用于处理点而不是像素的CCDirector/CCNode类别

Posted 2021-02-25

#pragma mark CCDirector Category for Point Handling
 
 
#import "cocos2d.h"
 
 
@interface CCDirector (Points)
 
- (CGSize) ptWinSize;
 
- (CGPoint) convertToPt:(CGPoint)point;
- (CGPoint) convertToPx:(CGPoint)point;
 
@end
 
 
@implementation CCDirector (Points)
 
- (CGSize) ptWinSize {
	CGSize s = [self winSize];
	CGPoint p = [self convertToPt:ccp(s.width, s.height)];
	return CGSizeMake(p.x, p.y);
}
 
 
- (CGPoint) convertToPt:(CGPoint)point {
	return ccpMult(point, 1.0/self.contentScaleFactor);
}
 
- (CGPoint) convertToPx:(CGPoint)point {
	return ccpMult(point, self.contentScaleFactor);
}
 
@end
 
 
#pragma mark CCNode Category for Point Handling
 
 
@interface CCNode (Points)
 
@property (assign) CGPoint ptPosition;
@property (assign) CGSize ptContentSize;
 
- (CGPoint) ptConvertToNodeSpace:(CGPoint)point;
- (CGPoint) ptConvertToWorldSpace:(CGPoint)point;
 
@end
 
 
@implementation CCNode (Points)
 
- (void) setPtPosition:(CGPoint)pos {
	self.position = [[CCDirector sharedDirector] convertToPx:pos];
}
 
- (CGPoint) ptPosition {
	return [[CCDirector sharedDirector] convertToPt:self.position];
}
 
- (void) setPtContentSize:(CGSize)size {
	CGPoint p = [[CCDirector sharedDirector] convertToPx:ccp(size.width, size.height)];
	self.contentSize = CGSizeMake(p.x, p.y);
}
 
- (CGSize) ptContentSize {
	CGPoint p = [[CCDirector sharedDirector] convertToPt:ccp(self.contentSize.width, self.contentSize.height)];
	return CGSizeMake(p.x, p.y);
}
 
- (CGPoint) ptConvertToNodeSpace:(CGPoint)point {
	point = [[CCDirector sharedDirector] convertToPx:point];
	point = [self convertToNodeSpace:point];
	point = [[CCDirector sharedDirector] convertToPt:point];
	return point;
}
 
- (CGPoint) ptConvertToWorldSpace:(CGPoint)point {
	point = [[CCDirector sharedDirector] convertToPx:point];
	point = [self convertToWorldSpace:point];
	point = [[CCDirector sharedDirector] convertToPt:point];
	return point;
}
 
@end