29 , mPointSize( pointSize )
49 : mAttribute( attributeName )
50 , mCategories( categories )
56 return QStringLiteral(
"classified" );
61 std::unique_ptr< QgsPointCloudClassifiedRenderer > res = std::make_unique< QgsPointCloudClassifiedRenderer >();
62 res->mAttribute = mAttribute;
63 res->mCategories = mCategories;
77 visibleExtent.
grow( std::max( visibleExtent.
width(), visibleExtent.
height() ) * 0.05 );
80 const char *ptr = block->
data();
85 int attributeOffset = 0;
93 const bool considerZ = !zRange.
isInfinite() || renderElevation;
100 const bool reproject = ct.
isValid();
102 QHash< int, QColor > colors;
103 QHash< int, int > pointSizes;
106 if ( !category.renderState() )
109 colors.insert( category.value(), category.color() );
111 const double size = category.pointSize() > 0 ? category.pointSize() :
pointSize();
115 for (
int i = 0; i < count; ++i )
125 z =
pointZ( context, ptr, i );
130 int attributeValue = 0;
131 context.
getAttribute( ptr, i * recordSize + attributeOffset, attributeType, attributeValue );
132 const QColor color = colors.value( attributeValue );
133 if ( !color.isValid() )
136 pointXY( context, ptr, i, x, y );
137 if ( visibleExtent.
contains( x, y ) )
160 const double size = pointSizes.value( attributeValue );
162 if ( renderElevation )
173 if ( !pointAttributes.contains( mAttribute ) )
175 bool parsedCorrectly;
176 int attributeInt = pointAttributes[ mAttribute ].toInt( &parsedCorrectly );
177 if ( !parsedCorrectly )
181 if ( category.value() == attributeInt )
182 return category.renderState();
189 std::unique_ptr< QgsPointCloudClassifiedRenderer > r = std::make_unique< QgsPointCloudClassifiedRenderer >();
191 r->setAttribute( element.attribute( QStringLiteral(
"attribute" ), QStringLiteral(
"Classification" ) ) );
194 const QDomElement catsElem = element.firstChildElement( QStringLiteral(
"categories" ) );
195 if ( !catsElem.isNull() )
197 QDomElement catElem = catsElem.firstChildElement();
198 while ( !catElem.isNull() )
200 if ( catElem.tagName() == QLatin1String(
"category" ) )
202 const int value = catElem.attribute( QStringLiteral(
"value" ) ).toInt();
203 const double size = catElem.attribute( QStringLiteral(
"pointSize" ), QStringLiteral(
"0" ) ).toDouble();
204 const QString label = catElem.attribute( QStringLiteral(
"label" ) );
205 const bool render = catElem.attribute( QStringLiteral(
"render" ) ) != QLatin1String(
"false" );
209 catElem = catElem.nextSiblingElement();
214 r->restoreCommonProperties( element, context );
244 QDomElement rendererElem = doc.createElement( QStringLiteral(
"renderer" ) );
246 rendererElem.setAttribute( QStringLiteral(
"type" ), QStringLiteral(
"classified" ) );
247 rendererElem.setAttribute( QStringLiteral(
"attribute" ), mAttribute );
250 QDomElement catsElem = doc.createElement( QStringLiteral(
"categories" ) );
253 QDomElement catElem = doc.createElement( QStringLiteral(
"category" ) );
254 catElem.setAttribute( QStringLiteral(
"value" ), QString::number( category.value() ) );
255 catElem.setAttribute( QStringLiteral(
"pointSize" ), QString::number( category.pointSize() ) );
256 catElem.setAttribute( QStringLiteral(
"label" ), category.label() );
258 catElem.setAttribute( QStringLiteral(
"render" ), category.renderState() ?
"true" :
"false" );
259 catsElem.appendChild( catElem );
261 rendererElem.appendChild( catsElem );
277 QList<QgsLayerTreeModelLegendNode *> nodes;
281 nodes <<
new QgsRasterSymbolLegendNode( nodeLayer, category.color(), category.label(),
nullptr,
true, QString::number( category.value() ) );
292 res << QString::number( category.value() );
300 const int value = key.toInt( &ok );
306 if ( category.value() == value )
307 return category.renderState();
315 const int value = key.toInt( &ok );
319 for (
auto it = mCategories.begin(); it != mCategories.end(); ++it )
321 if ( it->value() == value )
323 it->setRenderState( state );
351 mCategories.append( category );
356 std::unique_ptr< QgsPointCloudClassifiedRendererPreparedData > data = std::make_unique< QgsPointCloudClassifiedRendererPreparedData >();
357 data->attributeName = mAttribute;
361 if ( !category.renderState() )
364 data->colors.insert( category.value(), category.color() );
388 int attributeValue = 0;
390 return colors.value( attributeValue );
static QColor colorFromString(const QString &string)
Decodes a string into a color value.
static QString colorToString(const QColor &color)
Encodes a color into a string value.
Custom exception class for Coordinate Reference System related exceptions.
QgsRange which stores a range of double values.
bool isInfinite() const
Returns true if the range consists of all possible values.
Layer tree node points to a map layer.
Collection of point cloud attributes.
int pointRecordSize() const
Returns total size of record.
const QgsPointCloudAttribute * find(const QString &attributeName, int &offset) const
Finds the attribute with the name.
Attribute for point cloud data pair of name and size in bytes.
DataType
Systems of unit measurement.
DataType type() const
Returns the data type.
Base class for storing raw data from point cloud nodes.
const char * data() const
Returns raw pointer to data.
QgsPointCloudAttributeCollection attributes() const
Returns the attributes that are stored in the data block, along with their size.
int pointCount() const
Returns number of points that are stored in the block.
int pointRecordSize() const
Returns the total size of each individual point record.
Represents an individual category (class) from a QgsPointCloudClassifiedRenderer.
QgsPointCloudCategory()=default
int value() const
Returns the value corresponding to this category.
bool renderState() const
Returns true if the category is currently enabled and should be rendered.
QColor color() const
Returns the color which will be used to render this category.
double pointSize() const
Returns the point size for this category.
bool operator==(const QgsPointCloudCategory &other) const
Equality operator.
QString label() const
Returns the label for this category, which is used to represent the category within legends and the l...
QgsPointCloudAttribute::DataType attributeType
QColor pointColor(const QgsPointCloudBlock *block, int i, double z) override
An optimised method of retrieving the color of a point from a point cloud block.
QSet< QString > usedAttributes() const override
Returns the set of attributes used by the prepared point cloud renderer.
bool prepareBlock(const QgsPointCloudBlock *block) override
Prepares the renderer for using the specified block.
QHash< int, QColor > colors
void addCategory(const QgsPointCloudCategory &category)
Adds a category to the renderer.
QString attribute() const
Returns the attribute to use for the renderer.
QgsPointCloudClassifiedRenderer(const QString &attributeName=QString(), const QgsPointCloudCategoryList &categories=QgsPointCloudCategoryList())
Constructor for QgsPointCloudClassifiedRenderer.
bool willRenderPoint(const QVariantMap &pointAttributes) override
QDomElement save(QDomDocument &doc, const QgsReadWriteContext &context) const override
Saves the renderer configuration to an XML element.
void checkLegendItem(const QString &key, bool state=true) override
Called when the check state of the legend item with the specified key is changed.
QSet< QString > usedAttributes(const QgsPointCloudRenderContext &context) const override
Returns a list of attributes required by this renderer.
static QgsPointCloudRenderer * create(QDomElement &element, const QgsReadWriteContext &context)
Creates an RGB renderer from an XML element.
QgsPointCloudCategoryList categories() const
Returns the classification categories used for rendering.
static QgsPointCloudCategoryList defaultCategories()
Returns the default list of categories.
bool legendItemChecked(const QString &key) override
Returns true if the legend item with the specified key is checked.
QgsPointCloudRenderer * clone() const override
Create a deep copy of this renderer.
void setCategories(const QgsPointCloudCategoryList &categories)
Sets the classification categories used for rendering.
QList< QgsLayerTreeModelLegendNode * > createLegendNodes(QgsLayerTreeLayer *nodeLayer) override
Creates a set of legend nodes representing the renderer.
void renderBlock(const QgsPointCloudBlock *block, QgsPointCloudRenderContext &context) override
Renders a block of point cloud data using the specified render context.
std::unique_ptr< QgsPreparedPointCloudRendererData > prepare() override
Returns prepared data container for bulk point color retrieval.
QStringList legendRuleKeys() const override
Returns a list of all rule keys for legend nodes created by the renderer.
void setAttribute(const QString &attribute)
Sets the attribute to use for the renderer.
QString type() const override
Returns the identifier of the renderer type.
static QMap< int, QString > translatedLasClassificationCodes()
Returns the map of LAS classification code to translated string value, corresponding to the ASPRS Sta...
Encapsulates the render context for a 2D point cloud rendering operation.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
void incrementPointsRendered(long count)
Increments the count of points rendered by the specified amount.
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...
Abstract base class for 2d point cloud renderers.
bool renderAsTriangles() const
Returns whether points are triangulated to render solid surface.
void drawPointToElevationMap(double x, double y, double z, QgsPointCloudRenderContext &context) const
Draws a point at the elevation z using at the specified x and y (in map coordinates) on the elevation...
void saveCommonProperties(QDomElement &element, const QgsReadWriteContext &context) const
Saves common renderer properties (such as point size and screen error) to the specified DOM element.
const QgsMapUnitScale & pointSizeMapUnitScale() const
Returns the map unit scale used for the point size.
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 copyCommonProperties(QgsPointCloudRenderer *destination) const
Copies common point cloud properties (such as point size and screen error) to the destination rendere...
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).
Qgis::RenderUnit pointSizeUnit() const
Returns the units used for the point size.
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.
bool contains(const QgsRange< T > &other) const
Returns true if this range contains another range.
Implementation of legend node interface for displaying raster legend entries.
The class is used as a container of context for various read/write operations on other objects.
A rectangle specified with double values.
bool contains(const QgsRectangle &rect) const
Returns true when rectangle contains other rectangle.
double width() const
Returns the width of the rectangle.
void grow(double delta)
Grows the rectangle in place by the specified amount.
double height() const
Returns the height of the rectangle.
double convertToPainterUnits(double size, Qgis::RenderUnit unit, const QgsMapUnitScale &scale=QgsMapUnitScale(), Qgis::RenderSubcomponentProperty property=Qgis::RenderSubcomponentProperty::Generic) const
Converts a size from the specified units to painter units (pixels).
QgsElevationMap * elevationMap() const
Returns the destination elevation map for the render operation.
const QgsRectangle & extent() const
When rendering a map layer, calling this method returns the "clipping" extent for the layer (in the l...
QgsDoubleRange zRange() const
Returns the range of z-values which should be rendered.
bool renderingStopped() const
Returns true if the rendering operation has been stopped and any ongoing rendering should be canceled...
QPainter * previewRenderPainter()
Returns the const destination QPainter for temporary in-progress preview renders.
QgsCoordinateTransform coordinateTransform() const
Returns the current coordinate transform for the context.
QList< QgsPointCloudCategory > QgsPointCloudCategoryList