29 return QStringLiteral(
"rgb" );
34 std::unique_ptr< QgsPointCloudRgbRenderer > res = std::make_unique< QgsPointCloudRgbRenderer >();
35 res->mRedAttribute = mRedAttribute;
36 res->mGreenAttribute = mGreenAttribute;
37 res->mBlueAttribute = mBlueAttribute;
39 if ( mRedContrastEnhancement )
43 if ( mGreenContrastEnhancement )
47 if ( mBlueContrastEnhancement )
61 const char *ptr = block->
data();
73 attribute = request.
find( mGreenAttribute, greenOffset );
79 attribute = request.
find( mBlueAttribute, blueOffset );
96 const bool reproject = ct.
isValid();
97 for (
int i = 0; i < count; ++i )
107 z =
pointZ( context, ptr, i );
112 pointXY( context, ptr, i, x, y );
113 if ( visibleExtent.
contains( x, y ) )
128 context.
getAttribute( ptr, i * recordSize + redOffset, redType, red );
130 context.
getAttribute( ptr, i * recordSize + greenOffset, greenType, green );
132 context.
getAttribute( ptr, i * recordSize + blueOffset, blueType, blue );
135 if ( ( useRedContrastEnhancement && !mRedContrastEnhancement->isValueInDisplayableRange( red ) )
136 || ( useGreenContrastEnhancement && !mGreenContrastEnhancement->isValueInDisplayableRange( green ) )
137 || ( useBlueContrastEnhancement && !mBlueContrastEnhancement->isValueInDisplayableRange( blue ) ) )
143 if ( useRedContrastEnhancement )
145 red = mRedContrastEnhancement->enhanceContrast( red );
147 if ( useGreenContrastEnhancement )
149 green = mGreenContrastEnhancement->enhanceContrast( green );
151 if ( useBlueContrastEnhancement )
153 blue = mBlueContrastEnhancement->enhanceContrast( blue );
156 red = std::max( 0, std::min( 255, red ) );
157 green = std::max( 0, std::min( 255, green ) );
158 blue = std::max( 0, std::min( 255, blue ) );
160 drawPoint( x, y, QColor( red, green, blue ), context );
170 std::unique_ptr< QgsPointCloudRgbRenderer > r = std::make_unique< QgsPointCloudRgbRenderer >();
172 r->setRedAttribute( element.attribute( QStringLiteral(
"red" ), QStringLiteral(
"Red" ) ) );
173 r->setGreenAttribute( element.attribute( QStringLiteral(
"green" ), QStringLiteral(
"Green" ) ) );
174 r->setBlueAttribute( element.attribute( QStringLiteral(
"blue" ), QStringLiteral(
"Blue" ) ) );
176 r->restoreCommonProperties( element, context );
180 const QDomElement redContrastElem = element.firstChildElement( QStringLiteral(
"redContrastEnhancement" ) );
181 if ( !redContrastElem.isNull() )
189 const QDomElement greenContrastElem = element.firstChildElement( QStringLiteral(
"greenContrastEnhancement" ) );
190 if ( !greenContrastElem.isNull() )
198 const QDomElement blueContrastElem = element.firstChildElement( QStringLiteral(
"blueContrastEnhancement" ) );
199 if ( !blueContrastElem.isNull() )
211 QDomElement rendererElem = doc.createElement( QStringLiteral(
"renderer" ) );
213 rendererElem.setAttribute( QStringLiteral(
"type" ), QStringLiteral(
"rgb" ) );
215 rendererElem.setAttribute( QStringLiteral(
"red" ), mRedAttribute );
216 rendererElem.setAttribute( QStringLiteral(
"green" ), mGreenAttribute );
217 rendererElem.setAttribute( QStringLiteral(
"blue" ), mBlueAttribute );
222 if ( mRedContrastEnhancement )
224 QDomElement redContrastElem = doc.createElement( QStringLiteral(
"redContrastEnhancement" ) );
225 mRedContrastEnhancement->writeXml( doc, redContrastElem );
226 rendererElem.appendChild( redContrastElem );
228 if ( mGreenContrastEnhancement )
230 QDomElement greenContrastElem = doc.createElement( QStringLiteral(
"greenContrastEnhancement" ) );
231 mGreenContrastEnhancement->writeXml( doc, greenContrastElem );
232 rendererElem.appendChild( greenContrastElem );
234 if ( mBlueContrastEnhancement )
236 QDomElement blueContrastElem = doc.createElement( QStringLiteral(
"blueContrastEnhancement" ) );
237 mBlueContrastEnhancement->writeXml( doc, blueContrastElem );
238 rendererElem.appendChild( blueContrastElem );
247 res << mRedAttribute << mGreenAttribute << mBlueAttribute;
253 std::unique_ptr< QgsPointCloudRgbRendererPreparedData > data = std::make_unique< QgsPointCloudRgbRendererPreparedData >();
254 data->redAttribute = mRedAttribute;
255 if ( mRedContrastEnhancement )
257 data->greenAttribute = mGreenAttribute;
258 if ( mGreenContrastEnhancement )
260 data->blueAttribute = mBlueAttribute;
261 if ( mBlueContrastEnhancement )
301 const char *ptr = block->
data();
333 red = std::max( 0, std::min( 255, red ) );
334 green = std::max( 0, std::min( 255, green ) );
335 blue = std::max( 0, std::min( 255, blue ) );
337 return QColor( red, green, blue );
342 return mRedAttribute;
352 return mGreenAttribute;
362 return mBlueAttribute;
372 return mRedContrastEnhancement.get();
377 mRedContrastEnhancement.reset( enhancement );
382 return mGreenContrastEnhancement.get();
387 mGreenContrastEnhancement.reset( enhancement );
392 return mBlueContrastEnhancement.get();
397 mBlueContrastEnhancement.reset( enhancement );
@ UnknownDataType
Unknown or unspecified type.
Manipulates raster or point cloud pixel values so that they enhanceContrast or clip into a specified ...
@ NoEnhancement
Default color scaling algorithm, no scaling is applied.
void readXml(const QDomElement &elem)
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.
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.
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.
void saveCommonProperties(QDomElement &element, const QgsReadWriteContext &context) const
Saves common renderer properties (such as point size and screen error) to the specified DOM element.
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).
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 useRedContrastEnhancement
std::unique_ptr< QgsContrastEnhancement > redContrastEnhancement
QSet< QString > usedAttributes() const override
Returns the set of attributes used by the prepared point cloud renderer.
std::unique_ptr< QgsContrastEnhancement > greenContrastEnhancement
bool prepareBlock(const QgsPointCloudBlock *block) override
Prepares the renderer for using the specified block.
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.
bool useGreenContrastEnhancement
std::unique_ptr< QgsContrastEnhancement > blueContrastEnhancement
QgsPointCloudAttribute::DataType blueType
bool useBlueContrastEnhancement
QgsPointCloudAttribute::DataType redType
QgsPointCloudAttribute::DataType greenType
std::unique_ptr< QgsPreparedPointCloudRendererData > prepare() override
Returns prepared data container for bulk point color retrieval.
void setRedContrastEnhancement(QgsContrastEnhancement *enhancement)
Sets the contrast enhancement to use for the red channel.
QString redAttribute() const
Returns the attribute to use for the red channel.
static QgsPointCloudRenderer * create(QDomElement &element, const QgsReadWriteContext &context)
Creates an RGB renderer from an XML element.
QString greenAttribute() const
Returns the attribute to use for the green channel.
QString type() const override
Returns the identifier of the renderer type.
QDomElement save(QDomDocument &doc, const QgsReadWriteContext &context) const override
Saves the renderer configuration to an XML element.
void setBlueContrastEnhancement(QgsContrastEnhancement *enhancement)
Sets the contrast enhancement to use for the blue channel.
void renderBlock(const QgsPointCloudBlock *block, QgsPointCloudRenderContext &context) override
Renders a block of point cloud data using the specified render context.
const QgsContrastEnhancement * greenContrastEnhancement() const
Returns the contrast enhancement to use for the green channel.
QString blueAttribute() const
Returns the attribute to use for the blue channel.
QgsPointCloudRgbRenderer()
Constructor for QgsPointCloudRgbRenderer.
void setGreenContrastEnhancement(QgsContrastEnhancement *enhancement)
Sets the contrast enhancement to use for the green channel.
void setBlueAttribute(const QString &attribute)
Sets the attribute to use for the blue channel.
const QgsContrastEnhancement * blueContrastEnhancement() const
Returns the contrast enhancement to use for the blue channel.
void setGreenAttribute(const QString &attribute)
Sets the attribute to use for the green channel.
void setRedAttribute(const QString &attribute)
Sets the attribute to use for the red channel.
QgsPointCloudRenderer * clone() const override
Create a deep copy of this renderer.
const QgsContrastEnhancement * redContrastEnhancement() const
Returns the contrast enhancement to use for the red channel.
QSet< QString > usedAttributes(const QgsPointCloudRenderContext &context) const override
Returns a list of attributes required by this renderer.
bool contains(const QgsRange< T > &other) const
Returns true if this range contains another range.
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 SIP_HOLDGIL
Returns true when rectangle contains other rectangle.
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...
QgsCoordinateTransform coordinateTransform() const
Returns the current coordinate transform for the context.