ArrowRenderer Class Reference

A renderer that renders flow information using arrow glyphs. More...

#include <ArrowRenderer.h>

Inheritance diagram for ArrowRenderer:

[legend]Collaboration diagram for ArrowRenderer:


Public Member Functions
	ArrowRenderer (const Data &aData)
virtual void	render (QPixmap *pixmap)
	Render data into a provided pixmap.
void	setArrowDistance (float dist)
	Sets the distance between two arrows.
void	setArrowSize (float size)
	Sets the size of an arrow in world coordinates.
void	setScaleArrowIndex (int newIndex)
	Scale arrows according to a specific data piece.
void	setScaleArrows (bool scaleArrows)
void	setScaleMax (float max)
	Sets the maximum data value.
void	setScaleMin (float min)
	Sets the minimum data value.
void	setArrowBrush (QBrush brush)
	Sets the brush for arrow drawing.
Static Public Member Functions
static void	drawArrow (QPainter &painter, const QBrush &brush, float arrowSize)
	Draws an arrow of specified size in the specified painter.
Private Member Functions
void	drawArrow (QPainter &painter, float x, float y) const
Private Attributes
float	mArrowDistance
float	mArrowSize
float	mScaleMax
float	mScaleMin
int	mScaleArrowIndex
bool	mScaleArrows
QBrush	mArrowBrush

Detailed Description

A renderer that renders flow information using arrow glyphs.

It can optionally scale the arrows according to a specific data piece.

Constructor & Destructor Documentation

ArrowRenderer::ArrowRenderer ( const Data & aData ) [inline]

Member Function Documentation

void ArrowRenderer::drawArrow ( QPainter & painter,

float x,

float y

) const [private]

void ArrowRenderer::drawArrow ( QPainter & painter,

const QBrush & brush,

float arrowSize

) [static]

Draws an arrow of specified size in the specified painter.

void ArrowRenderer::render ( QPixmap * pixmap ) [virtual]

Render data into a provided pixmap.
The size of the pixmap must be getImageSize().
Implements ARender.

void ArrowRenderer::setArrowBrush ( QBrush brush ) [inline]

Sets the brush for arrow drawing.
Defaults to solid black.

void ArrowRenderer::setArrowDistance ( float dist ) [inline]

Sets the distance between two arrows.
The distance is specified in world coordinates. This does not affect the size of an arrow, use setArrowSize() for that.

void ArrowRenderer::setArrowSize ( float size ) [inline]

Sets the size of an arrow in world coordinates.
See also setArrowDistance().

void ArrowRenderer::setScaleArrowIndex ( int newIndex ) [inline]

Scale arrows according to a specific data piece.
Scaling must be enabled via setScaleArrows().

void ArrowRenderer::setScaleArrows ( bool scaleArrows ) [inline]

void ArrowRenderer::setScaleMax ( float max ) [inline]

Sets the maximum data value.
Values larger than the one specified here will not show an arrow. Between this value and the min value, arrow sizes will be linearly interpolated.

void ArrowRenderer::setScaleMin ( float min ) [inline]

Sets the minimum data value.
Values smaller than the one specified here will not show an arrow. Between this value and the max value, arrow sizes will be linearly interpolated.