SphereTestApp.cxx

#include "cinder/app/App.h"
#include "cinder/app/RendererGl.h"
#include "cinder/gl/gl.h"

#include "cinder/qtime/QuickTimeGl.h"

using namespace ci;
using namespace ci::app;
using namespace std;

class SphereTestApp : public App
{
public:
    void                setup           ( ) override;
    void                update          ( ) override;
    void                draw            ( ) override;

    CameraPersp         _camera;
    
    gl::TextureRef      _texture;
    gl::BatchRef        _sphere;
    qtime::MovieGlRef   _video;
};

void SphereTestApp::setup()
{
    gl::enableDepth();
    
    _sphere = gl::Batch::create ( geom::Sphere().subdivisions(64).radius(32), gl::getStockShader( gl::ShaderDef().texture() ) );
    
    _video = qtime::MovieGl::create( getAssetPath( "video.mp4" ) );
    _video->setLoop();
    _video->play();
    
    _camera = CameraPersp ( getWindowWidth(), getWindowHeight(), 60.0f, 0.1f, 10000.0f );
    _camera.setWorldUp(vec3(0, -1, 0) );
    _camera.lookAt( vec3 ( 0 ), vec3 ( 0,  0, 1 ) );
}

void SphereTestApp::update ( )
{
    if ( _video->checkNewFrame() ) _texture = _video->getTexture();
    
    float t = getElapsedSeconds() * 0.2f;
    
    float x = std::sin ( t );
    float y = std::sin ( t * 2.0f ) * 0.2f;
    float z = std::cos ( t );
    
    _camera.lookAt( vec3 ( x, y, z ) );
}

void SphereTestApp::draw()
{
    gl::clear( Color( 0, 0, 0 ) );
    
    gl::setMatrices(_camera);
    if ( _texture )
    {
        gl::ScopedTextureBind tex0 ( _texture );
        _sphere->draw();
    }
}

CINDER_APP( SphereTestApp, RendererGl );