Implements fast rendering of LineStrings and Polygons pre-applying a
view threshold filter to the geometries to render in qgis. Also disable
'Antialiasing' when it is possible.

View Table of test results in 'http://hub.qgis.org/issues/8725'

(This version of branch implements the improvement in vector-providers)

Implements fast rendering of LineStrings and Polygons pre-applying a
view threshold filter to the geometries to render in qgis. Also disable
'Antialiasing' when it is possible.

View Table of test results in 'http://hub.qgis.org/issues/8725'

Fix compile errors: include "std::limits"

The simplification is configurable by layer, also this commit contains
reording of code.

I have pending show in the properties form of layer a check for
enable/disable the simplification

Shows a new rendering tab in the layer options form for configure the
drawing simplification.

On some platforms (e.g. X11), the drawConvexPolygon() function can be
faster than the drawPolygon() function.

https://qt-project.org/doc/qt-4.8/qpainter.html#drawConvexPolygon

Disable the drawing simplification when the editmode is enabled, the
geometries are cached for snapping

'AA' disabling for '1-pixel geometries' uses the layer simplification
configuration

Disable the simplification of geometries when the render request comes
from a print composition to avoid rendering quality issues

The drawing simplification can be configured using flags that indicates
what simplification type can be executed (Point, BBOX and AA)

Fix the #9062 issue to avoid that OgrFeatureIterator always fetchs all
feature attributes

http://hub.qgis.org/projects/quantum-gis/repository/revisions/af73f30c27b5ee4860842d79eb59ad3b584e0965

AA-disabling only is executed for '1-pixel' geometries when the
configuration slider is greater than minimum value. The rendering speed
up is lower (http://hub.qgis.org/issues/8725#note-59), but with higher
quality result

Implements fast rendering of LineStrings and Polygons pre-applying a
view threshold filter to the geometries to render in qgis. Also disable
'Antialiasing' when it is possible.

View Table of test results in 'http://hub.qgis.org/issues/8725'

(This version of branch implements the improvement in vector-providers)

Implements fast rendering of LineStrings and Polygons pre-applying a
view threshold filter to the geometries to render in qgis. Also disable
'Antialiasing' when it is possible.

View Table of test results in 'http://hub.qgis.org/issues/8725'

Fix compile errors: include "std::limits"

The simplification is configurable by layer, also this commit contains
reording of code.

I have pending show in the properties form of layer a check for
enable/disable the simplification

Shows a new rendering tab in the layer options form for configure the
drawing simplification.

On some platforms (e.g. X11), the drawConvexPolygon() function can be
faster than the drawPolygon() function.

https://qt-project.org/doc/qt-4.8/qpainter.html#drawConvexPolygon

Disable the drawing simplification when the editmode is enabled, the
geometries are cached for snapping

'AA' disabling for '1-pixel geometries' uses the layer simplification
configuration

Disable the simplification of geometries when the render request comes
from a print composition to avoid rendering quality issues