manipulators/maniparrow/ormaniparrow_manip.cxx

/***************************************************************************************
Autodesk(R) Open Reality(R) Samples

(C) 2009 Autodesk, Inc. and/or its licensors
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***************************************************************************************/

//--- Class declarations
#include "ormaniparrow_manip.h"

// OpenGL
#include <fbsdk/fbsdk-opengl.h>

//--- Registration defines
#define ORMANIPARROW__CLASS ORMANIPARROW__CLASSNAME
#define ORMANIPARROW__LABEL "OR - Arrow"
#define ORMANIPARROW__DESC  "OR - Arrow Manipulator Description"

//--- FiLMBOX implementation and registration
FBManipulatorImplementation (   ORMANIPARROW__CLASS     );
FBRegisterManipulator       (   ORMANIPARROW__CLASS,
    ORMANIPARROW__LABEL,
    ORMANIPARROW__DESC,
    FB_DEFAULT_SDK_ICON     );  // Icon filename (default=Open Reality icon)


/************************************************
*   FiLMBOX Constructor.
************************************************/
bool ORManipArrow::FBCreate()
{
    if( FBManipulator::FBCreate() )
    {
        // Properties
        DefaultBehavior     = true;
        ViewerText          = "Arrow Manipulator";

        // Members
        mTestState          = 0;
        mModel              = NULL;
        mRenderInModelSpace = true;
        mActivated          = false;

        return true;
    }
    return false;
}


/************************************************
*   FiLMBOX Destructor.
************************************************/
void ORManipArrow::FBDestroy()
{
    FBManipulator::FBDestroy();
}

/************************************************
*   FiLMBOX Draw.
************************************************/
void ORManipArrow::DrawArrow( FBVector3d lVector )
{
    glLoadName(1);
    glColor3f( 1.0, 1.0, 0.0 );
    glBegin(GL_POLYGON);
    glVertex3f( lVector[0], lVector[1]-1, lVector[2] );
    glVertex3f( lVector[0]+50.0, lVector[1]-1, lVector[2] );
    glVertex3f( lVector[0]+50.0, lVector[1]+1, lVector[2] );
    glVertex3f( lVector[0], lVector[1]+1, lVector[2] );
    glEnd();
    glBegin(GL_POLYGON);
    glVertex3f( lVector[0]+50.0, lVector[1]-5, lVector[2] );
    glVertex3f( lVector[0]+60.0, lVector[1], lVector[2] );
    glVertex3f( lVector[0]+50.0, lVector[1]+5, lVector[2] );
    glEnd();
}

/************************************************
*   Draw function for manipulator
************************************************/
void ORManipArrow::ViewExpose()
{
    static int  lValue      = 0;
    static int  lStep       = 1;
    static bool lForward    = true;

    FBVector3d lVector;
    FBModelList lList;

    FBGetSelectedModels( lList );
    int lSelectedModels = lList.GetCount();
    for(int i=0;i<lSelectedModels;i++)
    {
        if( lList[i]->Is(FBModel::TypeInfo) )
        {
            mModel = lList[i];
            break;
        }
        else
        {
            mModel = NULL;
        }
    }

    if( lSelectedModels == 0 )
    {
        mModel = NULL;
    }

    if( mModel != NULL )
    {
        mModel->GetVector(lVector);
        mActivated = true;

        if( mRenderInModelSpace )
        {
            FBModelRenderBegin( NULL );
        }

        DrawArrow( lVector );
        glFlush();

        if( mRenderInModelSpace )
        {
            FBModelRenderEnd();
        }
    }
}

/************************************************
*   Deal with maniplator input.
************************************************/
bool ORManipArrow::ViewInput(int pMouseX, int pMouseY, FBInputType pAction, int pButtonKey, int pModifier)
{
    static bool lMouseButtonPressed = false;
    static bool lArrowSelected = false;
    static int  lPrevMouseX = 0;

    FBVector3d  lVector;
    if( mActivated && Active )
    {
        switch( pAction )
        {
        case kFBKeyPress:
            {
                // When a keyboard key is pressed.
            }
            break;
        case kFBKeyRelease:
            {
                // When a keyboard key is released.
            }
            break;
        case kFBButtonDoubleClick:
            {
                // Mouse button double-clicked.
            }
            break;
        case kFBButtonPress:
            {
                if( mModel != NULL )
                {
                    lMouseButtonPressed = true;
                    lArrowSelected = false;

                    // Mouse button clicked.
                    GLuint  lSelectionBuf[64];
                    GLint   lViewport[4];
                    FBCamera* lCamera = (FBCamera*)CurrentCamera;

                    glGetIntegerv(GL_VIEWPORT,lViewport);

                    glSelectBuffer(64, lSelectionBuf);
                    glRenderMode(GL_SELECT);

                    glInitNames();
                    glPushName( (GLuint)-1 );

                    glMatrixMode(GL_PROJECTION);
                    glPushMatrix();
                    {
                        glLoadIdentity();

                        // IMPORTANT: the picking transfo _PREMULTIPLIES_ the projection transfo...
                        gluPickMatrix(pMouseX, ((double)lCamera->WindowHeight) - pMouseY, 5.0, 5.0, lViewport);
                        FBMatrix lCameraProjMatrix;
                        lCamera->GetCameraMatrix( lCameraProjMatrix, kFBProjection );
                        glMultMatrixd( lCameraProjMatrix );

                        glMatrixMode(GL_MODELVIEW);
                        glPushMatrix();
                        {
                            FBMatrix lCameraMVMatrix;
                            lCamera->GetCameraMatrix( lCameraMVMatrix, kFBModelView );
                            glLoadMatrixd( lCameraMVMatrix );
                            mModel->GetVector( lVector );
                            DrawArrow( lVector );
                        }
                        glPopMatrix();
                    }
                    glMatrixMode(GL_PROJECTION);
                    glPopMatrix();

                    glMatrixMode(GL_MODELVIEW);

                    glPopName();
                    glFlush();

                    lArrowSelected = (glRenderMode(GL_RENDER)!=0);
                }
            }
            break;
        case kFBButtonRelease:
            {
                // Mouse button released.
                lMouseButtonPressed = false;
            }
            break;
        case kFBMotionNotify:
            {
                if( lMouseButtonPressed )
                {
                    if( lArrowSelected )
                    {
                        if( mModel != NULL )
                        {
                            mModel->GetVector(lVector);

                            GLint   lViewport[4];
                            glGetIntegerv(GL_VIEWPORT,lViewport);

                            if( pMouseX - lPrevMouseX > 0 )
                            {
                                lVector[0] += 3;
                            }
                            else if( pMouseX - lPrevMouseX < 0 )
                            {
                                lVector[0] -= 3;
                            }

                            mModel->SetVector(lVector);
                        }
                    }
                }
                // When there is mouse movement in the viewer window
            }
            break;
        case kFBDragging:
            {
                // Items are being dragged.
            }
            break;
        case kFBDropping:
            {
                // Items are being dropped.
            }
            break;
        }
    }
    lPrevMouseX = pMouseX;

    return true;
}