W4 GUI Creation

Scope

Assuming that you have read the article W4 Physics for Dummies.

This page describes how to use the W4 [GUI] subsystem.

This subsystem is based on widgets. A widget is a user interface element that you can specify the appearance and user input processing. For example, "w4 :: gui :: Label" allows you to show some text, and with "w4 :: gui :: Image" you can show a picture from a file. You can also assign a click handler.

Basic Information

Take the following code as the basis:

#include "W4Framework.h"

W4_USE_UNSTRICT_INTERFACE

struct W4_GUI_Demo : public IGame
{
public:
    void onStart() override
    {
        auto cam = Render::getScreenCamera();
        cam->setWorldTranslation({0.f, 0, -25.f});
        cam->setFov(45.f);

        m_shape = Mesh::create::cube({5,5,5});
        m_shape->setMaterialInst(Material::getDefault()->createInstance());

        Render::getRoot()->addChild(m_shape);
    }

    void onUpdate(float dt) override
    {
        m_shape->rotateLocal({dt,dt,dt});
    }

private:
    sptr<Mesh> m_shape;
};

W4_RUN(W4_GUI_Demo)