Unsolved QML SceneGraph Custom Item- Each line with different color
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Hi
I'm using the SceneGraph to write graph. Sample graph is provided. I would like to draw different color for each line. UpdatePainteNode(...) code is given here. Is this possible. I have tried with vertiexcolor etc. Not able to do this.
Scene_GraphImage.pngQSGNode *graph::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *) { qDebug() << Q_FUNC_INFO << " Updating the node" <<endl; WaveForm *n= static_cast<WaveForm *>(oldNode); QRectF rect = boundingRect(); if (!n) { n = new Graph(); n->m_wave1 = new Node(this->m_maxPoints); n->appendChildNode(n->m_wave1); n->m_wave1->redraw(rect,data()); m_waveForm = n; }else { n->m_wave1->redraw(rect,data()); } return n; }
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@dheerendra said in QML SceneGraph Custom Item- Each line with different color:
tePaintNode(
I think it's possible. I saw some this like this implemented to draw graphs with different colors.
May be this may be of some help using 'QSGVertexColorMaterial ' & 'QSGFlatColorMaterial ' with flag 'QSGNode::OwnsMaterial'[https://doc.qt.io/qt-5/qsgflatcolormaterial.html#details](For Reference)