separate global tick from draw so on tick any node can request a redraw

PanoPainter-OSX/main.cpp

@@ -155,11 +155,14 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
 {
     static double _timeFreq = CVGetHostClockFrequency();
     static double _prevTime = (double)outputTime->hostTime / _timeFreq;
+    static double elapsed = 0;
     double hostTime = (double)outputTime->hostTime;
     double now = hostTime / _timeFreq;
+    double dt = now - _prevTime;
+    _prevTime = now;
 
     // this will not update unless 1/30th of a second has passed since the last update
-    if (1 /*now < _prevTime + (1.0 / 30.0) &&*/  )
+    //if (now < _prevTime + (1.0 / 30.0))
     {
         std::deque<std::packaged_task<void()>> working_list;
         {
@@ -180,17 +183,14 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
             working_list.pop_front();
         }
         
-        double dt = now - _prevTime;
-        
-        if (dt > 0.1)
-            App::I.redraw = true;
+        App::I.tick(dt);
         
         if (App::I.redraw)
         {
             App::I.clear();
-            App::I.update(dt);
+            App::I.update(elapsed);
+            elapsed = 0;
             CGLFlushDrawable([glctx CGLContextObj]);
-            _prevTime = now;
         }
         
         //[[self openGLContext] flushBuffer];
@@ -199,13 +199,6 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
         CGLUnlockContext([glctx CGLContextObj]);
         return NO;
     }
-    else
-    {
-        // change whatever you want to change here, as a function of time elapsed
-        _prevTime = now;
-        // return YES to have your layer redrawn
-        return YES;
-    }
 
     return kCVReturnSuccess;
 }

PanoPainter/GameViewController.m

@@ -427,8 +427,11 @@ std::set<UITouch*> ignored_touch;
 - (void)glkView:(GLKView *)view drawInRect:(CGRect)rect
 {
     static auto time = std::chrono::steady_clock::now();
+    static double elapsed = 0;
     auto now = std::chrono::steady_clock::now();
     auto dt = std::chrono::duration<float>(now - time);
+    time = now;
+    elapsed += dt.count();
 
     std::deque<std::packaged_task<void()>> working_list;
     if (!tasklist.empty())
@@ -437,6 +440,8 @@ std::set<UITouch*> ignored_touch;
         working_list = std::move(tasklist);
     }
     
+    App::I.tick(dt.count());
+
     [self async_lock];
     if (!(App::I.redraw || App::I.animate || !working_list.empty()))
     {
@@ -451,10 +456,10 @@ std::set<UITouch*> ignored_touch;
         working_list.pop_front();
     }
     App::I.clear();
-    App::I.update(dt.count());
+    App::I.update(elapsed);
     [self.context presentRenderbuffer:GL_FRAMEBUFFER];
     [self async_unlock];
-    time = now;
+    elapsed = 0;
 }
 
 @end

src/app.cpp

@@ -442,8 +442,6 @@ void App::update(float dt)
     if (canvas && canvas->m_canvas)
         canvas->m_canvas->stroke_draw();
     
-    layout[main_id]->tick(dt);
-    
     if (!(redraw || animate))
         return;
 

src/app.h

@@ -112,6 +112,7 @@ public:
     bool request_close();
     void terminate();
     void clear();
+    void tick(float dt);
     void update(float dt);
     void async_start();
     void async_update();

src/app_events.cpp

@@ -11,6 +11,11 @@ std::string win32_open_file();
 
 using namespace ui;
 
+void App::tick(float dt)
+{
+    layout[main_id]->tick(dt);
+}
+
 void App::resize(float w, float h)
 {
     redraw = true;

src/node.cpp

@@ -35,6 +35,11 @@
 #include "node_changelog.h"
 #include "node_usermanual.h"
 
+void Node::app_redraw()
+{
+    App::I.redraw = true;
+}
+
 void Node::async_start()
 {
     App::I.async_start();

src/node.h

@@ -211,6 +211,7 @@ public:
     virtual void removed(Node* parent);
     const Node* init_template(const char* id);
     void tick(float dt);
+    void app_redraw();
     void async_start();
     void async_update();
     void async_end();

src/node_text_input.cpp

@@ -16,7 +16,10 @@ void NodeTextInput::on_tick(float dt)
     {
         timer = 0;
         if (m_cursor)
+        {
             m_cursor->m_display = !m_cursor->m_display;
+            app_redraw();
+        }
     }
 }