18 #ifndef QGSPOINTCLOUDRENDERER_H
19 #define QGSPOINTCLOUDRENDERER_H
23 #include "qgis_core.h"
58 double zValueScale,
double zValueFixedOffset,
QgsFeedback *feedback =
nullptr );
102 long pointsRendered()
const;
110 void incrementPointsRendered(
long count );
182 template <
typename T>
189 value = *( data + offset );
193 value = *
reinterpret_cast< const quint32 *
>( data + offset );
196 value = *
reinterpret_cast< const qint32 *
>( data + offset );
200 value = *
reinterpret_cast< const quint64 *
>( data + offset );
203 value = *
reinterpret_cast< const qint64 *
>( data + offset );
207 value = *
reinterpret_cast< const short *
>( data + offset );
211 value = *
reinterpret_cast< const unsigned short *
>( data + offset );
215 value = *
reinterpret_cast< const float *
>( data + offset );
219 value = *
reinterpret_cast< const double *
>( data + offset );
233 long mPointsRendered = 0;
235 int mPointRecordSize = 0;
239 double mZValueScale = 1.0;
240 double mZValueFixedOffset = 0;
302 const QString type = sipCpp->type();
304 if ( type == QLatin1String(
"rgb" ) )
305 sipType = sipType_QgsPointCloudRgbRenderer;
306 else if ( type == QLatin1String(
"ramp" ) )
307 sipType = sipType_QgsPointCloudAttributeByRampRenderer;
308 else if ( type == QLatin1String(
"classified" ) )
309 sipType = sipType_QgsPointCloudClassifiedRenderer;
310 else if ( type == QLatin1String(
"extent" ) )
311 sipType = sipType_QgsPointCloudExtentRenderer;
329 virtual QString
type()
const = 0;
364 virtual
bool willRenderPoint( const QMap<QString, QVariant> &pointAttributes )
366 Q_UNUSED( pointAttributes );
400 virtual std::unique_ptr< QgsPreparedPointCloudRendererData > prepare()
SIP_SKIP;
430 virtual
bool legendItemChecked( const QString &key );
437 virtual
void checkLegendItem( const QString &key,
bool state = true );
445 void setPointSize(
double size ) { mPointSize = size; }
531 double maximumScreenError()
const;
543 void setMaximumScreenError(
double error );
569 virtual QStringList legendRuleKeys()
const;
580 const qint32 ix = *
reinterpret_cast< const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
xOffset() );
581 const qint32 iy = *
reinterpret_cast< const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
yOffset() );
593 const qint32 iz = *
reinterpret_cast<const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
zOffset() );
602 const QPointF originalXY( x, y );
605 switch ( mPointSymbol )
608 painter->fillRect( QRectF( x - mPainterPenWidth * 0.5,
609 y - mPainterPenWidth * 0.5,
610 mPainterPenWidth, mPainterPenWidth ), color );
614 painter->setBrush( QBrush( color ) );
615 painter->setPen( Qt::NoPen );
616 painter->drawEllipse( QRectF( x - mPainterPenWidth * 0.5,
617 y - mPainterPenWidth * 0.5,
618 mPainterPenWidth, mPainterPenWidth ) );
634 void restoreCommonProperties(
const QDomElement &element,
const QgsReadWriteContext &context );
642 void saveCommonProperties( QDomElement &element,
const QgsReadWriteContext &context )
const;
651 QThread *mThread =
nullptr;
654 double mMaximumScreenError = 0.3;
657 double mPointSize = 1;
662 int mPainterPenWidth = 1;
PointCloudSymbol
Rendering symbols for point cloud points.
@ Circle
Renders points as circles.
@ Square
Renders points as squares.
PointCloudDrawOrder
Pointcloud rendering order for 2d views.
@ Default
Draw points in the order they are stored.
Base class for feedback objects to be used for cancellation of something running in a worker thread.
A geometry is the spatial representation of a feature.
Layer tree node points to a map layer.
The QgsLegendRendererItem class is abstract interface for legend items returned from QgsMapLayerLegen...
void transformInPlace(double &x, double &y) const
Transforms device coordinates to map coordinates.
Struct for storing maximum and minimum scales for measurements in map units.
Collection of point cloud attributes.
DataType
Systems of unit measurement.
@ UShort
Unsigned short int 2 bytes.
@ Short
Short int 2 bytes.
@ UChar
Unsigned char 1 byte.
@ UInt32
Unsigned int32 4 bytes.
@ UInt64
Unsigned int64 8 bytes.
Base class for storing raw data from point cloud nodes.
Represents a map layer supporting display of point clouds.
Encapsulates the render context for a 2D point cloud rendering operation.
const QgsRenderContext & renderContext() const
Returns a reference to the context's render context.
int yOffset() const
Returns the offset for the y value in a point record.
double zValueFixedOffset() const
Returns any constant offset which must be applied to z values taken from the point cloud index.
QgsVector3D offset() const
Returns the offset of the layer's int32 coordinates compared to CRS coords.
static void getAttribute(const char *data, std::size_t offset, QgsPointCloudAttribute::DataType type, T &value)
Retrieves the attribute value from data at the specified offset, where type indicates the original da...
void setOffset(const QgsVector3D &offset)
Sets the offset of the layer's int32 coordinates compared to CRS coords.
void setScale(const QgsVector3D &scale)
Sets the scale of the layer's int32 coordinates compared to CRS coords.
int pointRecordSize() const
Returns the size of a single point record.
int xOffset() const
Returns the offset for the x value in a point record.
QgsPointCloudRenderContext(const QgsPointCloudRenderContext &rh)=delete
QgsPointCloudRenderContext cannot be copied.
QgsFeedback * feedback() const
Returns the feedback object used to cancel rendering.
double zValueScale() const
Returns any constant scaling factor which must be applied to z values taken from the point cloud inde...
QgsVector3D scale() const
Returns the scale of the layer's int32 coordinates compared to CRS coords.
QgsPointCloudAttributeCollection attributes() const
Returns the attributes associated with the rendered block.
int zOffset() const
Returns the offset for the y value in a point record.
QgsPointCloudRenderContext & operator=(const QgsPointCloudRenderContext &)=delete
QgsPointCloudRenderContext cannot be copied.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
Abstract base class for 2d point cloud renderers.
virtual QDomElement save(QDomDocument &doc, const QgsReadWriteContext &context) const =0
Saves the renderer configuration to an XML element.
const QgsMapUnitScale & pointSizeMapUnitScale() const
Returns the map unit scale used for the point size.
virtual void renderBlock(const QgsPointCloudBlock *block, QgsPointCloudRenderContext &context)=0
Renders a block of point cloud data using the specified render context.
QgsPointCloudRenderer & operator=(const QgsPointCloudRenderer &other)=delete
QgsPointCloudRenderer cannot be copied – use clone() instead.
void setPointSizeUnit(const QgsUnitTypes::RenderUnit units)
Sets the units used for the point size.
void setPointSizeMapUnitScale(const QgsMapUnitScale &scale)
Sets the map unit scale used for the point size.
QgsPointCloudRenderer()=default
Constructor for QgsPointCloudRenderer.
virtual QgsPointCloudRenderer * clone() const =0
Create a deep copy of this renderer.
virtual QString type() const =0
Returns the identifier of the renderer type.
QgsPointCloudRenderer(const QgsPointCloudRenderer &other)=delete
QgsPointCloudRenderer cannot be copied – use clone() instead.
QgsUnitTypes::RenderUnit pointSizeUnit() const
Returns the units used for the point size.
virtual ~QgsPointCloudRenderer()=default
void drawPoint(double x, double y, const QColor &color, QgsPointCloudRenderContext &context) const
Draws a point using a color at the specified x and y (in map coordinates).
double pointSize() const
Returns the point size.
static double pointZ(QgsPointCloudRenderContext &context, const char *ptr, int i)
Retrieves the z value for the point at index i.
static void pointXY(QgsPointCloudRenderContext &context, const char *ptr, int i, double &x, double &y)
Retrieves the x and y coordinate for the point at index i.
Base class for 2d point cloud renderer prepared data containers.
virtual ~QgsPreparedPointCloudRendererData()
virtual QColor pointColor(const QgsPointCloudBlock *block, int i, double z)=0
An optimised method of retrieving the color of a point from a point cloud block.
virtual bool prepareBlock(const QgsPointCloudBlock *block)=0
Prepares the renderer for using the specified block.
virtual QSet< QString > usedAttributes() const =0
Returns the set of attributes used by the prepared point cloud renderer.
The class is used as a container of context for various read/write operations on other objects.
Contains information about the context of a rendering operation.
QPainter * painter()
Returns the destination QPainter for the render operation.
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
RenderUnit
Rendering size units.
@ RenderMillimeters
Millimeters.
double y() const
Returns Y coordinate.
double z() const
Returns Z coordinate.
double x() const
Returns X coordinate.
#define SIP_CONVERT_TO_SUBCLASS_CODE(code)