Drawing the national flag of Bangladesh

Using OpenGL and C++

Required Libraries

• OpenGL 4.2 (minimum)
• GLUT

Building

macOS using Xcode

Open the BD Flag OpenGL.xcodeproj, add OpenGL and GLUT libraries from project properties. Build and Run.

macOS from command line

Use -framework GLUT -framework OpenGL flag while compiling from command line (macOS only).

cd "BD Flag OpenGL"
# compile
clang++ main.cpp -o main -framework GLUT -framework OpenGL
# run
./main

Ignore the warnings since OpenGL has been deprecated in latest versions of macOS.

On Linux from command line

Use the flags provided by the opengl and glut libs built for your distro.

On Windows using Visual Studio

On Windows, install GLUT and add headers and linkers to your project in Visual Studio.

Using CLion (macOS, Linux)

If you're using CLion and/or building using CMAKE, then use the following config for your cmake.txt file

cmake_minimum_required(VERSION 3.6)
project(project_name)

set(CMAKE_CXX_STANDARD 11)

if(APPLE)
    find_package(OpenGL REQUIRED)
    include_directories(${OpenGL_INCLUDE_DIRS})
    find_package(GLUT REQUIRED)
    include_directories(${GLUT_INCLUDE_DIRS})

    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -framework GLUT -framework OpenGL")
else()
    set(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_LINK_EXECUTABLE} -lGL -lGLU -lglut")
endif()

add_executable(project_name ${SOURCE_FILES})

Screenshot