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Experimental mouse event state machine for 3d editing, starting with drag & drop objects.

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This commit is contained in:
cc9cii 2014-10-28 06:01:19 +11:00
parent 815e832dbb
commit a01a921644
3 changed files with 239 additions and 10 deletions
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228
apps/opencs/view/render/pagedworldspacewidget.cpp
View file

@ -259,6 +259,114 @@ bool CSVRender::PagedWorldspaceWidget::adjustCells()
return modified;
}
// mouse picking
// FIXME: need to virtualise mouse buttons
//
// State machine:
//
// [default] mousePressEvent->check if the mouse is pointing at an object
// if yes, go to [grab] else stay at [default]
//
// [grab] mouseReleaseEvent->if same button and new obj, go to [edit]
// mouseMoveEvent->if same button, create collision planes then go to [drag]
// other mouse events or buttons, go back to [default] (i.e. like 'cancel')
//
// [drag] mouseReleaseEvent->if same button, place the object at the new
// location, update the document then go to [edit]
// mouseMoveEvent->update position to the user based on ray to the collision
// planes and render the object at the new location, but do not update
// the document yet
//
// [edit] TODO, probably fine positional adjustments or rotations; clone/delete?
//
//
// press press (obj)
// [default] --------> [grab] <-------------------- [edit]
// ^ (obj) | | ------> [drag] -----> ^
// | | | move ^ | release |
// | | | | | |
// | | | +-+ |
// | | | move |
// +----------------+ +--------------------------+
// release release
// (same obj) (new obj)
//
//
void CSVRender::PagedWorldspaceWidget::mouseMoveEvent (QMouseEvent *event)
{
if(event->buttons() & Qt::RightButton)
{
switch(mMouseState)
{
case Mouse_Grab:
{
// FIXME: check if min elapsed time, mTimer.elapsed();
// then stop/disable the timer
mMouseState = Mouse_Drag;
//std::cout << "grab->drag" << std::endl;
/* FALL_THROUGH */
}
case Mouse_Drag:
{
// FIXME: don't update less than a quantum
//QPoint diff = mOldPos-event->pos();
mOldPos = event->pos();
//std::cout << QString::number(event->pos().x()).toStdString() << ", "
//<< QString::number(event->pos().y()).toStdString() << std::endl;
// FIXME: ray test against the plane to provide feedback to the user
// the relative movement of the object on the x-z plane
break;
}
case Mouse_Edit:
case Mouse_Default:
{
break;
}
/* NO_DEFAULT_CASE */
}
}
SceneWidget::mouseMoveEvent(event);
}
void CSVRender::PagedWorldspaceWidget::mousePressEvent (QMouseEvent *event)
{
if(event->buttons() & Qt::RightButton)
{
switch(mMouseState)
{
case Mouse_Grab:
case Mouse_Drag:
{
break; // error event, ignore
}
case Mouse_Edit:
case Mouse_Default:
{
if(!getCamera()->getViewport())
break;
std::pair<std::string, Ogre::Vector3> result = isObjectUnderCursor(
(float) event->x() / getCamera()->getViewport()->getActualWidth(),
(float) event->y() / getCamera()->getViewport()->getActualHeight());
if(result.first != "")
{
// FIXME: setup a x-z plane at the y position of the object
// FIXME: ray test agaist the plane to get a starting position
// of the mouse in relation to the object position
mMouseState = Mouse_Grab;
//std::cout << "default/edit->grab" << std::endl;
// FIXME: start QElapsedTimer mTimer.start();
}
break;
}
/* NO_DEFAULT_CASE */
}
}
//SceneWidget::mousePressEvent(event);
}
void CSVRender::PagedWorldspaceWidget::mouseReleaseEvent (QMouseEvent *event)
{
if(event->button() == Qt::RightButton)
@ -274,14 +382,89 @@ void CSVRender::PagedWorldspaceWidget::mouseReleaseEvent (QMouseEvent *event)
}
}
// mouse picking
// FIXME: need to virtualise mouse buttons
if(!getCamera()->getViewport())
{
SceneWidget::mouseReleaseEvent(event);
return;
debugMousePicking((float) event->x() / getCamera()->getViewport()->getActualWidth(),
(float) event->y() / getCamera()->getViewport()->getActualHeight());
}
// FIXME: skip this if overlay clicked above
// FIXME: stop/disable the timer
switch(mMouseState)
{
case Mouse_Grab:
{
std::pair<std::string, Ogre::Vector3> result = isObjectUnderCursor(
(float) event->x() / getCamera()->getViewport()->getActualWidth(),
(float) event->y() / getCamera()->getViewport()->getActualHeight());
if(result.first != "")
{
if(result.first == mCurrentObj)
{
mMouseState = Mouse_Default;
//std::cout << "grab->default" << std::endl;
mCurrentObj = "";
}
else
{
mMouseState = Mouse_Edit;
//std::cout << "grab->edit" << std::endl;
mCurrentObj = result.first;
// print some debug info
std::cout << "ReferenceId: " << result.first << std::endl;
const CSMWorld::RefCollection& references = mDocument.getData().getReferences();
int index = references.searchId(result.first);
if (index != -1)
{
int columnIndex =
references.findColumnIndex(CSMWorld::Columns::ColumnId_ReferenceableId);
std::cout << " index: " + QString::number(index).toStdString()
+", column index: " + QString::number(columnIndex).toStdString()
<< std::endl;
}
}
// highlight current object
std::string sceneNode =
CSVWorld::PhysicsSystem::instance()->referenceToSceneNode(result.first);
uint32_t visibilityMask = getCamera()->getViewport()->getVisibilityMask();
bool ignoreObjects = !(visibilityMask & (uint32_t)CSVRender::Element_Reference);
if(!ignoreObjects && getSceneManager()->hasSceneNode(sceneNode))
{
CSMSettings::UserSettings &userSettings = CSMSettings::UserSettings::instance();
if(userSettings.setting("debug/mouse-picking", QString("false")) == "true" ? true : false)
updateSelectionHighlight(sceneNode, result.second);
}
flagAsModified();
}
break;
}
case Mouse_Drag:
{
// ray test against the plane, then destroy the plane
// FIXME: update document
std::cout << "final position" << std::endl;
// FIXME: highlight current object
mMouseState = Mouse_Edit;
//std::cout << "drag->edit" << std::endl;
break;
}
case Mouse_Edit:
case Mouse_Default:
{
// probably terrain
debugMousePicking(
(float) event->x() / getCamera()->getViewport()->getActualWidth(),
(float) event->y() / getCamera()->getViewport()->getActualHeight());
break;
}
/* NO_DEFAULT_CASE */
}
}
SceneWidget::mouseReleaseEvent(event);
}
void CSVRender::PagedWorldspaceWidget::mouseDoubleClickEvent (QMouseEvent *event)
@ -302,6 +485,14 @@ void CSVRender::PagedWorldspaceWidget::mouseDoubleClickEvent (QMouseEvent *event
flagAsModified();
}
}
//SceneWidget::mouseDoubleClickEvent(event);
}
void CSVRender::PagedWorldspaceWidget::wheelEvent (QWheelEvent *event)
{
// FIXME: add wheel event to move the object along the y axis during Mouse_Drag or
// Mouse_Grab
SceneWidget::wheelEvent(event);
}
void CSVRender::PagedWorldspaceWidget::updateOverlay()
@ -405,7 +596,8 @@ std::string CSVRender::PagedWorldspaceWidget::getStartupInstruction()
CSVRender::PagedWorldspaceWidget::PagedWorldspaceWidget (QWidget* parent, CSMDoc::Document& document)
: WorldspaceWidget (document, parent), mDocument (document), mWorldspace ("std::default"),
mControlElements(NULL), mDisplayCellCoord(true), mOverlayMask(NULL)
mControlElements(NULL), mDisplayCellCoord(true), mOverlayMask(NULL),
mCurrentObj(""), mMouseState(Mouse_Default), mOldPos(0,0)
{
QAbstractItemModel *cells =
document.getData().getTableModel (CSMWorld::UniversalId::Type_Cells);
@ -607,6 +799,30 @@ void CSVRender::PagedWorldspaceWidget::cellAdded (const QModelIndex& index, int
flagAsModified();
}
std::pair<std::string, Ogre::Vector3> CSVRender::PagedWorldspaceWidget::isObjectUnderCursor(float mouseX, float mouseY)
{
std::pair<std::string, Ogre::Vector3> result = CSVWorld::PhysicsSystem::instance()->castRay(
mouseX, mouseY, NULL, NULL, getCamera());
if(result.first != "")
{
QString name = QString(result.first.c_str());
if(!name.contains(QRegExp("^HeightField")))
{
std::string sceneNode =
CSVWorld::PhysicsSystem::instance()->referenceToSceneNode(result.first);
uint32_t visibilityMask = getCamera()->getViewport()->getVisibilityMask();
bool ignoreObjects = !(visibilityMask & (uint32_t)CSVRender::Element_Reference);
if(!ignoreObjects && getSceneManager()->hasSceneNode(sceneNode))
{
return result;
}
}
}
return std::make_pair("", Ogre::Vector3(0,0,0));
}
void CSVRender::PagedWorldspaceWidget::debugMousePicking(float mouseX, float mouseY)
{

15
apps/opencs/view/render/pagedworldspacewidget.hpp
View file

@ -28,6 +28,16 @@ namespace CSVRender
OverlayMask *mOverlayMask;
std::map<std::string, std::vector<std::string> > mSelectedEntities;
enum MouseState {
Mouse_Grab,
Mouse_Drag,
Mouse_Edit,
Mouse_Default
};
MouseState mMouseState;
QPoint mOldPos;
std::string mCurrentObj;
private:
std::pair<int, int> getCoordinatesFromId(const std::string& record) const;
@ -52,6 +62,7 @@ namespace CSVRender
virtual std::string getStartupInstruction();
std::pair<std::string, Ogre::Vector3> isObjectUnderCursor(float mouseX, float mouseY);
void debugMousePicking(float mouseX, float mouseY);
void updateSelectionHighlight(std::string sceneNode, const Ogre::Vector3 &position);
@ -85,9 +96,11 @@ namespace CSVRender
virtual void updateOverlay();
virtual void mouseMoveEvent (QMouseEvent *event);
virtual void mousePressEvent (QMouseEvent *event);
virtual void mouseReleaseEvent (QMouseEvent *event);
virtual void mouseDoubleClickEvent (QMouseEvent *event);
virtual void wheelEvent (QWheelEvent *event);
signals:

8
apps/opencs/view/render/scenewidget.hpp
View file

@ -71,6 +71,10 @@ namespace CSVRender
virtual void mouseReleaseEvent (QMouseEvent *event);
virtual void mouseMoveEvent (QMouseEvent *event);
void wheelEvent (QWheelEvent *event);
private:
void paintEvent(QPaintEvent* e);
void resizeEvent(QResizeEvent* e);
@ -82,12 +86,8 @@ namespace CSVRender
void focusOutEvent (QFocusEvent *event);
void wheelEvent (QWheelEvent *event);
void leaveEvent (QEvent *event);
void mouseMoveEvent (QMouseEvent *event);
void updateOgreWindow();
void setLighting (Lighting *lighting);