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Plot boxed zoom #1188

Merged
merged 8 commits into from
Feb 2, 2022
Merged

Plot boxed zoom #1188

merged 8 commits into from
Feb 2, 2022

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nongiach
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Hello,

Very happy to make my first contribution here!

This adds boxed zooming feature on plots.
demo: https://www.youtube.com/watch?v=oUSWUgdFBCs

To allow the feature to work I added:

  • Plot::allow_boxed_zoom(bool). Default true
  • Plot::boxed_zoom_pointer(PointerButton). Default: Secondary
  • PlotMemory::last_click_pos_for_zoom: Option<Pos2>, Default None
  • ScreenTransform::bounds_mut(&mut self) -> &mut PlotBounds

Also changelog has been updated, check.sh is passing. And next time I will make sure to create an issue first.

I had a little non related issue in check.sh so double check for me please.

Regards,

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@emilk emilk left a comment

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Nice! Please add instructions for this in the "Instructions" tab in the pot demo. It would also be good to document in the docstring for Plot.

CHANGELOG.md Outdated Show resolved Hide resolved
egui/src/widgets/plot/mod.rs Outdated Show resolved Hide resolved
egui/src/widgets/plot/mod.rs Outdated Show resolved Hide resolved
egui/src/widgets/plot/mod.rs Show resolved Hide resolved
@Bromeon
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Bromeon commented Jan 31, 2022

This is a great feature! 👍

I wonder, if instead of a bool yes/no, it would make sense to have different modes?

enum RegionZoom {
   None,     // disallow
   Rect,     // rect/box, like current PR
   XRange,   // only horizontal, along X axis
   YRange,   // only vertical, along Y axis
}

The X/Y ones are for scaling only along one axis:

zoom

@nongiach
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@emilk tests are passing my side, I updated with all your comments.
Let me know if we need additional update on this.

👍

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@emilk emilk left a comment

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awesome!

@emilk emilk merged commit 869d556 into emilk:master Feb 2, 2022
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3 participants