Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-16 Thread Sandro Santilli
On Fri, Jan 16, 2015 at 09:00:38AM +0700, Mathieu Pellerin wrote:
 Sandro,
 
 The last few weeks has been a nice leap forward when it comes to your
 rotation feature, congratulation on that.
 
 IMO, based on the improvements, it's worth considering _removing the
 activation option altogether_ from the preference window. I can't see
 any stability and usability issue that would warrant disabling it.

+1

 That said, in my view, a basic composer support (i.e. map item's
 rotation feature) should be moved at the top of your priority list.

Maybe set the priority yourself on the issue tracker ?
http://hub.qgis.org/issues/11912

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Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-16 Thread Sandro Santilli
On Fri, Jan 16, 2015 at 12:48:53PM +0700, Mathieu Pellerin wrote:

 Regarding the map overview issue, this got me to think that instead of
 having a map visibility extend calculation code in the composer map item,
 the QgsMapSettings object should have a function that returns a visible
 extend polygon (in WKT string, or whatever). That would simplify and
 bulletproof the code in many places beyond the composer map item.

Agreed. I've rencently pushed a local implementation of that calculation
in the grid decoration code, if you want to move it up.

Right now we have the concept of visibleExtent which is still a rectangle
(enclosing the actual visible polygon) and an extent (which is just an
encoding of center  scale, and might be better to deprecate at one point).
It would not be bad to add a visibleArea or visiblePolygon function.
Then the visibleExtent one could be implemented by just taking the
extent fo the visiblePolygon.

More tests would also be important to add...

--strk;
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Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-15 Thread Paolo Cavallini
Il 15/01/2015 15:59, Sandro Santilli ha scritto:
 Leftover issues (open for funding):
 
  - Plugin layers (#11900) -- needs feedback
  - Overview map (#11862) -- minor, IMHO
  - Composer support (#11912) -- wish ?
  - Atlas doesn't consider map rotation when setting scale (#11954)

IMHO none of these are blockers

 At what time do you plan to meet ?

16 CET

thanks Sandro, and to the donors.

All the best.
-- 
Paolo Cavallini - www.faunalia.eu
QGIS  PostGIS courses: http://www.faunalia.eu/training.html
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[Qgis-developer] Rotation status and PSC meeting

2015-01-15 Thread Sandro Santilli
I've spent more time on rotation (only partially funded), fixing:

 - Label pre-rotation (#11814)
 - North Arrow Decoration (#11818)
 - Grid decoration (#11817)

Leftover issues (open for funding):

 - Plugin layers (#11900) -- needs feedback
 - Overview map (#11862) -- minor, IMHO
 - Composer support (#11912) -- wish ?
 - Atlas doesn't consider map rotation when setting scale (#11954)

Please report any other issue that might arise with rotation enabled
and properly tag it with the rotation label.

I'd like to partecipate to the PSC meeting tomorrow but it is only
possible for me before 18:00 CET. I hadn't found the schedule here:
http://hub.qgis.org/wiki/17/PSC_Meeting_16_January_2015
At what time do you plan to meet ?

--strk;

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Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-15 Thread Mathieu Pellerin
Sandro, Nyall,

Discussing this with Martin earlier today, he came up with a test patch to
see what would happen if the code was blindly modified to use
QgsMapSettings' setRotation() function. The result is interesting, it
actually _mostly_ works (see attached patch):
- before the patch, rotating the map composer of 45 degrees looked like
this: http://i.imgur.com/8e88VZf.png
- applying the patch, rotating the map composer of 45 degrees now looks
like this: http://i.imgur.com/VudbYrn.png

The map rotation without the patch shows the current limitations, namely
undesired rotated label, undesired rotated symbology, etc.

With the patch applied, the label is horizontal, and my centroid triangle
symbology's orientation is respected. There is however an issue with the
calculation of the rotated map extend leading to a slightly misplaced map
overview polygon on the larger map as well as a slight misalignment of the
grid.

Regarding the map overview issue, this got me to think that instead of
having a map visibility extend calculation code in the composer map item,
the QgsMapSettings object should have a function that returns a visible
extend polygon (in WKT string, or whatever). That would simplify and
bulletproof the code in many places beyond the composer map item.

Food for thoughts.

Math

On Fri, Jan 16, 2015 at 9:00 AM, Mathieu Pellerin nirvn.a...@gmail.com
wrote:

 Sandro,

 The last few weeks has been a nice leap forward when it comes to your
 rotation feature, congratulation on that.

 IMO, based on the improvements, it's worth considering _removing the
 activation option altogether_ from the preference window. I can't see
 any stability and usability issue that would warrant disabling it.

 That said, in my view, a basic composer support (i.e. map item's
 rotation feature) should be moved at the top of your priority list.
 Right now, the benefits of your rotation work _cannot_ be exported
 outside of the QGIS canvas, which IMO is a serious limitation. In most
 of my QGIS workflows, the final cartographic products are exported
 through the composer to obtain an high resolution file that can be
 printed out (i.e. I can't just go save the canvas as an image :) ).
 Not having map items make use of your rotation feature is a
 significant restriction.

 Cheers, and thanks again for the work,

 Math


 On Thu, Jan 15, 2015 at 9:59 PM, Sandro Santilli s...@keybit.net wrote:
  I've spent more time on rotation (only partially funded), fixing:
 
   - Label pre-rotation (#11814)
   - North Arrow Decoration (#11818)
   - Grid decoration (#11817)
 
  Leftover issues (open for funding):
 
   - Plugin layers (#11900) -- needs feedback
   - Overview map (#11862) -- minor, IMHO
   - Composer support (#11912) -- wish ?
   - Atlas doesn't consider map rotation when setting scale (#11954)
 
  Please report any other issue that might arise with rotation enabled
  and properly tag it with the rotation label.
 
  I'd like to partecipate to the PSC meeting tomorrow but it is only
  possible for me before 18:00 CET. I hadn't found the schedule here:
  http://hub.qgis.org/wiki/17/PSC_Meeting_16_January_2015
  At what time do you plan to meet ?
 
  --strk;
 
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/\   http://strk.keybit.net/services.html
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diff --git a/src/core/composer/qgscomposermap.cpp 
b/src/core/composer/qgscomposermap.cpp
index 3f0a29f..a811a02 100644
--- a/src/core/composer/qgscomposermap.cpp
+++ b/src/core/composer/qgscomposermap.cpp
@@ -202,6 +202,7 @@ QgsMapSettings QgsComposerMap::mapSettings( const 
QgsRectangle extent, const QS
   jobMapSettings.setMapUnits( ms.mapUnits() );
   jobMapSettings.setBackgroundColor( Qt::transparent );
   jobMapSettings.setOutputImageFormat( ms.outputImageFormat() );
+  jobMapSettings.setRotation( mEvaluatedMapRotation );
 
   //set layers to render
   QStringList theLayerSet = layersToRender();
@@ -362,9 +363,9 @@ void QgsComposerMap::paint( QPainter* painter, const 
QStyleOptionGraphicsItem* i
 painter-save();
 
 painter-translate( mXOffset, mYOffset );
-painter-translate( xTopLeftShift, yTopLeftShift );
-painter-rotate( mEvaluatedMapRotation );
-painter-translate( xShiftMM, -yShiftMM );
+//painter-translate( xTopLeftShift, yTopLeftShift );
+//painter-rotate( mEvaluatedMapRotation );
+//painter-translate( xShiftMM, -yShiftMM );
 painter-scale( scale, scale );
 painter-drawImage( 0, 0, mCacheImage );
 
@@ -413,9 +414,9 @@ void QgsComposerMap::paint( QPainter* painter, const 
QStyleOptionGraphicsItem* i
 double yTopLeftShift = ( cExtent.yMaximum() - rotationPoint.y() ) * 
mapUnitsToMM();
 painter-save();
 painter-translate( mXOffset, mYOffset );
-painter-translate( xTopLeftShift, yTopLeftShift );
-painter-rotate( mEvaluatedMapRotation );
-

Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-15 Thread Nyall Dawson
On 16 Jan 2015 2:00 am, Sandro Santilli s...@keybit.net wrote:


  - Atlas doesn't consider map rotation when setting scale (#11954)


Don't worry about this one - it's been around as long as atlas has existed
and wasn't introduced by your work. I plan on tackling it as part of the
layout refactor work.

The new method for rotating geometries will help a lot with this -- thank
you!

Nyall
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Re: [Qgis-developer] Rotation status and PSC meeting

2015-01-15 Thread Mathieu Pellerin
Sandro,

The last few weeks has been a nice leap forward when it comes to your
rotation feature, congratulation on that.

IMO, based on the improvements, it's worth considering _removing the
activation option altogether_ from the preference window. I can't see
any stability and usability issue that would warrant disabling it.

That said, in my view, a basic composer support (i.e. map item's
rotation feature) should be moved at the top of your priority list.
Right now, the benefits of your rotation work _cannot_ be exported
outside of the QGIS canvas, which IMO is a serious limitation. In most
of my QGIS workflows, the final cartographic products are exported
through the composer to obtain an high resolution file that can be
printed out (i.e. I can't just go save the canvas as an image :) ).
Not having map items make use of your rotation feature is a
significant restriction.

Cheers, and thanks again for the work,

Math


On Thu, Jan 15, 2015 at 9:59 PM, Sandro Santilli s...@keybit.net wrote:
 I've spent more time on rotation (only partially funded), fixing:

  - Label pre-rotation (#11814)
  - North Arrow Decoration (#11818)
  - Grid decoration (#11817)

 Leftover issues (open for funding):

  - Plugin layers (#11900) -- needs feedback
  - Overview map (#11862) -- minor, IMHO
  - Composer support (#11912) -- wish ?
  - Atlas doesn't consider map rotation when setting scale (#11954)

 Please report any other issue that might arise with rotation enabled
 and properly tag it with the rotation label.

 I'd like to partecipate to the PSC meeting tomorrow but it is only
 possible for me before 18:00 CET. I hadn't found the schedule here:
 http://hub.qgis.org/wiki/17/PSC_Meeting_16_January_2015
 At what time do you plan to meet ?

 --strk;

   ()   Free GIS  Flash consultant/developer
   /\   http://strk.keybit.net/services.html
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