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fix(ui): show active or stationary preview parts, not both overlapping

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Draw only one set of preview parts at a time — active (current strategy)
takes precedence over stationary (overall best). Also clears active
parts when setting new stationary parts to prevent stale previews.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-19 11:50:56 -04:00
parent fab2214149
commit ca35945c13
1 changed files with 11 additions and 21 deletions
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32
OpenNest/Controls/PlateView.cs
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@@ -506,10 +506,15 @@ namespace OpenNest.Controls
part.Draw(g, (i + 1).ToString());
}
// Draw stationary preview parts (overall best — full opacity)
for (var i = 0; i < stationaryParts.Count; i++)
// Draw preview parts — active (current strategy) takes precedence
// over stationary (overall best) to avoid overlapping fills.
var previewParts = activeParts.Count > 0 ? activeParts : stationaryParts;
var previewBrush = activeParts.Count > 0 ? ColorScheme.ActivePreviewPartBrush : ColorScheme.PreviewPartBrush;
var previewPen = activeParts.Count > 0 ? ColorScheme.ActivePreviewPartPen : ColorScheme.PreviewPartPen;
for (var i = 0; i < previewParts.Count; i++)
{
var part = stationaryParts[i];
var part = previewParts[i];
if (part.IsDirty)
part.Update(this);
@@ -518,24 +523,8 @@ namespace OpenNest.Controls
if (!path.GetBounds().IntersectsWith(viewBounds))
continue;
g.FillPath(ColorScheme.PreviewPartBrush, path);
g.DrawPath(ColorScheme.PreviewPartPen, path);
}
// Draw active preview parts (current strategy — reduced opacity)
for (var i = 0; i < activeParts.Count; i++)
{
var part = activeParts[i];
if (part.IsDirty)
part.Update(this);
var path = part.Path;
if (!path.GetBounds().IntersectsWith(viewBounds))
continue;
g.FillPath(ColorScheme.ActivePreviewPartBrush, path);
g.DrawPath(ColorScheme.ActivePreviewPartPen, path);
g.FillPath(previewBrush, path);
g.DrawPath(previewPen, path);
}
if (DrawOffset && Plate.PartSpacing > 0)
@@ -899,6 +888,7 @@ namespace OpenNest.Controls
public void SetStationaryParts(List<Part> parts)
{
stationaryParts.Clear();
activeParts.Clear();
if (parts != null)
{