// Tumbler_Document.h

//

// Document related data structures and function prototypes for the 

// document type used in the Tumbler application

//

// Modification History

//

//  11/26/94        nick        initial cut - symantec proto_helper app, add defines

//                              and strip stuff from the globals.h file

//  01/24/95        nick        add field for backfacing style

#ifndef _Tumbler_DOCUMENT_H_

#define _Tumbler_DOCUMENT_H_

#include "Tumbler_Offscreen.h"

//  Data Structures.

typedef struct WindowOffscreen {

    CGrafPtr        windowPort;

    GDHandle        windowDevice;

    GWorldPtr       offscreenWorld;

} WindowOffscreen;

//  Data Structures.

#define kTumblerDefaultClearColor   0.8

typedef struct _DocumentRecord {

    WindowPtr               theWindow;

    FSSpec                  theFileSpec ;

    short                   fRefNum;

    short                   dirty;

#ifdef PODIUM_APP

    // the main difference between Tumbler and podium is that 

    // podium has a background picture that is displayed behind

    // the group, and that the group uses a pixmap draw context

    // which is variable sized and "floats" above the background 

    // picture.  To make this work, we need 2 extra GWorlds, one

    // for the BG picture and one to attach to the pixmap draw 

    // context

    GWorldPtr               bgOffscreen ;           // holds a pict the size of the main window.

    GWorldPtr               screenBuffer ;          // use for compositing to reduce flicker

                                                    // same size as the above.

    GWorldPtr               geometriesOffscreen ;   // initially a 200x200 offscreen for the geo's.

//  GWorldPtr               maskOffscreen ;         // same size as geo's - 1 bit mask.

    Rect                    bgRect ;                //

    Rect                    dropArea;

    GWorldPtr               drawContextOffscreen;

    Point                   mouseLocation;

    TQ3Object               currentlySelectedObject;

    TQ3Boolean              selected;

#else

    TQ3ColorARGB            clearColor ;

#endif

    TQ3GroupObject          documentGroup;                              // main group for the document

    TQ3ViewObject           theView;                                    // the documents view object

    TQ3Boolean              animateLights, animateModel;                // set to true if we are animating either the lights or the model

    TQ3Boolean              light;                                      // set to true if the three lights are on

    TQ3Boolean              shaded;                                     // we provide flat, per vertext or per pixel

    TQ3GroupObject          dynamicLights;                              // the lighting for the scene

    TQ3GroupObject          light1, light2, light3;                     // these objects indicate where the lights are (i.e. they are not the lights, but

                                                                        // they indicate the location of the lights

    TQ3TransformObject      lightXform1, lightXform2, lightXform3;      // transforms for the lights (used to map to their current position)

    TQ3Matrix4x4            modelRotation;                              // the transform for the model

    TQ3InterpolationStyle   currentInterpolation;

    TQ3StyleObject          backfacingStyle ;                           // the style to use for backface removal

    TQ3ShaderObject         illuminationShader ;

    TQ3Point3D              documentGroupCenter;

    float                   documentGroupScale;

    TQ3SharedObject         viewHints;                                  // ViewHints for this doc

    TQ3Vector3D             rotationDir;

} DocumentRecord, *DocumentPtr, **DocumentHandle ;

/* Tumbler_offscreen.c */

TQ3Status DrawOffscreen(DocumentPtr theDocument);

void DrawOnscreen(DocumentPtr theDocument);

// Tumbler_document.c 

void        AdjustDocumentView(DocumentPtr theDocument);

void        AdjustScrollBar(DocumentPtr theDocument);

void        PositionDocumentParts(DocumentPtr theDocument);

DocumentPtr NewDocument( TQ3SharedObject viewHints, TQ3GroupObject group );

Boolean     CloseDocument(DocumentPtr theDocument);

Boolean     CloseAllDocuments(void);

void        DoActivateDocument(DocumentPtr theDocument, short activate);

DocumentPtr GetDocumentFromWindow(WindowPtr theWindow);

TQ3Status InitializeGroup(TQ3GroupObject group);

TQ3Status           TumblerDocument_NewLights( DocumentPtr theDocument ) ;

TQ3CameraObject         TumblerDocument_NewCamera(WindowPtr theWindow);

TQ3DrawContextObject    TumblerDocument_NewDrawContext(WindowPtr theWindow);

TQ3Status           TumblerDocument_UpdateView( DocumentPtr theDocument, TQ3SharedObject viewHints ) ;

#ifdef PODIUM_APP

// these functions are needed only for podium

TQ3DrawContextObject TumblerDocument_NewPixmapDrawContext(DocumentPtr theDocument) ;

#endif

#endif