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C++ QSGGeometry::setLineWidth方法代码示例

本文整理汇总了C++中QSGGeometry::setLineWidth方法的典型用法代码示例。如果您正苦于以下问题：C++ QSGGeometry::setLineWidth方法的具体用法？C++ QSGGeometry::setLineWidth怎么用？C++ QSGGeometry::setLineWidth使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QSGGeometry的用法示例。


在下文中一共展示了QSGGeometry::setLineWidth方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: QSGGeometry

QSGNode *PhosphorRender::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    if (!m_ybuffer) {
        return 0;
    }

    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;
    Material *material = 0;

    unsigned n_points;

    if (m_xbuffer) {
        n_points = std::min(m_xbuffer->size(), m_ybuffer->size());
    } else {
        n_points = m_ybuffer->countPointsBetween(m_xmin, m_xmax);
    }

    n_points = std::min(n_points,(unsigned) 65767);

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), n_points);
        geometry->setDrawingMode(GL_POINTS);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        material = new Material;
        material->setFlag(QSGMaterial::Blending);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(n_points);
        geometry->setLineWidth(m_pointSize);
        material = static_cast<Material*>(node->material());
    }

    QRectF bounds = boundingRect();

    material->transformation.setToIdentity();
    material->transformation.scale(bounds.width()/(m_xmax - m_xmin), bounds.height()/(m_ymin - m_ymax));
    material->transformation.translate(-m_xmin, -m_ymax);

    material->pointSize = m_pointSize;
    material->color = m_color;

    auto verticies = geometry->vertexDataAsPoint2D();
    if (m_xbuffer) {
        for (unsigned i=0; i<n_points; i++) {
            verticies[i].set(m_xbuffer->get(i), m_ybuffer->get(i));
        }
    } else {
        m_ybuffer->toVertexData(m_xmin, m_xmax, verticies, n_points);
    }
    node->markDirty(QSGNode::DirtyGeometry | QSGNode::DirtyMaterial);

    return node;
}
开发者ID:analogdevicesinc，项目名称:Pixelpulse2，代码行数:59，代码来源:PhosphorRender.cpp

示例2: QSGGeometry

//! [4]
QSGNode *BezierCurve::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;

    if (!oldNode) {
        node = new QSGGeometryNode;
//! [4] //! [5]
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), m_segmentCount);
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
//! [5] //! [6]
        QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
        material->setColor(QColor(255, 0, 0));
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
//! [6] //! [7]
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(m_segmentCount);
    }
//! [7]

//! [8]
    QRectF bounds = boundingRect();
    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
    for (int i = 0; i < m_segmentCount; ++i) {
        qreal t = i / qreal(m_segmentCount - 1);
        qreal invt = 1 - t;

        QPointF pos = invt * invt * invt * m_p1
                    + 3 * invt * invt * t * m_p2
                    + 3 * invt * t * t * m_p3
                    + t * t * t * m_p4;

        float x = bounds.x() + pos.x() * bounds.width();
        float y = bounds.y() + pos.y() * bounds.height();

        vertices[i].set(x, y);
    }
    node->markDirty(QSGNode::DirtyGeometry);
//! [8]


//! [9]
    return node;
}
开发者ID:OniLink，项目名称:Qt5-Rehost，代码行数:51，代码来源:beziercurve.cpp

示例3: DrawLine

void SceneGraphDeviceContext::DrawLine(int x1, int y1, int x2, int y2)
{
    vrv::Pen currentPen = m_penStack.top();

    QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 2);
    geometry->setDrawingMode(GL_LINES);
    geometry->setLineWidth(translate(currentPen.GetWidth()));
    geometry->vertexDataAsPoint2D()[0].set(translateX(x1), translateY(y1));
    geometry->vertexDataAsPoint2D()[1].set(translateX(x2), translateY(y2));

    QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
    material->setColor(static_cast<QRgb>(currentPen.GetColour()));

    QSGGeometryNode *node = new QSGGeometryNode;
    node->setGeometry(geometry);
    node->setFlag(QSGNode::OwnsGeometry);
    node->setMaterial(material);
    node->setFlag(QSGNode::OwnsMaterial);

    AddGeometryNode(node);
}
开发者ID:rettinghaus，项目名称:verovio，代码行数:21，代码来源:scenegraphdevicecontext.cpp

示例4: p

QSGNode *QPScrollingCurve::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
{
    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;
    QSGFlatColorMaterial *material = 0;

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), m_data.size());
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        material = new QSGFlatColorMaterial;
        material->setColor(m_color);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
        node->markDirty(QSGNode::DirtyMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(m_data.size());
        material = static_cast<QSGFlatColorMaterial*>(node->material());
        if (material->color() != m_color) {
            material->setColor(m_color);
            node->markDirty(QSGNode::DirtyMaterial);
        }
    }

    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();

    for (uint i = 0; i < m_data.size(); ++i) {
        QPointF p(i, m_data[i]);
        vertices[i].set(p.x(), p.y());
    }

    node->markDirty(QSGNode::DirtyGeometry);

    return node;
}
开发者ID:UbuntuChina，项目名称:sensorapp，代码行数:40，代码来源:qpscrollingcurve.cpp

示例5: drawRect

QSGNode* drawRect(const QRect& rect, QSGNode* oldNode)
{
    QSGGeometryNode* node;
    if (oldNode == nullptr)
    {
        node = new QSGGeometryNode;

        QSGGeometry* geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 8);
        geometry->setDrawingMode(GL_LINES);
        geometry->setLineWidth(1);

        QSGFlatColorMaterial* material = new QSGFlatColorMaterial;
        material->setColor(QGuiApplication::palette().color(QPalette::Normal, QPalette::WindowText));

        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    }
    else
    {
        node = static_cast<QSGGeometryNode*>(oldNode);
    }

    QSGGeometry* geometry = node->geometry();

    // FIXME: check if these really have to be updated
    geometry->vertexDataAsPoint2D()[0].set(rect.topLeft().x(), rect.topLeft().y());
    geometry->vertexDataAsPoint2D()[1].set(rect.topRight().x(), rect.topRight().y());
    geometry->vertexDataAsPoint2D()[2].set(rect.topRight().x(), rect.topRight().y());
    geometry->vertexDataAsPoint2D()[3].set(rect.bottomRight().x(), rect.bottomRight().y());
    geometry->vertexDataAsPoint2D()[4].set(rect.bottomRight().x(), rect.bottomRight().y());
    geometry->vertexDataAsPoint2D()[5].set(rect.bottomLeft().x(), rect.bottomLeft().y());
    geometry->vertexDataAsPoint2D()[6].set(rect.bottomLeft().x(), rect.bottomLeft().y());
    geometry->vertexDataAsPoint2D()[7].set(rect.topLeft().x(), rect.topLeft().y());

    node->markDirty(QSGNode::DirtyGeometry);

    return node;
}
开发者ID:denesb，项目名称:warmonger，代码行数:40，代码来源:MapUtil.cpp

示例6: QSGGeometry

QSGGeometry *NotesGeometry::createGeometry(QVector<int> &ids, const TimelineModel *model,
                                           const TimelineRenderState *parentState, bool collapsed)
{
    float rowHeight = TimelineModel::defaultRowHeight();
    QSGGeometry *geometry = new QSGGeometry(point2DWithDistanceFromTop(),
                                            ids.count() * 2);
    geometry->setDrawingMode(GL_LINES);
    geometry->setLineWidth(3);
    Point2DWithDistanceFromTop *v =
            static_cast<Point2DWithDistanceFromTop *>(geometry->vertexData());
    for (int i = 0; i < ids.count(); ++i) {
        int timelineIndex = ids[i];
        float horizontalCenter = ((model->startTime(timelineIndex) +
                                   model->endTime(timelineIndex)) / (qint64)2 -
                                  parentState->start()) * parentState->scale();
        float verticalStart = (collapsed ? (model->collapsedRow(timelineIndex) + 0.1) : 0.1) *
                rowHeight;
        float verticalEnd = verticalStart + 0.8 * rowHeight;
        v[i * 2].set(horizontalCenter, verticalStart, 0);
        v[i * 2 + 1].set(horizontalCenter, verticalEnd, 1);
    }
    return geometry;
}
开发者ID:C-sjia，项目名称:qt-creator，代码行数:23，代码来源:timelinenotesrenderpass.cpp

示例7: boundingRect

QSGNode * DataSetView::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
	if (width() <= 0 || height() <= 0) {
		delete oldNode;
		return 0;
	}

	//if(recalculateCellSizes) calculateCellContentSizes();

	const QRectF rect = boundingRect();


	const int linesPerNode = 1000; //Or something? should be multiple of 2 though

	if(!oldNode)
		oldNode = new QSGNode();

	QSGGeometryNode * currentNode = static_cast<QSGGeometryNode*>(oldNode->firstChild());


	for(int lineIndex=0; lineIndex<_lines.size();)
	{
		if(currentNode == NULL)
		{
			currentNode = new QSGGeometryNode;

			currentNode->setFlag(QSGNode::OwnsMaterial, false);
			currentNode->setFlag(QSGNode::OwnsGeometry, true);
			currentNode->setMaterial(&material);

			oldNode->appendChildNode(currentNode);
		}

		int geomSize = std::min(linesPerNode, (int)(_lines.size() - lineIndex));
		geomSize *= 2;

		QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), geomSize);
		geometry->setLineWidth(1);
		geometry->setDrawingMode(GL_LINES);
		QSGGeometry::Point2D *points = geometry->vertexDataAsPoint2D();

		for(int geomIndex=0; geomIndex<geomSize; geomIndex+=2)
		{
			points[geomIndex  ].x = _lines[lineIndex].first.x() + rect.left();
			points[geomIndex  ].y = _lines[lineIndex].first.y() + rect.top();
			points[geomIndex+1].x = _lines[lineIndex].second.x() + rect.left();
			points[geomIndex+1].y = _lines[lineIndex].second.y() + rect.top();
			lineIndex++;
		}

		currentNode->setGeometry(geometry);

		currentNode = static_cast<QSGGeometryNode*>(currentNode->nextSibling());
	}


	std::queue<QSGGeometryNode*> killThem;

	while(currentNode != NULL) //superfluous children! Lets kill em
	{
		killThem.push(currentNode);
		currentNode = static_cast<QSGGeometryNode*>(currentNode->nextSibling());
	}

	while(killThem.size() > 0)
	{
		QSGGeometryNode * childToDie = killThem.front();
		killThem.pop();

		delete childToDie;
	}


	return oldNode;
}
开发者ID:akashrajkn，项目名称:jasp-desktop，代码行数:75，代码来源:datasetview.cpp

示例8: QSGGeometry

QSGNode *GraphConnection::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    if (m_source == m_sink)
        return oldNode;

    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;

    QPointF p1, p2, p3, p4;

    p1.setX(m_source.x());
    p1.setY(m_source.y());
    p4.setX(m_sink.x());
    p4.setY(m_sink.y());

    p2.setX(p1.x());
    p3.setX(p4.x());
    if (p1.y() < p4.y()) {
        p2.setY(p1.y() * 0.75 + p4.y() * 0.25);
        p3.setY(p4.y() * 0.75 + p1.y() * 0.25);
    } else {
        p2.setY(p1.y() - (p4.y()-p1.y())*0.25);
        p3.setY(p4.y() + (p4.y()-p1.y())*0.25);
    }

    // quick 'n' dirty estimation of bezier length
    // http://steve.hollasch.net/cgindex/curves/cbezarclen.html
    qreal l1 = (QVector2D(p2)-QVector2D(p1)).length() +
               (QVector2D(p3)-QVector2D(p2)).length() +
               (QVector2D(p4)-QVector2D(p3)).length();
    qreal l0 = (QVector2D(p4)-QVector2D(p1)).length();
    qreal length = 0.5*l0 + 0.5*l1;

    int segmentCount = length;

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), segmentCount);
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
        material->setColor(QColor(0, 0, 0));
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(segmentCount);
    }

    QRectF bounds = boundingRect();
    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
    for (int i = 0; i < segmentCount; ++i) {
        qreal t = i / qreal(segmentCount - 1);
        qreal invt = 1 - t;

        // Bezier
        QPointF pos = invt * invt * invt * p1
                    + 3 * invt * invt * t * p2
                    + 3 * invt * t * t * p3
                    + t * t * t * p4;

        float x = pos.x();
        float y = pos.y();

        vertices[i].set(x, y);
    }

    return node;
}
开发者ID:mjmvisser，项目名称:pug，代码行数:72，代码来源:graphconnection.cpp


注：本文中的QSGGeometry::setLineWidth方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。