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<p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 13px; margin-left: 0;"><span class="f_Heading1" style="font-size:10pt; font-family: Arial,'Lucida Sans Unicode','Lucida Grande','Lucida Sans';display:inline-block;width:13px;margin-left:-13px">▪</span><span class="f_Heading1" style="font-size: 10pt;">MG-Picker工作室尽全力让您设计强大的picker，在不用敲任何代码的情况下。</span></p><p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 13px; margin-left: 0;"><span class="f_Heading1" style="font-size:10pt; font-family: Arial,'Lucida Sans Unicode','Lucida Grande','Lucida Sans';display:inline-block;width:13px;margin-left:-13px">▪</span><span class="f_Heading1" style="font-size: 10pt;">不过如果您有一些MEL/Python脚本开发经验，那么您设计的Picker可以变得更加强大。</span></p><p class="p_Normal" style="line-height: 1.80;"> </p>
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<p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 13px; margin-left: 0;"><span class="f_Heading1" style="font-size:10pt; font-family: Arial,'Lucida Sans Unicode','Lucida Grande','Lucida Sans';display:inline-block;width:13px;margin-left:-13px">▪</span><span class="f_Heading1" style="font-size: 10pt;">以下就一些您可以发挥脚本开发能力的地方：</span></p><p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">- </span><span class="f_Heading1" style="font-size: 9pt;">Picker里可编程的属性. </span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">所有这些属性都支持mel或python语言。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; color: #ff0000;">Picker的加载后命令，命名空间已改变命令， 及鼠标已进入命令，:</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">加载后命令: 当picker被加载打开后，完成读取后这个命令会立即被执行。比较推荐的作法是，在这个命令script里，你编写声明所有picker功能支持的mel及python函数，因为它们在picker加载后立即被source而可用，这样具体的picker按钮里的命令则只需要调用这边声明的函数即可。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">命名空间已改变命令：每次Picker的命名空间改变了，不管是手动还是程序API命令改变，这个命令会被 执行。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">鼠标已进入命令：每当鼠标进入picker区域，都会执行这个命令。 查看 <a href="syncvaluewithmaya.htm" class="topiclink">跟Maya同步</a> 章节来了解更多。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span style="width:48px;display:inline-block"> </span> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt;">编辑这些Picker命令的三种方式:</span></p>
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<p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 20px; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size:9pt;display:inline-block;width:20px;margin-left:-20px">1.</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">点击"Picker"菜单并选择"设置Picker属性..";</span> </p><p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 20px; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size:9pt;display:inline-block;width:20px;margin-left:-20px">2.</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">激活编辑工具，右键空白处，在菜单里先把"设置Picker属性.."</span></p><p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 20px; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size:9pt;display:inline-block;width:20px;margin-left:-20px">3.</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">直接访问"Picker"界面面板。</span></p><p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; color: #ff0000;">命令按钮命令:</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal; color: #ff0000;"> </span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">这个按钮命令在你左键点击按钮并在命令按钮内部松开后执行。 要编辑命令按钮命令，选择那个命令按钮，在属性编辑器里拖动到底部，会看到编辑命令的代码编辑器。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span style="width:48px;display:inline-block"> </span> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; color: #ff0000;">属性按钮的属性值 改变前后命令:</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt;">属性值 改变前:</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;"> 该命令在属性值被改变前被执行。主要用来在属性值改变之前获取并记录一些状态，通常用在ik/fk切换前，记录一些信息。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 57px;"><span class="f_Heading1" style="font-size: 9pt;">属性值 改变后:</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;"> 该命令在属性值被实际改变后立即被执行。如果属性值没有实际改变则不执行。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 55px;"><img alt="Warning" width="16" height="16" style="margin:0;width:16px;height:16px;border:none" src="warning.gif"/><span style="font-size: 9pt; color: #ff0000;"> </span><span style="font-size: 9pt; color: #ff0000;">要小心属性值 改变前后命令可能会造成死循环，比如：</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 55px;"><span style="font-size: 9pt; color: #ff0000;">attrButton1: 在 属性值 改变前命令里编辑了attrButton2的属性值。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 55px;"><span style="font-size: 9pt; color: #ff0000;">attrButton2: 在 属性值 改变后命令里编辑了attrButton1的属性值。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 55px;"><span style="font-size: 9pt; color: #ff0000;">这样就造成死循环，可能导致Maya崩掉。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; color: #ff0000;">滑条的属性值 改变命令</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal; color: #ff0000;">:</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;"> 该命令滑条属性值被实际改变后立即被执行。如果属性值没有实际改变则不执行。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; color: #ff0000;">Picker对象的菜单:</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;"> 每个picker对象都可以带有一个菜单或marking menu。要编辑对象的菜单，选择那个picker对象，然后在菜单编辑器里编辑。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">- 写</span><span class="f_Heading1" style="font-size: 9pt;">其它类型picker到MG-Picker的转换器</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">。目前已自带有abxPicker 及nickPicker的转换器。带有这些类型的picker节点的场景，其picker节点将会自动转换为mgpicker并显示。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">- 编写</span><span class="f_Heading1" style="font-size: 9pt;">命令按钮预设</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">， 将来你可以用这些预设脚本来快速生成命令按钮而无需再敲代码。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">- 编写</span><span class="f_Heading1" style="font-size: 9pt;">代码片段</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">，以提高将来敲代码的效率。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">- 编写</span><span class="f_Heading1" style="font-size: 9pt;">自动加载的脚本</span><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">，将它们放到"Maya/版本/scripts/MG-PickerStudio/MGPicker_UserConfig/AutoSourced/" 里使它跟随MG-Picker工作室加载时而被自动加载。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 48px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">这个机制将使您可以保证一些脚本，在您的picker打开时已被加载，以支持到您的picker里的一些命令功能。</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"> </p>
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<p class="p_Normal" style="text-indent: 0; line-height: 1.80; padding-left: 13px; margin-left: 0;"><span class="f_Heading1" style="font-size:10pt; font-family: Arial,'Lucida Sans Unicode','Lucida Grande','Lucida Sans';display:inline-block;width:13px;margin-left:-13px">▪</span><span class="f_Heading1" style="font-size: 10pt;">MG-Picker工作室提供的MEL&Python API主要是这三个命令：</span></p><p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpicker.htm" class="topiclink">MGPicker</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpickerview.htm" class="topiclink">MGPickerView</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpickeritem.htm" class="topiclink">MGPickerItem</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpickerlink.htm" class="topiclink">MGPickerLink</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpickermenu.htm" class="topiclink">MGPickerMenu</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 10pt; font-weight: normal;"><a href="mgpickermenuitem.htm" class="topiclink">MGPickerMenuItem</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"> </p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span class="f_Heading1" style="font-size: 9pt; font-weight: normal;">除了这三个命令，还有其它的命令，不过这些命令主要是供程序内部使用：</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="mgpickerservice.htm" class="topiclink">MGPickerService</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="mgimageprocesser.htm" class="topiclink">MGImageProcesser</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;">* MGPickerValue: 这个命令则纯粹供内部使用，用来支持picker对象在动画师交互时的undo/redo.</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;">* MGPickerAttrSyncer: 这个命令则纯粹供内部使用. 用来同步Maya场景及picker的状态.</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;">* MGPGuiTest: 这个命令则纯粹供内部使用. 用来编辑界面的单元测试.</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;">* MGPTest: 这个命令则纯粹供内部使用. 用来编辑单元测试.</span><br />
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<span style="font-size: 9pt;"> </span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;">其它开发相关帮助主题：</span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="commandbuttonpresets.htm" class="topiclink">命令按钮预设</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="converters.htm" class="topiclink">转换器</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="codesnippets.htm" class="topiclink">代码片段</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="https://www.helpandmanual.com/order.html" class="topiclink">跟Maya同步</a></span></p>
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<p class="p_Normal" style="line-height: 1.80; margin: 0 0 0 24px;"><span style="font-size: 9pt;"><a href="tipsforprogrammer.htm" class="topiclink">小提示</a></span></p>
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