int main()
{
RenderSystem system;
/*!
Let's load up a texture to play with.
*/
TexturePtr feather = system.loadTexture( std::string(PHOENIXCORE_DATA_DIR) + std::string("feather.png") );
/*!
let's make our group of geometry, with this
we'll demonstrate grouping and group states.
Grouped objects are drawn together and usually share
some sort of state that's controlled by the group state
object.
The first thing we need to do is manipulate our factory:
The RenderSystem. We can make it so that the next geometries
that are made have specific properties. We'll set the group
id and add the group state object.
*/
system.getBatchRenderer().addGroupState( 1, GroupStatePtr( new AdditiveState() ) );
system.getGraphicsFactory().setGroup( 1 );
/*!
Now we can draw some things, and they'll all
be additively blended.
*/
BatchGeometryPtr tgeom; // a temporary pointer for geometry.
//! Here we just draw a basic scaled texture.
tgeom = system.drawTexture( feather, Vector2d( 240,320 ), 0, Vector2d( 3.0f, 3.0f ) );
tgeom->setImmediate( false );
/*!
Here we'll draw a rectangle centered on the origin, but we'll rotate and
scale it then translate it to it's final position.
*/
system.setDepth( 1.0f );
tgeom = system.drawRectangle( Rectangle( -150,-150, 150,150 ) );
tgeom->rotate( DegreesToRadians( 45.0f ) );
tgeom->scale( Vector2d( 2.0f, 1.3f ) );
tgeom->translate( Vector2d( 300, 400 ) );
tgeom->colorize( Color( 127,200,255 ) );
tgeom->setImmediate( false );
/*!
Lastly, we'll make some completely custom geometry. He'll we'll make
a sort of circular geometry with a texture and custom tcoords
We'll first use BatchGeometry's create function.
*/
system.setDepth( 2.0f );
tgeom = new BatchGeometry( system.getBatchRenderer(), GL_TRIANGLES, feather, system.getGraphicsFactory().getGroup(), system.getDepth() );
tgeom->setImmediate( false );
/*!
Now we'll generate a simple circular peice of geometry. This is a
rather simple operation. You'll notice that we used a different
texture coordinate for the end, this creates a rather neat effect.
*/
Vector2d center( 400, 200 );
Vector2d ray( 250, 0 );
for( int i = 0; i < 360; i+=10 )
{
tgeom->addVertex( Vertex( center, Color(), TextureCoords( 0.0f, 1.0f ) ) );
tgeom->addVertex( Vertex( center + ( ray * RotationMatrix( DegreesToRadians( (float)i ) ) ), Color(), TextureCoords( 1.0f, 0.0f ) ) );
tgeom->addVertex( Vertex( center + ( ray * RotationMatrix( DegreesToRadians( (float)i + 10.0f ) ) ), Color(), TextureCoords( 1.0f, 0.0f ) ) );
}
/*!
Finally, we need to restore the properties we set. This is important
if we draw any more geometry after this, because if we don't restore
the properties all the rest of the geometry would have these properties
too!
*/
system.getGraphicsFactory().setDepth();
system.getGraphicsFactory().setGroup();
while( system.run() )
{
/*!
Just for kicks, let make it where we can move the last geometry we
created around with the arrow keys. This is easy achieved using
translate.
*/
if( EventReceiver::Instance()->getKeyPressed( PHK_UP ) ) tgeom->translate( Vector2d( 0.0f, -5.0f ) );
if( EventReceiver::Instance()->getKeyPressed( PHK_DOWN ) ) tgeom->translate( Vector2d( 0.0f, 5.0f ) );
if( EventReceiver::Instance()->getKeyPressed( PHK_RIGHT ) ) tgeom->translate( Vector2d( 5.0f, 0.0f ) );
if( EventReceiver::Instance()->getKeyPressed( PHK_LEFT ) ) tgeom->translate( Vector2d( -5.0f, 0.0f ) );
}
return 0;
}
