Updated ImGui.

3rdparty/dear-imgui/imgui.cpp

@@ -310,9 +310,18 @@ CODE
  USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS
  ------------------------------------------
  - The gamepad/keyboard navigation is fairly functional and keeps being improved.
- - Gamepad support is particularly useful to use dear imgui on a console system (e.g. PS4, Switch, XB1) without a mouse!
+ - Gamepad support is particularly useful to use Dear ImGui on a console system (e.g. PS4, Switch, XB1) without a mouse!
  - You can ask questions and report issues at https://github.com/ocornut/imgui/issues/787
  - The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+ - Keyboard:
+    - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable.
+      NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.
+    - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag
+      will be set. For more advanced uses, you may want to read from:
+       - io.NavActive: true when a window is focused and it doesn't have the ImGuiWindowFlags_NoNavInputs flag set.
+       - io.NavVisible: true when the navigation cursor is visible (and usually goes false when mouse is used).
+       - or query focus information with e.g. IsWindowFocused(ImGuiFocusedFlags_AnyWindow), IsItemFocused() etc. functions.
+      Please reach out if you think the game vs navigation input sharing could be improved.
  - Gamepad:
     - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
     - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame().
@@ -324,15 +333,6 @@ CODE
     - You can download PNG/PSD files depicting the gamepad controls for common controllers at: http://goo.gl/9LgVZW.
     - If you need to share inputs between your game and the imgui parts, the easiest approach is to go all-or-nothing, with a buttons combo
       to toggle the target. Please reach out if you think the game vs navigation input sharing could be improved.
- - Keyboard:
-    - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable.
-      NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.
-    - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag
-      will be set. For more advanced uses, you may want to read from:
-       - io.NavActive: true when a window is focused and it doesn't have the ImGuiWindowFlags_NoNavInputs flag set.
-       - io.NavVisible: true when the navigation cursor is visible (and usually goes false when mouse is used).
-       - or query focus information with e.g. IsWindowFocused(ImGuiFocusedFlags_AnyWindow), IsItemFocused() etc. functions.
-      Please reach out if you think the game vs navigation input sharing could be improved.
  - Mouse:
     - PS4 users: Consider emulating a mouse cursor with DualShock4 touch pad or a spare analog stick as a mouse-emulation fallback.
     - Consoles/Tablet/Phone users: Consider using a Synergy 1.x server (on your PC) + uSynergy.c (on your console/tablet/phone app) to share your PC mouse/keyboard.
@@ -587,13 +587,16 @@ CODE
     - See demo code in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function.
     - The demo covers most features of Dear ImGui, so you can read the code and see its output.
     - See documentation and comments at the top of imgui.cpp + effectively imgui.h.
-    - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the examples/
-      folder to explain how to integrate Dear ImGui with your own engine/application.
+    - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the
+      examples/ folder to explain how to integrate Dear ImGui with your own engine/application.
+    - The Wiki (https://github.com/ocornut/imgui/wiki) has many resources and links.
+    - The Glossary (https://github.com/ocornut/imgui/wiki/Glossary) page also may be useful.
     - Your programming IDE is your friend, find the type or function declaration to find comments
       associated to it.
 
  Q: Which version should I get?
  Q: Why the names "Dear ImGui" vs "ImGui"?
+ >> This library is called "Dear ImGui", please don't call it "ImGui" :)
  >> See https://www.dearimgui.org/faq
 
  Q&A: Concerns
@@ -623,6 +626,7 @@ CODE
      have 'io.WantCaptureKeyboard=false'. Depending on your application logic it may or not be inconvenient. You might want to track which key-downs
      were targeted for Dear ImGui, e.g. with an array of bool, and filter out the corresponding key-ups.)
 
+ Q. How can I enable keyboard controls?
  Q: How can I use this without a mouse, without a keyboard or without a screen? (gamepad, input share, remote display)
  Q: I integrated Dear ImGui in my engine and the text or lines are blurry..
  Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
@@ -4631,7 +4635,7 @@ void ImGui::EndChild()
     ImGuiWindow* window = g.CurrentWindow;
 
     IM_ASSERT(g.WithinEndChild == false);
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_ChildWindow);   // Mismatched BeginChild()/EndChild() callss
+    IM_ASSERT(window->Flags & ImGuiWindowFlags_ChildWindow);   // Mismatched BeginChild()/EndChild() calls
 
     g.WithinEndChild = true;
     if (window->BeginCount > 1)

3rdparty/dear-imgui/imgui.h

@@ -1934,6 +1934,8 @@ struct ImDrawList
     IMGUI_API void  AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col);
     IMGUI_API void  AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments = 12, float thickness = 1.0f);
     IMGUI_API void  AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments = 12);
+    IMGUI_API void  AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness = 1.0f);
+    IMGUI_API void  AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments);
     IMGUI_API void  AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL);
     IMGUI_API void  AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f, const ImVec4* cpu_fine_clip_rect = NULL);
     IMGUI_API void  AddPolyline(const ImVec2* points, int num_points, ImU32 col, bool closed, float thickness);

3rdparty/dear-imgui/imgui_demo.cpp

@@ -4440,9 +4440,11 @@ static void ShowExampleAppCustomRendering(bool* p_open)
         {
             static float sz = 36.0f;
             static float thickness = 3.0f;
+            static int ngon_sides = 6;
             static ImVec4 colf = ImVec4(1.0f, 1.0f, 0.4f, 1.0f);
             ImGui::DragFloat("Size", &sz, 0.2f, 2.0f, 72.0f, "%.0f");
             ImGui::DragFloat("Thickness", &thickness, 0.05f, 1.0f, 8.0f, "%.02f");
+            ImGui::SliderInt("n-gon sides", &ngon_sides, 3, 12);
             ImGui::ColorEdit4("Color", &colf.x);
             const ImVec2 p = ImGui::GetCursorScreenPos();
             const ImU32 col = ImColor(colf);
@@ -4455,7 +4457,7 @@ static void ShowExampleAppCustomRendering(bool* p_open)
             {
                 // First line uses a thickness of 1.0f, second line uses the configurable thickness
                 float th = (n == 0) ? 1.0f : thickness;
-                draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 6, th);                x += sz + spacing;  // Hexagon
+                draw_list->AddNgon(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, ngon_sides, th);         x += sz + spacing;  // n-gon
                 draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 20, th);               x += sz + spacing;  // Circle
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 0.0f,  corners_none, th);     x += sz + spacing;  // Square
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f, corners_all, th);      x += sz + spacing;  // Square with all rounded corners
@@ -4469,7 +4471,7 @@ static void ShowExampleAppCustomRendering(bool* p_open)
                 x = p.x + 4;
                 y += sz + spacing;
             }
-            draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 6);              x += sz + spacing;  // Hexagon
+            draw_list->AddNgonFilled(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz*0.5f, col, ngon_sides);   x += sz + spacing;  // n-gon
             draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 32);             x += sz + spacing;  // Circle
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col);                        x += sz + spacing;  // Square
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f);                 x += sz + spacing;  // Square with all rounded corners

3rdparty/dear-imgui/imgui_draw.cpp

@@ -1104,6 +1104,30 @@ void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col,
     PathFillConvex(col);
 }
 
+// Guaranteed to honor 'num_segments'
+void ImDrawList::AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
+{
+    if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
+        return;
+
+    // Because we are filling a closed shape we remove 1 from the count of segments/points
+    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
+    PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
+    PathStroke(col, true, thickness);
+}
+
+// Guaranteed to honor 'num_segments'
+void ImDrawList::AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
+{
+    if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
+        return;
+
+    // Because we are filling a closed shape we remove 1 from the count of segments/points
+    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
+    PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
+    PathFillConvex(col);
+}
+
 void ImDrawList::AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments)
 {
     if ((col & IM_COL32_A_MASK) == 0)