[birt-dev] Checkin: Chart engine performance optimizations

["David Michonneau" <dmichonneau@xxxxxxxxxxx>]

- Summary:

Chart engine performance optimizations

- Bugzilla Bug (s) Resolved:

#117059 - Optimize chart drawing using medium to large datasets

- Description:

The X-Axis labels auto-drop feature introduced some performance hit, this check-in aims to optimize this new feature.

Use lightweight classes instead of EMF classes for auto-dropping X-Axis labels computations

Optimization in X-Axis labels computations to avoid unnecessary polygons creation, and containment/intersection calculus

New IPolygon, Rectangle, Point, Clip classes

Minor various optimizations

Removed unused interface

Updated Unit tests

 

Removed X-Axis label angle conversion when flipping axes, this is counter-intuitive

- Tests Description : Unit tests. X-Axis labels testing with different settings

- Files Edited:
"/org.eclipse.birt.chart.engine.extension/src/org/eclipse/birt/chart/render/DialRenderer.java"

"/org.eclipse.birt.chart.tests/src/org/eclipse/birt/chart/tests/engine/util/ClipTest.java" "/org.eclipse.birt.chart.tests/src/org/eclipse/birt/chart/tests/engine/util/ChartUtilTest.java" "/org.eclipse.birt.chart.tests/.cvsignore"

"/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/swt/SwtTextMetrics.java"

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/computations/Clip.java" "/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/ChartUtil.java" "/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/RotatedRectangle.java" "/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java" "/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWithAxes.java"

- Files Added:
"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/computations/PolySimple.java" "/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/computations/Polygon.java"

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/IPolygon.java"

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/Rectangle.java"

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/Point.java"

 

- Files Removed:

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/device/IExpressionEvaluator.java"

"/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/Clip.java"

- Notes to I18N Team:

None

 

- Notes to Build Team:

- Notes to Developers:

- Notes to QA:

- Notes to Documentation: