Example.cpp

#ifdef _WIN32
#include <windows.h>
#endif
#include <gl/GL.h>
#include <gl/GLU.h>
#include "Example.h"

Example::Example()
{
    m_rotationAngle = 0.0f;
}

bool Example::init()
{
    glEnable(GL_DEPTH_TEST);
    glClearColor(0.5f, 0.5f, 0.5f, 0.5f);

    //Return success
    return true;
}

void Example::prepare(float dt)
{
    const float SPEED = 15.0f;
    m_rotationAngle += SPEED*dt;
    if (m_rotationAngle > 360.0f)
    {
        m_rotationAngle -=360.f;
    }
}

void Example::render()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();

    glRotatef(m_rotationAngle, 0.0f, 0.0f, 1.0f);

    glBegin(GL_TRIANGLES);
        glColor3f(1.0f, 0.0f, 0.0f);
        glVertex3f(-0.5f, -0.5f, -2.0f);
        glColor3f(1.0f, 1.0f, 0.0f);
        glVertex3f(0.5f, -0.5f, -2.0f);
        glColor3f(0.0f, 0.0f, 1.0f);
        glVertex3f(0.0f, 0.5f, -2.0f);
    glEnd();
}

void Example::shutdown()
{
    //Nothing here yet
}

void Example::onResize(int width, int height)
{
    glViewport(0,0,width,height);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();

    gluPerspective(45.0f, float(width)/float(height), 1.0f, 100.0f);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}