악당잰의 연구실 RSS FEED

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect

{

    // Drawing code

    CGContextRef ctx = UIGraphicsGetCurrentContext();

    [self drawLine:ctx

         color:[UIColor grayColor]

         width:1.0f

        startPoint:CGPointMake(10, 20)

          endPoint:CGPointMake(100, 40)];

    [self drawCircle:ctx

           fillColor:[UIColor blackColor]

         strokeColor:[UIColor grayColor]

              radius:30.0f

         CenterPoint:CGPointMake(250, 40)];

    [self drawText:ctx text:@"Graph TEST!!" size:13.0f point:CGPointMake(100, 100)];

}

- (void)drawLine:(CGContextRef)ctx color:(UIColor *)c width:(float)w startPoint:(CGPoint)sp endPoint:(CGPoint)ep {

    CGContextSetStrokeColorWithColor(ctx, c.CGColor);

    CGContextBeginPath(ctx);

    CGContextMoveToPoint(ctx, sp.x, sp.y);

    CGContextAddLineToPoint(ctx, ep.x, ep.y);

    CGContextStrokePath(ctx);

}

- (void)drawCircle:(CGContextRef)ctx fillColor:(UIColor *)fc strokeColor:(UIColor *)sc radius:(float)r CenterPoint:(CGPoint)cp {

    // Set the width of the line

    CGContextSetLineWidth(ctx, 2.0);

    //Make the circle

    // 150 = x coordinate

    // 150 = y coordinate

    // 100 = radius of circle

    // 0   = starting angle

    // 2*M_PI = end angle

    // YES = draw clockwise

    CGContextBeginPath(ctx);

    CGContextAddArc(ctx, cp.x, cp.y, r, 0, 2*M_PI, YES);

    CGContextClosePath(ctx);

    //color

    CGContextSetFillColorWithColor(ctx, fc.CGColor);

    CGContextSetStrokeColorWithColor(ctx, sc.CGColor);

    // Note: If I wanted to only stroke the path, use:

    // CGContextDrawPath(context, kCGPathStroke);

    // or to only fill it, use:

    // CGContextDrawPath(context, kCGPathFill);

    //Fill/Stroke the path

    CGContextDrawPath(ctx, kCGPathFillStroke);

}

- (void)drawCircle:(CGContextRef)ctx color:(UIColor *)c radius:(float)r CenterPoint:(CGPoint)cp {

    [self drawCircle:ctx fillColor:c strokeColor:c radius:r CenterPoint:cp];

}

- (void)drawText:(CGContextRef)ctx text:(NSString *)t size:(float)s point:(CGPoint)p {

    CGContextSetTextDrawingMode(ctx, kCGTextFill); // This is the default

    [[UIColor redColor] setFill]; // This is the default

    [t drawAtPoint:CGPointMake(p.x, p.y)

               withAttributes:@{NSFontAttributeName:[UIFont fontWithName:@"Helvetica"

                                                                    size:s]}];

}