40 #include <Qt3DExtras/QPhongMaterial>
41 #include <Qt3DRender/QRenderSettings>
49 engine.
renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::Always );
51 auto requestImageFcn = [&engine, scene]
59 auto saveImageFcn = [&evLoop, &resImage](
const QImage & img )
66 QMetaObject::Connection conn2;
80 QObject::disconnect( conn1 );
82 QObject::disconnect( conn2 );
84 engine.
renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::OnDemand );
91 const QString &outputDirectory,
92 const QString &fileNameTemplate,
93 const QSize &outputSize,
103 engine.
renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::Always );
105 if ( animationSettings.
keyFrames().size() < 2 )
107 error = QObject::tr(
"Unable to export 3D animation. Add at least 2 keyframes" );
111 const float duration = animationSettings.
duration();
114 error = QObject::tr(
"Unable to export 3D animation (invalid duration)." );
120 const int totalFrames =
static_cast<int>( duration * framesPerSecond );
122 if ( fileNameTemplate.isEmpty() )
124 error = QObject::tr(
"Filename template is empty" );
128 const int numberOfDigits = fileNameTemplate.count( QLatin1Char(
'#' ) );
129 if ( numberOfDigits < 0 )
131 error = QObject::tr(
"Wrong filename template format (must contain #)" );
134 const QString token( numberOfDigits, QLatin1Char(
'#' ) );
135 if ( !fileNameTemplate.contains( token ) )
137 error = QObject::tr(
"Filename template must contain all # placeholders in one continuous group." );
141 while ( time <= duration )
148 error = QObject::tr(
"Export canceled" );
151 feedback->
setProgress( frameNo /
static_cast<double>( totalFrames ) * 100 );
158 QString fileName( fileNameTemplate );
159 const QString frameNoPaddedLeft( QStringLiteral(
"%1" ).arg( frameNo, numberOfDigits, 10, QChar(
'0' ) ) );
160 fileName.replace( token, frameNoPaddedLeft );
161 const QString path = QDir( outputDirectory ).filePath( fileName );
167 time += 1.0f /
static_cast<float>( framesPerSecond );
176 if ( maxError <= 0 || tileResolution <= 0 || tile0width <= 0 )
183 const double zoomLevel = -log( tileResolution * maxError / tile0width ) / log( 2 );
184 return round( zoomLevel );
194 default: Q_ASSERT(
false );
return QString();
201 if (
str == QLatin1String(
"absolute" ) )
203 else if (
str == QLatin1String(
"terrain" ) )
216 default: Q_ASSERT(
false );
return QString();
223 if (
str == QLatin1String(
"vertex" ) )
243 if (
str == QLatin1String(
"front" ) )
245 else if (
str == QLatin1String(
"back" ) )
247 else if (
str == QLatin1String(
"front-and-back" ) )
280 pt.
setX( lineString->
xAt( i ) );
281 pt.
setY( lineString->
yAt( i ) );
293 geomZ = lineString->
zAt( i );
296 lineString->
setZAt( i, z );
303 if ( !polygon->
is3D() )
311 QgsLineString *lineString = qgsgeometry_cast<QgsLineString *>( curve );
320 QgsLineString *lineString = qgsgeometry_cast<QgsLineString *>( curve );
332 const float *d = m.constData();
335 for (
int i = 0; i < 16; ++i )
336 elems << QString::number( d[i] );
337 return elems.join(
' ' );
344 QStringList elems =
str.split(
' ' );
345 for (
int i = 0; i < 16; ++i )
346 d[i] = elems[i].toFloat();
373 h = terrainZ + geomZ;
376 positions.append( QVector3D( pt.
x() - map.
origin().
x(), h, -( pt.
y() - map.
origin().
y() ) ) );
377 QgsDebugMsgLevel( QStringLiteral(
"%1 %2 %3" ).arg( positions.last().x() ).arg( positions.last().y() ).arg( positions.last().z() ), 2 );
386 static inline uint outcode( QVector4D v )
396 if ( v.x() < -v.w() ) code |= 0x01;
397 if ( v.x() > v.w() ) code |= 0x02;
398 if ( v.y() < -v.w() ) code |= 0x04;
399 if ( v.y() > v.w() ) code |= 0x08;
400 if ( v.z() < -v.w() ) code |= 0x10;
401 if ( v.z() > v.w() ) code |= 0x20;
420 for (
int i = 0; i < 8; ++i )
422 const QVector4D p( ( ( i >> 0 ) & 1 ) ? bbox.
xMin : bbox.
xMax,
423 ( ( i >> 1 ) & 1 ) ? bbox.
yMin : bbox.
yMax,
424 ( ( i >> 2 ) & 1 ) ? bbox.
zMin : bbox.
zMax, 1 );
425 const QVector4D pc = viewProjectionMatrix * p;
429 out = out & outcode( pc );
437 mapCoords.
z() - origin.
z(),
438 -( mapCoords.
y() - origin.
y() ) );
445 -worldCoords.
z() + origin.
y(),
446 worldCoords.
y() + origin.
z() );
456 ct.setBallparkTransformsAreAppropriate(
true );
459 extentMapCrs = ct.transformBoundingBox( extentMapCrs );
464 QgsDebugMsg( QStringLiteral(
"3D utils: transformation of extent failed: " ) + extentMapCrs.toString( -1 ) );
472 const QgsRectangle extentMapCrs( _tryReprojectExtent2D( extent, layerCrs, mapCrs, context ) );
479 return _tryReprojectExtent2D( extentMap, mapCrs, layerCrs, context );
488 QgsAABB rootBbox( worldExtentMin3D.
x(), worldExtentMin3D.
y(), worldExtentMin3D.
z(),
489 worldExtentMax3D.
x(), worldExtentMax3D.
y(), worldExtentMax3D.
z() );
497 const QgsRectangle extentMap( worldExtentMin3D.
x(), worldExtentMin3D.
y(), worldExtentMax3D.
x(), worldExtentMax3D.
y() );
514 mapPoint2.
set( pt.
x(), pt.
y(), mapPoint1.
z() );
533 zMin = std::numeric_limits<double>::max();
534 zMax = std::numeric_limits<double>::min();
543 const double z = ( *vit ).z();
544 if ( z < zMin ) zMin = z;
545 if ( z > zMax ) zMax = z;
549 if ( zMin == std::numeric_limits<double>::max() && zMax == std::numeric_limits<double>::min() )
577 const QVector3D deviceCoords( point.x(), point.y(), 0.0 );
579 const QVector3D normDeviceCoords( 2.0 * deviceCoords.x() / windowSize.width() - 1.0f, 1.0f - 2.0 * deviceCoords.y() / windowSize.height(), camera->nearPlane() );
581 const QVector4D rayClip( normDeviceCoords.x(), normDeviceCoords.y(), -1.0, 0.0 );
583 const QMatrix4x4 invertedProjMatrix = camera->projectionMatrix().inverted();
584 const QMatrix4x4 invertedViewMatrix = camera->viewMatrix().inverted();
587 QVector4D rayDirView = invertedProjMatrix * rayClip;
589 const QVector4D rayOriginWorld = invertedViewMatrix * QVector4D( 0.0f, 0.0f, 0.0f, 1.0f );
592 rayDirView.setZ( -1.0f );
593 rayDirView.setW( 0.0f );
594 const QVector4D rayDirWorld4D = invertedViewMatrix * rayDirView;
595 QVector3D rayDirWorld( rayDirWorld4D.x(), rayDirWorld4D.y(), rayDirWorld4D.z() );
596 rayDirWorld = rayDirWorld.normalized();
598 return QgsRay3D( QVector3D( rayOriginWorld ), rayDirWorld );
Keyframe interpolate(float time) const
Interpolates camera position and rotation at the given point in time.
float duration() const
Returns duration of the whole animation in seconds.
Keyframes keyFrames() const
Returns keyframes of the animation.
@ Ready
The scene is fully loaded/updated.
QgsCameraController * cameraController()
Returns camera controller.
void sceneStateChanged()
Emitted when the scene's state has changed.
SceneState sceneState() const
Returns the current state of the scene.
QgsTerrainGenerator * terrainGenerator() const
Returns terrain generator. It takes care of producing terrain tiles from the input data.
double terrainVerticalScale() const
Returns vertical scale (exaggeration) of terrain.
QgsVector3D origin() const
Returns coordinates in map CRS at which 3D scene has origin (0,0,0)
AltitudeClamping
how to handle altitude of vector features
@ AltClampAbsolute
Z_final = z_geometry.
@ AltClampTerrain
Z_final = z_terrain.
@ AltClampRelative
Z_final = z_terrain + z_geometry.
AltitudeBinding
how to handle clamping of vertices of individual features
@ AltBindCentroid
Clamp just centroid of feature.
@ AltBindVertex
Clamp every vertex of feature.
CullingMode
Triangle culling mode.
@ FrontAndBack
Will not render anything.
@ NoCulling
Will render both front and back faces of triangles.
@ Front
Will render only back faces of triangles.
@ Back
Will render only front faces of triangles (recommended when input data are consistent)
static QgsVector3D transformWorldCoordinates(const QgsVector3D &worldPoint1, const QgsVector3D &origin1, const QgsCoordinateReferenceSystem &crs1, const QgsVector3D &origin2, const QgsCoordinateReferenceSystem &crs2, const QgsCoordinateTransformContext &context)
Transforms a world point from (origin1, crs1) to (origin2, crs2)
static QString altBindingToString(Qgs3DTypes::AltitudeBinding altBind)
Converts a value from AltitudeBinding enum to a string.
static Qgs3DTypes::CullingMode cullingModeFromString(const QString &str)
Converts a string to a value from CullingMode enum.
static QString altClampingToString(Qgs3DTypes::AltitudeClamping altClamp)
Converts a value from AltitudeClamping enum to a string.
static void clampAltitudes(QgsLineString *lineString, Qgs3DTypes::AltitudeClamping altClamp, Qgs3DTypes::AltitudeBinding altBind, const QgsPoint ¢roid, float height, const Qgs3DMapSettings &map)
Clamps altitude of vertices of a linestring according to the settings.
static QString matrix4x4toString(const QMatrix4x4 &m)
Converts a 4x4 transform matrix to a string.
static QgsRectangle worldToMapExtent(const QgsAABB &bbox, const QgsVector3D &mapOrigin)
Converts axis aligned bounding box in 3D world coordinates to extent in map coordinates.
static QgsRectangle worldToLayerExtent(const QgsAABB &bbox, const QgsCoordinateReferenceSystem &layerCrs, const QgsVector3D &mapOrigin, const QgsCoordinateReferenceSystem &mapCrs, const QgsCoordinateTransformContext &context)
Converts axis aligned bounding box in 3D world coordinates to extent in map layer CRS.
static int maxZoomLevel(double tile0width, double tileResolution, double maxError)
Calculates the highest needed zoom level for tiles in quad-tree given width of the base tile (zoom le...
static QgsAABB mapToWorldExtent(const QgsRectangle &extent, double zMin, double zMax, const QgsVector3D &mapOrigin)
Converts map extent to axis aligned bounding box in 3D world coordinates.
static float clampAltitude(const QgsPoint &p, Qgs3DTypes::AltitudeClamping altClamp, Qgs3DTypes::AltitudeBinding altBind, float height, const QgsPoint ¢roid, const Qgs3DMapSettings &map)
Clamps altitude of a vertex according to the settings, returns Z value.
static QgsAABB layerToWorldExtent(const QgsRectangle &extent, double zMin, double zMax, const QgsCoordinateReferenceSystem &layerCrs, const QgsVector3D &mapOrigin, const QgsCoordinateReferenceSystem &mapCrs, const QgsCoordinateTransformContext &context)
Converts extent (in map layer's CRS) to axis aligned bounding box in 3D world coordinates.
static QString cullingModeToString(Qgs3DTypes::CullingMode mode)
Converts a value from CullingMode enum to a string.
static bool isCullable(const QgsAABB &bbox, const QMatrix4x4 &viewProjectionMatrix)
Returns true if bbox is completely outside the current viewing volume.
static void estimateVectorLayerZRange(QgsVectorLayer *layer, double &zMin, double &zMax)
Try to estimate range of Z values used in the given vector layer and store that in zMin and zMax.
static QgsPhongMaterialSettings phongMaterialFromQt3DComponent(Qt3DExtras::QPhongMaterial *material)
Returns phong material settings object based on the Qt3D material.
static void extractPointPositions(const QgsFeature &f, const Qgs3DMapSettings &map, Qgs3DTypes::AltitudeClamping altClamp, QVector< QVector3D > &positions)
Calculates (x,y,z) positions of (multi)point from the given feature.
static Qgs3DTypes::AltitudeClamping altClampingFromString(const QString &str)
Converts a string to a value from AltitudeClamping enum.
static QMatrix4x4 stringToMatrix4x4(const QString &str)
Convert a string to a 4x4 transform matrix.
static QgsVector3D worldToMapCoordinates(const QgsVector3D &worldCoords, const QgsVector3D &origin)
Converts 3D world coordinates to map coordinates (applies offset and turns (x,y,z) into (x,...
static QgsVector3D mapToWorldCoordinates(const QgsVector3D &mapCoords, const QgsVector3D &origin)
Converts map coordinates to 3D world coordinates (applies offset and turns (x,y,z) into (x,...
static bool exportAnimation(const Qgs3DAnimationSettings &animationSettings, const Qgs3DMapSettings &mapSettings, int framesPerSecond, const QString &outputDirectory, const QString &fileNameTemplate, const QSize &outputSize, QString &error, QgsFeedback *feedback=nullptr)
Captures 3D animation frames to the selected folder.
static QgsRay3D rayFromScreenPoint(const QPoint &point, const QSize &windowSize, Qt3DRender::QCamera *camera)
Convert from clicked point on the screen to a ray in world coordinates.
static QImage captureSceneImage(QgsAbstract3DEngine &engine, Qgs3DMapScene *scene)
Captures image of the current 3D scene of a 3D engine.
static Qgs3DTypes::AltitudeBinding altBindingFromString(const QString &str)
Converts a string to a value from AltitudeBinding enum.
static QgsExpressionContext globalProjectLayerExpressionContext(QgsVectorLayer *layer)
Returns expression context for use in preparation of 3D data of a layer.
void requestCaptureImage()
Starts a request for an image rendered by the engine.
void imageCaptured(const QImage &image)
Emitted after a call to requestCaptureImage() to return the captured image.
virtual Qt3DRender::QRenderSettings * renderSettings()=0
Returns access to the engine's render settings (the frame graph can be accessed from here)
Abstract base class for all geometries.
vertex_iterator vertices_end() const
Returns STL-style iterator pointing to the imaginary vertex after the last vertex of the geometry.
bool is3D() const SIP_HOLDGIL
Returns true if the geometry is 3D and contains a z-value.
vertex_iterator vertices_begin() const
Returns STL-style iterator pointing to the first vertex of the geometry.
virtual QgsPoint centroid() const
Returns the centroid of the geometry.
void setLookingAtPoint(const QgsVector3D &point, float distance, float pitch, float yaw)
Sets the complete camera configuration: the point towards it is looking (in 3D world coordinates),...
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Custom exception class for Coordinate Reference System related exceptions.
bool addZValue(double zValue=0) override
Adds a z-dimension to the geometry, initialized to a preset value.
const QgsCurve * interiorRing(int i) const SIP_HOLDGIL
Retrieves an interior ring from the curve polygon.
const QgsCurve * exteriorRing() const SIP_HOLDGIL
Returns the curve polygon's exterior ring.
int numInteriorRings() const SIP_HOLDGIL
Returns the number of interior rings contained with the curve polygon.
Abstract base class for curved geometry type.
static QgsExpressionContextScope * projectScope(const QgsProject *project)
Creates a new scope which contains variables and functions relating to a QGIS project.
static QgsExpressionContextScope * layerScope(const QgsMapLayer *layer)
Creates a new scope which contains variables and functions relating to a QgsMapLayer.
static QgsExpressionContextScope * globalScope()
Creates a new scope which contains variables and functions relating to the global QGIS context.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
This class wraps a request for features to a vector layer (or directly its vector data provider).
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Base class for feedback objects to be used for cancellation of something running in a worker thread.
bool isCanceled() const SIP_HOLDGIL
Tells whether the operation has been canceled already.
void setProgress(double progress)
Sets the current progress for the feedback object.
A geometry is the spatial representation of a feature.
const QgsAbstractGeometry * constGet() const SIP_HOLDGIL
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
QgsAbstractGeometry::vertex_iterator vertices_begin() const
Returns STL-style iterator pointing to the first vertex of the geometry.
QgsAbstractGeometry::vertex_iterator vertices_end() const
Returns STL-style iterator pointing to the imaginary vertex after the last vertex of the geometry.
Line string geometry type, with support for z-dimension and m-values.
double yAt(int index) const override
Returns the y-coordinate of the specified node in the line string.
void setZAt(int index, double z)
Sets the z-coordinate of the specified node in the line string.
int nCoordinates() const override SIP_HOLDGIL
Returns the number of nodes contained in the geometry.
double zAt(int index) const
Returns the z-coordinate of the specified node in the line string.
double xAt(int index) const override
Returns the x-coordinate of the specified node in the line string.
void setSize(QSize s) override
Sets the size of the rendering area (in pixels)
void setRootEntity(Qt3DCore::QEntity *root) override
Sets root entity of the 3D scene.
Qt3DRender::QRenderSettings * renderSettings() override
Returns access to the engine's render settings (the frame graph can be accessed from here)
void setDiffuse(const QColor &diffuse)
Sets diffuse color component.
void setAmbient(const QColor &ambient)
Sets ambient color component.
void setShininess(float shininess)
Sets shininess of the surface.
void setSpecular(const QColor &specular)
Sets specular color component.
A class to represent a 2D point.
void set(double x, double y) SIP_HOLDGIL
Sets the x and y value of the point.
void setX(double x) SIP_HOLDGIL
Sets the x value of the point.
void setY(double y) SIP_HOLDGIL
Sets the y value of the point.
Point geometry type, with support for z-dimension and m-values.
static QgsProject * instance()
Returns the QgsProject singleton instance.
A representation of a ray in 3D.
A rectangle specified with double values.
double yMaximum() const SIP_HOLDGIL
Returns the y maximum value (top side of rectangle).
double xMaximum() const SIP_HOLDGIL
Returns the x maximum value (right side of rectangle).
double xMinimum() const SIP_HOLDGIL
Returns the x minimum value (left side of rectangle).
double yMinimum() const SIP_HOLDGIL
Returns the y minimum value (bottom side of rectangle).
virtual float heightAt(double x, double y, const Qgs3DMapSettings &map) const
Returns height at (x,y) in terrain's CRS.
double y() const
Returns Y coordinate.
double z() const
Returns Z coordinate.
double x() const
Returns X coordinate.
void set(double x, double y, double z)
Sets vector coordinates.
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE QgsWkbTypes::Type wkbType() const FINAL
Returns the WKBType or WKBUnknown in case of error.
QgsFeatureIterator getFeatures(const QgsFeatureRequest &request=QgsFeatureRequest()) const FINAL
Queries the layer for features specified in request.
static bool hasZ(Type type) SIP_HOLDGIL
Tests whether a WKB type contains the z-dimension.
CORE_EXPORT QgsMeshVertex centroid(const QgsMeshFace &face, const QVector< QgsMeshVertex > &vertices)
Returns the centroid of the face.
#define QgsDebugMsgLevel(str, level)
float pitch
Tilt of the camera in degrees (0 = looking from the top, 90 = looking from the side,...
float yaw
Horizontal rotation around the focal point in degrees.
QgsVector3D point
Point towards which the camera is looking in 3D world coords.
float dist
Distance of the camera from the focal point.