl SpectrumInput {
.iter()
.zip(&mut self.spectrum_result_buffer)
{
let magnetude = bin.norm();
if magnetude > *spectrum_result {
*spectrum_result = magnetude;
let magnitude = bin.norm();
if magnitude > *spectrum_result {
*spectrum_result = magnitude;
} else {
*spectrum_result = (*spectrum_result * self.smoothing_decay_weight)
+ (magnetude * (1.0 - self.smoothing_decay_weight));
+ (magnitude * (1.0 - self.smoothing_decay_weight));
}
}