static VALUE tip_position(VALUE self)
{
Leap::Pointable * pointer;
Leap::Vector * vector;
Data_Get_Struct(self, Leap::Pointable, pointer);
vector = new Leap::Vector(pointer->tipPosition());
return WrapVector(vector);
}
void ZirkLeap::onFrame(const Leap::Controller& controller) {
if(controller.hasFocus()) {
Leap::Frame frame = controller.frame();
if (mPointableId >= 0) {
ourProcessor->setSelectedSource(mEditor->getCBSelectedSource()-1);
Leap::Pointable p = frame.pointable(mPointableId);
if (!p.isValid() || !p.isExtended()) {
mPointableId = -1;
mLastPositionValid = false;
} else {
Leap::Vector pos = p.tipPosition();
const float zPlane1 = 50; // 5 cm
const float zPlane2 = 100; // 10 cm
if (pos.z < zPlane2) {
if (mLastPositionValid) {
//Leap Motion mouvement are calculated from the last position in order to have something dynamic and ergonomic
Leap::Vector delta = pos- mLastPosition;
float scale = 3;
if (pos.z > zPlane1) {
float s = 1 - (pos.z - zPlane1) / (zPlane2 - zPlane1);
scale *= s;
}
int src = ourProcessor->getSelectedSource();
float fX, fY;
ourProcessor->getSources()[src].getXY(fX, fY);
fX += delta.x * scale;
fY -= delta.y * scale;
//clamp coordinates to circle
float fCurR = hypotf(fX, fY);
if ( fCurR > ZirkOscAudioProcessor::s_iDomeRadius){
float fExtraRatio = ZirkOscAudioProcessor::s_iDomeRadius / fCurR;
fX *= fExtraRatio;
fY *= fExtraRatio;
}
mEditor->move(src, fX, fY);
} else {
//std::cout << "pointable last pos not valid" << std::endl;
}
mLastPosition = pos;
mLastPositionValid = true;
} else {
//std::cout << "pointable not touching plane" << std::endl;
mLastPositionValid = false;
}
}
}
if (mPointableId < 0) {
Leap::PointableList pl = frame.pointables().extended();
if (pl.count() > 0) {
mPointableId = pl[0].id();
//std::cout << "got new pointable: " << mPointableId << std::endl;
}
}
}
}
void Scene::updateInteraction( const Frame& frame )
{
static const uint8_t kMaxContactMissedFrames = 64;
(void)frame;
for (size_t i=0; i < m_uiNumObjects; i++)
{
const SceneObjectPtr& pObj = m_apObjects[i];
if (!pObj->HasInitialContact() && pObj->GetNumContacts() == 0 && pObj->GetNumPointing() == 0)
{
pObj->m_fTotalHitTime = 0.0f;
}
/// selection state change from not selected to selected
else if ( !pObj->IsSelected() && pObj->m_fTotalHitTime >= m_fSelectHitTime )
{
SceneInteraction selection;
selection.m_uiFlags = kIT_SelectionChange | kIT_IsSelected;
selection.m_pObject = pObj;
queueInteraction( selection );
}
/// possible manipulation
else if ( pObj->IsSelected() )
{
if ( pObj->HasInitialContact() )
{
const SceneContactPoint& initContact = pObj->m_initialContactPoint;
Leap::Pointable contactPointable = frame.pointable(initContact.m_iPointableID);
if ( contactPointable.isValid() )
{
const Vector vPointablePos = TransformFramePoint(contactPointable.tipPosition());
const Vector vTrans = (vPointablePos - pObj->GetCenter());
SceneInteraction translation;
translation.m_mtxTransform.origin = vTrans;
translation.m_uiFlags |= kIT_Translation;
translation.m_pObject = pObj;
queueInteraction( translation );
pObj->m_uiHasInitialContact = kMaxContactMissedFrames;
}
else
{
pObj->m_uiHasInitialContact--;
if ( !pObj->m_uiLastNumContacts )
{
pObj->ClearHits();
}
}
}
else
{
if ( pObj->GetNumContacts() )
{
pObj->m_initialContactPoint = *(pObj->GetContactPoint(0));
pObj->m_initialContactPoint.m_vPoint -= pObj->GetCenter();
pObj->m_uiHasInitialContact = kMaxContactMissedFrames;
}
else if ( pObj->GetLastNumContacts() )
{
pObj->m_initialContactPoint = *(pObj->GetLastContactPoint(0));
pObj->m_initialContactPoint.m_vPoint -= pObj->GetCenter();
pObj->m_uiHasInitialContact = kMaxContactMissedFrames;
}
}
/// multi touch
if (pObj->GetLastNumContacts() >= 2 && pObj->GetNumContacts() >= 2)
{
const SceneContactPoint& lastContact0 = *(pObj->GetLastContactPoint(0));
const SceneContactPoint& lastContact1 = *(pObj->GetLastContactPoint(1));
const SceneContactPoint* pCurContact0 = pObj->GetContactPointByPointableID( lastContact0.m_iPointableID );
const SceneContactPoint* pCurContact1 = pObj->GetContactPointByPointableID( lastContact1.m_iPointableID );
if ( pCurContact0 && pCurContact1 )
{
const Vector lastVec = (lastContact1.m_vPoint - lastContact0.m_vPoint);
const Vector newVec = (pCurContact1->m_vPoint - pCurContact0->m_vPoint);
if ( !IsNearEqual(lastVec, newVec) && !IsNearZero(lastVec) )
{
const float fLastDist = lastVec.magnitude();
const float fNewDist = newVec.magnitude();
/// scale by change in pinch distance
const float fScale = fNewDist/fLastDist;
/// rotate by tilt of fingers
const Vector vLastDir = lastVec * 1.0f/fLastDist;
const Vector vNewDir = newVec * 1.0f/fNewDist;
const Vector vAxis = vNewDir.cross(vLastDir);
const float fAngle = acosf( vNewDir.dot(vLastDir) );
/// translate by average movement
const Vector vTrans = ( (pCurContact0->m_vPoint - lastContact0.m_vPoint) +
(pCurContact1->m_vPoint - lastContact1.m_vPoint) ) * 0.5f;
SceneInteraction interaction;
if ( !IsNearZero(fAngle) )
{
interaction.m_mtxTransform.setRotation( vAxis, fAngle );
interaction.m_uiFlags |= kIT_Rotation;
}
if ( !IsNearEqual(fScale, 1.0f) )
{
interaction.m_fScale = fScale;
interaction.m_uiFlags |= kIT_Scale;
}
if ( !IsNearZero( vTrans ) )
{
interaction.m_mtxTransform.origin = vTrans;
interaction.m_uiFlags |= kIT_Translation;
}
if ( interaction.m_uiFlags )
{
interaction.m_pObject = pObj;
queueInteraction( interaction );
}
}
}
}
}
pObj->rotateContactPoints();
pObj->m_uiNumPointing = 0;
}
}