void RenderTaskBase::renderTask()
{
if (enable_bind_shader_ == true)
shader_.bindAndConfigBasicUniforms();
//config global uniforms
GlobalUniformConfig & global_uniform_config = GlobalUniformConfig::getSingleton();
global_uniform_config.configGlobalUniforms();
//set model transform
const Matrix4f & model_trans = transform_.transformMatrix();
openGLSetCurBindShaderMat4("model_trans", model_trans);
glVerify(glPushAttrib(GL_ALL_ATTRIB_BITS));
renderTaskImpl();
glVerify(glPopAttrib());
if (enable_bind_shader_ == true)
shader_.unBind();
}
void PinchGestureProcessor::Process( const Integration::PinchGestureEvent& pinchEvent )
{
switch ( pinchEvent.state )
{
case Gesture::Started:
{
// The pinch gesture should only be sent to the gesture detector which first received it so that
// it can be told when the gesture ends as well.
mCurrentPinchEmitters.clear();
ResetActor();
HitTestAlgorithm::Results hitTestResults;
if( HitTest( mStage, pinchEvent.centerPoint, hitTestResults ) )
{
// Record the current render-task for Screen->Actor coordinate conversions
mCurrentRenderTask = hitTestResults.renderTask;
PinchEventFunctor functor( pinchEvent, *this ); // Sets mCurrentGesturedActor
GestureDetectorContainer gestureDetectors;
UpCastContainer<PinchGestureDetector>( mGestureDetectors, gestureDetectors );
ProcessAndEmit( hitTestResults, gestureDetectors, functor );
}
break;
}
case Gesture::Continuing:
case Gesture::Finished:
case Gesture::Cancelled:
{
// Only send subsequent pinch gesture signals if we processed the pinch gesture when it started.
// Check if actor is still touchable.
if ( mCurrentGesturedActor )
{
if ( mCurrentGesturedActor->IsHittable() && !mCurrentPinchEmitters.empty() && mCurrentRenderTask )
{
// Ensure actor is still attached to the emitters, if it is not then remove the emitter.
PinchGestureDetectorContainer::iterator endIter = std::remove_if( mCurrentPinchEmitters.begin(), mCurrentPinchEmitters.end(), IsNotAttachedFunctor(mCurrentGesturedActor) );
mCurrentPinchEmitters.erase( endIter, mCurrentPinchEmitters.end() );
if ( !mCurrentPinchEmitters.empty() )
{
Vector2 actorCoords;
RenderTask& renderTaskImpl( GetImplementation(mCurrentRenderTask) );
mCurrentGesturedActor->ScreenToLocal( renderTaskImpl, actorCoords.x, actorCoords.y, pinchEvent.centerPoint.x, pinchEvent.centerPoint.y );
EmitPinchSignal( Dali::Actor(mCurrentGesturedActor), mCurrentPinchEmitters, pinchEvent, actorCoords );
}
else
{
// If we have no current emitters then clear pinched actor as well.
ResetActor();
}
// Clear current emitters if pinch gesture has ended or been cancelled.
if ( pinchEvent.state == Gesture::Finished || pinchEvent.state == Gesture::Cancelled )
{
mCurrentPinchEmitters.clear();
ResetActor();
}
}
else
{
mCurrentPinchEmitters.clear();
ResetActor();
}
}
break;
}
case Gesture::Clear:
DALI_ASSERT_ALWAYS( false && "Incorrect state received from Integration layer: Clear\n" );
break;
case Gesture::Possible:
DALI_ASSERT_ALWAYS( false && "Incorrect state received from Integration layer: Possible\n" );
break;
}
}
bool PanGestureProcessor::CheckGestureDetector( GestureDetector* detector, Actor* actor )
{
DALI_ASSERT_DEBUG( mCurrentPanEvent );
bool retVal( false );
PanGestureDetector* panDetector( static_cast< PanGestureDetector* >( detector ) );
if ( ( mCurrentPanEvent->numberOfTouches >= panDetector->GetMinimumTouchesRequired() ) &&
( mCurrentPanEvent->numberOfTouches <= panDetector->GetMaximumTouchesRequired() ) )
{
// Check if the detector requires directional panning.
if ( panDetector->RequiresDirectionalPan() && mCurrentRenderTask )
{
// It does, calculate the angle of the pan in local actor coordinates and ensures it fits
// the detector's criteria.
RenderTask& renderTaskImpl( GetImplementation( mCurrentRenderTask ) );
Vector2 startPosition, currentPosition;
actor->ScreenToLocal( renderTaskImpl, startPosition.x, startPosition.y, mPossiblePanPosition.x, mPossiblePanPosition.y );
actor->ScreenToLocal( renderTaskImpl, currentPosition.x, currentPosition.y, mCurrentPanEvent->currentPosition.x, mCurrentPanEvent->currentPosition.y );
Vector2 displacement( currentPosition - startPosition );
Radian angle( atan( displacement.y / displacement.x ) );
/////////////////////////////
// | //
// | //
// Q3 (-,-) | Q4 (+,-) //
// | //
// ----------------- +x //
// | //
// Q2 (-,+) | Q1 (+,+) //
// | //
// | //
// +y //
/////////////////////////////
// Quadrant 1: As is
// Quadrant 2: 180 degrees + angle
// Quadrant 3: angle - 180 degrees
// Quadrant 4: As is
/////////////////////////////
if ( displacement.x < 0.0f )
{
if ( displacement.y >= 0.0f )
{
// Quadrant 2
angle.radian += Math::PI;
}
else
{
// Quadrant 3
angle.radian -= Math::PI;
}
}
if ( panDetector->CheckAngleAllowed( angle ) )
{
retVal = true;
}
}
else
{
// Directional panning not required so we can use this actor and gesture detector.
retVal = true;
}
}
return retVal;
}
void PanGestureProcessor::EmitPanSignal( Actor* actor,
const GestureDetectorContainer& gestureDetectors,
const Integration::PanGestureEvent& panEvent,
Vector2 localCurrent,
Gesture::State state,
Dali::RenderTask renderTask )
{
if ( actor && !gestureDetectors.empty() )
{
PanGesture pan(state);
pan.time = panEvent.time;
pan.numberOfTouches = panEvent.numberOfTouches;
pan.screenPosition = panEvent.currentPosition;
pan.position = localCurrent;
RenderTask& renderTaskImpl( GetImplementation( renderTask ) );
Vector2 localPrevious;
actor->ScreenToLocal( renderTaskImpl, localPrevious.x, localPrevious.y, panEvent.previousPosition.x, panEvent.previousPosition.y );
pan.displacement = localCurrent - localPrevious;
Vector2 previousPos( panEvent.previousPosition );
if ( state == Gesture::Started )
{
previousPos = mPossiblePanPosition;
}
pan.screenDisplacement = panEvent.currentPosition - previousPos;
// Avoid dividing by 0
if ( panEvent.timeDelta > 0 )
{
pan.velocity.x = pan.displacement.x / panEvent.timeDelta;
pan.velocity.y = pan.displacement.y / panEvent.timeDelta;
pan.screenVelocity.x = pan.screenDisplacement.x / panEvent.timeDelta;
pan.screenVelocity.y = pan.screenDisplacement.y / panEvent.timeDelta;
}
// When the gesture ends, we may incorrectly get a ZERO velocity (as we have lifted our finger without any movement)
// so we should use the last recorded velocity instead in this scenario.
if ( ( state == Gesture::Finished ) && ( pan.screenVelocity == Vector2::ZERO ) &&
( panEvent.timeDelta < MAXIMUM_TIME_WITH_VALID_LAST_VELOCITY ) )
{
pan.velocity = mLastVelocity;
pan.screenVelocity = mLastScreenVelocity;
}
else
{
// Store the current velocity for future iterations.
mLastVelocity = pan.velocity;
mLastScreenVelocity = pan.screenVelocity;
}
if ( mSceneObject )
{
// We update the scene object directly rather than sending a message.
// Sending a message could cause unnecessary delays, the scene object ensure thread safe behaviour.
mSceneObject->AddGesture( pan );
}
Dali::Actor actorHandle( actor );
const GestureDetectorContainer::const_iterator endIter = gestureDetectors.end();
for ( GestureDetectorContainer::const_iterator iter = gestureDetectors.begin(); iter != endIter; ++iter )
{
static_cast< PanGestureDetector* >( *iter )->EmitPanGestureSignal( actorHandle, pan );
}
}
}
