Pure rendering window for 3D plots. More...

#include <qwt3d_plot.h>

Inheritance diagram for Qwt3DPlot:

Classes
class	PrivateData

Public Slots
void	setRotation (double xVal, double yVal, double zVal)

void	setShift (double xVal, double yVal, double zVal)

void	setViewportShift (double xVal, double yVal)

void	setScale (double xVal, double yVal, double zVal)

void	setZoom (double)

void	setOrtho (bool)
	Sets up orthogonal or perspective mode and updates widget.

void	setAspectRatioMode (ASPECTRATIOMODE mode)
	Sets the aspect ratio mode for the 3D coordinate box.

void	enableMouse (bool val=true)

void	disableMouse (bool val=true)

void	enableKeyboard (bool val=true)

void	disableKeyboard (bool val=true)

void	enableLighting (bool val=true)
	Enable or disable lighting.

void	disableLighting (bool val=true)

void	setLightRotation (double xVal, double yVal, double zVal, unsigned int idx=0)
	Set the rotation angle of the light source.

void	setLightShift (double xVal, double yVal, double zVal, unsigned int idx=0)
	Set the shift in light source (world) coordinates.

virtual bool	savePixmap (QString const &fileName, QString const &format)
	Saves the framebuffer to an image file.

virtual bool	saveVector (QString const &fileName, QString const &format, Qwt3DVectorWriter::TEXTMODE text, Qwt3DVectorWriter::SORTMODE sortmode)
	Writes vector data supported by gl2ps.

virtual bool	save (QString const &fileName, QString const &format)
	Saves content in one of the registered output formats.

Signals
void	rotationChanged (double xAngle, double yAngle, double zAngle)
	Signal emitted when the rotation is changed.

void	shiftChanged (double xShift, double yShift, double zShift)
	Signal emitted when the shift is changed.

void	vieportShiftChanged (double xShift, double yShift)
	Signal emitted when the viewport shift is changed.

void	scaleChanged (double xScale, double yScale, double zScale)
	Signal emitted when the scaling is changed.

void	zoomChanged (double)
	Signal emitted when the zoom is changed.

void	projectionChanged (bool)
	Signal emitted when the projection mode is changed.

void	aspectRatioModeChanged (ASPECTRATIOMODE mode)
	Signal emitted when the aspect ratio mode is changed.

Public Member Functions
	Qwt3DPlot (QWidget *parent=nullptr)
	Constructs a Qwt3DPlot widget.

QPixmap	renderPixmap (int w=0, int h=0, bool useContext=false)
	Renders the plot to a pixmap.

void	createCoordinateSystem (Triple beg, Triple end)
	Creates a coordinate system with generating corners beg and end.

Qwt3DCoordinateSystem *	coordinates ()

Qwt3DColorLegend *	legend ()

double	xRotation () const

double	yRotation () const

double	zRotation () const

double	xShift () const

double	yShift () const

double	zShift () const

double	xViewportShift () const

double	yViewportShift () const

double	xScale () const

double	yScale () const

double	zScale () const

double	zoom () const

bool	ortho () const

ASPECTRATIOMODE	aspectRatioMode () const

void	setBackgroundColor (RGBA rgba)
	Sets the background color.

RGBA	backgroundRGBAColor () const

ParallelEpiped	hull () const

void	showColorLegend (bool)
	Shows or hides the color legend.

bool	isColorLegendShown () const
	返回颜色图例是否显示

void	setLegendPosition (Qwt3DColorLegend::Position pos)

void	setLegendAbsolutePosition (const QRectF &pixelRect)

void	setTitlePosition (double rely, double relx=0.5, ANCHOR=TopCenter)
	Sets relative caption position.

void	setTitleFont (const QString &family, int pointSize, int weight=QFont::Normal, bool italic=false)
	Sets the caption font.

void	setTitleColor (RGBA col)

void	setTitle (const QString &title)

QString	title () const
	返回标题文本

void	setTheme (const Qwt3DTheme &theme)

Qwt3DTheme	theme () const

void	applyTheme (Qwt3DTheme::Preset preset)

void	applyTheme (const QString &presetName)

void	assignMouse (Qwt3DMouseState xrot, Qwt3DMouseState yrot, Qwt3DMouseState zrot, Qwt3DMouseState xscale, Qwt3DMouseState yscale, Qwt3DMouseState zscale, Qwt3DMouseState zoom, Qwt3DMouseState xshift, Qwt3DMouseState yshift)

bool	mouseEnabled () const

void	assignKeyboard (Qwt3DKeyboardState xrot_n, Qwt3DKeyboardState xrot_p, Qwt3DKeyboardState yrot_n, Qwt3DKeyboardState yrot_p, Qwt3DKeyboardState zrot_n, Qwt3DKeyboardState zrot_p, Qwt3DKeyboardState xscale_n, Qwt3DKeyboardState xscale_p, Qwt3DKeyboardState yscale_n, Qwt3DKeyboardState yscale_p, Qwt3DKeyboardState zscale_n, Qwt3DKeyboardState zscale_p, Qwt3DKeyboardState zoom_n, Qwt3DKeyboardState zoom_p, Qwt3DKeyboardState xshift_n, Qwt3DKeyboardState xshift_p, Qwt3DKeyboardState yshift_n, Qwt3DKeyboardState yshift_p)

bool	keyboardEnabled () const

void	setKeySpeed (double rot, double scale, double shift)

void	keySpeed (double &rot, double &scale, double &shift) const

bool	lightingEnabled () const

void	illuminate (unsigned light=0)

void	blowout (unsigned light=0)

void	setMaterialComponent (unsigned int property, double r, double g, double b, double a=1.0)
	Sets material component (RGBA)

void	setMaterialComponent (unsigned int property, double intensity)
	Sets material component (intensity)

void	setShininess (double exponent)
	Sets shininess exponent.

void	setLightComponent (unsigned int property, double r, double g, double b, double a=1.0, unsigned light=0)
	Sets light component (RGBA)

void	setLightComponent (unsigned int property, double intensity, unsigned light=0)
	Sets light component (intensity)

double	xLightRotation (unsigned idx=0) const

double	yLightRotation (unsigned idx=0) const

double	zLightRotation (unsigned idx=0) const

double	xLightShift (unsigned idx=0) const

double	yLightShift (unsigned idx=0) const

double	zLightShift (unsigned idx=0) const

bool	hasItems () const

virtual void	attach (Qwt3DPlotItem *item)
	Attach a plot item to this plot.

virtual void	detach (Qwt3DPlotItem *item)
	Detach a plot item from this plot.

const QList< Qwt3DPlotItem * > &	itemList () const
	Returns the list of attached items (sorted by z-order)

void	itemChanged (Qwt3DPlotItem *item)
	Called by Qwt3DPlotItem when its data or properties change.

bool	initializedGL () const

QMatrix4x4	modelViewMatrix () const
	Returns the current model-view matrix.

QMatrix4x4	projectionMatrix () const
	Returns the current projection matrix.

QPointF	worldToScreen (const Triple &world) const
	Converts a world coordinate to screen (viewport) coordinates.

Triple	screenToWorld (const QPointF &screen) const
	Converts screen (viewport) coordinates to a world coordinate.

QSize	viewportSize () const
	Returns the viewport size in pixels.

QOpenGLShaderProgram *	lineShader () const
	Returns the shared line shader program.

QOpenGLShaderProgram *	pointShader () const
	Returns the shared point shader program.

QOpenGLShaderProgram *	polygonShader () const
	Returns the shared polygon shader program.

QOpenGLShaderProgram *	textShader () const
	Returns the shared text shader program.

Protected Member Functions
void	initializeGL () override
	Sets up the OpenGL rendering state.

void	paintGL () override
	Paints the widget's content.

void	resizeGL (int w, int h) override
	Sets up the OpenGL view port.

void	mousePressEvent (QMouseEvent *e) override

void	mouseReleaseEvent (QMouseEvent *e) override

void	mouseMoveEvent (QMouseEvent *e) override

void	wheelEvent (QWheelEvent *e) override

void	keyPressEvent (QKeyEvent *e) override

Detailed Description

Pure rendering window for 3D plots.

Qwt3DPlot is the central rendering window (a QOpenGLWidget subclass). It manages GL context, view transformation, lighting, coordinate system, legend, title, and mouse/keyboard interaction. It does NOT hold any plotting data — data is managed by Qwt3DPlotItem subclasses that are attached via attach().

The rendering pipeline in paintGL():

Clear color + depth buffer
Calculate view/projection matrices on CPU (QMatrix4x4)
For each attached item (sorted by z): item->draw()
Draw coordinate system (legacy GL temporarily)
Draw legend and title

auto plot = new Qwt3DPlot(parent);
auto item = new MySurfaceItem();
item->attach(plot);

Constructor & Destructor Documentation

◆ Qwt3DPlot()

Qwt3DPlot::Qwt3DPlot ( QWidget * parent = nullptr )

Constructs a Qwt3DPlot widget.

Parameters

parent Parent widget

Destructor

Member Function Documentation

◆ aspectRatioModeChanged

void Qwt3DPlot::aspectRatioModeChanged ( ASPECTRATIOMODE mode )

signal

Signal emitted when the aspect ratio mode is changed.

Parameters

mode	The new aspect ratio mode (AUTOFILL or DATARATIO)

◆ assignKeyboard()

void Qwt3DPlot::assignKeyboard	(	Qwt3DKeyboardState	xrot_n,
		Qwt3DKeyboardState	xrot_p,
		Qwt3DKeyboardState	yrot_n,
		Qwt3DKeyboardState	yrot_p,
		Qwt3DKeyboardState	zrot_n,
		Qwt3DKeyboardState	zrot_p,
		Qwt3DKeyboardState	xscale_n,
		Qwt3DKeyboardState	xscale_p,
		Qwt3DKeyboardState	yscale_n,
		Qwt3DKeyboardState	yscale_p,
		Qwt3DKeyboardState	zscale_n,
		Qwt3DKeyboardState	zscale_p,
		Qwt3DKeyboardState	zoom_n,
		Qwt3DKeyboardState	zoom_p,
		Qwt3DKeyboardState	xshift_n,
		Qwt3DKeyboardState	xshift_p,
		Qwt3DKeyboardState	yshift_n,
		Qwt3DKeyboardState	yshift_p
	)

Sets the keybutton combination for data/coordinatesystem moves inside the widget

default behaviour:

rotate around x axis: [Key_Down, Key_Up]
rotate around y axis: SHIFT+[Key_Right, Key_Left]
rotate around z axis: [Key_Right, Key_Left]
scale x:              ALT+[Key_Right, Key_Left]
scale y:              ALT+[Key_Up, Key_Down]
scale z:              ALT+SHIFT[Key_Down, Key_Up]
zoom:                 ALT+CTRL+[Key_Down, Key_Up]
shifting along x:     CTRL+[Key_Right, Key_Left]
shifting along z:     CTRL+[Key_Down, Key_Up]

◆ assignMouse()

void Qwt3DPlot::assignMouse	(	Qwt3DMouseState	xrot,
		Qwt3DMouseState	yrot,
		Qwt3DMouseState	zrot,
		Qwt3DMouseState	xscale,
		Qwt3DMouseState	yscale,
		Qwt3DMouseState	zscale,
		Qwt3DMouseState	zoom,
		Qwt3DMouseState	xshift,
		Qwt3DMouseState	yshift
	)

 Sets the key/mousebutton combination for data/coordinatesystem moves inside the widget\n\n
 default behaviour:\n

 @verbatim
 rotate around x axis: Qt::LeftButton
 rotate around y axis: Qt::LeftButton | Qt::ShiftButton
 rotate around z axis: Qt::LeftButton
 scale x:              Qt::LeftButton | Qt::AltButton
 scale y:              Qt::LeftButton | Qt::AltButton
 scale z:              Qt::LeftButton | Qt::AltButton | Qt::ShiftButton
 zoom:                 Qt::LeftButton | Qt::AltButton | Qt::ControlButton
 shifting along x:     Qt::LeftButton | Qt::ControlButton
 shifting along y:     Qt::LeftButton | Qt::ControlButton
 @endverbatim

 mouseMoveEvent() evaluates this function - if overridden, their usefulness becomes somehow

limited

◆ attach()

void Qwt3DPlot::attach ( Qwt3DPlotItem * item )

virtual

Attach a plot item to this plot.

Parameters

item	Pointer to the item to attach

Inserts the item into the internal list and sorts by z-order. If the item is already attached, it is not duplicated.

◆ blowout()

void Qwt3DPlot::blowout ( unsigned light = 0 )

Parameters

light light number [0..7]

See also: setLight

◆ createCoordinateSystem()

void Qwt3DPlot::createCoordinateSystem	(	Triple	beg,
		Triple	end
	)

Creates a coordinate system with generating corners beg and end.

Parameters

beg	Minimum vertex of the coordinate system
end	Maximum vertex of the coordinate system

◆ detach()

void Qwt3DPlot::detach ( Qwt3DPlotItem * item )

virtual

Detach a plot item from this plot.

Parameters

item	Pointer to the item to detach

Removes the item from the internal list. Does not delete the item.

◆ disableKeyboard

void Qwt3DPlot::disableKeyboard ( bool val = true )

slot

See also: enableKeyboard()

◆ disableMouse

void Qwt3DPlot::disableMouse ( bool val = true )

slot

See also: enableMouse()

◆ enableKeyboard

void Qwt3DPlot::enableKeyboard ( bool val = true )

slot

The function has no effect if you derive from Qwt3DPlot and overrides the keyboard Functions too careless. In this case check first against keyboardEnabled() in your version of keyPressEvent() A more fine grained input control can be achieved by combining assignKeyboard() with enableKeyboard().

◆ enableLighting

void Qwt3DPlot::enableLighting ( bool val = true )

slot

Enable or disable lighting.

Parameters

val	True to enable, false to disable

Lighting parameters are stored on CPU only. No GL_LIGHTING glEnable/glDisable calls are made. Shader-based lighting will use these stored parameters as uniform values.

◆ enableMouse

void Qwt3DPlot::enableMouse ( bool val = true )

slot

The function has no effect if you derive from Qwt3DPlot and overrides the mouse Function too careless. In this case check first against mouseEnabled() in your version of mouseMoveEvent() and wheelEvent(). A more fine grained input control can be achieved by combining assignMouse() with enableMouse().

◆ illuminate()

void Qwt3DPlot::illuminate ( unsigned light = 0 )

Parameters

light light number [0..7]

See also: setLight

◆ initializeGL()

void Qwt3DPlot::initializeGL ( )

overrideprotected

Sets up the OpenGL rendering state.

Compiles shared GLSL shaders (line, point, polygon, text) for use by drawables and items. Enables blend and depth test.

◆ isColorLegendShown()

bool Qwt3DPlot::isColorLegendShown ( ) const

返回颜色图例是否显示

Returns: true 如果颜色图例已显示

返回 d->m_displayLegend。showColorLegend(bool) 通过 d->m_displayLegend = show 设置，此处返回该值。

◆ itemChanged()

void Qwt3DPlot::itemChanged ( Qwt3DPlotItem * item )

Called by Qwt3DPlotItem when its data or properties change.

Parameters

item	The item that changed

Re-sorts the item list by z-order, recalculates the plot hull as the union of all items' hulls, updates the coordinate system, and triggers a repaint.

◆ modelViewMatrix()

QMatrix4x4 Qwt3DPlot::modelViewMatrix ( ) const

Returns the current model-view matrix.

Returns: The model-view matrix computed during the last paintGL() call

Items use this matrix in their shader uniforms to transform vertex positions from model space to view space.

◆ mouseMoveEvent()

void Qwt3DPlot::mouseMoveEvent ( QMouseEvent * e )

overrideprotected

Standard mouse button Function

See also: assignMouse()

◆ mousePressEvent()

void Qwt3DPlot::mousePressEvent ( QMouseEvent * e )

overrideprotected

Standard mouse button Function. Prepares the call to mouseMoveEvent

See also: mouseMoveEvent()

◆ mouseReleaseEvent()

void Qwt3DPlot::mouseReleaseEvent ( QMouseEvent * e )

overrideprotected

Standard mouse button Function. Completes the call to mouseMoveEvent

See also: mouseMoveEvent()

◆ paintGL()

void Qwt3DPlot::paintGL ( )

overrideprotected

Paints the widget's content.

Uses CPU-side QMatrix4x4 for view/projection calculation. All rendering uses VBO/VAO + GLSL shaders.

◆ projectionChanged

void Qwt3DPlot::projectionChanged ( bool )

signal

Signal emitted when the projection mode is changed.

Parameters

ortho True for orthogonal, false for perspective

◆ projectionMatrix()

QMatrix4x4 Qwt3DPlot::projectionMatrix ( ) const

Returns the current projection matrix.

Returns: The projection matrix computed during the last paintGL() call

Items use this matrix in their shader uniforms to transform vertex positions from view space to clip space.

◆ renderPixmap()

QPixmap Qwt3DPlot::renderPixmap	(	int	w = `0`,
		int	h = `0`,
		bool	useContext = `false`
	)

Renders the plot to a pixmap.

Parameters

w	Width (0 for default)
h	Height (0 for default)
useContext	Whether to use existing GL context

Returns: QPixmap of the rendered scene

◆ resizeGL()

void Qwt3DPlot::resizeGL	(	int	w,
		int	h
	)

overrideprotected

Sets up the OpenGL view port.

Parameters

w	New width
h	New height

◆ rotationChanged

void Qwt3DPlot::rotationChanged	(	double	xAngle,
		double	yAngle,
		double	zAngle
	)

signal

Signal emitted when the rotation is changed.

Parameters

xAngle	X axis rotation angle
yAngle	Y axis rotation angle
zAngle	Z axis rotation angle

◆ save

bool Qwt3DPlot::save	(	QString const &	fileName,
		QString const &	format
	)

virtualslot

Saves content in one of the registered output formats.

Parameters

fileName	Output file name
format	Output format string

Returns: True on success

To modify the behaviour for more complex output handling use Qwt3DIO::outputHandler.

◆ savePixmap

bool Qwt3DPlot::savePixmap	(	QString const &	fileName,
		QString const &	format
	)

virtualslot

Saves the framebuffer to an image file.

Parameters

fileName	Output file name
format	Image file format supported by Qt

Returns: True on success

Deprecated:: Use Qwt3DPlot::save or Qwt3DIO::save instead.

◆ saveVector

bool Qwt3DPlot::saveVector	(	QString const &	fileName,
		QString const &	format,
		Qwt3DVectorWriter::TEXTMODE	text,
		Qwt3DVectorWriter::SORTMODE	sortmode
	)

virtualslot

Writes vector data supported by gl2ps.

Parameters

fileName	Output file name
format	Output format ("EPS", "PS", "PDF", "SVG", or "PGF")
text	Text handling mode
sortmode	Sort mode for polygon ordering

Returns: True on success

Deprecated:: Use Qwt3DPlot::save or Qwt3DIO::save instead.

If zlib has been configured, format types will be extended by "EPS_GZ" and "PS_GZ". Beware: BSPSORT turns out to behave very slowly and memory consuming, especially in cases where many polygons appear. It is still more exact than SIMPLESORT.

◆ scaleChanged

void Qwt3DPlot::scaleChanged	(	double	xScale,
		double	yScale,
		double	zScale
	)

signal

Signal emitted when the scaling is changed.

Parameters

xScale	X axis scale factor
yScale	Y axis scale factor
zScale	Z axis scale factor

◆ screenToWorld()

Triple Qwt3DPlot::screenToWorld ( const QPointF & screen ) const

Converts screen (viewport) coordinates to a world coordinate.

Parameters

screen Screen-space point (pixel coordinates)

Returns: World-space Triple

Uses the inverse of the CPU-side modelView and projection matrices to unproject screen coordinates. The z-component is determined by the near plane (z=0 in NDC). Replaces the legacy gluUnProject call.

◆ setAspectRatioMode

void Qwt3DPlot::setAspectRatioMode ( ASPECTRATIOMODE mode )

slot

Sets the aspect ratio mode for the 3D coordinate box.

Parameters

mode	AUTOFILL to independently scale each axis to fill the viewport, DATARATIO to preserve original data proportions

In AUTOFILL mode (default), each axis is normalized to the same visual length so the coordinate box appears as a cube, making the plot fill the viewport. In DATARATIO mode, the original data proportions are preserved (equal aspect ratio), similar to matplotlib's plt.axis('equal').

◆ setBackgroundColor()

void Qwt3DPlot::setBackgroundColor ( RGBA rgba )

Sets the background color.

Parameters

rgba	Background color as RGBA value

◆ setKeySpeed()

void Qwt3DPlot::setKeySpeed	(	double	rot,
		double	scale,
		double	shift
	)

Values < 0 are ignored. Default is (3,5,5)

◆ setLightComponent() [1/2]

void Qwt3DPlot::setLightComponent	(	unsigned int	property,
		double	intensity,
		unsigned	light = `0`
	)

Sets light component (intensity)

Convenience function: sets r=g=b=intensity, a=1.0

◆ setLightComponent() [2/2]

void Qwt3DPlot::setLightComponent	(	unsigned int	property,
		double	r,
		double	g,
		double	b,
		double	a = `1.0`,
		unsigned	light = `0`
	)

Sets light component (RGBA)

Parameters are stored on CPU for future shader uniform upload. No glLightfv calls are made.

◆ setLightRotation

void Qwt3DPlot::setLightRotation	(	double	xVal,
		double	yVal,
		double	zVal,
		unsigned int	idx = `0`
	)

slot

Set the rotation angle of the light source.

Parameters

xVal	angle in degree to rotate around the X axis
yVal	angle in degree to rotate around the Y axis
zVal	angle in degree to rotate around the Z axis
light	light number

◆ setLightShift

void Qwt3DPlot::setLightShift	(	double	xVal,
		double	yVal,
		double	zVal,
		unsigned int	idx = `0`
	)

slot

Set the shift in light source (world) coordinates.

Parameters

xVal	shift along (world) X axis
yVal	shift along (world) Y axis
zVal	shift along (world) Z axis
light	light number

◆ setMaterialComponent() [1/2]

void Qwt3DPlot::setMaterialComponent	(	unsigned int	property,
		double	intensity
	)

Sets material component (intensity)

Convenience function: sets r=g=b=intensity, a=1.0

◆ setMaterialComponent() [2/2]

void Qwt3DPlot::setMaterialComponent	(	unsigned int	property,
		double	r,
		double	g,
		double	b,
		double	a = `1.0`
	)

Sets material component (RGBA)

Parameters are stored on CPU for future shader uniform upload. No glMaterialfv calls are made.

◆ setOrtho

void Qwt3DPlot::setOrtho ( bool val )

slot

Sets up orthogonal or perspective mode and updates widget.

Parameters

val	True for orthogonal projection, false for perspective

◆ setRotation

void Qwt3DPlot::setRotation	(	double	xVal,
		double	yVal,
		double	zVal
	)

slot

Set the rotation angle of the object. If you look along the respective axis towards ascending values, the rotation is performed in mathematical negative sense

Parameters

xVal	angle in degree to rotate around the X axis
yVal	angle in degree to rotate around the Y axis
zVal	angle in degree to rotate around the Z axis

◆ setScale

void Qwt3DPlot::setScale	(	double	xVal,
		double	yVal,
		double	zVal
	)

slot

Set the scale in object (world) coordinates.

Parameters

xVal	scaling for X values
yVal	scaling for Y values
zVal	scaling for Z values

A respective value of 1 represents no scaling;

◆ setShift

void Qwt3DPlot::setShift	(	double	xVal,
		double	yVal,
		double	zVal
	)

slot

Set the shift in object (world) coordinates.

Parameters

xVal	shift along (world) X axis
yVal	shift along (world) Y axis
zVal	shift along (world) Z axis

See also: setViewportShift()

◆ setShininess()

void Qwt3DPlot::setShininess ( double exponent )

Sets shininess exponent.

Parameter is stored on CPU for future shader uniform upload. No glMaterialf calls are made.

◆ setTitleFont()

void Qwt3DPlot::setTitleFont	(	const QString &	family,
		int	pointSize,
		int	weight = `QFont::Normal`,
		bool	italic = `false`
	)

Sets the caption font.

Parameters

family	Font family name
pointSize	Font point size
weight	Font weight
italic	Whether font is italic

◆ setTitlePosition()

void Qwt3DPlot::setTitlePosition	(	double	rely,
		double	relx = `0.5`,
		ANCHOR	anchor = `TopCenter`
	)

Sets relative caption position.

Parameters

rely	Relative Y position (0-1). (0.5,0.5) means the anchor point lies in the center of the screen.
relx	Relative X position (0-1)
anchor	Anchor type for title alignment

◆ setViewportShift

void Qwt3DPlot::setViewportShift	(	double	xVal,
		double	yVal
	)

slot

Performs shifting along screen axes. The shift moves points inside a sphere, which encloses the unscaled and unzoomed data by multiples of the spheres diameter

Parameters

xVal	shift along (view) X axis
yVal	shift along (view) Y axis

See also: setShift()

◆ setZoom

void Qwt3DPlot::setZoom ( double val )

slot

Set the (zoom in addition to scale).

Parameters

val	zoom value (value == 1 indicates no zooming)

◆ shiftChanged

void Qwt3DPlot::shiftChanged	(	double	xShift,
		double	yShift,
		double	zShift
	)

signal

Signal emitted when the shift is changed.

Parameters

xShift	X axis shift value
yShift	Y axis shift value
zShift	Z axis shift value

◆ showColorLegend()

void Qwt3DPlot::showColorLegend ( bool show )

Shows or hides the color legend.

Parameters

show	True to show, false to hide

The color legend colors are populated from attached items' dataColor functors during paintGL.

◆ title()

QString Qwt3DPlot::title ( ) const

返回标题文本

Returns: 标题字符串

委托到内部 Qwt3DLabel 的 string() getter。 setTitle() 通过 d->m_title.setString(title) 设置，此处返回 d->m_title.string()。

◆ vieportShiftChanged

void Qwt3DPlot::vieportShiftChanged	(	double	xShift,
		double	yShift
	)

signal

Signal emitted when the viewport shift is changed.

Parameters

xShift	X viewport shift value
yShift	Y viewport shift value

◆ wheelEvent()

void Qwt3DPlot::wheelEvent ( QWheelEvent * e )

overrideprotected

Standard wheel Function - zoom (wheel only) or z-scale (shift+wheel)

◆ worldToScreen()

QPointF Qwt3DPlot::worldToScreen ( const Triple & world ) const

Converts a world coordinate to screen (viewport) coordinates.

Parameters

world World-space triple

Returns: Screen-space QPointF (pixel coordinates)

Uses the CPU-side modelView and projection matrices to transform world coordinates to normalized device coordinates, then maps to viewport pixels. Replaces the legacy gluProject call.

◆ zoomChanged

void Qwt3DPlot::zoomChanged ( double )

signal

Signal emitted when the zoom is changed.

Parameters

zoom	Zoom factor

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

/home/runner/work/QWT/QWT/src/plot3d/qwt3d_plot.h
/home/runner/work/QWT/QWT/src/plot3d/qwt3d_io.cpp
/home/runner/work/QWT/QWT/src/plot3d/qwt3d_lighting.cpp
/home/runner/work/QWT/QWT/src/plot3d/qwt3d_mousekeyboard.cpp
/home/runner/work/QWT/QWT/src/plot3d/qwt3d_movements.cpp
/home/runner/work/QWT/QWT/src/plot3d/qwt3d_plot.cpp

Classes

Public Slots

Signals

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Qwt3DPlot()

Member Function Documentation

◆ aspectRatioModeChanged

◆ assignKeyboard()

◆ assignMouse()

◆ attach()

◆ blowout()

◆ createCoordinateSystem()

◆ detach()

◆ disableKeyboard

◆ disableMouse

◆ enableKeyboard

◆ enableLighting

◆ enableMouse

◆ illuminate()

◆ initializeGL()

◆ isColorLegendShown()

◆ itemChanged()

◆ modelViewMatrix()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ paintGL()

◆ projectionChanged

◆ projectionMatrix()

◆ renderPixmap()

◆ resizeGL()

◆ rotationChanged

◆ save

◆ savePixmap

◆ saveVector

◆ scaleChanged

◆ screenToWorld()

◆ setAspectRatioMode

◆ setBackgroundColor()

◆ setKeySpeed()

◆ setLightComponent() [1/2]

◆ setLightComponent() [2/2]

◆ setLightRotation

◆ setLightShift

◆ setMaterialComponent() [1/2]

◆ setMaterialComponent() [2/2]

◆ setOrtho

◆ setRotation

◆ setScale

◆ setShift

◆ setShininess()

◆ setTitleFont()

◆ setTitlePosition()

◆ setViewportShift

◆ setZoom

◆ shiftChanged

◆ showColorLegend()

◆ title()

◆ vieportShiftChanged

◆ wheelEvent()

◆ worldToScreen()

◆ zoomChanged