C++ CrtRender::SetNextCamera方法代码示例

void MouseCallback(int button, int state, int x, int y)
{
    switch (button)
    {
    case GLUT_MIDDLE_BUTTON:
        if (state == GLUT_UP) {
            sLeftBtnDown = false;
        }
        else if (state == GLUT_DOWN) {
            sLeftBtnDown = true;
            _CrtRender.SetNextCamera();
        }
        break;
    case GLUT_LEFT_BUTTON:
        if (state == GLUT_UP)
            sLeftBtnDown = false;
        else if (state == GLUT_DOWN)
            sLeftBtnDown = true;
        break;
    case GLUT_RIGHT_BUTTON:
        if (state == GLUT_UP)
            sRightBtnDown = false;
        else if (state == GLUT_DOWN)
            sRightBtnDown = true;
        break;
    default:
        break;
    }
}

bool COLLADA_Viewer::onUpdate()
{
	float tolerrance = 0.15;
	static float buttonTime = 0;
	static float cameraTime = 0;
	bool result = FWGLApplication::onUpdate();

	if (mRunning==false)
	   return result;

	FWTimeVal curTime = FWTime::getCurrentTime();

	if ((float)curTime - buttonTime > 0.15)	// execute these control base on time elapse, not frame rate
	{
		buttonTime = curTime;
		if(mpPad->getRawBool(FWInput::Channel_Button_Select))
		{
		  _CrtRender.SetNextCamera();
		  return result;
		} else if(mpPad->getRawBool(FWInput::Channel_Button_L3))
		{
		   if (Browser.IsVisible())
			   Browser.SetVisible(false);
		   else
			   Browser.SetVisible(true);
		} else if(mpPad->getRawBool(FWInput::Channel_Button_R3))
		{
			if (togglewireframe) {
				togglewireframe = false;
			} else {
				togglewireframe = true;
			}
		} else if(mpPad->getRawBool(FWInput::Channel_Button_Square)) 
		{
			if (togglelighting) {
				togglelighting = false;
			} else {
				togglelighting = true;
			}
		} else if(mpPad->getRawBool(FWInput::Channel_Button_Cross)) 
		{
			mCurrentFile = Browser.GetThumbnail(Browser.GetSelection())->GetDocument();
			load_ok = _CrtRender.Load(mCurrentFile, NULL);
			return result;
		} else if(mpPad->getRawBool(FWInput::Channel_Button_Up))
		{
		   Browser.SelectPrev();
		} else if(mpPad->getRawBool(FWInput::Channel_Button_Down))
		{
		   Browser.SelectNext();
		}
	}

	if ((float)curTime - cameraTime > 0.05)	// execute these control base on time elapse, not frame rate
	{
		cameraTime = curTime;
			   // Get the values from the analog sticks
	   float conditioned_X_0 = mpPad->getRawFloat(FWInput::Channel_XAxis_0);
	   float conditioned_Y_0 = mpPad->getRawFloat(FWInput::Channel_YAxis_0);
	   float conditioned_X_1 = mpPad->getRawFloat(FWInput::Channel_XAxis_1);
	   float conditioned_Y_1 = mpPad->getRawFloat(FWInput::Channel_YAxis_1);

	   if (-tolerrance < conditioned_X_0 && conditioned_X_0 < tolerrance) conditioned_X_0 = 0.0f;
	   if (-tolerrance < conditioned_Y_0 && conditioned_Y_0 < tolerrance) conditioned_Y_0 = 0.0f;
	   if (-tolerrance < conditioned_X_1 && conditioned_X_1 < tolerrance) conditioned_X_1 = 0.0f;
	   if (-tolerrance < conditioned_Y_1 && conditioned_Y_1 < tolerrance) conditioned_Y_1 = 0.0f;

	   conditioned_X_0 = mpInputX0 ? -mpInputX0->getFloatValue() : 0.f;
	   conditioned_Y_0 = mpInputY0 ? -mpInputY0->getFloatValue() : 0.f;
	   conditioned_X_1 = mpInputX1 ? -mpInputX1->getFloatValue() : 0.f;
	   conditioned_Y_1 = mpInputY1 ? -mpInputY1->getFloatValue() : 0.f;

	   float multiplier = 10.0f;
	   if (conditioned_X_0 != 0.0f || conditioned_Y_0 != 0.0f)
	   {
		  _CrtRender.ActiveInstanceCamera->MoveOrbit(conditioned_X_0 * multiplier, conditioned_Y_0 * multiplier);
	   }
	   if (conditioned_X_1 != 0.0f || conditioned_Y_1 != 0.0f)
	   {
		  _CrtRender.ActiveInstanceCamera->SetPanAndTilt(conditioned_X_1 * multiplier, conditioned_Y_1 * multiplier);
	   }
	}
	
	if(mpPad->getRawBool(FWInput::Channel_Button_L2))
	{  // zoom in
	  _CrtRender.ZoomIn(-0.005f);
	} else if(mpPad->getRawBool(FWInput::Channel_Button_L1))
	{  // zoom out
	  _CrtRender.ZoomIn(0.005f);
   	}
	
	if (togglewireframe) {
		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
	} else {
		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
	}

	if (togglelighting) {
		glEnable(GL_LIGHTING);
	} else {
//.........这里部分代码省略.........

LRESULT CALLBACK WndProc(	HWND	hWnd,			
							UINT	uMsg,			
							WPARAM	wParam,			
							LPARAM	lParam)			
{	

	switch (uMsg)									
	{
		case WM_ACTIVATE:							
		{
			if (!HIWORD(wParam))					
			{
				active=TRUE;						
			}
			else
			{
				active=FALSE;						
			}

			return 0;								
		}

		case WM_SYSCOMMAND:							
		{
			switch (wParam)							
			{
				case SC_SCREENSAVE:					
				case SC_MONITORPOWER:				
				return 0;							
			}
			break;									
		}

		case WM_CLOSE:								
		{
			PostQuitMessage(0);						
			return 0;								
		}

		case WM_KEYDOWN:						
		{
			// We only want to know which keys are down, so if this was an auto-repeat, ignore it
			if(!(HIWORD(lParam) & KF_REPEAT))
			{
				// Remember which keys are being held down
				keys[wParam] = TRUE;
			}
			return 0;							
		}

		case WM_KEYUP:							
		{
			keys[wParam] = FALSE;				
			return 0;							
		}

		case WM_SIZE:							
		{
			ResizeGLScreen(LOWORD(lParam),HIWORD(lParam));
			return 0;								
		}
		case WM_MOUSEWHEEL:
		{
			if (_CrtRender.ActiveInstanceCamera)
			{
				float gcWheelDelta = (short) HIWORD(wParam);
				_CrtRender.ZoomIn((CrtFloat) (-gcWheelDelta * MouseWheelSpeed));

				return 0;
			}
		}
		case WM_MBUTTONDOWN:
		{
			// Change camera
			_CrtRender.SetNextCamera();
			return 0;
		}
		case WM_MOUSEMOVE:
		{
			// UI code to move camera in response to mouse movement.
			static float lastx = 0, lasty = 0;
			static int	 lastLeft = 0, lastRight = 0, lastMiddle = 0;
			// Retrieve mouse screen position and button state
			float x=(float) (short)LOWORD(lParam);
			float y=(float) (short)HIWORD(lParam);
//			bool controlButtonDown=((wParam & MK_CONTROL)  !=0);
			bool leftButtonDown=((wParam & MK_LBUTTON)  !=0);
			bool middleButtonDown=((wParam & MK_MBUTTON)  !=0);			
			bool rightButtonDown=((wParam & MK_RBUTTON) !=0);
			// Handle rotations if left button was pressed
			if(leftButtonDown)
			{
				if(lastLeft && _CrtRender.ActiveInstanceCamera)
				{
					_CrtRender.ActiveInstanceCamera->SetPanAndTilt((lastx - x) * MouseRotateSpeed, (lasty - y) * MouseRotateSpeed);
					lastx = x;
					lasty = y;
				}
				else
				{
//.........这里部分代码省略.........

// Call ProcessInput once per frame to process input keys
void ProcessInput( bool	keys[] )
{
	// These keys we don't want to auto-repeat, so we clear them in "keys" after handling them once
	if (keys['E'] && amplitudeGlobalParameter)
	{
		float value;
		cgGetParameterValuefc(amplitudeGlobalParameter, 1, &value);
		value += 0.1f;
		cgSetParameter1f(amplitudeGlobalParameter, value);
		keys['E'] = false;
	}
	if (keys['R'] && amplitudeGlobalParameter)
	{
		float value;
		cgGetParameterValuefc(amplitudeGlobalParameter,1, &value);
		value -= 0.1f;
		cgSetParameter1f(amplitudeGlobalParameter, value);
		keys['R'] = false;
	}
	if (keys[VK_TAB] )
	{
		// When 'C' is pressed, change cameras
		_CrtRender.SetNextCamera();
		keys[VK_TAB] = false;
	}

	if ( keys['M'] )
	{
		// Speed up UI by 25%
		AdjustUISpeed(1.25f);  
		keys['M'] = false;
	}
	if ( keys['N'] )
	{
		// Slow down UI by 25%
		AdjustUISpeed(0.75f);  // Go 25% slower
		keys['N'] = false;
	}
	if (keys['Q'])
	{
		if (togglewireframe) {
			glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
			togglewireframe = FALSE;
		} else {
			glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
			togglewireframe = TRUE;
		}
		keys['Q'] = false;
	}

	if (keys['K'])
	{
		if (togglehiearchy) {
			_CrtRender.SetShowHiearchy(CrtTrue);	
			togglehiearchy = FALSE;
		} else {
			_CrtRender.SetShowHiearchy(CrtFalse);
			togglehiearchy = TRUE;
		}
		keys['K'] = false;
	}
	if (keys['L'])
	{
		if (togglelighting) {
			glDisable(GL_LIGHTING);
			togglelighting = FALSE;
		} else {
			glEnable(GL_LIGHTING);
			togglelighting = TRUE;
		}
		keys['L'] = false;
	}

	if (keys['P'] )
	{
		if (sAnimationEnable) {
			_CrtRender.SetAnimationPaused( CrtTrue );
			sAnimationEnable = false;
		}
		else { 
			_CrtRender.SetAnimationPaused( CrtFalse ); 
			sAnimationEnable = true;
		}
		keys['P'] = false;
	}
	if (keys[VK_F1])		
	{
		keys[VK_F1]=FALSE;		
		_CrtRender.Destroy();
		DestroyGLWindow();			
		fullscreen=!fullscreen;		
		// Recreate Our OpenGL Window
		if (!CreateGLWindow("Collada Viewer for PC", _CrtRender.GetScreenWidth(), _CrtRender.GetScreenHeight(),32,fullscreen))
		{
			exit(1);
		}
		if ( !_CrtRender.Load( cleaned_file_name ))
		{
			exit(0);
//.........这里部分代码省略.........

static void KeyboardCallback(const unsigned char key, const int x, const int y)
{
    (void)x;
    (void)y;

    switch (key)
    {
    case 9 :    /* TAB key */
        _CrtRender.SetNextCamera();
        break;
    case 'k' :
    case 'K' :
        sHierarchy = !sHierarchy;
        if (!sHierarchy) {
            _CrtRender.SetShowHiearchy( CrtFalse );
        }
        else {
            _CrtRender.SetShowHiearchy( CrtTrue );
        }
        break;
    case 'l' :
    case 'L' :
        sGlLighting = !sGlLighting;
        if (sGlLighting) {
            glEnable(GL_LIGHTING);
        } else {
            glDisable(GL_LIGHTING);
        }
        break;
    case 'm' :
    case 'M' :
        AdjustUISpeed(1.25f);
        break;
    case 'n' :
    case 'N' :
        AdjustUISpeed(0.75f);
        break;
    case 'p' :
    case 'P' :
        sAnimation = !sAnimation;
        if (!sAnimation) {
            _CrtRender.SetAnimationPaused( CrtTrue );
        }
        else {
            _CrtRender.SetAnimationPaused( CrtFalse );
        }
        break;
    case 'q' :
    case 'Q' :
        sWireframe = !sWireframe;
        if (sWireframe) {
            glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
        } else {
            glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
        }
        break;
    case 's' :  //zoom in
    case 'S' :
        _CrtRender.ActiveInstanceCamera->MoveTransform(_CrtRender.GetAnimDelta() * KeyboardTranslateSpeed *0.5f, 0.0f, 0.0f);
        break;
    case 'w' :  // zoom out
    case 'W' :
        _CrtRender.ActiveInstanceCamera->MoveTransform(- _CrtRender.GetAnimDelta() * KeyboardTranslateSpeed * 0.5f, 0.0f, 0.0f);
        break;
    case 32 :   // space key, UP
        // UI code to move the camera farther up
        _CrtRender.ActiveInstanceCamera->MoveTransform(0.0f, 0.0f, _CrtRender.GetAnimDelta() * KeyboardTranslateSpeed);
        break;
    case 'x' :  // down
    case 'X' :
        _CrtRender.ActiveInstanceCamera->MoveTransform(0.0f, 0.0f, - _CrtRender.GetAnimDelta() * KeyboardTranslateSpeed);
        break;
    case 'd' :  // right
    case 'D' :
        _CrtRender.ActiveInstanceCamera->MoveTransform(0.0f, - _CrtRender.GetAnimDelta() * KeyboardTranslateSpeed, 0.0f);
        break;
    case 'a' :  // left
    case 'A' :
        _CrtRender.ActiveInstanceCamera->MoveTransform(0.0f, _CrtRender.GetAnimDelta() * KeyboardTranslateSpeed, 0.0f);
        break;
    case 'f' :
    case 'F' :
        if(sCulling == 0)
        {   // turn it front
            glEnable( GL_CULL_FACE );
            glCullFace(GL_FRONT);
            sCulling = 1;
        } else if(sCulling == 1)
        {   // turn it both
            glDisable( GL_CULL_FACE );
            sCulling = 2;
        } else
        {   // turn it back
            glEnable( GL_CULL_FACE );
            glCullFace(GL_BACK);
            sCulling = 0;
        }
        break;
    default:
        printf("unused key : %i\n",  key );
//.........这里部分代码省略.........