OpenCPN General

[janth]

Just an attahement with a screenshot to show it is working :-)

[janth]

seems the attachement did not work so I try again.

[bcn]

And now to torture the "Split canvas" or the "Templates" for display settings.

Or the completely revamped route manager...

[janth]

A quick tour of the split canvas, templates and route manager, trying to use as many options as possible has revealed no problems.


However, when on OpenGL mode (not yet tried non-OpenGL mode as thorough) I see problems that when I change options for which items to dispaly in vector cards, the changes do not always appear as expected.

One example of this is increasing the CM93 detail level, which initially does not lead to any change, but after reading in a template it suddenly appears (at least that is my current understanding). So it appears that there are some bugs in the code that control how display options are actually rendered on screen.



The other thing I noticed was already described in a previous mail. When zooming out on certain areas, then suddenly all waterways disappear in one part of the screen where the chart has one resolution whereas it remains visible in others. This effect is ***seriously*** annoying but can be alleviated somewhat by going to advanced display settings and increase chart zoom/scaling for vector charts, at the "cost" of extra chart details which leads to some cluttering when you zoom out (this can be reduced through vector chart settings "Decluttered Text" and "Reduced Detail at Small Scale". But evenn so, when you zoom out enough, it will eventually appear, regardless of the scaling is set to max. value 5. But at default setting 0 it is crippling for the use in the affected chart areas.


I will continue testing. Please let me know if I will receive some feedback on the issues I find, and if they are resolved. It makes testing a lot more interesting to see that it has some effects :.-)


Jan

[bcn]

Originally Posted by janth

The other thing I noticed was already described in a previous mail. When zooming out on certain areas, then suddenly all waterways disappear in one part of the screen where the chart has one resolution whereas it remains visible in others. This effect is ***seriously*** annoying but can be alleviated somewhat by going to advanced display settings and increase chart zoom/scaling for vector charts, at the "cost" of extra chart details which leads to some cluttering when you zoom out (this can be reduced through vector chart settings "Decluttered Text" and "Reduced Detail at Small Scale". But evenn so, when you zoom out enough, it will eventually appear, regardless of the scaling is set to max. value 5. But at default setting 0 it is crippling for the use in the affected chart areas.
Jan

Jan...

Detail weighting on Zoom/Quilted charts is indeed a task that does not have a general solution.
The philosophy of the different Hydrographical Offices is quite individual about for example SCAMIN (minimum scale at which an object shall get rendered).
Combine this with very different scales of charts involved in the quilting.
Therefore the Detail slider exists, to adopt to the given case.
Btw.: the "D" short cut gives direct access to the slider.
For us +4 is mostly ok for vector charts.

German Bight with the charts from BSH is especially challenging when combined with the Danish or Dutch charts. Or InlandENCs with a scale of 1:1000. And BSH will change their layout and cut of the cells this year. Waiting for surprises...

A template might help here if you want to be prepared for different usage cases.

Hubert

[janth]

I have attached two images that show the aforementioned "scaling problem". In one image you can see everything and in another image I have zoomed out with the minusk key once, and one half of the waterway is now brown and all annotations disappeared. I used detail level of "0" in the advanced display settings. At a detail level of 5, the problem will only appear after several more zoom-out events.

[janth]

I found out that the scaling problem appears to be a consequence of "chart quilting". When I de-select that option it seems to disappear. I guess I will have to read the documentation to find out what this option really does. Is this expected behaviour ?

[bcn]

This is obviously a bug..
What happen with OpenGL OFF in this case?

[janth]

Initially I thought that turning off quiliting solved the problem. It seems it just solved it for the area I looked at. Further to the west in same area other problems turned up. I wil investigate in more detail to see if I can come up with some more reproducible results. It would appear that if you have access to the danish map I have, then you should be able to use that as a test case. Strangely, most other areas I have looked at behave just fine. I think there may be one or two other places I ran into it. If need be I can attempt to find them. But the best avenu would be if you had access to the same charts for your debugging purposes.

[janth]

The problem seesm to be unrelated to use of OpenGL

[bcn]

We do have access to the DK sets. Running o-charts...

[janth]

While toggling OpenGL on again in the affected area, I got an error. I have attached image of the errror message popup and log file of the error.

[janth]

It appears it was not allowed to upload a text file. So I attach a picture of the log file instead.

[bcn]

Just rename the file to ...txt.doc
Restrictions of the forum.

And Jan: perhaps better to open a dedicated thread or to report at Github.
Here in the general thread your issue might not get the attention directly.

[janth]

The aforementioned error appears reproducibly when switching on/off OpenGL in the affected areaa.