[OpenLayers-Dev] [Polygon Rendering] Inverse fill

[RICHARD Didier]

> On Saturday, May 19, 2012, RICHARD Didier wrote:
>
>>
>> > On Saturday, May 19, 2012, Andreas Hocevar wrote:
>> >
>> >> On Sat, May 19, 2012 at 5:36 PM, RICHARD Didier
>> >> <didier.richard at ign.fr <javascript:;><javascript:;>>
>> >> wrote:
>> >> > btw, using the Canvas renderer won't work for IE, will it ?
>> >>
>> >> No, but the VML renderer also shouldn't have this issue.
>> >
>> >
>> >
>> > Right. So to use Canvas in capable browsers and VML in others you'd
>> use
>> > `renderers: ['VML', 'Canvas']` in the layer config.
>> >
>>
>> In that case, why not changing :
>>
>>    /**
>>     * Property: renderers
>>     * {Array(String)} List of supported Renderer classes. Add to this
>> list to
>>     * add support for additional renderers. This list is ordered:
>>     * the first renderer which returns true for the  'supported()'
>>     * method will be used, if not defined in the 'renderer' option.
>>     */
>>    renderers: ['SVG', 'VML', 'Canvas'],
>>
>> into :
>>
>>    /**
>>     * Property: renderers
>>     * {Array(String)} List of supported Renderer classes. Add to this
>> list to
>>     * add support for additional renderers. This list is ordered:
>>     * the first renderer which returns true for the  'supported()'
>>     * method will be used, if not defined in the 'renderer' option.
>>     */
>>    renderers: ['VML', 'Canvas', 'SVG'],
>>
>> in OpenLayers.Layer.Vector as most of modern browser would support
>> Canvas
>> ? (even if old browser will have to check for the two first before
>> chosing
>> SVG !) Is there a speed issue behind that order of renderers ?
>
>
> As far as I know the Canvas renderer re-renders features on each map move.
> This may have performance implications. It also has an impact on user
> experience ? features disappear and reappear.
>

Ok, so the workaround (VML, Canvas) cannot be considered as a good
solution : better cut the geometry and keep VML, SVG, Canvas order.

didier

>
> --
> Eric Lemoine
>
> Camptocamp France SAS
> Savoie Technolac, BP 352
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>
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>


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