//

// File:        BasicOpenGLView.m

//

// Abstract:    Basic OpenGL View with Renderer information

//

// Version:     1.1 - minor fixes.

//              1.0 - Original release.

//              

//

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#import <OpenGL/gl.h>

#import <OpenGL/glext.h>

#import <OpenGL/glu.h>

#import "GLString.h"

typedef struct {

   GLdouble x,y,z;

} recVec;

typedef struct {

    recVec viewPos; // View position

    recVec viewDir; // View direction vector

    recVec viewUp; // View up direction

    recVec rotPoint; // Point to rotate about

    GLdouble aperture; // pContextInfo->camera aperture

    GLint viewWidth, viewHeight; // current window/screen height and width

} recCamera;

@interface BasicOpenGLView : NSOpenGLView

{

    // string attributes

    NSMutableDictionary * stanStringAttrib;

    // string textures

    GLString * helpStringTex;

    GLString * infoStringTex;

    GLString * camStringTex;

    GLString * capStringTex;

    GLString * msgStringTex;

    CFAbsoluteTime msgTime; // message posting time for expiration

    NSTimer* timer;

    bool fAnimate;

    IBOutlet NSMenuItem * animateMenuItem;

    bool fInfo;

    IBOutlet NSMenuItem * infoMenuItem;

    bool fDrawHelp;

    bool fDrawCaps;

    CFAbsoluteTime time;

    // spin

    GLfloat rRot [3];

    GLfloat rVel [3];

    GLfloat rAccel [3];

    // camera handling

    recCamera camera;

    GLfloat worldRotation [4];

    GLfloat objectRotation [4];

    GLfloat shapeSize;

}

+ (NSOpenGLPixelFormat*) basicPixelFormat;

- (void) updateProjection;

- (void) updateModelView;

- (void) resizeGL;

- (void) resetCamera;

- (void) updateObjectRotationForTimeDelta:(CFAbsoluteTime)deltaTime;

- (void)animationTimer:(NSTimer *)timer;

- (void) createHelpString;

- (void) createMessageString;

- (void) updateInfoString;

- (void) updateCameraString;

- (void) drawInfo;

-(IBAction) animate: (id) sender;

-(IBAction) info: (id) sender;

- (void)keyDown:(NSEvent *)theEvent;

- (void) mouseDown:(NSEvent *)theEvent;

- (void) rightMouseDown:(NSEvent *)theEvent;

- (void) otherMouseDown:(NSEvent *)theEvent;

- (void) mouseUp:(NSEvent *)theEvent;

- (void) rightMouseUp:(NSEvent *)theEvent;

- (void) otherMouseUp:(NSEvent *)theEvent;

- (void) mouseDragged:(NSEvent *)theEvent;

- (void) scrollWheel:(NSEvent *)theEvent;

- (void) rightMouseDragged:(NSEvent *)theEvent;

- (void) otherMouseDragged:(NSEvent *)theEvent;

- (void) drawRect:(NSRect)rect;

- (void) prepareOpenGL;

- (void) update;        // moved or resized

- (BOOL) acceptsFirstResponder;

- (BOOL) becomeFirstResponder;

- (BOOL) resignFirstResponder;

- (id) initWithFrame: (NSRect) frameRect;

- (void) awakeFromNib;

@end