/*! \internal */
QCamera::QCamera(QCameraPrivate &dd, QNode *parent)
: QEntity(dd, parent)
{
QObject::connect(d_func()->m_lens, SIGNAL(projectionTypeChanged()), this, SIGNAL(projectionMatrixChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(nearPlaneChanged()), this, SIGNAL(nearPlaneChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(farPlaneChanged()), this, SIGNAL(farPlaneChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(fieldOfViewChanged()), this, SIGNAL(fieldOfViewChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(aspectRatioChanged()), this, SIGNAL(aspectRatioChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(leftChanged()), this, SIGNAL(leftChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(rightChanged()), this, SIGNAL(rightChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(bottomChanged()), this, SIGNAL(bottomChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(topChanged()), this, SIGNAL(topChanged()));
QObject::connect(d_func()->m_lens, SIGNAL(projectionMatrixChanged()), this, SIGNAL(projectionMatrixChanged()));
QObject::connect(d_func()->m_lookAt, SIGNAL(positionChanged()), this, SIGNAL(positionChanged()));
QObject::connect(d_func()->m_lookAt, SIGNAL(upVectorChanged()), this, SIGNAL(upVectorChanged()));
QObject::connect(d_func()->m_lookAt, SIGNAL(viewCenterChanged()), this, SIGNAL(viewCenterChanged()));
QObject::connect(d_func()->m_transform, SIGNAL(matrixChanged()), this, SIGNAL(matrixChanged()));
d_func()->m_transform->addTransform(d_func()->m_lookAt);
addComponent(d_func()->m_lens);
addComponent(d_func()->m_transform);
}
void ImageView::zoomRegion(const QRect& region)
{
QRect size = this->geometry(); // Canvas size.
QRect targetRect = region.intersected(size); // Zoom region.
QPoint targetCenter = targetRect.center(); // Zoom center.
QRect visibleRect = this->visibleRegion().boundingRect(); // Viewport.
float sx = static_cast<float>(visibleRect.width()) / targetRect.width();
float sy = static_cast<float>(visibleRect.height()) / targetRect.height();
float newScale = (sx < sy) ? sx : sy;
float scale = newScale * static_cast<float>(size.width()) / m_image.width();
this->setZoomLevel(scale);
emit viewCenterChanged(newScale * targetCenter.x(),
newScale * targetCenter.y());
}
void ImageView::mouseReleaseEvent(QMouseEvent *event)
{
switch (m_mouseMode) {
case MM_ZOOM:
m_rubberBand->hide();
if (m_rubberBand->geometry().isNull()) {
/* Zoom step. */
int newCenterX, newCenterY;
int x = event->x();
int y = event->y();
if (event->modifiers() & Qt::ControlModifier) {
this->zoomOut();
if (m_zoomLevel != 1) {
newCenterX = (int)(x * (this->m_zoomLevel - 1.0)
/ this->m_zoomLevel);
newCenterY = (int)(y * (this->m_zoomLevel - 1.0)
/ this->m_zoomLevel);
emit viewCenterChanged(newCenterX, newCenterY);
if (visibleRegion().contains(event->pos())) {
this->canvasToImage(x, y);
emit mousePosChanged(x, y);
} else {
emit mousePosChanged(-1, -1);
}
}
} else if (event->modifiers() == Qt::ShiftModifier) {
this->setZoomLevel(1.0f);
} else {
this->zoomIn();
newCenterX = (int)(x * (this->m_zoomLevel + 1.0)
/ this->m_zoomLevel);
newCenterY = (int)(y * (this->m_zoomLevel + 1.0)
/ this->m_zoomLevel);
emit viewCenterChanged(newCenterX, newCenterY);
if (visibleRegion().contains(event->pos())) {
this->canvasToImage(x, y);
emit mousePosChanged(x, y);
} else {
emit mousePosChanged(-1, -1);
}
}
} else {
/* Lasso zoom. */
if (!(event->modifiers() & Qt::ControlModifier)) {
zoomRegion(m_rubberBand->geometry());
}
}
break;
case MM_MINMAX:
{
QRect selRect = this->m_minMaxLens->geometry();
//QRect visRect = this->visibleRegion().boundingRect();
selRect.moveLeft(selRect.left() / this->m_zoomLevel);
selRect.moveTop(selRect.top() / this->m_zoomLevel);
selRect.setWidth(::ceilf(static_cast<float>(selRect.width())
/ this->m_zoomLevel));
selRect.setHeight(::ceilf(static_cast<float>(selRect.height())
/ this->m_zoomLevel));
emit minMaxAreaChanged(selRect);
this->m_minMaxLens->setVisible(false);
if (event->modifiers() & Qt::ControlModifier) {
emit setMappingBounds();
}
} break;
default:
break;
}
}
