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Draw Diopser's spectrum analyzer in one go

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This commit is contained in:
Robbert van der Helm 2023-03-21 16:58:26 +01:00
parent c7fecd87d2
commit ba30a86b11
2 changed files with 7 additions and 3 deletions
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1
plugins/diopser/CHANGELOG.md
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@ -13,3 +13,4 @@ Versioning](https://semver.org/spec/v2.0.0.html).
- On Windows, clicking on the plugin's name no longer takes you to Spectral - On Windows, clicking on the plugin's name no longer takes you to Spectral
Compressor's home page. This is a temporary workaround for an issue with an Compressor's home page. This is a temporary workaround for an issue with an
underlying library. underlying library.
- Rendering the GUI now takes slightly less resources.

7
plugins/diopser/src/editor/analyzer.rs
View file

@ -87,9 +87,13 @@ impl View for SpectrumAnalyzer {
let nyquist = self.sample_rate.load(Ordering::Relaxed) / 2.0; let nyquist = self.sample_rate.load(Ordering::Relaxed) / 2.0;
// This skips background and border drawing // This skips background and border drawing
// NOTE: We could do the same thing like in Spectral Compressor and draw part of this
// spectrum analyzer as a single mesh but for whatever erason the aliasing/moire
// pattern here doesn't look nearly as bad.
let line_width = cx.style.dpi_factor as f32 * 1.5; let line_width = cx.style.dpi_factor as f32 * 1.5;
let paint = vg::Paint::color(cx.font_color().cloned().unwrap_or_default().into()) let paint = vg::Paint::color(cx.font_color().cloned().unwrap_or_default().into())
.with_line_width(line_width); .with_line_width(line_width);
let mut path = vg::Path::new();
for (bin_idx, magnitude) 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 // 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; let frequency = (bin_idx as f32 / spectrum.len() as f32) * nyquist;
@ -106,14 +110,13 @@ impl View for SpectrumAnalyzer {
let magnitude_db = nih_plug::util::gain_to_db(*magnitude); let magnitude_db = nih_plug::util::gain_to_db(*magnitude);
let height = ((magnitude_db + 80.0) / 100.0).clamp(0.0, 1.0); let height = ((magnitude_db + 80.0) / 100.0).clamp(0.0, 1.0);
let mut path = vg::Path::new();
path.move_to( path.move_to(
bounds.x + (bounds.w * t), bounds.x + (bounds.w * t),
bounds.y + (bounds.h * (1.0 - height)), bounds.y + (bounds.h * (1.0 - height)),
); );
path.line_to(bounds.x + (bounds.w * t), bounds.y + bounds.h); path.line_to(bounds.x + (bounds.w * t), bounds.y + bounds.h);
}
canvas.stroke_path(&mut path, &paint); canvas.stroke_path(&mut path, &paint);
} }
}
} }