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Draw GR overlay as a single path with no AA

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With these settings the high end parts at least look much cleaner.
This commit is contained in:
Robbert van der Helm 2023-03-21 17:10:03 +01:00
parent ba30a86b11
commit 9f5d1dcf57
1 changed files with 12 additions and 6 deletions
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18
plugins/spectral_compressor/src/editor/analyzer.rs
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@ -28,6 +28,10 @@ const LN_40_HZ: f32 = 3.4011974; // 30.0f32.ln();
const LN_22_KHZ: f32 = 9.998797; // 22000.0f32.ln();
const LN_FREQ_RANGE: f32 = LN_22_KHZ - LN_40_HZ;
/// The color used for drawing the overlay. Currently not configurable using the style sheet (that
/// would be possible by moving this to a dedicated view and overlaying that).
const GR_BAR_OVERLAY_COLOR: vg::Color = vg::Color::rgbaf(0.7, 0.9, 1.0, 0.7);
/// A very analyzer showing the envelope followers as a magnitude spectrum with an overlay for the
/// gain reduction.
pub struct Analyzer {
@ -240,13 +244,15 @@ fn draw_gain_reduction(
) {
let bounds = cx.bounds();
// TODO: This color should be defined elsewhere
let bar_paint_color = vg::Color::rgbaf(0.7, 0.9, 1.0, 0.7);
let bar_paint = vg::Paint::color(bar_paint_color);
// As with the above, anti aliasing only causes issues
let paint = vg::Paint::color(GR_BAR_OVERLAY_COLOR).with_anti_alias(false);
let bin_frequency = |bin_idx: f32| (bin_idx / analyzer_data.num_bins as f32) * nyquist_hz;
// TODO: This should be drawn as one mesh, or multiple meshes if there are empty gain reduction bars
// TODO: This should be drawn as one mesh, or multiple meshes if there are empty gain reduction
// bars. The leftmost bin should be extended to the left of the analyzer, and the
// rightmost bin should be extended to the right.
let mut path = vg::Path::new();
for (bin_idx, gain_difference_db) in analyzer_data
.gain_difference_db
.iter()
@ -273,13 +279,13 @@ fn draw_gain_reduction(
// TODO: The y-position should be relative to the target curve
let t_y = ((-gain_difference_db + 40.0) / 80.0).clamp(0.0, 1.0);
let mut path = vg::Path::new();
path.move_to(bounds.x + (bounds.w * t_start), bounds.y + (bounds.h * 0.5));
path.line_to(bounds.x + (bounds.w * t_end), bounds.y + (bounds.h * 0.5));
path.line_to(bounds.x + (bounds.w * t_end), bounds.y + (bounds.h * t_y));
path.line_to(bounds.x + (bounds.w * t_start), bounds.y + (bounds.h * t_y));
path.close();
canvas.fill_path(&mut path, &bar_paint);
}
}
canvas.fill_path(&mut path, &paint);
}