Sports Formations

gistfile1.m

#import "FASFormationFactory.h"

@implementation FASFormationFactory

+ (void)test
{
  FASFormationFactory *factory = [[FASFormationFactory alloc] init];  
  NSArray *map = [factory formationForContainer:CGSizeMake(320.0f, 400.0f) lines:[NSArray arrayWithObjects:@"1", @"4", @"4", @"2", nil] itemSize:CGSizeMake(67, 100)];
}

- (NSArray *)formationForContainer:(CGSize)container lines:(NSArray *)lines itemSize:(CGSize)itemSize
{
  NSMutableArray *points = [NSMutableArray arrayWithCapacity:0];
  
  NSInteger numberOfLines = [lines count];
  
  NSArray *linePositions = [self midPointsForDistance:container.height itemWidth:itemSize.height itemCount:numberOfLines];
  
  for (NSInteger i = 0; i < numberOfLines; i++)
  {
    NSString *line = [lines objectAtIndex:i];
    NSInteger lineSize = [line integerValue];
    
    NSInteger y = [[linePositions objectAtIndex:i] floatValue];

    NSArray *linePoints = [self midPointsForDistance:container.width itemWidth:itemSize.width itemCount:lineSize];
    for (NSNumber *x in linePoints)
    {
      CGPoint point = CGPointMake([x floatValue], y);
      [points addObject:[NSValue valueWithCGPoint:point]];
    }
  }
  
  return points;
}

- (NSArray *)midPointsForDistance:(CGFloat)distance itemWidth:(CGFloat)width itemCount:(NSInteger)count
{
  NSMutableArray *points = [NSMutableArray arrayWithCapacity:0];
  CGFloat space = (distance - (count * width)) / (count + 1);
  
  for (int i = 0; i < count; i++) {
    
    CGFloat point = space + ((width / 2));
    if (i > 0) {
      point += (width * i);
      point += (space * i);
    }
    
    [points addObject:[NSNumber numberWithFloat:point]];
  }
  return points;
}

@end