ToUnicodeEx not printing "Greater Than" - c++

I wrote a function which processes the user keyboard in order to write text in an app.
In order to do that I use the ToUnicodeEx function which uses an array of Key states.
The function is working perfectly fine for every possible input, except for one : I cannot display the ">" sign, which is supposed to be the combination of "SHIFT + <" : it displays the "<" sign instead, as if the SHIFT key was not pressed, whereas it knows it it pressed.
Has somebody already experienced the same and knows what the problem is?
You will find my function code below :
void MyFunction(bool bCapsLockDown)
{
IOClass io = GetMyIOInstance();
HKL layout = GetKeyboardLayout( 0 );
uchar uKeyboardState[256];
WCHAR oBuffer[5] = {};
//Initialization of KeyBoardState
for (uint i = 0; i < 256; ++i)
{
uKeyBoardState[i] = 0;
}
// Use of my ConsultKeyState to get the status of pressed keys
if ( ConsultKeyState( VK_SHIFT ) || bCapsLockDown )
{
uKeyboardState[VK_CAPITAL] = 0xff;
}
if ( ConsultKeyState( VK_CONTROL ) )
{
uKeyboardState[VK_CONTROL] = 0xff;
}
if ( ConsultKeyState( VK_MENU ) )
{
uKeyboardState[VK_MENU] = 0xff;
}
if ( ConsultKeyState( VK_RMENU ) )
{
uKeyboardState[VK_MENU] = 0xff;
uKeyboardState[VK_CONTROL] = 0xff;
}
for ( uint iVK = 0; iVK < 256; ++iVK )
{
bool bKeyDown = ConsultKeyState( iVK ) != 0;
uint iSC = MapVirtualKeyEx( iVK, MAPVK_VK_TO_VSC, layout );
bool bKeyAlreadyDown = io.KeysDown[iVK];
io.KeysDown[iVK] = bKeyDown;
if ( io.KeysDown[iVK] && bKeyAlreadyDown == false )
{
int iRet = ToUnicodeEx( iVK, iSC, uKeyboardState, (LPWSTR)oBuffer, 4, 0, layout );
if( iRet > 0 && (iswgraph( (unsigned short) oBuffer[0] ) || oBuffer[0] == ' ') )
io.AddInputCharacter( (unsigned short) oBuffer[0] );
}
}
}
Edit :
To summarize, my question is :
What would be the good combination VirtualKey + KeyBoardState to get a ">" displayed?

The problem is that shift and caps lock do not have the same effect on a keyboard. For example, (on a UK keyboard) pressing shift+1 = !, but pressing 1 with caps lock on still give you 1.
Your code currently treats them the same, though, and it is using VK_CAPITAL in both cases. This will give you the same effect as if caps lock were on, which is not what you want in this case.
The solution is therefore to break out your logic and use VK_SHIFT when you really want shift to be pressed and VK_CAPITAL when you want caps lock to be active.

Related

OpenVR - IVRSystem::GetControllerState always returns empty structs

I've been following Kamran Bigdely-Shamloo's article on how to get positional information from the HTC Vive and it has worked well so far. My next step was to "listen" to button presses. I've read the documentation and it says here that all I need to do is query IVRSystem::GetControllerStateand it'll return a
"struct with the current state of the controller"
This struct however always contains variables that have the 0 value. The following function is called in a while (true) loop from the main function.
bool CMainApplication::HandleInput()
{
SDL_Event sdlEvent;
bool bRet = false;
while ( SDL_PollEvent( &sdlEvent ) != 0 )
{
if ( sdlEvent.type == SDL_QUIT )
{
bRet = true;
}
else if ( sdlEvent.type == SDL_KEYDOWN )
{
if ( sdlEvent.key.keysym.sym == SDLK_ESCAPE
|| sdlEvent.key.keysym.sym == SDLK_q )
{
bRet = true;
}
if( sdlEvent.key.keysym.sym == SDLK_c )
{
m_bShowCubes = !m_bShowCubes;
}
}
}
// Process SteamVR events
// Periodically returns an event of type 404 ("VREvent_SceneApplicationChanged = 404, // data is process - The App actually drawing the scene changed (usually to or from the compositor)"
vr::VREvent_t event;
vr::VREvent_Controller_t controllerEvent;
std::chrono::milliseconds ms4;
while( m_pHMD->PollNextEvent( &event, sizeof( event ) ) )
{
ms4 = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()
);
ProcessVREvent( &event);
printPositionalData(&event, ms4);
}
vr::VRControllerState_t state;
// Check every device attached, usually it's four devices
// Second if statement is never reached
for (int i = 0; i < 1000; i++) {
if (m_pHMD->GetControllerState(i, &state, sizeof(state))) {
dprintf("%d", i);
if (state.ulButtonPressed != 0 || state.unPacketNum != 0 || state.ulButtonTouched != 0) {
dprintf("Some action?");
}
}
}
dprintf("\n");
// Process SteamVR action state
// UpdateActionState is called each frame to update the state of the actions themselves. The application
// controls which action sets are active with the provided array of VRActiveActionSet_t structs.
vr::VRActiveActionSet_t actionSet = { 0 };
actionSet.ulActionSet = m_actionsetDemo;
vr::VRInput()->UpdateActionState( &actionSet, sizeof(actionSet), 1 );
m_bShowCubes = !GetDigitalActionState( m_actionHideCubes );
vr::VRInputValueHandle_t ulHapticDevice;
if ( GetDigitalActionRisingEdge( m_actionTriggerHaptic, &ulHapticDevice ) )
{
if ( ulHapticDevice == m_rHand[Left].m_source )
{
vr::VRInput()->TriggerHapticVibrationAction( m_rHand[Left].m_actionHaptic, 0, 1, 4.f, 1.0f, vr::k_ulInvalidInputValueHandle );
}
if ( ulHapticDevice == m_rHand[Right].m_source )
{
vr::VRInput()->TriggerHapticVibrationAction( m_rHand[Right].m_actionHaptic, 0, 1, 4.f, 1.0f, vr::k_ulInvalidInputValueHandle );
}
}
vr::InputAnalogActionData_t analogData;
if ( vr::VRInput()->GetAnalogActionData( m_actionAnalongInput, &analogData, sizeof( analogData ), vr::k_ulInvalidInputValueHandle ) == vr::VRInputError_None && analogData.bActive )
{
m_vAnalogValue[0] = analogData.x;
m_vAnalogValue[1] = analogData.y;
}
m_rHand[Left].m_bShowController = true;
m_rHand[Right].m_bShowController = true;
vr::VRInputValueHandle_t ulHideDevice;
if ( GetDigitalActionState( m_actionHideThisController, &ulHideDevice ) )
{
if ( ulHideDevice == m_rHand[Left].m_source )
{
m_rHand[Left].m_bShowController = false;
}
if ( ulHideDevice == m_rHand[Right].m_source )
{
m_rHand[Right].m_bShowController = false;
}
}
for ( EHand eHand = Left; eHand <= Right; ((int&)eHand)++ )
{
vr::InputPoseActionData_t poseData;
if ( vr::VRInput()->GetPoseActionData( m_rHand[eHand].m_actionPose, vr::TrackingUniverseStanding, 0, &poseData, sizeof( poseData ), vr::k_ulInvalidInputValueHandle ) != vr::VRInputError_None
|| !poseData.bActive || !poseData.pose.bPoseIsValid )
{
m_rHand[eHand].m_bShowController = false;
}
else
{
m_rHand[eHand].m_rmat4Pose = ConvertSteamVRMatrixToMatrix4( poseData.pose.mDeviceToAbsoluteTracking );
vr::InputOriginInfo_t originInfo;
if ( vr::VRInput()->GetOriginTrackedDeviceInfo( poseData.activeOrigin, &originInfo, sizeof( originInfo ) ) == vr::VRInputError_None
&& originInfo.trackedDeviceIndex != vr::k_unTrackedDeviceIndexInvalid )
{
std::string sRenderModelName = GetTrackedDeviceString( originInfo.trackedDeviceIndex, vr::Prop_RenderModelName_String );
if ( sRenderModelName != m_rHand[eHand].m_sRenderModelName )
{
m_rHand[eHand].m_pRenderModel = FindOrLoadRenderModel( sRenderModelName.c_str() );
m_rHand[eHand].m_sRenderModelName = sRenderModelName;
}
}
}
}
return bRet;
m_pHMD is initalized as follows:
vr::IVRSystem *m_pHMD;
....
m_pHMD = vr::VR_Init( &eError, vr::VRApplication_Background );
I must be doing something wrong because in the following snippet, the if statement is passed only for the first four iterations, which should be a controller, the vive tracker, the headset and the lighthouses. This tells me that I am able to access these states, but I am somehow not able to read the information.
for (int i = 0; i < 1000; i++) {
if (m_pHMD->GetControllerState(i, &state, sizeof(state))) {
dprintf("%d", i);
if (state.ulButtonPressed != 0 || state.unPacketNum != 0 || state.ulButtonTouched != 0) {
dprintf("Some action?");
}
}
I can't imagine its a bug, so my guess is that my configuration is faulty, or I'm doing the wrong query.
Any help is greatly appreciated!
Apparently I was making two mistakes.
Mistake #1 was that I was using the wrong sample file. I used hellovr_opengl from the OpenVr sample folder, but instead hellovr_dx12 was the working solution. It must have a different kind of configration as well, since I copied a function which was working into the hellovr_opengl project and there, it did not work! Then I copied the functions I added to the hellovr_dx12 project and was able to get the controller states of the Vive controller.
However, I wanted to get the states of the Vive Tracker, which didn't work. After some googling I found out about an issue with the current SteamVR driver, so I reverted it back to a beta hoftix, which solved the Vive Tracker issue for me.
You have to call;
vr::VRInput()->SetActionManifestPath

How can I stop wxProgressDialog re-sizing?

I am using a wxProgressDialog on Windows. Whenever I change the text in the dialog the dialog box re-sizes to best accommodate the text, this leads to the dialog frequently re-sizing which looks terrible.
I tried SetMinSize and SetSizeHints but these seemed to have no effect. SetSize also seems not to work.
(For info, the dialog is show progress of file transfer. As each file is transferred its full path is displayed. These vary greatly leading the continual re-sizing.)
My code is based on this code from the samples:
static const int max = 100;
wxProgressDialog dialog("Progress dialog example",
// "Reserve" enough space for the multiline
// messages below, we'll change it anyhow
// immediately in the loop below
wxString(' ', 100) + "\n\n\n\n",
max, // range
this, // parent
wxPD_CAN_ABORT |
wxPD_CAN_SKIP |
wxPD_APP_MODAL |
//wxPD_AUTO_HIDE | // -- try this as well
wxPD_ELAPSED_TIME |
wxPD_ESTIMATED_TIME |
wxPD_REMAINING_TIME |
wxPD_SMOOTH // - makes indeterminate mode bar on WinXP very small
);
bool cont = true;
for ( int i = 0; i <= max; i++ )
{
wxString msg;
// test both modes of wxProgressDialog behaviour: start in
// indeterminate mode but switch to the determinate one later
const bool determinate = i > max/2;
if ( i == max )
{
msg = "That's all, folks!\n"
"\n"
"Nothing to see here any more.";
}
else if ( !determinate )
{
msg = "Testing indeterminate mode\n"
"\n"
"This mode allows you to show to the user\n"
"that something is going on even if you don't know\n"
"when exactly will you finish.";
}
else if ( determinate )
{
msg = "Now in standard determinate mode\n"
"\n"
"This is the standard usage mode in which you\n"
"update the dialog after performing each new step of work.\n"
"It requires knowing the total number of steps in advance.";
}
// will be set to true if "Skip" button was pressed
bool skip = false;
if ( determinate )
{
cont = dialog.Update(i, msg, &skip);
}
else
{
cont = dialog.Pulse(msg, &skip);
}
// each skip will move progress about quarter forward
if ( skip )
{
i += max/4;
if ( i >= 100 )
i = 99;
}
if ( !cont )
{
if ( wxMessageBox(wxT("Do you really want to cancel?"),
wxT("Progress dialog question"), // caption
wxYES_NO | wxICON_QUESTION) == wxYES )
break;
cont = true;
dialog.Resume();
}
wxMilliSleep(200);
}
if ( !cont )
{
wxLogStatus(wxT("Progress dialog aborted!"));
}
else
{
wxLogStatus(wxT("Countdown from %d finished"), max);
}
}
Select a size for the file path display. If the path is shorter, add blanks, if longer replace with ellipses ( ... )
wxControl::Ellipsize is useful for this ( http://docs.wxwidgets.org/3.1/classwx_control.html#a0bb834cae2a8986aceddb89f84ef4ed1 )
If you want a fixed size, you need to use wxGenericProgressDialog, there doesn't seem to be any way of preventing the native dialog, used by default under the systems that support it (Vista and later), of adapting its size to its contents.

Getting digital signature from mmc.exe at windows 8

I have an application that tries to verify the mmc.exe (services) signature. (the context of the application I think is irrelevant) I am trying with winapi function which both fails with
WinVerifyTrust. I get TRUST_E_BAD_DIGEST when I am trying with verification from catalog, and
TRUST_E_NOSIGNATURE when trying from file info. it is very important to mention that my function succeeds on win7, XP but fails on win8.
this is the code snippet for the function
CATALOG_INFO InfoStruct = {0};
InfoStruct.cbStruct = sizeof(CATALOG_INFO);
WINTRUST_CATALOG_INFO WintrustCatalogStructure = {0};
WintrustCatalogStructure.cbStruct = sizeof(WINTRUST_CATALOG_INFO);
WINTRUST_FILE_INFO WintrustFileStructure = {0};
WintrustFileStructure.cbStruct = sizeof(WINTRUST_FILE_INFO);
GUID ActionGuid = WINTRUST_ACTION_GENERIC_VERIFY_V2;
//Get a context for signature verification.
HCATADMIN Context = NULL;
if(!::CryptCATAdminAcquireContext(&Context, NULL, 0) ){
return false;
}
//Open file.
cx_handle hFile(::CreateFileW(filename_.c_str(), GENERIC_READ, 7, NULL, OPEN_EXISTING, 0, NULL));
if( INVALID_HANDLE_VALUE == (HANDLE)hFile )
{
CryptCATAdminReleaseContext(Context, 0);
return false;
}
//Get the size we need for our hash.
DWORD HashSize = 0;
::CryptCATAdminCalcHashFromFileHandle(hFile, &HashSize, NULL, 0);
if( HashSize == 0 )
{
//0-sized has means error!
::CryptCATAdminReleaseContext(Context, 0);
return false;
}
//Allocate memory.
buffer hashbuf(HashSize);
//Actually calculate the hash
if( !CryptCATAdminCalcHashFromFileHandle(hFile, &HashSize, hashbuf.data, 0) )
{
CryptCATAdminReleaseContext(Context, 0);
return false;
}
//Convert the hash to a string.
buffer MemberTag(((HashSize * 2) + 1) * sizeof(wchar_t));
for( unsigned int i = 0; i < HashSize; i++ ){
swprintf(&((PWCHAR)MemberTag.data)[i * 2], L"%02X", hashbuf.data[i ]);
}
//Get catalog for our context.
HCATINFO CatalogContext = CryptCATAdminEnumCatalogFromHash(Context, hashbuf, HashSize, 0, NULL);
if ( CatalogContext )
{
//If we couldn't get information
if ( !CryptCATCatalogInfoFromContext(CatalogContext, &InfoStruct, 0) )
{
//Release the context and set the context to null so it gets picked up below.
CryptCATAdminReleaseCatalogContext(Context, CatalogContext, 0);
CatalogContext = NULL;
}
}
//If we have a valid context, we got our info.
//Otherwise, we attempt to verify the internal signature.
WINTRUST_DATA WintrustStructure = {0};
WintrustStructure.cbStruct = sizeof(WINTRUST_DATA);
if( !CatalogContext )
{
load_signature_verification_from_file_info(WintrustFileStructure, WintrustStructure);
}
else
{
load_signature_verification_from_catalog(WintrustStructure, WintrustCatalogStructure, InfoStruct, MemberTag);
}
//Call our verification function.
long verification_res = ::WinVerifyTrust(0, &ActionGuid, &WintrustStructure);
//Check return.
bool is_success = SUCCEEDED(verification_res) ? true : false;
// if failed with CatalogContext, try with FILE_INFO
if(!is_success && CatalogContext && verification_res != TRUST_E_NOSIGNATURE)
{
//warning2(L"Failed verification with Catalog Context: 0x%x %s ; Retrying with FILE_INFO.", verification_res, (const wchar_t*)format_last_error(verification_res));
load_signature_verification_from_file_info(WintrustFileStructure, WintrustStructure);
verification_res = ::WinVerifyTrust(0, &ActionGuid, &WintrustStructure);
is_success = SUCCEEDED(verification_res) ? true : false;
}
if(perr && !is_success && verification_res != TRUST_E_NOSIGNATURE)
{
perr->code = verification_res;
perr->description = format_last_error(verification_res);
}
//Free context.
if( CatalogContext ){
::CryptCATAdminReleaseCatalogContext(Context, CatalogContext, 0);
}
//If we successfully verified, we need to free.
if( is_success )
{
WintrustStructure.dwStateAction = WTD_STATEACTION_CLOSE;
::WinVerifyTrust(0, &ActionGuid, &WintrustStructure);
}
::CryptCATAdminReleaseContext(Context, 0);
return is_success;
I don't think any thing had changed in this function from win7 to win 8 so what could possibly go wrong?
UPDATE
I did notice that my function does work for task manager at win 8.
but again for the mmc it does not work.
It appears that your general approach is correct and the functions themselves haven't changed. However there are subtle changes; namely the data on which they operate has changed. The hashes stored for files on Windows 8, according to comments on CryptCATAdminCalcHashFromFileHandle, are calculated using SHA-256 hashes.
The SHA-256 hashing algorithm is not supported by CryptCATAdminCalcHashFromFileHandle, so you must update the code to use CryptCATAdminAcquireContext2 and CryptCATAdminCalcHashFromFileHandle2 on Windows 8; the former allows you to acquire a HCATADMIN with a specified hash algorithm, and the latter allows using that HCATADMIN.
(Interestingly, WINTRUST_CATALOG_INFO also points this direction with its HCATADMIN hCatAdmin member, documented as "Windows 8 and Windows Server 2012: Support for this member begins.")

GetLogicalDrives() for loop

I am new to the win32 api and need help trying to understand how the GetLogicalDrives() function works. I am trying to populate a cbs_dropdownlist with all the available drives that are not in use. here is what I have so far. I would appreciate any help.
void FillListBox(HWND hWndDropMenu)
{
DWORD drives = GetLogicalDrives();
for (int i=0; i<26; i++)
{
SendMessage(hWndDropMenu, CB_ADDSTRING, 0, (LPARAM)drives);
}
}
The function GetLogicalDrives returns a bitmask of the logical drives available. Here is how you would do it:
DWORD drives = GetLogicalDrives();
for (int i=0; i<26; i++)
{
if( !( drives & ( 1 << i ) ) )
{
TCHAR driveName[] = { TEXT('A') + i, TEXT(':'), TEXT('\\'), TEXT('\0') };
SendMessage(hWndDropMenu, CB_ADDSTRING, 0, (LPARAM)driveName);
}
}
The code checks whether the i-th bit in the bitmask is not set to 1 or true.
GetLogicalDrives returns a bitmask and to inspect it you need to use bitwise operators. To see if drive A is in use:
GetLogicalDrives() & 1 == 1
If drive A is unavailable, GetLogicalDrives() & 1 would yield 0 and the condition would fail.
To check the next drive you'll need to use the next multiple of 2, GetLogicalDrives() & 2, GetLogicalDrives() & 4 and so on.
You could use GetLogicalDriveStrings but this returns the inverse of what you want, all the used logical drives.
I would build a table instead, and index into that:
const char *drive_names[] =
{
"A:",
"B:",
...
"Z:"
};
Then your loop could be:
DWORD drives_bitmask = GetLogicalDrives();
for (DWORD i < 0; i < 32; i++)
{
// Shift 1 to a multiple of 2. 1 << 0 = 1 (0000 0001), 1 << 1 = 2 etc.
DWORD mask_index = 1 << i;
if (drives_bitmask & i == 0)
{
// Drive unavailable, add it to list.
const char *name = drive_names[i];
// ... do GUI work.
}
}

SoRayPickAction in Open Inventor?

Sorry if this is a repeat, but I'm trying to figure out the implementation of SoRayPickAction in Open Inventor. I'm trying to implement it so that it will, when the mouse is clicked, select a particular node so then I can translate, rotate, etc. I have three nodes: desk, lamp, and frame (picture frame). However, I don't think that my code is at all right. I also have various methods such a MouseButtonCallback (which will check if the mouse is clicked and then use a navigator) and MouseMoveCallback (same idea). So here's the code that I have, but do you have any suggestions? Right now, well, it doesn't do anything.
SbViewportRegion viewport(400,300);
SoRayPickAction m(viewport);
m.setRay(SbVec3f(0.0,0.0,0.0), SbVec3f(0.0,0.0,-1.0));
m.apply(callback_node);
const SoPickedPoint *mpp = m.getPickedPoint();
if(mpp != NULL) {
std::cout << "test" << std::endl;
}
Might you also know of an action in OpenInventor that can "place" a node in the scene, i.e. place the lamp on top of the desk, frame on the wall, etc. Is it with paths? I don't even know what I'm looking for, unfortunately. Thanks so much for your help!!
Edit: How does this look?
SoSeparator *desk2;
SoSeparator *lamp2;
SoSeparator *pic_frame2;
SoSeparator *picked;
void MouseButtonCallback(void* data, SoEventCallback* node)
{
SoHandleEventAction* action = node->getAction();
const SoMouseButtonEvent* event = static_cast<const SoMouseButtonEvent*>(action- >getEvent());
Navigator* nav = static_cast<Navigator*>(data);
if (SoMouseButtonEvent::isButtonPressEvent(event, event->getButton()))
nav->OnMouseDown(event, action);
else
nav->OnMouseUp(event, action);
const SbViewportRegion & viewportRegion = action->getViewportRegion();
SoRayPickAction pickAction(viewportRegion);
SbVec2s mousePos = event->getPosition(viewportRegion);
pickAction.setPoint(mousePos);
pickAction.setPickAll(TRUE);
pickAction.setRadius(2.0F);
pickAction.setRay(SbVec3f(0.0,0.0,0.0), SbVec3f(0.0,0.0,-1.0));
pickAction.apply(node);
const SoPickedPoint *mpp = pickAction.getPickedPoint();
if(mpp != NULL) {
SoPath *path = mpp->getPath();
if(desk2 != NULL && path->containsNode(desk2))
{ //but this doesn't respond with cout when I try to test it :(
if (SoMouseButtonEvent::isButtonPressEvent(event, event->getButton()))
*picked = *desk2;
}
else if(lamp2 != NULL && path->containsNode(lamp2))
{
if (SoMouseButtonEvent::isButtonPressEvent(event, event->getButton()))
*picked = *lamp2;
}
else if(pic_frame2 != NULL && path->containsNode(pic_frame2))
{
if (SoMouseButtonEvent::isButtonPressEvent(event, event->getButton()))
*picked = *pic_frame2;
}
action->setHandled();
}
void MouseMoveCallback(void* data, SoEventCallback* node)
{
SoHandleEventAction* action = node->getAction();
const SoLocation2Event* event = static_cast<const SoLocation2Event*>(action->getEvent());
Navigator* nav = static_cast<Navigator*>(data);
nav->OnMouseMove(event, action);
const SbViewportRegion & viewportRegion = action->getViewportRegion();
SoRayPickAction pickAction(viewportRegion);
SbVec2s mousePos = event->getPosition(viewportRegion);
pickAction.setPoint(mousePos);
pickAction.setPickAll(TRUE);
pickAction.setRadius(2.0F);
pickAction.setRay(SbVec3f(0.0,0.0,0.0), SbVec3f(0.0,0.0,-1.0));
pickAction.apply(node);
const SoPickedPoint *mpp = pickAction.getPickedPoint();
if(mpp != NULL) {
SoPath *path = mpp->getPath();
if(desk2 != NULL && path->containsNode(desk2))
{
*picked = *desk2; //can't remember how to set pointers, will figure that out
}
else if(lamp2 != NULL && path->containsNode(lamp2))
{
*picked = *lamp2;
}
else if(pic_frame2 != NULL && path->containsNode(pic_frame2))
{
*picked = *pic_frame2;
}
}
action->setHandled();
}
(part of main method)
//desk
SoTransform *desk_transform = new SoTransform;
desk_transform->translation.setValue(SbVec3f(380,340,330));
SoSeparator* desk2 = new SoSeparator();
desk2->addChild(desk_transform);
desk2->addChild(desk);
root->addChild(desk2);
SoTransformerManip* picked_transform = new SoTransformerManip();
picked_transform->translation.setValue(SbVec3f(200,340,330));
SoSeparator* pick2 = new SoSeparator();
pick2->addChild(picked_transform);
pick2->addChild(picked);
root->addChild(pick2);
std::auto_ptr<btCollisionShape> picked_shape(new btBoxShape(btVector3(10.0f, 10.0f, 10.0f)));
CollisionEngine* picked_collision = new CollisionEngine(collision_world.get(), picked_shape.get());
picked_collision->translation_in.connectFrom(&picked_transform->translation);
picked_collision->rotation_in.connectFrom(&picked_transform->rotation);
picked_transform->translation.connectFrom(&picked_collision->translation_out);
You have the picked point. You then get an SoPath as you guessed. Then see if the path contains a node you want to do something with.
SbViewportRegion viewport(400,300);
SoRayPickAction m(viewport);
m.setRay(SbVec3f(0.0,0.0,0.0), SbVec3f(0.0,0.0,-1.0));
m.apply(callback_node);
const SoPickedPoint *mpp = m.getPickedPoint();
if(mpp != NULL) {
std::cout << "test" << std::endl;
SoPath * path = pickedPoint->getPath();
if (deskSeparator != NULL && path->containsNode(deskSeparator)
{
}
else if (lampSeparator != NULL && path->containsNode(lampSeparator)
{
}
else if (radomeSeparator != NULL && path->containsNode(radomeSeparator)
{
if ( SoMouseButtonEvent::isButtonPressEvent( event, SoMouseButtonEvent::BUTTON2 )
|| ( SoMouseButtonEvent::isButtonPressEvent( event, SoMouseButtonEvent::BUTTON1 ) && event->wasShiftDown() ) )
{
modelPointMoving = true;
const SoDetail * detail = modelPickedPoint->getDetail( 0 );
int face = -1;
if ( detail && detail->isOfType( SoFaceDetail::getClassTypeId() ) )
{
const SoFaceDetail * faceDetail = static_cast<const SoFaceDetail *>( detail );
face = faceDetail->getFaceIndex();
}
updateStatusBar( face, point.getValue(), normal.getValue() );
graphicModel.postNote( pickedPoint );
break;
}
else if ( SoMouseButtonEvent::isButtonPressEvent( event, SoMouseButtonEvent::BUTTON1 ) )
{
}
else if ( SoMouseButtonEvent::isButtonReleaseEvent( event, SoMouseButtonEvent::BUTTON1 ) )
{
}
}
}
You'll eventually want to connect the pick ray to the mouse position sort of like this:
// Set an 2-pixel wide region around the pixel.
SbVec2s mousePosition = event->getPosition( viewportRegion );
pickAction.setPoint( mousePosition );
pickAction.setPickAll( TRUE );
pickAction.setRadius( 2.0F );
This is done before you .apply() the pick action of course.
I guess my code is a mixture of yours and mine but I think it should give you a start. Also, this is sitting inside a function to process mouse events:
void
RenderWindow::mouseEvent( void *, SoEventCallback * eventCallback )
{
const SoEvent *event = eventCallback->getEvent();
if ( ! event )
{
qDebug() << " ** Error in mousePressCallback: Event not found.";
return;
}
//SoType eventType = event->getTypeId();
//SbName eventTypeName = eventType.getName();
//const char * eventTypeString = eventTypeName.getString();
SoHandleEventAction * action = eventCallback->getAction();
const SbViewportRegion & viewportRegion = action->getViewportRegion();
SoRayPickAction pickAction( viewportRegion );
Up in main or a setup routine I register the mouse event (for both click action and location (moving the mouse over the viewport):
// Add a mouse event callback to catch mouse button presses.
SoEventCallback * mouseEventCallback = new SoEventCallback();
mouseEventCallback->setName( "MOUSE_EVENT_CALLBACK" );
mouseEventCallback->addEventCallback( SoMouseButtonEvent::getClassTypeId(), &::mouseEvent, static_cast<void *>( this ) );
// Add a mouse event callback to catch mouse motion.
mouseEventCallback->addEventCallback( SoLocation2Event::getClassTypeId(), &::mouseEvent, static_cast<void *>( this ) );
rootSeparator->addChild( mouseEventCallback );
Now that I look at it I wrote the chunks in reverse order ;-). Sorry.
Good Luck