/*

     File: MyOpenGLView.m

 Abstract: An NSOpenGLView subclass that renders a rotating globe.

  Version: 1.1

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 */

#import "MyOpenGLView.h"

#import "Scene.h"

@implementation MyOpenGLView

- initWithFrame:(NSRect)frameRect {

    NSOpenGLPixelFormatAttribute attrs[] = {

        // Specifying "NoRecovery" gives us a context that cannot fall back to the software renderer.  This makes the View-based context a compatible with the layer-backed context, enabling us to use the "shareContext" feature to share textures, display lists, and other OpenGL objects between the two.

        NSOpenGLPFANoRecovery, // Enable automatic use of OpenGL "share" contexts.

        NSOpenGLPFAColorSize, 24,

        NSOpenGLPFAAlphaSize, 8,

        NSOpenGLPFADepthSize, 16,

        NSOpenGLPFADoubleBuffer,

        NSOpenGLPFAAccelerated,

        0

    };

    // Create our pixel format.

    NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];

    self = [super initWithFrame:frameRect pixelFormat:pixelFormat];

    if (self) {

        scene = [[Scene alloc] init];

    }

    [pixelFormat release];

    return self;

}

- (void)dealloc {

    [scene release];

    [super dealloc];

}

- (Scene *)scene {

    return scene;

}

- (float)cameraDistance {

    return [scene cameraDistance];

}

- (void)setCameraDistance:(float)newCameraDistance {

    [scene setCameraDistance:newCameraDistance];

    [self setNeedsDisplay:YES];

}

- (float)rollAngle {

    return [scene rollAngle];

}

- (void)setRollAngle:(float)newRollAngle {

    [scene setRollAngle:newRollAngle];

    [self setNeedsDisplay:YES];

}

- (float)sunAngle {

    return [scene sunAngle];

}

- (void)setSunAngle:(float)newSunAngle {

    [scene setSunAngle:newSunAngle];

    [self setNeedsDisplay:YES];

}

- (BOOL)wireframe {

    return [scene wireframe];

}

- (void)setWireframe:(BOOL)flag {

    [scene setWireframe:flag];

    [self setNeedsDisplay:YES];

}

// AppKit automatically invokes the NSOpenGLView's -prepareOpenGL once when a new NSOpenGLContext becomes current.

- (void)prepareOpenGL {

    [scene prepareOpenGL];

}

- (void)drawRect:(NSRect)aRect {

    // Clear the framebuffer.

    glClearColor( 0.0, 0.0, 0.0, 1.0 );

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

    // Delegate to our scene object for the remainder of the frame rendering.

    [scene render];

    [[self openGLContext] flushBuffer];

}

- (void)reshape {

    // Delegate to our scene object to update for a change in the view size.

    NSRect pixelBounds = [self convertRectToBase:[self bounds]];

    [scene setViewportRect:NSMakeRect(0, 0, pixelBounds.size.width, pixelBounds.size.height)];

}

- (BOOL)acceptsFirstResponder {

    // We want this view to be able to receive key events.

    return YES;

}

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

    // Delegate to our controller object for handling key events.

    [controller keyDown:theEvent];

}

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

    // Delegate to our controller object for handling mouse events.

    [controller mouseDown:theEvent];

}

@end