我一直试图使用SKCropNode将蒙版应用于SKShapeNode,但迄今为止没有成功。认为这是一个SpriteKit的错误 - 以下是代码片段:
SKNode* contentNode = [SKNode node];
// picture - use an image bigger than 50x50
SKSpriteNode *pictureNode = [SKSpriteNode spriteNodeWithImageNamed:@"tree"];
// triangle
SKShapeNode* triangleNode = [SKShapeNode node];
UIBezierPath* triangleNodeBezierPath = [[UIBezierPath alloc] init];
[triangleNodeBezierPath moveToPoint:CGPointMake(0.0, 0.0)];
[triangleNodeBezierPath addLineToPoint:CGPointMake(0.0, 100.0)];
[triangleNodeBezierPath addLineToPoint:CGPointMake(50.0, 100.0)];
[triangleNodeBezierPath closePath];
triangleNode.path = triangleNodeBezierPath.CGPath;
triangleNode.fillColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1];
// create a mask
SKSpriteNode *mask = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size: CGSizeMake(50, 50)]; //50 by 50 is the size of the mask
// create a SKCropNode
SKCropNode *cropNode = [SKCropNode node];
[cropNode addChild: contentNode];
[cropNode setMaskNode: mask];
[self addChild: cropNode];
[contentNode addChild:pictureNode]; // pictureNode is being cropped
[contentNode addChild:triangleNode]; // triangleNode is not
cropNode.position = CGPointMake( CGRectGetMidX (self.frame), CGRectGetMidY (self.frame));
有人能提供这个问题的解决方法吗?非常感谢!