18#ifndef QGSPOINTCLOUDRENDERER_H
19#define QGSPOINTCLOUDRENDERER_H
59 double zValueScale,
double zValueFixedOffset,
QgsFeedback *feedback =
nullptr );
100 long pointsRendered()
const;
108 void incrementPointsRendered(
long count );
180 template <
typename T>
186 value = *
reinterpret_cast< const unsigned char *
>( data + offset );
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 );
255 long mPointsRendered = 0;
257 int mPointRecordSize = 0;
261 double mZValueScale = 1.0;
262 double mZValueFixedOffset = 0;
266 TriangulationData mTriangulationData;
326 const QString type = sipCpp->
type();
328 if ( type == QLatin1String(
"rgb" ) )
329 sipType = sipType_QgsPointCloudRgbRenderer;
330 else if ( type == QLatin1String(
"ramp" ) )
331 sipType = sipType_QgsPointCloudAttributeByRampRenderer;
332 else if ( type == QLatin1String(
"classified" ) )
333 sipType = sipType_QgsPointCloudClassifiedRenderer;
334 else if ( type == QLatin1String(
"extent" ) )
335 sipType = sipType_QgsPointCloudExtentRenderer;
350 virtual QString
type()
const = 0;
385 virtual
bool willRenderPoint( const QMap<QString, QVariant> &pointAttributes )
387 Q_UNUSED( pointAttributes );
421 virtual std::unique_ptr< QgsPreparedPointCloudRendererData > prepare()
SIP_SKIP;
451 virtual
bool legendItemChecked( const QString &key );
458 virtual
void checkLegendItem( const QString &key,
bool state = true );
466 void setPointSize(
double size ) { mPointSize = size; }
552 double maximumScreenError()
const;
564 void setMaximumScreenError(
double error );
676 virtual QStringList legendRuleKeys()
const;
687 const qint32 ix = *
reinterpret_cast< const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
xOffset() );
688 const qint32 iy = *
reinterpret_cast< const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
yOffset() );
700 const qint32 iz = *
reinterpret_cast<const qint32 *
>( ptr + i * context.
pointRecordSize() + context.
zOffset() );
709 drawPoint( x, y, color, mDefaultPainterPenWidth, context );
719 const QPointF originalXY( x, y );
722 switch ( mPointSymbol )
725 painter->fillRect( QRectF( x - width * 0.5,
727 width, width ), color );
731 painter->setBrush( QBrush( color ) );
732 painter->setPen( Qt::NoPen );
733 painter->drawEllipse( QRectF( x - width * 0.5,
763 triangulation.
points.push_back( p.
x() );
764 triangulation.
points.push_back( p.
y() );
765 triangulation.
colors.push_back( color.rgb() );
767 triangulation.
elevations.push_back(
static_cast<float>( z ) );
781 void restoreCommonProperties(
const QDomElement &element,
const QgsReadWriteContext &context );
789 void saveCommonProperties( QDomElement &element,
const QgsReadWriteContext &context )
const;
798 QThread *mThread =
nullptr;
801 double mMaximumScreenError = 0.3;
804 double mPointSize = 1;
809 int mDefaultPainterPenWidth = 1;
812 bool mRenderAsTriangles =
false;
813 bool mHorizontalTriangleFilter =
false;
814 double mHorizontalTriangleFilterThreshold = 5.0;
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.
RenderUnit
Rendering size units.
@ Millimeters
Millimeters.
Stores digital elevation model in a raster image which may get updated as a part of map layer renderi...
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...
QgsPointXY transform(const QgsPointXY &p) const
Transforms a point p from map (world) coordinates to device coordinates.
void transformInPlace(double &x, double &y) const
Transforms map coordinates to device 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.
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.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
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.
const QgsRenderContext & renderContext() const
Returns a reference to the context's render context.
QgsPointCloudRenderContext & operator=(const QgsPointCloudRenderContext &)=delete
QgsPointCloudRenderContext(const QgsPointCloudRenderContext &rh)=delete
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.
TriangulationData & triangulationData()
Returns reference to the triangulation data structure (only used when rendering as triangles is enabl...
int zOffset() const
Returns the offset for the y value in a point record.
QgsFeedback * feedback() const
Returns the feedback object used to cancel rendering.
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.
bool renderAsTriangles() const
Returns whether points are triangulated to render solid surface.
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.
const QgsMapUnitScale & pointSizeMapUnitScale() const
Returns the map unit scale used for the point size.
void setPointSizeMapUnitScale(const QgsMapUnitScale &scale)
Sets the map unit scale used for the point size.
QgsPointCloudRenderer()=default
bool horizontalTriangleFilter() const
Returns whether large triangles will get rendered.
virtual QString type() const =0
Returns the identifier of the renderer type.
void setHorizontalTriangleFilterThreshold(double threshold)
Sets threshold for filtering of triangles.
void setHorizontalTriangleFilterUnit(Qgis::RenderUnit unit)
Sets units of the threshold for filtering of triangles.
QgsPointCloudRenderer(const QgsPointCloudRenderer &other)=delete
QgsPointCloudRenderer cannot be copied – use clone() instead.
virtual QgsPointCloudRenderer * clone() const =0
Create a deep copy of this renderer.
void addPointToTriangulation(double x, double y, double z, const QColor &color, QgsPointCloudRenderContext &context)
Adds a point to the list of points to be triangulated (only used when renderAsTriangles() is enabled)
void setPointSizeUnit(const Qgis::RenderUnit units)
Sets the units used for the point size.
Qgis::RenderUnit horizontalTriangleFilterUnit() const
Returns units of the threshold for filtering of triangles.
void setRenderAsTriangles(bool asTriangles)
Sets whether points are triangulated to render solid surface.
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).
void drawPoint(double x, double y, const QColor &color, int width, QgsPointCloudRenderContext &context) const
Draws a point using a color and painter width at the specified x and y (in map coordinates).
Qgis::RenderUnit pointSizeUnit() const
Returns the units used for the point size.
double horizontalTriangleFilterThreshold() const
Returns threshold for filtering of triangles.
void setHorizontalTriangleFilter(bool enabled)
Sets whether large triangles will get rendered.
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.
A class to represent a 2D point.
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.
QgsElevationMap * elevationMap() const
Returns the destination elevation map for the render operation.
float devicePixelRatio() const
Returns the device pixel ratio.
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
Class for storage of 3D vectors similar to QVector3D, with the difference that it uses double precisi...
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)
Helper data structure used when rendering points as triangulated surface.
std::vector< QRgb > colors
RGB color for each point.
std::vector< float > elevations
Z value for each point (only used when global map shading is enabled)
std::vector< double > points
X,Y for each point - kept in this structure so that we can use it without further conversions in Dela...