Elem.hpp
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1 #pragma once
2 
3 #include "ElementRenderer.hpp"
4 #include "../Rendering/CameraState.hpp"
5 #include "../Rendering/FlatShader.hpp"
6 
7 #include <ivorium_systems/ivorium_systems.hpp>
8 
9 namespace iv
10 {
11 
12 class Camera;
13 
16 class Elem : public InputNode
17 {
18 public:
19 ClientMarker cm;
20  Elem( Instance * inst );
21  ~Elem();
22 
23  void status( iv::TableDebugView * view );
24 
25  Instance * instance() const;
26 
27 
28 //------------------------- element tree --------------------------------
31  void elem_setParent( Elem * );
32 
35  Elem * elem_getParent();
36 
39  virtual Camera * elem_getRoot();
40 
44  virtual void elem_eachChild( std::function< void( Elem * ) > const & ){}
45 
48  virtual void elem_childDisconnect( Elem * ){}
49 
50 //------------------------- scene update traversal --------------------------------
64  void first_pass( ElementRenderer * );
65 
74  void second_pass( ElementRenderer * );
75 
76  //
77  unsigned first_pass_frame_id();
78  unsigned second_pass_frame_id();
79 
80 //------------------------- parameters --------------------------------
81 // initialization parameters
87  DirtyAttr< bool > attr_enabled;
88 
89 // inherited parameter
90  DirtyAttr< float4x4 > modelTransform;
91  DirtyAttr< ShaderScissor > scissor;
92 
93 // utility methods
94  Elem * enabled( bool val );
95 
99  void quiet( bool );
100  bool quiet() const;
101 
102 //------------------------- utilities --------------------------------
103 // math over modelTransform
104  float3 FromLocalSpaceToScreenSpace( float3 local_space );
105  float3 FromScreenSpaceToLocalSpace( float3 screen_space );
106  float2 FromScreenPlaneToLocalPlane( float2 screen_space );
107 
108 // input tree utilities
109  void Add_InputNode( InputNode * node );
110  void Remove_InputNode( InputNode * node );
111 
112 protected:
113  // InputNode
114  virtual void input_childDisconnect( InputNode * ) override;
115  virtual void input_eachChild( std::function< void( InputNode * ) > const & ) override;
116 
117  // Elem
118  virtual void first_pass_impl( ElementRenderer * ) = 0;
119  virtual void second_pass_impl( ElementRenderer * ){}
120 
121 private:
122  Instance * inst;
123  unsigned _first_pass_frame_id;
124  unsigned _second_pass_frame_id;
125  bool _quiet;
126  std::vector< InputNode * > _input_children;
127  Elem * _elem_parent;
128 };
129 
130 class Pickable
131 {
132 public:
133 ClientMarker cm;
134 
135  Pickable( Elem * elem );
136  virtual bool picking_test( int2 input_pos ) = 0;
137 
138  Elem * elem();
139  Elem const * elem() const;
140 
141 private:
142  Elem * _elem;
143 };
144 
145 }