makepad_platform/
draw_matrix.rs

1#![allow(dead_code)]
2use {
3    crate::{
4        makepad_math::Mat4,
5        makepad_error_log::*,
6        id_pool::*,
7    }
8};
9
10#[derive(Debug)]
11pub struct DrawMatrix(PoolId);
12
13#[derive(Default, Clone, Debug, PartialEq, Copy, Hash, Ord, PartialOrd, Eq)]
14pub struct DrawMatrixId(usize, u64);
15
16#[derive(Default)]
17pub struct CxDrawMatrix{
18    parent: DrawMatrixId,
19    parent_version: u64,
20    
21    local_version: u64,
22    local: Mat4,
23    
24    object_to_world: Mat4,
25    world_to_object: Option<Mat4>
26}
27
28impl DrawMatrixId{
29    pub fn index(&self)->usize{self.0}
30    pub fn generation(&self)->u64{self.1}
31}
32
33impl DrawMatrix {
34    pub fn id(&self) -> DrawMatrixId {DrawMatrixId(self.0.id, self.0.generation)}
35    pub fn identity()->DrawMatrixId{
36        DrawMatrixId(0, 0)
37    }
38}
39
40pub struct CxDrawMatrixPool{
41    pool: IdPool<CxDrawMatrix>,
42    identity: DrawMatrix
43}
44
45impl Default for CxDrawMatrixPool{
46    fn default()->Self{
47        let mut pool = IdPool::default();
48        let identity = DrawMatrix(pool.alloc());
49        
50        return Self{
51            pool,
52            identity
53        }
54    }
55}
56
57impl CxDrawMatrixPool {
58    pub fn alloc(&mut self) -> DrawMatrix {
59        DrawMatrix(self.pool.alloc())
60    }
61    
62    pub fn update_local(&mut self, index:DrawMatrixId, new_mat:&Mat4){
63        let d = &mut self.pool.pool[index.0];
64        if d.local != *new_mat{
65            d.local_version += 1;
66            d.local = *new_mat;
67        }
68    }
69    
70    pub fn update_parent(&mut self, index:DrawMatrixId){
71        fn update_parent(_index:usize, _pool:&mut Vec<IdPoolItem<CxDrawMatrix>>){
72            
73        }
74        update_parent(index.0, &mut self.pool.pool);
75        let d = &mut self.pool.pool[index.0];
76        if d.parent.0 != 0{ // not the identity
77           // self.update_parent(d.parent);
78            // ok now we compare the parent version to our parent version
79           // if self.pool.pool[index.0].parent_version != 
80           //    self.pool.pool[]
81        }
82    }
83    
84    /*pub fn get_object_to_world(&mut self, index:DrawMatrixId)->&Mat4{
85        // ok this on demand updates the matrix stack
86        
87    }*/
88}
89
90impl std::ops::Index<DrawMatrixId> for CxDrawMatrixPool {
91    
92    type Output = CxDrawMatrix;
93    fn index(&self, index: DrawMatrixId) -> &Self::Output {
94        let d = &self.pool.pool[index.0];
95        if d.generation != index.1 {
96            error!("MatrixNode id generation wrong {} {} {}", index.0, d.generation, index.1)
97        }
98        &d.item
99    }
100}
101
102impl std::ops::IndexMut<DrawMatrixId> for CxDrawMatrixPool {
103    fn index_mut(&mut self, index: DrawMatrixId) -> &mut Self::Output {
104        let d = &mut self.pool.pool[index.0];
105        if d.generation != index.1 {
106            error!("MatrixNode id generation wrong {} {} {}", index.0, d.generation, index.1)
107        }
108        &mut d.item
109        
110    }
111}
112
makepad_platform/draw_matrix.rs

makepad_platform/
draw_matrix.rs
