// Hub function for "deselect all", this passes the deselect call to the according functions
void RadiantSelectionSystem::deselectAll() {
if (Mode() == eComponent) {
setSelectedAllComponents(false);
}
else {
setSelectedAll(false);
}
}
void RadiantSelectionSystem::shutdownModule()
{
// greebo: Unselect everything so that no references to scene::Nodes
// are kept after shutdown, causing destruction issues.
setSelectedAll(false);
setSelectedAllComponents(false);
GlobalRenderSystem().detachRenderable(*this);
destroyStatic();
}
/* greebo: This gets called by the SelectObserver if the user drags a box and holds down
* any of the selection modifiers. Possible selection candidates are determined and selected/deselected
*/
void RadiantSelectionSystem::SelectArea(const View& view,
const Vector2& device_point,
const Vector2& device_delta,
SelectionSystem::EModifier modifier, bool face)
{
// If we are in replace mode, deselect all the components or previous selections
if (modifier == SelectionSystem::eReplace) {
if (face) {
setSelectedAllComponents(false);
}
else {
deselectAll();
}
}
{
// Construct the selection test according to the area the user covered with his drag
View scissored(view);
ConstructSelectionTest(scissored, Rectangle::ConstructFromArea(device_point, device_delta));
SelectionVolume volume(scissored);
// The posssible candidates go here
SelectionPool pool;
SelectablesList candidates;
if (face)
{
ComponentSelector selectionTester(pool, volume, eFace);
GlobalSceneGraph().foreachVisibleNodeInVolume(scissored, selectionTester);
// Load them all into the vector
for (SelectionPool::iterator i = pool.begin(); i != pool.end(); ++i)
{
candidates.push_back(i->second);
}
}
else {
testSelectScene(candidates, volume, scissored, Mode(), ComponentMode());
}
// Cycle through the selection pool and toggle the candidates, but only if we are in toggle mode
for (SelectablesList::iterator i = candidates.begin(); i != candidates.end(); i++) {
(*i)->setSelected(!(modifier == SelectionSystem::eToggle && (*i)->isSelected()));
}
}
}
/* greebo: This gets called by the SelectObserver if the user drags a box and holds down
* any of the selection modifiers. Possible selection candidates are determined and selected/deselected
*/
void RadiantSelectionSystem::SelectArea(const View& view,
const float device_point[2],
const float device_delta[2],
SelectionSystem::EModifier modifier, bool face)
{
// If we are in replace mode, deselect all the components or previous selections
if (modifier == SelectionSystem::eReplace) {
if (face) {
setSelectedAllComponents(false);
}
else {
deselectAll();
}
}
#if defined (DEBUG_SELECTION)
g_render_clipped.destroy();
#endif
{
// Construct the selection test according to the area the user covered with his drag
View scissored(view);
ConstructSelectionTest(scissored, SelectionBoxForArea(device_point, device_delta));
SelectionVolume volume(scissored);
// The posssible candidates go here
SelectionPool pool;
if (face) {
Scene_TestSelect_Component(pool, volume, scissored, eFace);
}
else {
Scene_TestSelect(pool, volume, scissored, Mode(), ComponentMode());
}
// Cycle through the selection pool and toggle the candidates, but only if we are in toggle mode
for (SelectionPool::iterator i = pool.begin(); i != pool.end(); ++i) {
(*i).second->setSelected(!(modifier == SelectionSystem::eToggle && (*i).second->isSelected()));
}
}
}
/* greebo: This gets called by SelectObserver if the user just clicks into the scene (without dragging)
* It checks for any possible targets (in the "line of click") and takes the actions according
* to the modifiers that are held down (Alt-Shift, etc.)
*/
void RadiantSelectionSystem::SelectPoint(const View& view,
const Vector2& device_point,
const Vector2& device_epsilon,
SelectionSystem::EModifier modifier,
bool face)
{
ASSERT_MESSAGE(fabs(device_point[0]) <= 1.0f && fabs(device_point[1]) <= 1.0f, "point-selection error");
// If the user is holding the replace modifiers (default: Alt-Shift), deselect the current selection
if (modifier == SelectionSystem::eReplace) {
if (face) {
setSelectedAllComponents(false);
}
else {
deselectAll();
}
}
{
View scissored(view);
// Construct a selection test according to a small box with 2*epsilon edge length
ConstructSelectionTest(scissored, Rectangle::ConstructFromPoint(device_point, device_epsilon));
// Create a new SelectionPool instance and fill it with possible candidates
SelectionVolume volume(scissored);
// The possible candidates are stored in the SelectablesSet
SelectablesList candidates;
if (face)
{
SelectionPool selector;
ComponentSelector selectionTester(selector, volume, eFace);
GlobalSceneGraph().foreachVisibleNodeInVolume(scissored, selectionTester);
// Load them all into the vector
for (SelectionPool::iterator i = selector.begin(); i != selector.end(); ++i)
{
candidates.push_back(i->second);
}
}
else {
testSelectScene(candidates, volume, scissored, Mode(), ComponentMode());
}
// Was the selection test successful (have we found anything to select)?
if (candidates.size() > 0) {
// Yes, now determine how we should interpret the click
switch (modifier) {
// If we are in toggle mode (Shift-Left-Click by default), just toggle the
// selection of the "topmost" item
case SelectionSystem::eToggle: {
Selectable* best = *candidates.begin();
// toggle selection of the object with least depth (=first in the list)
best->setSelected(!best->isSelected());
}
break;
// greebo: eReplace mode gets active as soon as the user holds the replace modifiers down
// and clicks (by default: Alt-Shift). eReplace is only active during the first click
// afterwards we are in cycle mode.
// if cycle mode not enabled, enable it
case SelectionSystem::eReplace: {
// select closest (=first in the list)
(*candidates.begin())->setSelected(true);
}
break;
// select the next object in the list from the one already selected
// greebo: eCycle is set if the user keeps holding the replace modifiers (Alt-Shift)
// and does NOT move the mouse between the clicks, otherwise we fall back into eReplace mode
// Note: The mode is set in SelectObserver::testSelect()
case SelectionSystem::eCycle: {
// Cycle through the selection pool and activate the item right after the currently selected
SelectablesList::iterator i = candidates.begin();
while (i != candidates.end()) {
if ((*i)->isSelected()) {
// unselect the currently selected one
(*i)->setSelected(false);
// check if there is a "next" item in the list, if not: select the first item
++i;
if (i != candidates.end()) {
(*i)->setSelected(true);
}
else {
(*candidates.begin())->setSelected(true);
}
break;
}
++i;
} // while
} // case
break;
default:
break;
} // switch
}
}
}
/* greebo: This gets called by SelectObserver if the user just clicks into the scene (without dragging)
* It checks for any possible targets (in the "line of click") and takes the actions according
* to the modifiers that are held down (Alt-Shift, etc.)
*/
void RadiantSelectionSystem::SelectPoint(const View& view,
const float device_point[2],
const float device_epsilon[2],
SelectionSystem::EModifier modifier,
bool face)
{
ASSERT_MESSAGE(fabs(device_point[0]) <= 1.0f && fabs(device_point[1]) <= 1.0f, "point-selection error");
// If the user is holding the replace modifiers (default: Alt-Shift), deselect the current selection
if (modifier == SelectionSystem::eReplace) {
if (face) {
setSelectedAllComponents(false);
}
else {
deselectAll();
}
}
#if defined (DEBUG_SELECTION)
g_render_clipped.destroy();
#endif
{
View scissored(view);
// Construct a selection test according to a small box with 2*epsilon edge length
ConstructSelectionTest(scissored, SelectionBoxForPoint(device_point, device_epsilon));
// Create a new SelectionPool instance and fill it with possible candidates
SelectionVolume volume(scissored);
// The possible candidates are stored in the SelectionPool
SelectionPool selector;
if (face) {
Scene_TestSelect_Component(selector, volume, scissored, eFace);
}
else {
Scene_TestSelect(selector, volume, scissored, Mode(), ComponentMode());
}
// Was the selection test successful (have we found anything to select)?
if (!selector.failed()) {
// Yes, now determine how we should interpret the click
switch (modifier) {
// If we are in toggle mode (Shift-Left-Click by default), just toggle the
// selection of the "topmost" item
case SelectionSystem::eToggle: {
SelectableSortedSet::iterator best = selector.begin();
// toggle selection of the object with least depth (=first in the list)
if ((*best).second->isSelected())
(*best).second->setSelected(false);
else
(*best).second->setSelected(true);
}
break;
// greebo: eReplace mode gets active as soon as the user holds the replace modifiers down
// and clicks (by default: Alt-Shift). eReplace is only active during the first click
// afterwards we are in cycle mode.
// if cycle mode not enabled, enable it
case SelectionSystem::eReplace: {
// select closest (=first in the list)
(*selector.begin()).second->setSelected(true);
}
break;
// select the next object in the list from the one already selected
// greebo: eCycle is set if the user keeps holding the replace modifiers (Alt-Shift)
// and does NOT move the mouse between the clicks, otherwise we fall back into eReplace mode
// Note: The mode is set in SelectObserver::testSelect()
case SelectionSystem::eCycle: {
// Cycle through the selection pool and activate the item right after the currently selected
SelectionPool::iterator i = selector.begin();
while (i != selector.end()) {
if ((*i).second->isSelected()) {
// unselect the currently selected one
(*i).second->setSelected(false);
// check if there is a "next" item in the list, if not: select the first item
++i;
if (i != selector.end()) {
i->second->setSelected(true);
}
else {
selector.begin()->second->setSelected(true);
}
break;
}
++i;
} // while
} // case
break;
default:
break;
} // switch
}
}
}
