15#include <Qt3DRender/QParameter>
16#include <Qt3DRender/QShaderProgram>
17#include <Qt3DRender/QRenderPass>
18#include <Qt3DRender/QTechnique>
19#include <Qt3DRender/QGraphicsApiFilter>
20#include <Qt3DRender/QEffect>
21#include <Qt3DRender/QBlendEquationArguments>
22#include <Qt3DRender/QBlendEquation>
23#include <Qt3DRender/QNoDepthMask>
33 : mSize( new
Qt3DRender::QParameter(
"BB_SIZE", QSizeF( 100, 100 ), this ) )
34 , mViewportSize( new
Qt3DRender::QParameter(
"WIN_SCALE", QSizeF( 800, 600 ), this ) )
36 addParameter( mSize );
37 addParameter( mViewportSize );
40 mTexture2D =
new Qt3DRender::QParameter(
"tex0", QVariant(),
this );
41 addParameter( mTexture2D );
44 Qt3DRender::QBlendEquationArguments *blendState =
new Qt3DRender::QBlendEquationArguments;
45 blendState->setSourceRgb( Qt3DRender::QBlendEquationArguments::SourceAlpha );
46 blendState->setDestinationRgb( Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha );
48 Qt3DRender::QBlendEquation *blendEquation =
new Qt3DRender::QBlendEquation;
49 blendEquation->setBlendFunction( Qt3DRender::QBlendEquation::Add );
52 Qt3DRender::QShaderProgram *shaderProgram =
new Qt3DRender::QShaderProgram(
this );
53 shaderProgram->setVertexShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral(
"qrc:/shaders/billboards.vert" ) ) ) );
54 shaderProgram->setFragmentShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral(
"qrc:/shaders/billboards.frag" ) ) ) );
55 shaderProgram->setGeometryShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral(
"qrc:/shaders/billboards.geom" ) ) ) );
58 Qt3DRender::QRenderPass *renderPass =
new Qt3DRender::QRenderPass(
this );
59 renderPass->setShaderProgram( shaderProgram );
60 renderPass->addRenderState( blendState );
61 renderPass->addRenderState( blendEquation );
64 Qt3DRender::QFilterKey *filterKey =
new Qt3DRender::QFilterKey;
65 filterKey->setName( QStringLiteral(
"renderingStyle" ) );
66 filterKey->setValue(
"forward" );
69 Qt3DRender::QTechnique *technique =
new Qt3DRender::QTechnique;
70 technique->addRenderPass( renderPass );
71 technique->addFilterKey( filterKey );
72 technique->graphicsApiFilter()->setApi( Qt3DRender::QGraphicsApiFilter::OpenGL );
73 technique->graphicsApiFilter()->setProfile( Qt3DRender::QGraphicsApiFilter::CoreProfile );
74 technique->graphicsApiFilter()->setMajorVersion( 3 );
75 technique->graphicsApiFilter()->setMinorVersion( 1 );
78 Qt3DRender::QEffect *effect =
new Qt3DRender::QEffect(
this );
79 effect->addTechnique( technique );
88 mSize->setValue(
size );
93 return mSize->value().value<QSizeF>();
98 mViewportSize->setValue(
size );
103 return mViewportSize->value().value<QSizeF>();
106void QgsPoint3DBillboardMaterial::setTexture2DFromImage( QImage image,
double size )
110 QgsTerrainTextureImage *billboardTextureImage =
new QgsTerrainTextureImage( image, randomExtent, QStringLiteral(
"billboard material." ) );
112 setTexture2DFromTextureImage( billboardTextureImage );
133 const double strokeRatio = 0.5;
137 const double minimumExtraSize = 40;
138 const double extraPixel = minimumExtraSize > pixelSize * strokeRatio ? minimumExtraSize : pixelSize * strokeRatio;
139 const int pixelWithExtra = std::ceil( pixelSize + extraPixel );
141 const QImage symbolImage = symbolPixmap.toImage();
142 const QImage flippedSymbolImage = symbolImage.mirrored();
143 setTexture2DFromImage( flippedSymbolImage, pixelWithExtra );
146void QgsPoint3DBillboardMaterial::setTexture2DFromTextureImage( Qt3DRender::QAbstractTextureImage *textureImage )
149 Qt3DRender::QTexture2D *texture2D =
new Qt3DRender::QTexture2D(
this );
150 texture2D->setGenerateMipMaps(
false );
151 texture2D->setMagnificationFilter( Qt3DRender::QTexture2D::Linear );
152 texture2D->setMinificationFilter( Qt3DRender::QTexture2D::Linear );
155 texture2D->addTextureImage( textureImage );
157 mTexture2D->setValue( QVariant::fromValue( texture2D ) );
@ Antialiasing
Use antialiasing while drawing.
@ HighQualityImageTransforms
Enable high quality image transformations, which results in better appearance of scaled or rotated ra...
QColor selectionColor() const
Returns color used for selected features.
double outputDpi() const
Returns DPI used for conversion between real world units (e.g.
A marker symbol type, for rendering Point and MultiPoint geometries.
double size() const
Returns the estimated size for the whole symbol, which is the maximum size of all marker symbol layer...
Qgis::RenderUnit sizeUnit() const
Returns the size units for the whole symbol (including all symbol layers).
void useDefaultSymbol(const Qgs3DRenderContext &context, bool selected=false)
Set default symbol for the texture with context and selected parameter for rendering.
QSizeF windowSize() const
Returns the size of the view port.
~QgsPoint3DBillboardMaterial() override
void setTexture2DFromSymbol(QgsMarkerSymbol *markerSymbol, const Qgs3DRenderContext &context, bool selected=false)
Set markerSymbol for the texture with context and selected parameter for rendering.
QgsPoint3DBillboardMaterial()
QSizeF size() const
Returns the billboard size.
void setViewportSize(const QSizeF size)
Set the size of the view port.
void setSize(const QSizeF size)
Set the billboard size.
A rectangle specified with double values.
Contains information about the context of a rendering operation.
void setScaleFactor(double factor)
Sets the scaling factor for the render to convert painter units to physical sizes.
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).
void setFlag(Qgis::RenderContextFlag flag, bool on=true)
Enable or disable a particular flag (other flags are not affected)
void setSelectionColor(const QColor &color)
Sets the color to use when rendering selected features.
static QPixmap symbolPreviewPixmap(const QgsSymbol *symbol, QSize size, int padding=0, QgsRenderContext *customContext=nullptr, bool selected=false, const QgsExpressionContext *expressionContext=nullptr, const QgsLegendPatchShape *shape=nullptr, const QgsScreenProperties &screen=QgsScreenProperties())
Returns a pixmap preview for a color ramp.
static QgsSymbol * defaultSymbol(Qgis::GeometryType geomType)
Returns a new default symbol for the specified geometry type.