• IgRuby Examples
  • Prerequisites
  • Donwload and running examples on Windows OS
  • Snapshots
    • ImGui-Toggle / CImGui-Toggle
    • ImDrawList party
    • ImGui-Knobs / CImGui-Knobs
    • ImSpinner / CImSpinner
    • ImGuizmo / CImGuizmo
    • ImGuiColorTextEdit / cimCTE
    • ImNodes / CImNodes
    • ImGuiFileDialog
    • Iconfonts viewer
    • Image loading
    • Showing CJK fonts
  • For Linux x86_64

IgRuby Examples

---

Ruby language + Dear ImGui + Additional libraries and examples project

See ruby-imgui-dev

Prerequisites

---

✅ Windows11 or later

• Install RubyInstaller + Devkit 3.4.7 or later
  (You must install Devkit)

✅ Linux OS x86_64

• Debian13 Trixie, Ubuntu families and Windows WSL2

Donwload and running examples on Windows OS

---

1. Download igruby_examples-1.9x.y-bdn.zip from Release page then extract zip file.

2. Execute bundler command,

   $ cd igruby_examples-1.91.8-bd2/igruby_examples
   $ bundle install
   
   Fetching gem metadata from https://rubygems.org/..
   Resolving dependencies...
   Bundle complete! 6 Gemfile dependencies, 9 gems now installed.
   Use `bundle info [gemname]` to see where a bundled gem is installed.

   Note: Only supported under bundler enviroment at this moment

3. Execute one of the example script,

   cd  glfw_opengl3
   r.bat              # Or double click glfw_opengl3.rbw in Windows explorer
                      # Ignore many warnings emmited in console window

Snapshots

---

ImGui-Toggle / CImGui-Toggle

---

ImGui-Toggle / CImGui-Toggle

glfw_opengl3_imtoggle.rb

ImDrawList party

---

Reference to ImDrawList coding party - deadline Nov 30, 2020! #3606

imDrawListParty.rb

ImGui-Knobs / CImGui-Knobs

---

ImGui-Knobs / CImGui-Knobs

glfw_opengl3_imknobs.rb

ImSpinner

---

ImSpinner

glfw_opengl3_imspinner.rb

Amazing !

ImGuizmo / CImGuizmo

---

ImGuizmo / CImGuizmo

glfw_opengl3_imguizmo.rb

ImGuiColorTextEdit / cimCTE

---

ImGuiColorTextEdit / cimCTE

glfw_opengl3_imcolortextedit.rb

ImNodes / CImNodes

---

ImNodes / CImNodes

glfw_opengl3_imnodes.rb

ImGuiFileDialog

---

ImGuiFileDialog

glfw_opengl3_imguifiledialog.rb

Iconfonts viewer

---

glfw_opengl3_iconfont_viewer.rb

Image loading

---

glfw_opengl3.rb

Showing CJK fonts

---

glfw_opengl3_jp.rb

For Linux x86_64

---

1. Install tools

   $ sudo apt install clang git make ninja-build
   $ sudo apt install lib{opengl-dev,gl1-mesa-dev,glfw3,glfw3-dev,xcursor-dev,xinerama-dev,xi-dev}
   $ sudo apt install libsdl2-dev libsdl3-dev

2. Download files,

   $ pwd 
   my_dev_folder
   $ git clone --recursive https://github.com/dinau/ruby-imgui-dev
   $ git clone https://github.com/dinau/igruby_examples

   Folder structure,

   my_dev_folder
    |--- igruby_examples
    `--- ruby-imgui-dev

3. Generate imgui.so

   $ cd ruby-imgui-dev/imgui_dll
   $ make

   imgui.so file is generated in ruby-imgui-dev/lib

4. Install bundler

   $ sudo apt install ruby-dev gcc
   $ gem install --user-install bundler

5. Set environment variable,

   export GEM_HOME =~/.local/share/gem/ruby/3.3.0/bin

   Part of the 3.3.0 depends on your system.

6. Execute bundle install

   $ pwd 
   igruby_examples
   
   $ bundle install
   
   Fetching gem metadata from https://rubygems.org/..
   Resolving dependencies...
   Installing fiddle 1.1.8 with native extensions
   Fetching opengl-bindings2 2.0.4
   Installing opengl-bindings2 2.0.4
   Bundle complete! 6 Gemfile dependencies, 9 gems now installed.
   Use `bundle info [gemname]` to see where a bundled gem is installed.

7. Execute a example

   $ cd glfw_opengl3
   $ sh r.sh 

   or

   $ chmod +x glfw_opengl3.rbw
   then double click glfw_opengl3.rbw in your file explorer

   or

   $ bundle exec ruby glfw_opengl3.rb on your console