角度0、90、180、270を使用している場合も、ランダムに生成、回転、およびこのビューに配置された複数のUILabels用のUIVewコンテナーを用意しますが、角度がランダムに生成されたラベルが展開されているように見える場合、これは私にとって問題です。交差せずに非常に近くに配置すると、次のようにジェネレーターが表示されます。
- (void) generate:(UIView *)container
words:(NSArray *)words
colors:(NSArray *)colors
minFontSize:(float)minSize
maxFontSize:(float)maxSize
rotateWords:(BOOL)rotate
useAngleRange:(BOOL)useRange
{
usingRange = useRange;
for (int i = 0; i < [words count]; i++) {
UILabel *word_l = [[UILabel alloc] init];
word_l.font = [UIFont fontWithName:@"EuropeBold" size:[self getRandomNumberBetween:minSize to:(i < probableBigFontWords) ? maxSize : (maxSize / 3)]];
[word_l setText:words[i]];
[word_l setTextColor:colors[arc4random_uniform([colors count])]];
[word_l setBackgroundColor:[UIColor clearColor]];
[word_l sizeToFit];
CGRect fr = CGRectMake(0,
0,
word_l.frame.size.width,
word_l.frame.size.height);
word_l.frame = fr;
word_l.center = CGPointMake([self getRandomNumberBetween:175 to:639], [self getRandomNumberBetween:175 to:375]);
if (rotate) {
int angleType = arc4random_uniform(2);
if (useRange) {
int angle = (angleType == 1) ? [self getRandomNumberBetween:0 to:90] : [self getRandomNumberBetween:270 to:360];
[word_l setTransform:CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(angle))];
} else {
[word_l setTransform:CGAffineTransformMakeRotation((angleType == 1) ? DEGREES_TO_RADIANS(270) : DEGREES_TO_RADIANS(360))];
}
}
[container addSubview:word_l];
while ([self viewIntersectsWithAnotherView:container chosenView:word_l]) {
viewPositionMovingStep++;
[self placeItem:container :word_l];
}
}
}
- (void)placeItem:(UIView *)container :(UILabel *)word_l
{
CGRect initFr = word_l.frame;
for (int i = 1; i <= 8; i++) {
CGRect f = word_l.frame;
switch (i) {
case 1:
f.origin.x = f.origin.x + viewPositionMovingStep;
break;
case 2:
f.origin.x = f.origin.x + viewPositionMovingStep;
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 3:
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 4:
f.origin.x = f.origin.x - viewPositionMovingStep;
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 5:
f.origin.x = f.origin.x - viewPositionMovingStep;
break;
case 6:
f.origin.x = f.origin.x - viewPositionMovingStep;
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
case 7:
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
case 8:
f.origin.x = f.origin.x + viewPositionMovingStep;
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
default:
break;
}
word_l.frame = f;
if ([self viewIntersectsWithAnotherView:container chosenView:word_l]) {
word_l.frame = initFr;
} else {
viewPositionMovingStep = 0;
return;
}
}
}
-(BOOL)viewIntersectsWithAnotherView:(UIView *)container chosenView:(UIView *)chosenView
{
for(UIView *view in [container subviews]){
if (![chosenView isEqual:view]){
BOOL framePartiallyOut = !CGRectEqualToRect(CGRectIntersection(chosenView.superview.bounds, chosenView.frame), chosenView.frame);
if (usingRange) {
if([self view:chosenView intersectsWith:view] || framePartiallyOut){
return YES;
}
} else {
if(CGRectIntersectsRect(chosenView.frame, view.frame) || framePartiallyOut){
return YES;
}
}
}
}
return NO;
}
- (BOOL)view:(UIView *)view1 intersectsWith:(UIView *)view2
{
CGPoint poly1[4];
CGRect bounds1 = view1.bounds;
poly1[0] = [view1 convertPoint:bounds1.origin toView:nil];
poly1[1] = [view1 convertPoint:CGPointMake(bounds1.origin.x + bounds1.size.width, bounds1.origin.y) toView:nil];
poly1[2] = [view1 convertPoint:CGPointMake(bounds1.origin.x + bounds1.size.width, bounds1.origin.y + bounds1.size.height) toView:nil];
poly1[3] = [view1 convertPoint:CGPointMake(bounds1.origin.x, bounds1.origin.y + bounds1.size.height) toView:nil];
CGPoint poly2[4];
CGRect bounds2 = view2.bounds;
poly2[0] = [view2 convertPoint:bounds2.origin toView:nil];
poly2[1] = [view2 convertPoint:CGPointMake(bounds2.origin.x + bounds2.size.width, bounds2.origin.y) toView:nil];
poly2[2] = [view2 convertPoint:CGPointMake(bounds2.origin.x + bounds2.size.width, bounds2.origin.y + bounds2.size.height) toView:nil];
poly2[3] = [view2 convertPoint:CGPointMake(bounds2.origin.x, bounds2.origin.y + bounds2.size.height) toView:nil];
CGPoint ctl2 = [view1 convertPoint:poly2[0] fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctl2)){
return YES;
}
CGPoint ctr2 = [view1 convertPoint:poly2[1] fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctr2)){
return YES;
}
CGPoint cbr2 = [view1 convertPoint:poly2[2] fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbr2)){
return YES;
}
CGPoint cbl2 = [view1 convertPoint:poly2[3] fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbl2)){
return YES;
}
CGPoint ctl1 = [view2 convertPoint:poly1[0] fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctl1)){
return YES;
}
CGPoint ctr1 = [view2 convertPoint:poly1[1] fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctr1)){
return YES;
}
CGPoint cbr1 = [view2 convertPoint:poly1[2] fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbr1)){
return YES;
}
CGPoint cbl1 = [view2 convertPoint:poly1[3] fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbl1)){
return YES;
}
return NO;
}
-(int)getRandomNumberBetween:(int)from to:(int)to
{
return (int)from + arc4random() % (to-from+1);
}
これはどのように正しく配置されたラベルに見えますか:
ランダムに生成された角度 (範囲 270 ～ 360、0 ～ 90) を持つこの短い単語の例:
お気づきのように、そこにテキストが表示されず、ラベルが展開されているように見え、この場合交差チェッカーが機能していません。また、から呼び出された関数viewDidLoadまたはviewDidApperこのチェッカーがまったく機能していない場合、本当に助けが必要です。何かアイデアはありますか? ありがとうございました！