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10 Working with Web Graphics

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1、在建原型时,把每个触发事件的地方都做成一个hotspot。而在真正导出时会把一些背景相同的、重复的hotspot去调,只剩一个slice。把所有的hotspot去调,并转为slice。

 

2、导出时把一些hotspot或slice的属性面版中标志为jpeg的属性改为gif adaptive 256。

 

3、切背景时,把变化的部份切开成一块,其余的切一条窄长的区域。

 

4、由于有些小图用gif时文件会小一点,有时会png时小一点。所以可以先转到preview视图,结合optimise面版逐个点击并优化。

 

5、对jpeg的图片大小优化。在一幅图中,如果目标物体占图比例不大,而背景比较简单可以把目标对像放进选区,然后点击菜单modify-selective jpeg-save selection as mask。然后在optimize面版中对quality设低一点,selective quaility设高一点。而smoothing的值越大,文件越小。

 

6、对于一些大的jpeg图需要使用ctrl+c,ctrl+n单独拿出来优化

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