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Round document alignment in viewport to avoid AA induced by a shift after zooming in and panning (#921)

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This commit is contained in:
0HyperCube
2022-12-28 12:06:06 +00:00
committed by Keavon Chambers
parent 0c9f457866
commit 002b0fc1dd
3 changed files with 9 additions and 5 deletions
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editor/src/messages/portfolio/document/navigation/navigation_message_handler.rs
+6 -2
View File
@@ -307,11 +307,15 @@ impl NavigationMessageHandler {
}
pub fn calculate_offset_transform(&self, offset: DVec2) -> DAffine2 {
// Try to avoid fractional coordinates to reduce anti aliasing.
let scale = self.snapped_scale();
let rounded_pan = ((self.pan + offset) * scale).round() / scale - offset;
// TODO: replace with DAffine2::from_scale_angle_translation and fix the errors
let offset_transform = DAffine2::from_translation(offset);
let scale_transform = DAffine2::from_scale(DVec2::splat(self.snapped_scale()));
let scale_transform = DAffine2::from_scale(DVec2::splat(scale));
let angle_transform = DAffine2::from_angle(self.snapped_angle());
let translation_transform = DAffine2::from_translation(self.pan);
let translation_transform = DAffine2::from_translation(rounded_pan);
scale_transform * offset_transform * angle_transform * translation_transform
}