//
//  MyView.m
//  ExploringGraphics2
//
//  Copyright TrailsintheSand.com 2008. All rights reserved.
//

#import "GraphicsView.h"
#import "Point2D.h"
#import "Vector2D.h"
#import "Object2D.h"


@implementation GraphicsView

- (id)initWithFrame:(CGRect)frameRect
{
    self = [super initWithFrame:frameRect];

    // Create a ball 2D object in the upper left corner of the screen
    // heading down and right
    ball = [[Object2D alloc] init];
    ball.position = [[Point2D alloc] initWithX:0.0 Y:0.0];
    ball.vector = [[Vector2D alloc] initWithX:5.0 Y:4.0];
    
    // Start a timer that will call the tick method of this class
    // 30 times per second
    timer = [NSTimer scheduledTimerWithTimeInterval:(1.0/30.0)
        target:self selector:@selector(tick) userInfo:nil repeats:YES];
        
    return self;
}

- (void)tick
{
    // Update the balls position
    [ball move:self.bounds];
    
    // Tell the view that it needs to re-draw itself
    [self setNeedsDisplay];
}

- (void)drawRect:(CGRect)rect
{
    // Clear the display and draw the ball
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    CGContextClearRect(ctx, rect);
    [ball draw:ctx];
}


- (void)dealloc
{
    // Free everything up
    [timer invalidate];
    [ball dealloc];
	[super dealloc];
}

@end