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 );
131 const double strokeRatio = 0.5;
135 const double minimumExtraSize = 40;
136 const double extraPixel = minimumExtraSize > pixelSize * strokeRatio ? minimumExtraSize : pixelSize * strokeRatio;
137 const int pixelWithExtra = std::ceil( pixelSize + extraPixel );
139 const QImage symbolImage = symbolPixmap.toImage();
140 const QImage flippedSymbolImage = symbolImage.mirrored();
141 setTexture2DFromImage( flippedSymbolImage, pixelWithExtra );
144void QgsPoint3DBillboardMaterial::setTexture2DFromTextureImage( Qt3DRender::QAbstractTextureImage *textureImage )
147 Qt3DRender::QTexture2D *texture2D =
new Qt3DRender::QTexture2D(
this );
148 texture2D->setGenerateMipMaps(
false );
149 texture2D->setMagnificationFilter( Qt3DRender::QTexture2D::Linear );
150 texture2D->setMinificationFilter( Qt3DRender::QTexture2D::Linear );
153 texture2D->addTextureImage( textureImage );
155 mTexture2D->setValue( QVariant::fromValue( texture2D ) );
double outputDpi() const
Returns DPI used for conversion between real world units (e.g.
QColor selectionColor() const
Returns color used for selected features.
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).
QSizeF windowSize() const
Returns the size of the view port.
~QgsPoint3DBillboardMaterial() override
QgsPoint3DBillboardMaterial()
QSizeF size() const
Returns the billboard size.
void useDefaultSymbol(const Qgs3DMapSettings &map, bool selected=false)
Set default symbol for the texture with map and selected parameter for rendering.
void setViewportSize(const QSizeF size)
Set the size of the view port.
void setSize(const QSizeF size)
Set the billboard size.
void setTexture2DFromSymbol(QgsMarkerSymbol *markerSymbol, const Qgs3DMapSettings &map, bool selected=false)
Set markerSymbol for the texture with map and selected parameter for rendering.
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 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)
Returns a pixmap preview for a color ramp.
static QgsSymbol * defaultSymbol(Qgis::GeometryType geomType)
Returns a new default symbol for the specified geometry type.