KisIncrementalAverage Class Reference

#include <kis_incremental_average.h>

Public Member Functions
	KisIncrementalAverage (int size)
int	pushThrough (int value)

Private Attributes
int	m_index
int	m_size
int	m_sum
QVector< int >	m_values

Detailed Description

Definition at line 14 of file kis_incremental_average.h.

Constructor & Destructor Documentation

KisIncrementalAverage()

KisIncrementalAverage::KisIncrementalAverage ( int size )

inline

Definition at line 17 of file kis_incremental_average.h.

        : m_size(size),
          m_index(-1),
          m_sum(0),
          m_values(size)
    {
    }

Member Function Documentation

pushThrough()

int KisIncrementalAverage::pushThrough ( int value )

inline

Definition at line 25 of file kis_incremental_average.h.

                                      {
        if (m_index < 0) {
            for (int i = 0; i < m_size; i++) {
                m_values[i] = value;
            }
            m_index = 0;
            m_sum = 3 * value;
            return value;
        }
 
        int oldValue = m_values[m_index];
        m_values[m_index] = value;
 
        m_sum += value - oldValue;
 
        if (++m_index >= m_size) {
            m_index = 0;
        }
 
        return m_sum / m_size;
    }

References m_index, m_size, m_sum, m_values, and value().

Member Data Documentation

m_index

int KisIncrementalAverage::m_index

private

Definition at line 49 of file kis_incremental_average.h.

m_size

int KisIncrementalAverage::m_size

private

Definition at line 48 of file kis_incremental_average.h.

m_sum

int KisIncrementalAverage::m_sum

private

Definition at line 50 of file kis_incremental_average.h.

m_values

QVector<int> KisIncrementalAverage::m_values

private

Definition at line 51 of file kis_incremental_average.h.

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The documentation for this class was generated from the following file:

• libs/ui/input/wintab/kis_incremental_average.h