//-------------------------------------------------------------------------

//

//  File: GLSLBasicsView.h

//

//  Abstract: Main rendering class

//           

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//-------------------------------------------------------------------------

//-------------------------------------------------------------------------

//

// Required Includes

//

//-------------------------------------------------------------------------

#import <Cocoa/Cocoa.h>

#import <OpenGL/OpenGL.h>

#import "GLUTString.h"

#import "Shader.h"

#import "TranguloidTrefoilGeometry.h"

//-------------------------------------------------------------------------

//

// Custom OpenGL View

//

//-------------------------------------------------------------------------

@interface GLSLBasicsView : NSOpenGLView

{

    @private

        BOOL                leftMouseIsDown;            // was the left mouse button pressed?

        BOOL                rightMouseIsDown;           // was the right mouse button pressed?

        GLhandleARB         programObject;              // the program object

        GLuint              tranguloidTrefoilDL;        // display list ID for the geometry

        GLuint              paletteID;                  // texture color palette

        GLuint              patternID;                  // texture color patterns

        GLint               locations[4];               // uniforms for the fragment & vertex shaders 

        GLfloat             zoom;                       // zoom used for animation

        GLfloat             angle;                      // angle used for animation

        GLfloat             pitch;                      // pitch used for animation

        GLfloat             offset;                     // delta change for animation

        NSPoint             lastMousePoint;             // last mouse point 

        NSRect              bounds;                     // current view bounds

        NSTimeInterval      lastFrameReferenceTime;     // used to compute change in time

        NSTimer            *timer;                      // timer to update the view content

        NSString           *infoString;                 // view bounds as string

        GLUTString         *info;                       // for displaying a string using GLUT bitmap fonts

        TranguloidTrefoil  *tranguloidTrefoil;          // tranguloid trefoil geometry

        Shader             *plasma;                     // plasma fragemnt and vertex shaders

} // OpenGLView

@end

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