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ViewItem.cpp
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ViewItem.cpp
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#include "AbstractObject.h"
#include "ResolutionConversionSingleton.h"
#include "ViewItem.h"
ViewItem::ViewItem(QQuickItem *aParentPtr)
: QQuickItem(aParentPtr),
theAOPtr(nullptr),
wasColliding(false)
{
// Nothing to do here...
}
// TODO: create a destructor, because we need to take the AO from the world upon destruction.
QRectF
ViewItem::AABB()
{
// parentItem.boundingRect() only addresses the size, it doesn't have the coordinates.
QRectF myBB = parentItem()->boundingRect();
qreal myCX = parentItem()->x() + 0.5*myBB.width();
qreal myCY = parentItem()->y() + 0.5*myBB.height();
qreal myA = -parentItem()->rotation() * PI / 180; // in radians
// adjusted (for rotation) width and height
qreal myAW = fabs(myBB.width()*cos(myA)) + fabs(myBB.height()*sin(myA));
qreal myAH = fabs(myBB.width()*sin(myA)) + fabs(myBB.height()*cos(myA));
QRectF myResult(myCX-.5*myAW, myCY-.5*myAH,
myAW, myAH );
return myResult;
}
void
ViewItem::adjustObjectDrawingFromAO()
{
assert(theAOPtr!=nullptr);
// convert width and height from SI to pixels and set them
QSize mySize = Vector(theAOPtr->theWidth, theAOPtr->theHeight).toQSize();
parentItem()->setWidth(mySize.width());
parentItem()->setHeight(mySize.height());
// convert center position from SI to pixels and set the top-left position
parentItem()->setRotation(theAOPtr->theCenter.angleInDegrees());
QPointF myCenter = theAOPtr->theCenter.toQPointF();
qreal myHalfW = mySize.width() / 2.;
qreal myHalfH = mySize.height() / 2.;
parentItem()->setX(myCenter.x() - myHalfW);
parentItem()->setY(myCenter.y() - myHalfH);
// TODO: Frame number
// and make sure that we are updated whenever the UI changes a parameter,
// so we can update the AO and check for collisions
connect (parentItem(), SIGNAL(heightChanged()), this, SLOT(parentParamChanged()));
connect (parentItem(), SIGNAL(widthChanged()), this, SLOT(parentParamChanged()));
connect (parentItem(), SIGNAL(xChanged()), this, SLOT(parentParamChanged()));
connect (parentItem(), SIGNAL(yChanged()), this, SLOT(parentParamChanged()));
connect (parentItem(), SIGNAL(zChanged()), this, SLOT(parentParamChanged()));
connect (parentItem(), SIGNAL(rotationChanged()),this,SLOT(parentParamChanged()));
}
ViewItem *ViewItem::findVIinVO(QQuickItem *anVOPtr)
{
assert (anVOPtr!=nullptr);
ViewItem* myVIPtr = nullptr;
QList<QQuickItem*> myChilds = anVOPtr->childItems();
for (auto I : myChilds) {
if (I->objectName() == "theVI")
myVIPtr = qobject_cast<ViewItem*>(I);
}
return myVIPtr;
}
bool
ViewItem::isColliding()
{
return isColliding(AABB(), parentItem()->rotation());
}
bool
ViewItem::isColliding(const QRectF& anAABB, qreal anAngleDegrees)
{
bool myResult = false;
//** check for collisions with the widget boundaries
qreal myWidth = ResolutionConversionSingleton::me()->renderPixels();
qreal myHeight= ResolutionConversionSingleton::me()->renderPixels()/ResolutionConversionSingleton::me()->aspectRatio();
// left
if (anAABB.contains(0, anAABB.center().y())) myResult=true;
// top
if (anAABB.contains(anAABB.center().x(), 0)) myResult=true;
// bottom
if (anAABB.contains(anAABB.center().x(), myHeight)) myResult=true;
// right
if (anAABB.contains(myWidth,anAABB.center().y())) myResult=true;
//** check for collisions with any other objects
if (theAOPtr != nullptr)
{
if (theAOPtr->wouldBeColliding( Position(anAABB, anAngleDegrees),
ResolutionConversionSingleton::me()->convertPixels2W(anAABB.width()),
ResolutionConversionSingleton::me()->convertPixels2H(anAABB.height())))
myResult = true;
}
if (myResult != wasColliding)
{
parentItem()->setProperty("isColliding", myResult);
}
wasColliding = myResult;
return myResult;
}
void
ViewItem::parentParamChanged()
{
//*** adjust isColliding property in parentItem when needed
isColliding();
//*** update AO with new position/width/height
theAOPtr->theCenter = Position(QPointF(parentItem()->x()+parentItem()->width()/2.,
parentItem()->y()+parentItem()->height()/2.),
parentItem()->rotation());
Vector mySize(QSizeF(parentItem()->width(), parentItem()->height()));
theAOPtr->theWidth = mySize.dx;
theAOPtr->theHeight= mySize.dy;
}
void ViewItem::setAbstractObjectPtr(AbstractObject *anAOPtr)
{
assert (anAOPtr != nullptr);
theAOPtr = anAOPtr;
// TODO: retrieve image info
//
// TODO: update isHResize / isVResize / isRotate
rand();
parentItem()->setProperty("isHResize", true); //rand() % 2);
parentItem()->setProperty("isVResize", true); // rand() % 2);
parentItem()->setProperty("isRotate", true); // rand() % 2);
adjustObjectDrawingFromAO();
}