Purezento

Purezento is a simple graphics libaray to draw simple objects and interactive it with commands. It is based imgui and Code-Red.

Thie project is only used for my alg-dat course design. It can provide some simple interface to draw simple objects. User only need to provide some callback functions to build a demo.

Usage

• Build simple demos with graphics.
• Draw some 2D objects with commands.

Build

• Clone this repositoriy.
• Clone Code-Red to References folder.
• Open .sln with Visual Studio 2019 and build it with x64.

How to use

There are four core interface for user. There are runtime, console, render, config. Before you add callbacks to them, you should create a runtime instance. When you finished to add callbacks, you should call runtime::run_loop to start main loop of program.

auto runtime = std::make_shared<purezento::runtime>(...);

// add callbacks to console, render, config

runtime->run_loop();

You can use runtime to get other core interface.

Console

Console is a window that user can input command and output some texts.

Console provide two public members.

• callbacks : When you input a command, the console will find the callback that support this command and run it. It is a std::map<std::string, callback>. The first is the name of command, the second is the callback function.

• texts : The texts of console, if you want to add a text to console window, just use push_back to add text. It is a std::vector<console_text>, you also can erase or update texts by modifying the texts.

Render

Render is a simple renderer to render simple objects. For example, circle, text, rectangle, triangle and so on.

Render provide two public members.

• callbacks : We will invoke them in the loop of program every time. You can use this callback function to update the draw_elements. It is a std::vector<std::string, callback>.

• draw_elements : Render lists indicate the elements we will render. It is a std::map<std::string, std::vector<draw_element>>. The first is a group name of draw_elements and the second is an array of draw_element.

Config

Config is used to set some properties of program. For example, the width of line we render.

Config provide a public members.

• callbacks : We will invoke them in the loop of program every time. User can use imgui to add some UI objects to config window.