polyscope_core/
pick.rs

1//! Picking and selection system.
2
3use glam::Vec3;
4
5/// Result of a pick/selection operation.
6#[derive(Debug, Clone)]
7pub struct PickResult {
8    /// The type of structure that was picked.
9    pub structure_type: String,
10
11    /// The name of the structure that was picked.
12    pub structure_name: String,
13
14    /// The index of the element that was picked (vertex, face, etc.).
15    pub element_index: usize,
16
17    /// The world position of the pick point.
18    pub world_position: Vec3,
19
20    /// The depth of the pick point.
21    pub depth: f32,
22}
23
24impl PickResult {
25    /// Creates a new pick result.
26    pub fn new(
27        structure_type: impl Into<String>,
28        structure_name: impl Into<String>,
29        element_index: usize,
30        world_position: Vec3,
31        depth: f32,
32    ) -> Self {
33        Self {
34            structure_type: structure_type.into(),
35            structure_name: structure_name.into(),
36            element_index,
37            world_position,
38            depth,
39        }
40    }
41}
42
43/// Trait for objects that support picking/selection.
44pub trait Pickable {
45    /// Encodes this object's pick data into a color.
46    fn encode_pick_color(&self, element_index: usize) -> [u8; 4];
47
48    /// Decodes a pick color back to an element index.
49    fn decode_pick_color(&self, color: [u8; 4]) -> Option<usize>;
50
51    /// Returns the total number of pickable elements.
52    fn num_pickable_elements(&self) -> usize;
53}
polyscope_core/pick.rs

polyscope_core/
pick.rs
