##// END OF EJS Templates
Optimize polar chart radius calculation a bit....
Optimize polar chart radius calculation a bit. Current algorithm still results in an occasional extra unneeded iteration, as it uses only crude approximation for radius reduction. However, any speedup gained by accurately calculating needed reduction would be very minor compared to approximations used, so it doesn't seem worth the effort to figure out the complex math. Change-Id: If670a1b058a85cd0305b93f62e6388b463bafd0d Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

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r2488:5862599d088d
r2542:189023d9a551
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declarativepolarchart.cpp
64 lines | 2.1 KiB | text/x-c | CppLexer
/ plugins / declarative / declarativepolarchart.cpp
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "declarativepolarchart.h"
#include "qchart.h"
QTCOMMERCIALCHART_BEGIN_NAMESPACE
/*!
\qmlclass PolarChartView DeclarativePolarChart
PolarChartView element is the parent that is responsible for showing different chart series types
in a polar chart.
Polar charts support line, spline, area, and scatter series, and all axis types
supported by those series.
\note When setting ticks to an angular ValueAxis, keep in mind that the first and last tick
are co-located at 0/360 degree angle.
\note If the angular distance between two consecutive points in a series is more than 180 degrees,
any line connecting the two points becomes meaningless, so choose the axis ranges accordingly
when displaying line, spline, or area series.
\note Polar charts do not support multiple axes of same orientation.
The following QML shows how to create a polar chart with two series:
\snippet ../demos/qmlpolarchart/qml/qmlpolarchart/view1.qml 1
\beginfloatleft
\image demos_qmlpolarchart1.png
\endfloat
\clearfloat
*/
DeclarativePolarChart::DeclarativePolarChart(QDECLARATIVE_ITEM *parent)
: DeclarativeChart(QChart::ChartTypePolar, parent)
{
}
DeclarativePolarChart::~DeclarativePolarChart()
{
}
#include "moc_declarativepolarchart.cpp"
QTCOMMERCIALCHART_END_NAMESPACE