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0032122: Samples - handle WASD keys in WebGL sample

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This commit is contained in:
kgv 2021-02-07 11:03:33 +03:00 committed by bugmaster
parent 1ff3663c91
commit e03a03fdc2
2 changed files with 141 additions and 20 deletions
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134
samples/webgl/WasmOcctView.cpp
View File

@ -137,6 +137,28 @@ WasmOcctView::WasmOcctView()
: myDevicePixelRatio (1.0f),
myUpdateRequests (0)
{
addActionHotKeys (Aspect_VKey_NavForward, Aspect_VKey_W, Aspect_VKey_W | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavBackward , Aspect_VKey_S, Aspect_VKey_S | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavSlideLeft, Aspect_VKey_A, Aspect_VKey_A | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavSlideRight, Aspect_VKey_D, Aspect_VKey_D | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavRollCCW, Aspect_VKey_Q, Aspect_VKey_Q | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavRollCW, Aspect_VKey_E, Aspect_VKey_E | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavSpeedIncrease, Aspect_VKey_Plus, Aspect_VKey_Plus | Aspect_VKeyFlags_SHIFT,
Aspect_VKey_Equal,
Aspect_VKey_NumpadAdd, Aspect_VKey_NumpadAdd | Aspect_VKeyFlags_SHIFT);
addActionHotKeys (Aspect_VKey_NavSpeedDecrease, Aspect_VKey_Minus, Aspect_VKey_Minus | Aspect_VKeyFlags_SHIFT,
Aspect_VKey_NumpadSubtract, Aspect_VKey_NumpadSubtract | Aspect_VKeyFlags_SHIFT);
// arrow keys conflict with browser page scrolling, so better be avoided in non-fullscreen mode
addActionHotKeys (Aspect_VKey_NavLookUp, Aspect_VKey_Numpad8); // Aspect_VKey_Up
addActionHotKeys (Aspect_VKey_NavLookDown, Aspect_VKey_Numpad2); // Aspect_VKey_Down
addActionHotKeys (Aspect_VKey_NavLookLeft, Aspect_VKey_Numpad4); // Aspect_VKey_Left
addActionHotKeys (Aspect_VKey_NavLookRight, Aspect_VKey_Numpad6); // Aspect_VKey_Right
addActionHotKeys (Aspect_VKey_NavSlideLeft, Aspect_VKey_Numpad1); // Aspect_VKey_Left |Aspect_VKeyFlags_SHIFT
addActionHotKeys (Aspect_VKey_NavSlideRight, Aspect_VKey_Numpad3); // Aspect_VKey_Right|Aspect_VKeyFlags_SHIFT
addActionHotKeys (Aspect_VKey_NavSlideUp, Aspect_VKey_Numpad9); // Aspect_VKey_Up |Aspect_VKeyFlags_SHIFT
addActionHotKeys (Aspect_VKey_NavSlideDown, Aspect_VKey_Numpad7); // Aspect_VKey_Down |Aspect_VKeyFlags_SHIFT
}
// ================================================================
@ -430,6 +452,14 @@ void WasmOcctView::handleViewRedraw (const Handle(AIS_InteractiveContext)& theCt
{
myUpdateRequests = 0;
AIS_ViewController::handleViewRedraw (theCtx, theView);
for (NCollection_DataMap<unsigned int, Aspect_VKey>::Iterator aNavKeyIter (myNavKeyMap);
!myToAskNextFrame && aNavKeyIter.More(); aNavKeyIter.Next())
{
const Aspect_VKey aVKey = aNavKeyIter.Key() & ~Aspect_VKeyFlags_ALL;
myToAskNextFrame = myKeys.IsKeyDown (aVKey);
}
if (myToAskNextFrame)
{
// ask more frames
@ -696,6 +726,43 @@ EM_BOOL WasmOcctView::onTouchEvent (int theEventType, const EmscriptenTouchEvent
return hasUpdates || !myTouchPoints.IsEmpty() ? EM_TRUE : EM_FALSE;
}
// ================================================================
// Function : navigationKeyModifierSwitch
// Purpose :
// ================================================================
bool WasmOcctView::navigationKeyModifierSwitch (unsigned int theModifOld,
unsigned int theModifNew,
double theTimeStamp)
{
bool hasActions = false;
for (unsigned int aKeyIter = 0; aKeyIter < Aspect_VKey_ModifiersLower; ++aKeyIter)
{
if (!myKeys.IsKeyDown (aKeyIter))
{
continue;
}
Aspect_VKey anActionOld = Aspect_VKey_UNKNOWN, anActionNew = Aspect_VKey_UNKNOWN;
myNavKeyMap.Find (aKeyIter | theModifOld, anActionOld);
myNavKeyMap.Find (aKeyIter | theModifNew, anActionNew);
if (anActionOld == anActionNew)
{
continue;
}
if (anActionOld != Aspect_VKey_UNKNOWN)
{
myKeys.KeyUp (anActionOld, theTimeStamp);
}
if (anActionNew != Aspect_VKey_UNKNOWN)
{
hasActions = true;
myKeys.KeyDown (anActionNew, theTimeStamp);
}
}
return hasActions;
}
// ================================================================
// Function : onKeyDownEvent
// Purpose :
@ -714,15 +781,27 @@ EM_BOOL WasmOcctView::onKeyDownEvent (int theEventType, const EmscriptenKeyboard
{
return EM_FALSE;
}
if (theEvent->repeat == EM_FALSE)
if (theEvent->repeat == EM_TRUE)
{
myKeys.KeyDown (aVKey, aTimeStamp);
return EM_FALSE;
}
if (Aspect_VKey2Modifier (aVKey) == 0)
const unsigned int aModifOld = myKeys.Modifiers();
AIS_ViewController::KeyDown (aVKey, aTimeStamp);
const unsigned int aModifNew = myKeys.Modifiers();
if (aModifNew != aModifOld
&& navigationKeyModifierSwitch (aModifOld, aModifNew, aTimeStamp))
{
// normal key
// modifier key just pressed
}
Aspect_VKey anAction = Aspect_VKey_UNKNOWN;
if (myNavKeyMap.Find (aVKey | myKeys.Modifiers(), anAction)
&& anAction != Aspect_VKey_UNKNOWN)
{
AIS_ViewController::KeyDown (anAction, aTimeStamp);
UpdateView();
}
return EM_FALSE;
}
@ -746,28 +825,43 @@ EM_BOOL WasmOcctView::onKeyUpEvent (int theEventType, const EmscriptenKeyboardEv
return EM_FALSE;
}
if (theEvent->repeat == EM_TRUE)
const unsigned int aModifOld = myKeys.Modifiers();
AIS_ViewController::KeyUp (aVKey, aTimeStamp);
Aspect_VKey anAction = Aspect_VKey_UNKNOWN;
if (myNavKeyMap.Find (aVKey | myKeys.Modifiers(), anAction)
&& anAction != Aspect_VKey_UNKNOWN)
{
return EM_FALSE;
AIS_ViewController::KeyUp (anAction, aTimeStamp);
UpdateView();
}
const unsigned int aModif = myKeys.Modifiers();
myKeys.KeyUp (aVKey, aTimeStamp);
if (Aspect_VKey2Modifier (aVKey) == 0)
const unsigned int aModifNew = myKeys.Modifiers();
if (aModifNew != aModifOld
&& navigationKeyModifierSwitch (aModifOld, aModifNew, aTimeStamp))
{
// normal key released
switch (aVKey | aModif)
// modifier key released
}
return processKeyPress (aVKey | aModifNew) ? EM_TRUE : EM_FALSE;
}
//==============================================================================
//function : processKeyPress
//purpose :
//==============================================================================
bool WasmOcctView::processKeyPress (Aspect_VKey theKey)
{
switch (theKey)
{
case Aspect_VKey_F:
{
case Aspect_VKey_F:
{
myView->FitAll (0.01, false);
myView->Invalidate();
updateView();
return EM_TRUE;
}
myView->FitAll (0.01, false);
UpdateView();
return true;
}
}
return EM_FALSE;
return false;
}
// ================================================================

27
samples/webgl/WasmOcctView.h
View File

@ -209,10 +209,37 @@ private:
static EM_BOOL onKeyUpCallback (int theEventType, const EmscriptenKeyboardEvent* theEvent, void* theView)
{ return ((WasmOcctView* )theView)->onKeyUpEvent (theEventType, theEvent); }
private:
//! Register hot-keys for specified Action.
void addActionHotKeys (Aspect_VKey theAction,
unsigned int theHotKey1 = 0,
unsigned int theHotKey2 = 0,
unsigned int theHotKey3 = 0,
unsigned int theHotKey4 = 0,
unsigned int theHotKey5 = 0)
{
if (theHotKey1 != 0) { myNavKeyMap.Bind (theHotKey1, theAction); }
if (theHotKey2 != 0) { myNavKeyMap.Bind (theHotKey2, theAction); }
if (theHotKey3 != 0) { myNavKeyMap.Bind (theHotKey3, theAction); }
if (theHotKey4 != 0) { myNavKeyMap.Bind (theHotKey4, theAction); }
if (theHotKey5 != 0) { myNavKeyMap.Bind (theHotKey5, theAction); }
}
//! Handle navigation keys.
bool navigationKeyModifierSwitch (unsigned int theModifOld,
unsigned int theModifNew,
double theTimeStamp);
//! Handle hot-key.
bool processKeyPress (Aspect_VKey theKey);
private:
NCollection_IndexedDataMap<TCollection_AsciiString, Handle(AIS_InteractiveObject)> myObjects; //!< map of named objects
NCollection_DataMap<unsigned int, Aspect_VKey> myNavKeyMap; //!< map of Hot-Key (key+modifiers) to Action
Handle(AIS_InteractiveContext) myContext; //!< interactive context
Handle(V3d_View) myView; //!< 3D view
Handle(Prs3d_TextAspect) myTextStyle; //!< text style for OSD elements