b3view/Engine.cpp

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#include "Engine.h"
/* //////////////////////////////////////////////////////////////////////////
PRIVATE METHODS
/////////////////////////////////////////////////////////////////////// */
void Engine::setupScene()
{
// Setup Light
ILightSceneNode *light = m_Scene->addLightSceneNode();
light->setID( SIID_LIGHT );
light->setLightType( ELT_DIRECTIONAL );
light->getLightData().AmbientColor = SColorf( 0.2f, 0.2f, 0.2f );
light->getLightData().DiffuseColor = SColorf( 0.8f, 0.8f, 0.8f );
m_Scene->setAmbientLight( SColorf( 0.2f, 0.2f, 0.2f ));
// Setup Camera
ICameraSceneNode *camera = m_Scene->addCameraSceneNode( 0, vector3df( 0, 0, -10 ), vector3df() );
camera->setAspectRatio(( f32 ) m_Driver->getScreenSize().Width / m_Driver->getScreenSize().Height );
}
IGUIEnvironment * Engine::getGUIEnvironment() const
{
return m_Device->getGUIEnvironment();
}
void Engine::drawAxisLines()
{
SMaterial *lineX = new SMaterial();
lineX->Lighting = false;
lineX->EmissiveColor = SColor( 255, 255, 0, 0 );
lineX->Thickness = 1.0f;
SMaterial *lineY = new SMaterial( *lineX );
lineY->EmissiveColor = SColor( 255, 0, 255, 0 );
SMaterial *lineZ = new SMaterial( *lineX );
lineZ->EmissiveColor = SColor( 255, 0, 0, 255 );
m_Driver->setTransform( ETS_WORLD, matrix4() );
m_Driver->setMaterial( *lineX );
m_Driver->draw3DLine( vector3df(), vector3df( 5, 0, 0 ), SColor( 255, 255, 0, 0 ));
position2d<s32> textPos = m_Scene->getSceneCollisionManager()->getScreenCoordinatesFrom3DPosition( vector3df( 5.2, 0, 0 ));
dimension2d<u32> textSize = m_AxisFont->getDimension( L"X+" );
m_AxisFont->draw( L"X+", rect<s32>( textPos, textSize ), SColor( 255, 255, 0, 0 ), true, true );
m_Driver->setMaterial( *lineY );
m_Driver->draw3DLine( vector3df(), vector3df( 0, 5, 0 ), SColor( 255, 0, 255, 0 ));
textPos = m_Scene->getSceneCollisionManager()->getScreenCoordinatesFrom3DPosition( vector3df( 0, 5.2, 0 ));
textSize = m_AxisFont->getDimension( L"Y+" );
m_AxisFont->draw( L"Y+", rect<s32>( textPos, textSize ), SColor( 255, 0, 255, 0 ), true, true );
m_Driver->setMaterial( *lineZ );
m_Driver->draw3DLine( vector3df(), vector3df( 0, 0, 5 ), SColor( 255, 0, 0, 255 ));
textPos = m_Scene->getSceneCollisionManager()->getScreenCoordinatesFrom3DPosition( vector3df( 0, 0, 5.2 ));
textSize = m_AxisFont->getDimension( L"Z+" );
m_AxisFont->draw( L"Z+", rect<s32>( textPos, textSize ), SColor( 255, 0, 0, 255 ), true, true );
delete lineX;
delete lineY;
delete lineZ;
}
void Engine::drawBackground()
{
dimension2d<u32> screenSize = m_Driver->getScreenSize();
m_Driver->draw2DRectangle( rect<s32>( 0, 0, screenSize.Width, screenSize.Height ),
SColor( 255, 128, 128, 255 ),
SColor( 255, 128, 128, 255 ),
SColor( 255, 224, 224, 255 ),
SColor( 255, 224, 224, 255 ));
}
void Engine::checkResize()
{
if(( m_WindowSize->Width != m_Driver->getScreenSize().Width ) || ( m_WindowSize->Height != m_Driver->getScreenSize().Height ))
{
m_WindowSize->Width = m_Driver->getScreenSize().Width;
m_WindowSize->Height = m_Driver->getScreenSize().Height;
f32 aspectRatio = (f32) m_WindowSize->Width / m_WindowSize->Height;
debug() << "Setting aspect to: " << aspectRatio << endl;
m_Scene->getActiveCamera()->setAspectRatio( aspectRatio );
}
}
/* //////////////////////////////////////////////////////////////////////////
PUBLIC METHODS
/////////////////////////////////////////////////////////////////////// */
Engine::Engine()
{
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#if WIN32
m_Device = createDevice( EDT_DIRECT3D9, dimension2d<u32>( 1024, 768 ), 32, false, false, false, 0 );
#else
m_Device = createDevice( EDT_OPENGL, dimension2d<u32>( 1024, 768 ), 32, false, false, false, 0 );
#endif
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m_Device->setResizable( true );
m_EventHandler = new EventHandler( m_Device );
m_Device->setEventReceiver( m_EventHandler );
m_Driver = m_Device->getVideoDriver();
m_Scene = m_Device->getSceneManager();
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wstringstream windowTitle;
windowTitle << L"Blitz3D Viewer [" << m_Driver->getName() << L"]";
m_Device->setWindowCaption( windowTitle.str().c_str() );
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setupScene();
// Setup User Interface
m_UserInterface = new UserInterface( this );
m_EventHandler->addEventReceiver( ERT_USERINTERFACE, m_UserInterface );
// Setup 3D View
m_View = new View( this );
m_EventHandler->addEventReceiver( ERT_3DVIEW, m_View );
// Load font for displaying Axis names
m_AxisFont = m_Device->getGUIEnvironment()->getFont( "arial.xml" );
// Set Engine enabled
m_RunEngine = true;
m_LoadedMesh = 0;
// Store actual window size
m_WindowSize = new dimension2d<u32>();
m_WindowSize->Width = m_Driver->getScreenSize().Width;
m_WindowSize->Height = m_Driver->getScreenSize().Height;
}
Engine::~Engine()
{
m_Device->drop();
delete m_WindowSize;
}
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void Engine::loadMesh( const wstring &fileName )
{
if( m_LoadedMesh != 0 )
m_LoadedMesh->remove();
m_LoadedMesh = m_Scene->addAnimatedMeshSceneNode( m_Scene->getMesh( fileName.c_str() ));
}
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void Engine::run()
{
u32 timePerFrame = ( u32 ) ( 1000.0f / 60 );
ITimer *timer = m_Device->getTimer();
// Run the Device with 60 frames/sec
while( m_Device->run() && m_RunEngine )
{
u32 startTime = timer->getRealTime();
checkResize();
m_Driver->beginScene();
drawBackground(); // Draw Background
drawAxisLines(); // Draw XYZ Axis
m_Scene->drawAll(); // Draw Scenegraph
m_UserInterface->getGUIEnvironment()->drawAll();
m_Driver->endScene();
u32 sleepTime = timePerFrame - ( timer->getRealTime() - startTime );
if( sleepTime > 0 && sleepTime < timePerFrame )
m_Device->sleep( sleepTime, false );
}
}