//
//  BDBezierView.m
//  BezierDemo
//
//  Created by Alexander v. Below on 07.11.08.
//  Copyright 2008 AVB Software. All rights reserved.
//
 
#import "BDBezierView.h"
 
 
@implementation BDBezierView
 
- (id)initWithCoder:(NSCoder *)aCoder {
	if (self = [super initWithCoder:aCoder])
	{
		[self setUpView];
	}
	return self;
}
 
- (id)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
		[self setUpView];
	}
    return self;
}
 
 
- (void) setUpView {
	CGFloat w = self.bounds.size.width;
	// CGFloat h = self.bounds.size.height;
 
	startView = [[BDPointView alloc] initWithFrame:CGRectMake(20, 200, 40, 40) color:[UIColor redColor]];
	endView = [[BDPointView alloc] initWithFrame:CGRectMake(w-60, 200, 40, 40) color:[UIColor redColor]];
	controlView = [[BDPointView alloc] initWithFrame:CGRectMake(w/2-20, 100, 40, 40) color:[UIColor blueColor]];
 
	[self addSubview:startView];
	[self addSubview:endView];
	[self addSubview:controlView];
}
 
- (void)drawRect:(CGRect)rect {
	CGContextRef ctx;
	ctx = UIGraphicsGetCurrentContext();
 
	CGMutablePathRef bezierPath = CGPathCreateMutable();
 
	CGPathMoveToPoint(bezierPath, nil, startView.center.x, startView.center.y);
	CGPathAddQuadCurveToPoint(bezierPath, nil, controlView.center.x, controlView.center.y, endView.center.x, endView.center.y);
	CGContextAddPath(ctx, bezierPath);
	CGContextStrokePath(ctx);
	CFRelease(bezierPath);
}
 
- (void)dealloc {
    [super dealloc];
}
 
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
 
	for (UITouch * touch in touches)
	{
		if ([[touch view] isKindOfClass:[BDPointView self]]) {
			CGPoint location = [touch locationInView:self];
			[touch view].center = location;	
			[self setNeedsDisplay];
			return;
		}
	}
}
@end