The following example shows how you can set the miter limit on a Flex 4 Path stroke by setting the miterLimit property on a stroke object.

Full code after the jump.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.
For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/01/16/setting-the-miter-limit-on-a-path-stroke-in-flex-gumbo/ -->
<Application name="Path_stroke_miterLimit_test"
        xmlns="http://ns.adobe.com/mxml/2009"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <Declarations>
        <String id="pathData">M 0 0 L 200 0 L 0 80 Z</String>
    </Declarations>

    <ApplicationControlBar dock="true">
        <Form styleName="plain">
            <FormItem label="miterLimit:">
                <HSlider id="slider"
                        minimum="0"
                        maximum="10"
                        value="0"
                        tickInterval="1"
                        liveDragging="true" />
            </FormItem>
        </Form>
    </ApplicationControlBar>

    <Graphic>
        <Path id="path" data="{pathData}">
            <stroke>
                <SolidColorStroke id="pathStroke"
                        joints="miter"
                        miterLimit="{slider.value}"
                        color="red"
                        weight="40" />
            </stroke>
        </Path>
        <Path data="{pathData}">
            <stroke>
                <SolidColorStroke
                        color="black"
                        weight="1" />
            </stroke>
        </Path>
    </Graphic>

</Application>

You can also set the miterLimit property using ActionScript, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/01/16/setting-the-miter-limit-on-a-path-stroke-in-flex-gumbo/ -->
<Application name="Path_stroke_miterLimit_test"
        xmlns="http://ns.adobe.com/mxml/2009"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <Script>
        <![CDATA[
            import mx.events.SliderEvent;

            private function slider_change(evt:SliderEvent):void {
                pathStroke.miterLimit = evt.value;
            }
        ]]>
    </Script>

    <Declarations>
        <String id="pathData">M 0 0 L 200 0 L 0 80 Z</String>
    </Declarations>

    <ApplicationControlBar dock="true">
        <Form styleName="plain">
            <FormItem label="miterLimit:">
                <HSlider id="slider"
                        minimum="0"
                        maximum="10"
                        value="0"
                        tickInterval="1"
                        liveDragging="true"
                        change="slider_change(event);" />
            </FormItem>
        </Form>
    </ApplicationControlBar>

    <Graphic>
        <Path id="path" data="{pathData}">
            <stroke>
                <SolidColorStroke id="pathStroke"
                        joints="miter"
                        color="red"
                        weight="40" />
            </stroke>
        </Path>
        <Path data="{pathData}">
            <stroke>
                <SolidColorStroke
                        color="black"
                        weight="1" />
            </stroke>
        </Path>
    </Graphic>

</Application>

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.

 
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About The Author

Peter deHaan

Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.

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