makepad_platform/
draw_matrix.rs

1#![allow(dead_code)]
2use {
3    crate::{
4        makepad_math::Mat4,
5        id_pool::*,
6    }
7};
8
9#[derive(Debug)]
10pub struct DrawMatrix(PoolId);
11
12#[derive(Default, Clone, Debug, PartialEq, Copy, Hash, Ord, PartialOrd, Eq)]
13pub struct DrawMatrixId(usize, u64);
14
15#[derive(Default)]
16pub struct CxDrawMatrix{
17    parent: DrawMatrixId,
18    parent_version: u64,
19    
20    local_version: u64,
21    local: Mat4,
22    
23    object_to_world: Mat4,
24    world_to_object: Option<Mat4>
25}
26
27impl DrawMatrixId{
28    pub fn index(&self)->usize{self.0}
29    pub fn generation(&self)->u64{self.1}
30}
31
32impl DrawMatrix {
33    pub fn id(&self) -> DrawMatrixId {DrawMatrixId(self.0.id, self.0.generation)}
34    pub fn identity()->DrawMatrixId{
35        DrawMatrixId(0, 0)
36    }
37}
38
39pub struct CxDrawMatrixPool{
40    pool: IdPool<CxDrawMatrix>,
41    identity: DrawMatrix
42}
43
44impl Default for CxDrawMatrixPool{
45    fn default()->Self{
46        let mut pool = IdPool::default();
47        let identity = DrawMatrix(pool.alloc());
48        
49        return Self{
50            pool,
51            identity
52        }
53    }
54}
55
56impl CxDrawMatrixPool {
57    pub fn alloc(&mut self) -> DrawMatrix {
58        DrawMatrix(self.pool.alloc())
59    }
60    
61    pub fn update_local(&mut self, index:DrawMatrixId, new_mat:&Mat4){
62        let d = &mut self.pool.pool[index.0];
63        if d.local != *new_mat{
64            d.local_version += 1;
65            d.local = *new_mat;
66        }
67    }
68    
69    pub fn update_parent(&mut self, index:DrawMatrixId){
70        fn update_parent(_index:usize, _pool:&mut Vec<IdPoolItem<CxDrawMatrix>>){
71            
72        }
73        update_parent(index.0, &mut self.pool.pool);
74        let d = &mut self.pool.pool[index.0];
75        if d.parent.0 != 0{ // not the identity
76           // self.update_parent(d.parent);
77            // ok now we compare the parent version to our parent version
78           // if self.pool.pool[index.0].parent_version != 
79           //    self.pool.pool[]
80        }
81    }
82    
83    /*pub fn get_object_to_world(&mut self, index:DrawMatrixId)->&Mat4{
84        // ok this on demand updates the matrix stack
85        
86    }*/
87}
88
89impl std::ops::Index<DrawMatrixId> for CxDrawMatrixPool {
90    
91    type Output = CxDrawMatrix;
92    fn index(&self, index: DrawMatrixId) -> &Self::Output {
93        let d = &self.pool.pool[index.0];
94        if d.generation != index.1 {
95            error!("MatrixNode id generation wrong {} {} {}", index.0, d.generation, index.1)
96        }
97        &d.item
98    }
99}
100
101impl std::ops::IndexMut<DrawMatrixId> for CxDrawMatrixPool {
102    fn index_mut(&mut self, index: DrawMatrixId) -> &mut Self::Output {
103        let d = &mut self.pool.pool[index.0];
104        if d.generation != index.1 {
105            error!("MatrixNode id generation wrong {} {} {}", index.0, d.generation, index.1)
106        }
107        &mut d.item
108        
109    }
110}
111
makepad_platform/draw_matrix.rs

makepad_platform/
draw_matrix.rs
