Thanks Michael, appreciate the effort.
I'll keep playing around with it as well.
Regards,
Dave
On Tue, May 3, 2011 at 5:22 PM, mbedward [via OSGeo.org]
<[email protected]> wrote:
> A non-progress update...
>
> I've tried a few things but none have worked very well so far. I'll
> consult the nefarious swing hacks book to see if it suggests a
> solution.
>
> Michael
>
> On 29 April 2011 22:09, Michael Bedward <[hidden email]> wrote:
>> Hello Dave,
>>
>> Sorry for the delay between replies. I'll have a look at this
>> tomorrow (Sydney time) and see if there's anything simple that can be
>> done to fix the problem you're having, or at least improve things.
>>
>> Stay tuned to this channel.
>>
>> Michael
>>
>> On 28 April 2011 14:02, dscerri <[hidden email]> wrote:
>>> Thanks Michael.
>>>
>>> I've had a play around with it but am having no luck.
>>>
>>> I tried changing it so that rather than create a new BufferedImage
>>> each time, it instead calls the currently unused clearBaseImage()
>>> method:
>>> if(baseImage != null && baseImageGraphics
>>> !=
>>> null) {
>>> this.clearBaseImage();
>>> }else {
>>> baseImage = new
>>> BufferedImage(curPaintArea.width + 1, curPaintArea.height + 1,
>>>
>>> BufferedImage.TYPE_INT_ARGB);
>>> baseImageGraphics =
>>> baseImage.createGraphics();
>>>
>>> }
>>> I have left the onRenderingComplete method the same, as it seems this
>>> only paints the area, and doesn't first clear it. I've also played
>>> around with different combinations and had no luck whatsoever.
>>>
>>> This still results in the entire map getting cleared and repainted
>>> every time something changes in one of the layers, or a zoom/pan is
>>> performed. This makes everything really jerky, especially when one of
>>> the layers is constantly changing, in order to produce an animation.
>>>
>>> Does anyone have any suggestions for making this smoother?
>>>
>>> Regards,
>>>
>>> Dave
>>>
>>> On Wed, Apr 20, 2011 at 3:49 PM, mbedward [via OSGeo.org]
>>> <[hidden email]> wrote:
>>>> Hello Dave,
>>>>
>>>> You'll want to modify the JMapPane.paintComponent method, and possibly
>>>> also the onRenderingCompleted method.
>>>>
>>>> Hope this helps,
>>>> Michael
>>>>
>>>>
>>>> On 20 April 2011 15:30, dscerri <[hidden email]> wrote:
>>>>> Hi,
>>>>>
>>>>> I am using the imagemosaic-jdbc plugin, with some large image files
>>>>> which
>>>>> are being displayed in a JMapPane. I have noticed that when repainting
>>>>> is
>>>>> required (due to resizing etc) the rendering seems to follow this
>>>>> process:
>>>>>
>>>>> (I haven't been able to locate this process in the code, so its purely
>>>>> speculation based on experimentation.)
>>>>> 1. Clear dirty area of screen
>>>>> 2. Submit request to DB in a separate thread
>>>>> 3. When request is returned, paint the cleared area of screen.
>>>>>
>>>>> This means that when the request takes a non-trivial amount of time,
>>>>> the
>>>>> map
>>>>> pane changes to white for a period and then back to the image. IMO, it
>>>>> would
>>>>> be better to not clear the dirty area until the new image is ready to
>>>>> be
>>>>> painted, so there would not be a white period.
>>>>>
>>>>> Is this possible to implement? Is my guessing of how the rendering is
>>>>> done
>>>>> correct? Could someone point me to the appropriate code so I can at
>>>>> least
>>>>> implement this for my own purposes?
>>>>>
>>>>> Thanks very much for your help, it is much appreciated.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Dave
>>>>>
>>>>> --
>>>>> View this message in context:
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