void ViewportView::wheelEvent(QWheelEvent* event)
{
QVector3D a = sceneToWorld(mapToScene(event->pos()));
scale *= pow(1.001, -event->delta());
QVector3D b = sceneToWorld(mapToScene(event->pos()));
center += a - b;
update();
}
void Canvas::wheelEvent(QWheelEvent *event)
{
QVector3D a = sceneToWorld(mapToScene(event->pos()));
scale *= pow(1.001, -event->delta());
QVector3D b = sceneToWorld(mapToScene(event->pos()));
pan(a - b);
emit(viewChanged());
}
void ViewportView::mouseMoveEvent(QMouseEvent* event)
{
QGraphicsView::mouseMoveEvent(event);
current_pos = event->pos();
if (scene()->mouseGrabberItem() == NULL)
{
if (event->buttons() == Qt::LeftButton)
{
center += click_pos_world - sceneToWorld(mapToScene(event->pos()));
update();
}
else if (event->buttons() == Qt::RightButton && !angle_locked)
{
QPointF d = click_pos - event->pos();
pitch = fmin(0, fmax(-M_PI, pitch - 0.01 * d.y()));
yaw = fmod(yaw + M_PI - 0.01 * d.x(), M_PI*2) - M_PI;
click_pos = event->pos();
update();
}
dragged = true;
}
// Redraw to update cursor position
scene()->invalidate(QRect(), QGraphicsScene::ForegroundLayer);
}
void Viewport::mouseMoveEvent(QMouseEvent *event)
{
_dragging = true;
_current_pos = event->pos();
QGraphicsView::mouseMoveEvent(event);
if (scene->mouseGrabberItem() == NULL)
{
if (event->buttons() == Qt::LeftButton)
{
pan(_click_pos_world - sceneToWorld(mapToScene(event->pos())));
}
else if (event->buttons() == Qt::RightButton && !angle_locked)
{
QPointF d = _click_pos - event->pos();
pitch = fmin(0, fmax(-M_PI, pitch - 0.01 * d.y()));
yaw = fmod(yaw + M_PI - 0.01 * d.x(), M_PI*2) - M_PI;
_click_pos = event->pos();
update();
scene->invalidate(QRect(),QGraphicsScene::ForegroundLayer);
emit(viewChanged());
}
}
updateInfo();
}
void Canvas::mousePressEvent(QMouseEvent *event)
{
// On right-click, show a menu of items to raise.
if (event->button() == Qt::RightButton)
{
auto menu = new QMenu(this);
QSet<Control*> used;
for (auto i : items(event->pos()))
{
while (i->parentItem())
{
i = i->parentItem();
}
auto c = dynamic_cast<Control*>(i);
if (c && !used.contains(c) && !dynamic_cast<AxesControl*>(i))
{
auto n = c->getNode();
auto a = new QAction(
n->getName() + " (" + n->getType() + ")", menu);
a->setData(QVariant::fromValue(i));
menu->addAction(a);
used << c;
}
}
if (!menu->isEmpty())
{
QAction* chosen = menu->exec(QCursor::pos());
if (chosen)
{
if (raised)
{
raised->setZValue(1);
}
raised = static_cast<Control*>(
chosen->data().value<QGraphicsItem*>());
raised->setZValue(1.1);
}
}
menu->deleteLater();
}
QGraphicsView::mousePressEvent(event);
if (!event->isAccepted())
{
if (event->button() == Qt::LeftButton)
{
_click_pos = mapToScene(event->pos());
_click_pos_world = sceneToWorld(_click_pos);
}
else
{
_click_pos = event->pos();
}
}
}
void ViewportView::drawCoords(QPainter* painter) const
{
QPointF mouse_pos = mapToScene(mapFromGlobal(QCursor::pos()));
if (!sceneRect().contains(mouse_pos))
{
return;
}
// Get rotate-only transform matrix
QMatrix4x4 M = getMatrix(ROT);
const float threshold = 0.98;
const auto a = M.inverted() * QVector3D(0, 0, 1);
QList<QPair<char, QVector3D>> axes = {
{'x', QVector3D(1, 0, 0)},
{'y', QVector3D(0, 1, 0)},
{'z', QVector3D(0, 0, 1)}};
char axis = 0;
float opacity = 0;
for (const auto v : axes)
{
float dot = fabs(QVector3D::dotProduct(a, v.second));
if (dot > threshold)
{
axis = v.first;
opacity = (dot - threshold) / (1 - threshold);
}
}
auto p = sceneToWorld(mouse_pos);
int value = opacity * 200;
painter->setPen(QPen(QColor(255, 255, 255, value)));
QString txt;
if (axis == 'z')
{
txt = QString("X: %1\nY: %2").arg(p.x()).arg(p.y());
}
else if (axis == 'y')
{
txt = QString("X: %1\nZ: %2").arg(p.x()).arg(p.z());
}
else if (axis == 'x')
{
txt = QString("Y: %1\nZ: %2").arg(p.y()).arg(p.z());
}
painter->drawText({-width()/2.0 + 10, -height()/2.0 + 10, 300, 200}, txt);
}
void ViewportView::mousePressEvent(QMouseEvent* event)
{
QGraphicsView::mousePressEvent(event);
// If the event hasn't been accepted, record click position for
// panning / rotation on mouse drag.
if (!event->isAccepted())
{
if (event->button() == Qt::LeftButton)
{
click_pos = mapToScene(event->pos());
click_pos_world = sceneToWorld(click_pos);
}
else
{
click_pos = event->pos();
}
dragged = false;
}
}
void Canvas::mouseMoveEvent(QMouseEvent *event)
{
QGraphicsView::mouseMoveEvent(event);
if (scene->mouseGrabberItem() == NULL)
{
if (event->buttons() == Qt::LeftButton)
{
pan(_click_pos_world - sceneToWorld(mapToScene(event->pos())));
}
else if (event->buttons() == Qt::RightButton)
{
QPointF d = _click_pos - event->pos();
pitch = fmin(0, fmax(-M_PI, pitch - 0.01 * d.y()));
yaw = fmod(yaw + M_PI - 0.01 * d.x(), M_PI*2) - M_PI;
_click_pos = event->pos();
update();
emit(viewChanged());
}
}
}
void Viewport::updateInfo()
{
// Then add a text label in the lower-left corner
// giving mouse coordinates (if we're near an axis)
if (getAxis().first && hover)
{
QPair<char, float> axis = getAxis();
QPointF mouse_pos = mapToScene(mapFromGlobal(QCursor::pos()));
if (!sceneRect().contains(mouse_pos))
axis.first = '\0';
auto p = sceneToWorld(mouse_pos);
int value = axis.second * 200;
mouse_info->setDefaultTextColor(QColor(value, value, value));
if (axis.first == 'z')
mouse_info->setPlainText(QString("X: %1\nY: %2")
.arg(p.x()).arg(p.y()));
else if (axis.first == 'y')
mouse_info->setPlainText(QString("X: %1\nZ: %2")
.arg(p.x()).arg(p.z()));
else if (axis.first == 'x')
mouse_info->setPlainText(QString("Y: %1\nZ: %2")
.arg(p.y()).arg(p.z()));
}
else
{
mouse_info->setPlainText(" \n ");
}
if (hover)
{
QString info;
auto proxies = getProxiesAtPosition(_current_pos);
if (proxies.size() > 0)
{
auto n = proxies.first()->getNode();
QString desc = QString::fromStdString(n->getName()); // + " (" + n->getTitle() + ")";
if (proxies.size() > 1)
info = QString("Current: %1, (%2 more below)")
.arg(desc).arg(proxies.size()-1);
else
info = QString("Current: %1").arg(desc);
}
else
{
info = QString("Current: <none>");
}
/* display scale, pitch, and yaw */
info += QString("\nScale: %1").arg(scale/100);
info += QString("\nPitch: %1").arg(getPitch());
info += QString("\nYaw: %1").arg(getYaw());
scene_info->setPlainText(info);
}
else
{
scene_info->setPlainText("");
}
}
