migrations/egui
1
0
Fork 0
mirror of https://github.com/emilk/egui.git synced 2026-08-30 13:20:05 -04:00
Code Activity

Add anchored text rotation method, and clarify related docs (#7130)

Browse Source 
Add a helper method to perform rotation about a specified anchor.

* Closes #7051
This commit is contained in:
Patrick Marks
2025-06-16 01:42:01 +02:00
committed by GitHub
parent f33ff2c83d
commit df2c16ef0a
3 changed files with 116 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
crates/epaint/src/shapes/text_shape.rs
View File

@@ -1,5 +1,7 @@
use std::sync::Arc;
use emath::{Align2, Rot2};
use crate::*;
/// How to paint some text on screen.
@@ -78,7 +80,7 @@ impl TextShape {
self
}
/// Rotate text by this many radians clockwise.
/// Set text rotation to `angle` radians clockwise.
/// The pivot is `pos` (the upper left corner of the text).
#[inline]
pub fn with_angle(mut self, angle: f32) -> Self {
@@ -86,6 +88,17 @@ impl TextShape {
self
}
/// Set the text rotation to the `angle` radians clockwise.
/// The pivot is determined by the given `anchor` point on the text bounding box.
#[inline]
pub fn with_angle_and_anchor(mut self, angle: f32, anchor: Align2) -> Self {
self.angle = angle;
let a0 = anchor.pos_in_rect(&self.galley.rect).to_vec2();
let a1 = Rot2::from_angle(angle) * a0;
self.pos += a0 - a1;
self
}
/// Render text with this opacity in gamma space
#[inline]
pub fn with_opacity_factor(mut self, opacity_factor: f32) -> Self {