让我阐述:
我愿装上图像(最好是使用季茨),使其具有透明度。 然后,我希望能够从这一形象中汲取一线,并能够看到该线的内容。 这是可能的吗? 这是否涉及某种类型的掩盖,如果是的话,我会研究哪些业绩问题?
http://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CGContext/Reference/vis.html” rel=“nofollow” 在采用混合模式时,你首先以透明的方式塑造你的形象,然后确定混合模式,然后打上线或其他形状。 我并不真正了解混合模式,但也许有些人可能认为合适。 否则,只能尝试什么。 你们也许能够进行这一审判,在一些图像操纵方案中出现错误,在这种方案中,你可以将混合模式放在一层...... 在剪辑时,你首先创造了一条滑坡的道路,用 我认为,第一种做法是,你可能有不同的甲型六氯环己烷,但第二种做法是,甲型六氯环己烷要么是显而易见的,要么是隐蔽的。ContextSetBlendMode <>,或可到
CGContextClip,然后引出你的形象。
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