void QgsSimpleLine3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent, const Qgs3DRenderContext &context, LineData &out, bool selected )
{
if ( out.indexes.isEmpty() )
return;
// material (only ambient color is used for the color)
Qt3DExtras::QPhongMaterial *mat = _material( mSymbol );
if ( selected )
{
// update the material with selection colors
mat->setAmbient( context.map().selectionColor() );
}
// geometry renderer
QByteArray vertexBufferData;
vertexBufferData.resize( out.vertices.size() * 3 * sizeof( float ) );
float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
int idx = 0;
for ( const auto &v : qgis::as_const( out.vertices ) )
{
rawVertexArray[idx++] = v.x();
rawVertexArray[idx++] = v.y();
rawVertexArray[idx++] = v.z();
}
QByteArray indexBufferData;
indexBufferData.resize( out.indexes.size() * sizeof( int ) );
unsigned int *rawIndexArray = reinterpret_cast<unsigned int *>( indexBufferData.data() );
idx = 0;
for ( unsigned int indexVal : qgis::as_const( out.indexes ) )
{
rawIndexArray[idx++] = indexVal;
}
Qt3DCore::QEntity *entity = new Qt3DCore::QEntity;
Qt3DRender::QBuffer *vertexBuffer = new Qt3DRender::QBuffer( Qt3DRender::QBuffer::VertexBuffer, entity );
vertexBuffer->setData( vertexBufferData );
Qt3DRender::QBuffer *indexBuffer = new Qt3DRender::QBuffer( Qt3DRender::QBuffer::IndexBuffer, entity );
indexBuffer->setData( indexBufferData );
Qt3DRender::QAttribute *positionAttribute = new Qt3DRender::QAttribute( entity );
positionAttribute->setAttributeType( Qt3DRender::QAttribute::VertexAttribute );
positionAttribute->setBuffer( vertexBuffer );
positionAttribute->setVertexBaseType( Qt3DRender::QAttribute::Float );
positionAttribute->setVertexSize( 3 );
positionAttribute->setName( Qt3DRender::QAttribute::defaultPositionAttributeName() );
Qt3DRender::QAttribute *indexAttribute = new Qt3DRender::QAttribute( entity );
indexAttribute->setAttributeType( Qt3DRender::QAttribute::IndexAttribute );
indexAttribute->setBuffer( indexBuffer );
indexAttribute->setVertexBaseType( Qt3DRender::QAttribute::UnsignedInt );
Qt3DRender::QGeometry *geom = new Qt3DRender::QGeometry;
geom->addAttribute( positionAttribute );
geom->addAttribute( indexAttribute );
Qt3DRender::QGeometryRenderer *renderer = new Qt3DRender::QGeometryRenderer;
renderer->setPrimitiveType( Qt3DRender::QGeometryRenderer::LineStrip );
renderer->setGeometry( geom );
renderer->setVertexCount( out.vertices.count() );
renderer->setPrimitiveRestartEnabled( true );
renderer->setRestartIndexValue( 0 );
// make entity
entity->addComponent( renderer );
entity->addComponent( mat );
entity->setParent( parent );
}
Qt3DRender::QGeometryRenderer *QgsLine3DSymbolEntityNode::rendererSimple( const Qgs3DMapSettings &map, const QgsLine3DSymbol &symbol, const QgsVectorLayer *layer, const QgsFeatureRequest &request )
{
QVector<QVector3D> vertices;
vertices << QVector3D(); // the first index is invalid, we use it for primitive restart
QVector<unsigned int> indexes;
QgsPoint centroid;
QgsPointXY origin( map.origin().x(), map.origin().y() );
QgsFeature f;
QgsFeatureIterator fi = layer->getFeatures( request );
while ( fi.nextFeature( f ) )
{
if ( f.geometry().isNull() )
continue;
if ( symbol.altitudeBinding() == AltBindCentroid )
centroid = QgsPoint( f.geometry().centroid().asPoint() );
QgsGeometry geom = f.geometry();
const QgsAbstractGeometry *g = geom.constGet();
if ( const QgsLineString *ls = qgsgeometry_cast<const QgsLineString *>( g ) )
{
for ( int i = 0; i < ls->vertexCount(); ++i )
{
QgsPoint p = ls->pointN( i );
float z = Qgs3DUtils::clampAltitude( p, symbol.altitudeClamping(), symbol.altitudeBinding(), symbol.height(), centroid, map );
vertices << QVector3D( p.x() - map.origin().x(), z, -( p.y() - map.origin().y() ) );
indexes << vertices.count() - 1;
}
}
else if ( const QgsMultiLineString *mls = qgsgeometry_cast<const QgsMultiLineString *>( g ) )
{
for ( int nGeom = 0; nGeom < mls->numGeometries(); ++nGeom )
{
const QgsLineString *ls = qgsgeometry_cast<const QgsLineString *>( mls->geometryN( nGeom ) );
for ( int i = 0; i < ls->vertexCount(); ++i )
{
QgsPoint p = ls->pointN( i );
float z = Qgs3DUtils::clampAltitude( p, symbol.altitudeClamping(), symbol.altitudeBinding(), symbol.height(), centroid, map );
vertices << QVector3D( p.x() - map.origin().x(), z, -( p.y() - map.origin().y() ) );
indexes << vertices.count() - 1;
}
indexes << 0; // add primitive restart
}
}
indexes << 0; // add primitive restart
}
QByteArray vertexBufferData;
vertexBufferData.resize( vertices.size() * 3 * sizeof( float ) );
float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
int idx = 0;
for ( const auto &v : vertices )
{
rawVertexArray[idx++] = v.x();
rawVertexArray[idx++] = v.y();
rawVertexArray[idx++] = v.z();
}
QByteArray indexBufferData;
indexBufferData.resize( indexes.size() * sizeof( int ) );
unsigned int *rawIndexArray = reinterpret_cast<unsigned int *>( indexBufferData.data() );
idx = 0;
for ( unsigned int indexVal : indexes )
{
rawIndexArray[idx++] = indexVal;
}
Qt3DRender::QBuffer *vertexBuffer = new Qt3DRender::QBuffer( Qt3DRender::QBuffer::VertexBuffer, this );
vertexBuffer->setData( vertexBufferData );
Qt3DRender::QBuffer *indexBuffer = new Qt3DRender::QBuffer( Qt3DRender::QBuffer::IndexBuffer, this );
indexBuffer->setData( indexBufferData );
Qt3DRender::QAttribute *positionAttribute = new Qt3DRender::QAttribute( this );
positionAttribute->setAttributeType( Qt3DRender::QAttribute::VertexAttribute );
positionAttribute->setBuffer( vertexBuffer );
positionAttribute->setVertexBaseType( Qt3DRender::QAttribute::Float );
positionAttribute->setVertexSize( 3 );
positionAttribute->setName( Qt3DRender::QAttribute::defaultPositionAttributeName() );
Qt3DRender::QAttribute *indexAttribute = new Qt3DRender::QAttribute( this );
indexAttribute->setAttributeType( Qt3DRender::QAttribute::IndexAttribute );
indexAttribute->setBuffer( indexBuffer );
indexAttribute->setVertexBaseType( Qt3DRender::QAttribute::UnsignedInt );
Qt3DRender::QGeometry *geom = new Qt3DRender::QGeometry;
geom->addAttribute( positionAttribute );
geom->addAttribute( indexAttribute );
Qt3DRender::QGeometryRenderer *renderer = new Qt3DRender::QGeometryRenderer;
renderer->setPrimitiveType( Qt3DRender::QGeometryRenderer::LineStrip );
renderer->setGeometry( geom );
renderer->setVertexCount( vertices.count() );
renderer->setPrimitiveRestartEnabled( true );
renderer->setRestartIndexValue( 0 );
return renderer;
}
CustomMesh::CustomMesh(const MatrixX3f &tMatVert, const MatrixX3f tMatNorm, const MatrixX3i &tMatTris, const Vector3f &tVecOffset)
: Qt3DRender::QGeometryRenderer()
, m_iNumVert(tMatVert.rows())
{
Qt3DRender::QGeometry* customGeometry = new Qt3DRender::QGeometry(this);
m_pVertexDataBuffer = new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry);//QSharedPointer<Qt3DRender::QBuffer>(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry));
m_pNormalDataBuffer = new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry);//QSharedPointer<Qt3DRender::QBuffer>(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry));
m_pColorDataBuffer = new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry);//QSharedPointer<Qt3DRender::QBuffer>(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, customGeometry));
m_pIndexDataBuffer = new Qt3DRender::QBuffer(Qt3DRender::QBuffer::IndexBuffer, customGeometry);//QSharedPointer<Qt3DRender::QBuffer>(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::IndexBuffer, customGeometry));
//Fill vertexBuffer with data which hold the vertices, normals and colors
QByteArray vertexBufferData;
vertexBufferData.resize(tMatVert.rows() * 3 * (int)sizeof(float));
float *rawVertexArray = reinterpret_cast<float *>(vertexBufferData.data());
QByteArray normalBufferData;
normalBufferData.resize(tMatVert.rows() * 3 * (int)sizeof(float));
float *rawNormalArray = reinterpret_cast<float *>(normalBufferData.data());
QByteArray colorBufferData;
colorBufferData.resize(tMatVert.rows() * 3 * (int)sizeof(float));
float *rawColorArray = reinterpret_cast<float *>(colorBufferData.data());
int idxVert = 0;
int idxNorm = 0;
int idxColor = 0;
for(int i = 0; i<tMatVert.rows(); i++) {
//Vertex
rawVertexArray[idxVert++] = tMatVert(i,0) + tVecOffset(0);
rawVertexArray[idxVert++] = tMatVert(i,1) + tVecOffset(1);
rawVertexArray[idxVert++] = tMatVert(i,2) + tVecOffset(2);
//Normal
rawNormalArray[idxNorm++] = tMatNorm(i,0);
rawNormalArray[idxNorm++] = tMatNorm(i,1);
rawNormalArray[idxNorm++] = tMatNorm(i,2);
//Color (this is the default color and will be used until the updateVertColor function was called)
rawColorArray[idxColor++] = 0.5f;
rawColorArray[idxColor++] = 0.2f;
rawColorArray[idxColor++] = 0.2f;
}
//Fill indexBufferData with data which holds the triangulation information (faces/tris)
QByteArray indexBufferData;
indexBufferData.resize(tMatTris.rows() * 3 * (int)sizeof(uint));
uint *rawIndexArray = reinterpret_cast<uint *>(indexBufferData.data());
int idxTris = 0;
for(int i = 0; i<tMatTris.rows(); i++) {
//Faces/Tris
rawIndexArray[idxTris++] = tMatTris(i,0);
rawIndexArray[idxTris++] = tMatTris(i,1);
rawIndexArray[idxTris++] = tMatTris(i,2);
}
//Set data to buffers
m_pVertexDataBuffer->setData(vertexBufferData);
m_pNormalDataBuffer->setData(normalBufferData);
m_pColorDataBuffer->setData(colorBufferData);
m_pIndexDataBuffer->setData(indexBufferData);
// Attributes
Qt3DRender::QAttribute *positionAttribute = new Qt3DRender::QAttribute();
positionAttribute->setAttributeType(Qt3DRender::QAttribute::VertexAttribute);
positionAttribute->setBuffer(m_pVertexDataBuffer);
positionAttribute->setDataType(Qt3DRender::QAttribute::Float);
positionAttribute->setDataSize(3);
positionAttribute->setByteOffset(0);
positionAttribute->setByteStride(3 * sizeof(float));
positionAttribute->setCount(tMatVert.rows());
positionAttribute->setName(Qt3DRender::QAttribute::defaultPositionAttributeName());
Qt3DRender::QAttribute *normalAttribute = new Qt3DRender::QAttribute();
normalAttribute->setAttributeType(Qt3DRender::QAttribute::VertexAttribute);
normalAttribute->setBuffer(m_pNormalDataBuffer);
normalAttribute->setDataType(Qt3DRender::QAttribute::Float);
normalAttribute->setDataSize(3);
normalAttribute->setByteOffset(0);
normalAttribute->setByteStride(3 * sizeof(float));
normalAttribute->setCount(tMatVert.rows());
normalAttribute->setName(Qt3DRender::QAttribute::defaultNormalAttributeName());
Qt3DRender::QAttribute *colorAttribute = new Qt3DRender::QAttribute();
colorAttribute->setAttributeType(Qt3DRender::QAttribute::VertexAttribute);
colorAttribute->setBuffer(m_pColorDataBuffer);
colorAttribute->setDataType(Qt3DRender::QAttribute::Float);
colorAttribute->setDataSize(3);
colorAttribute->setByteOffset(0);
colorAttribute->setByteStride(3 * sizeof(float));
colorAttribute->setCount(tMatVert.rows());
colorAttribute->setName(Qt3DRender::QAttribute::defaultColorAttributeName());
Qt3DRender::QAttribute *indexAttribute = new Qt3DRender::QAttribute();
indexAttribute->setAttributeType(Qt3DRender::QAttribute::IndexAttribute);
indexAttribute->setBuffer(m_pIndexDataBuffer);
indexAttribute->setDataType(Qt3DRender::QAttribute::UnsignedInt);
indexAttribute->setDataSize(1);
indexAttribute->setByteOffset(0);
indexAttribute->setByteStride(0);
indexAttribute->setCount(tMatTris.rows());
customGeometry->addAttribute(positionAttribute);
customGeometry->addAttribute(normalAttribute);
customGeometry->addAttribute(colorAttribute);
customGeometry->addAttribute(indexAttribute);
this->setInstanceCount(1);
this->setBaseVertex(0);
this->setBaseInstance(0);
this->setPrimitiveType(Qt3DRender::QGeometryRenderer::Triangles);
this->setGeometry(customGeometry);
this->setPrimitiveCount(tMatTris.rows()*3);
}