void PEQGraph::_drawHumpOutline(QSGNode * parentNode, int n, QColor color) {
//Solid Outline
QSGGeometryNode * lineNode = new QSGGeometryNode();
QSGGeometry * lineGeom = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), (HorizontalDivisions));
QSGFlatColorMaterial *material2 = new QSGFlatColorMaterial;
material2->setColor(color);
material2->setFlag(QSGMaterial::Blending);
lineNode->setMaterial(material2);
lineNode->setFlag(QSGNode::OwnsGeometry);
lineNode->setFlag(QSGNode::OwnedByParent);
lineNode->setFlag(QSGNode::OwnsMaterial);
lineGeom->setDrawingMode(GL_LINE_STRIP);
glLineWidth(2.0f);
QSGGeometry::Point2D* point2 = lineGeom->vertexDataAsPoint2D();
float left = graphToNodeX(xAxis.min);
float width = graphToNodeX(xAxis.max) - graphToNodeX(xAxis.min);
float stride = width / HorizontalDivisions;
for (int i = 0; i < HorizontalDivisions; i++) {
float x1 = left + (i)*stride;
float y1 = graphToNodeY(computedData[i][n]);
point2->set(x1, y1);
point2++;
}
lineNode->setGeometry(lineGeom);
parentNode->appendChildNode(lineNode);
}
void PEQGraph::_drawHumpSolid(QSGNode * parentNode, int n, QColor color) {
//Transparent shaded part//
QSGGeometryNode * solidNode = new QSGGeometryNode();
QSGGeometry * solidGeom = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 2 * (HorizontalDivisions + 1));
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(color);
material->setFlag(QSGMaterial::Blending);
solidNode->setMaterial(material);
solidNode->setFlag(QSGNode::OwnsGeometry);
solidNode->setFlag(QSGNode::OwnedByParent);
solidNode->setFlag(QSGNode::OwnsMaterial);
solidGeom->setDrawingMode(GL_TRIANGLE_STRIP);
QSGGeometry::Point2D* point = solidGeom->vertexDataAsPoint2D();
float left = graphToNodeX(xAxis.min);
float mid = graphToNodeY(0);
float width = graphToNodeX(xAxis.max) - graphToNodeX(xAxis.min);
float stride = width / HorizontalDivisions;
for (int i = 0; i < HorizontalDivisions + 1; i++) {
point->set(left + i*stride, mid);
point++;
point->set(left + i*stride, graphToNodeY(computedData[i][n]));
point++;
}
solidNode->setGeometry(solidGeom);
parentNode->appendChildNode(solidNode);
}
/*
* The function hardcodes a fixed set of grid lines and scales
* those to the bounding rect.
*/
void GridNode::setRect(const QRectF &rect)
{
int vCount = int((rect.width() - 1) / GRID_SIZE);
int hCount = int((rect.height() - 1) / GRID_SIZE);
int lineCount = vCount + hCount;
QSGGeometry *g = geometry();
g->allocate(lineCount * 2);
float x = rect.x();
float y = rect.y();
float w = rect.width();
float h = rect.height();
QSGGeometry::Point2D *v = g->vertexDataAsPoint2D();
// Then write the vertical lines
for (int i=0; i<vCount; ++i) {
float dx = (i + 1) * GRID_SIZE;
v[i*2].set(dx, y);
v[i*2+1].set(dx, y + h);
}
v += vCount * 2;
// Then write the horizontal lines
for (int i=0; i<hCount; ++i) {
float dy = (i + 1) * GRID_SIZE;
v[i*2].set(x, dy);
v[i*2+1].set(x + w, dy);
}
// Tell the scenegraph we updated the geometry..
markDirty(QSGNode::DirtyGeometry);
}
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;
}
void SceneGraphDeviceContext::DrawPolygon(int n, vrv::Point points[], int xoffset, int yoffset, int)
{
// Note: No support for vertex antialiasing. Use a top-level QQuickView with multisample antialiasing.
// TODO: Add vertex antialiasing, refer to
// 1) Qt sources for "void QSGBasicInternalRectangleNode::updateGeometry()" in
// qtdeclarative/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp
// 2) https://stackoverflow.com/questions/28125425/smooth-painting-in-custom-qml-element
// TODO: This function only works for convex polygons. At the moment verovio calls this function only with n = 4.
// Maybe this function should be renamed to DrawConvexPolygon
vrv::Pen currentPen = m_penStack.top();
QSGGeometry *geometry;
geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), n);
geometry->setDrawingMode(QSGGeometry::DrawTriangleStrip);
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(static_cast<QRgb>(currentPen.GetColour()));
// Reorder points so that they can be drawn with DrawTriangleStrip.
int counter1 = 0;
int counter2 = n - 1;
for (int i = 0; i < n; i++) {
if (i % 2 == 0) {
geometry->vertexDataAsPoint2D()[i].set(
translateX(points[counter1].x + xoffset), translateY(points[counter1].y + yoffset));
counter1++;
}
else {
geometry->vertexDataAsPoint2D()[i].set(
translateX(points[counter2].x + xoffset), translateY(points[counter2].y + yoffset));
counter2--;
}
}
QSGGeometryNode *node = new QSGGeometryNode;
node->setGeometry(geometry);
node->setFlag(QSGNode::OwnsGeometry);
node->setMaterial(material);
node->setFlag(QSGNode::OwnsMaterial);
AddGeometryNode(node);
}
QSGNode * QQuickLineItem::updatePaintNode(QSGNode *prev_node,
UpdatePaintNodeData *upd_data)
{
Q_UNUSED(upd_data);
QSGGeometryNode * node = static_cast<QSGGeometryNode*>(prev_node);
QSGGeometry * geometry = NULL;
QSGFlatColorMaterial * material = NULL;
if(!node) {
// http://qt-project.org/doc/qt-5/qsggeometrynode.html
node = new QSGGeometryNode;
geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(),4);
geometry->setDrawingMode(GL_TRIANGLE_STRIP);
node->setGeometry(geometry);
node->setFlag(QSGNode::OwnsGeometry);
material = new QSGFlatColorMaterial;
material->setColor(m_color);
node->setMaterial(material);
node->setFlag(QSGNode::OwnsMaterial);
}
else {
geometry = node->geometry();
geometry->allocate(4); // we have to call allocate to invalidate
// the older vertex buffer
material = static_cast<QSGFlatColorMaterial*>(node->material());
}
// geometry
std::vector<QPointF> list_vx;
if(!calcTriStrip(list_vx)) {
list_vx.clear();
list_vx.push_back(QPointF(0,0));
list_vx.push_back(QPointF(0,0));
list_vx.push_back(QPointF(0,0));
list_vx.push_back(QPointF(0,0));
}
QSGGeometry::Point2D * vertices =
geometry->vertexDataAsPoint2D();
for(size_t i=0; i < list_vx.size(); i++) {
vertices[i].set(list_vx[i].x(),
list_vx[i].y());
}
node->markDirty(QSGNode::DirtyGeometry);
// material
material->setColor(m_color);
node->markDirty(QSGNode::DirtyMaterial);
return node;
}
void SceneGraphDeviceContext::DrawComplexBezierPath(vrv::Point bezier1[4], vrv::Point bezier2[4])
{
// Note: No support for vertex antialiasing. Use a top-level QQuickView with multisample antialiasing.
// TODO: Add vertex antialiasing, refer to
// 1) Qt sources for "void QSGBasicInternalRectangleNode::updateGeometry()" in
// qtdeclarative/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp
// 2) https://stackoverflow.com/questions/28125425/smooth-painting-in-custom-qml-element
vrv::Pen currentPen = m_penStack.top();
int segmentCount = 16;
QSGGeometryNode *node = new QSGGeometryNode;
QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 2 * segmentCount);
geometry->setDrawingMode(QSGGeometry::DrawTriangleStrip);
node->setGeometry(geometry);
node->setFlag(QSGNode::OwnsGeometry);
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(static_cast<QRgb>(currentPen.GetColour()));
node->setMaterial(material);
node->setFlag(QSGNode::OwnsMaterial);
auto calculateCubicBezierPoint = [](vrv::Point p[4], float t) -> std::tuple<float, float> {
auto invt = 1 - t;
auto x = invt * invt * invt * p[0].x + 3 * invt * invt * t * p[1].x + 3 * invt * t * t * p[2].x
+ t * t * t * p[3].x;
auto y = invt * invt * invt * p[0].y + 3 * invt * invt * t * p[1].y + 3 * invt * t * t * p[2].y
+ t * t * t * p[3].y;
return std::make_tuple(x, y);
};
// This loop calculates the bezier points for the inner and the outer line and add them as vertices. The list of
// vertices is built so that points from the inner and outer line are alternating. This allows to draw a filled area
// with DrawTriangleStrip.
QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
for (int i = 0; i < segmentCount; ++i) {
float bezierPointX = 0;
float bezierPointY = 0;
float currentSegment = i / static_cast<float>(segmentCount - 1);
// Calculate bezier point on bezier1
std::tie(bezierPointX, bezierPointY) = calculateCubicBezierPoint(bezier1, currentSegment);
vertices[i * 2].set(translateX(bezierPointX), translateY(bezierPointY));
// Calculate bezier point on bezier2
std::tie(bezierPointX, bezierPointY) = calculateCubicBezierPoint(bezier2, currentSegment);
vertices[i * 2 + 1].set(translateX(bezierPointX), translateY(bezierPointY));
}
node->markDirty(QSGNode::DirtyGeometry);
AddGeometryNode(node);
}
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;
}
//! [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;
}
void DynamicController::drawGateCompressor(QSGNode * rootNode) {
if (knobs.count() == 0) {
return;
}
//Update knobs
if (!this->simple()) {
QObject * gateKnob = knobs[0];
QObject * compThreshKnob = knobs[1];
QObject * compRatioKnob = knobs[2];
gateKnob->setProperty("x", graphToNodeX(_tempModel["gatex"]));
gateKnob->setProperty("y", graphToNodeY(_tempModel["gatey"]));
compThreshKnob->setProperty("x", graphToNodeX(_tempModel["compx"]));
compThreshKnob->setProperty("y", graphToNodeY(_tempModel["compy"]));
compRatioKnob->setProperty("x", graphToNodeX(xAxis.max));
compRatioKnob->setProperty("y", graphToNodeY(_tempModel["compy"]) * (1 - _tempModel["ratio"]));
}
QSGGeometryNode * lineNode = new QSGGeometryNode();
QSGGeometry * lineGeom = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), (4));
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(this->curveColor());
material->setFlag(QSGMaterial::Blending);
lineNode->setMaterial(material);
lineNode->setFlag(QSGNode::OwnsGeometry);
lineNode->setFlag(QSGNode::OwnedByParent);
lineNode->setFlag(QSGNode::OwnsMaterial);
lineGeom->setDrawingMode(GL_LINE_STRIP);
glLineWidth(2.0f);
QSGGeometry::Point2D* points = lineGeom->vertexDataAsPoint2D();
QRectF bounds = boundingRect();
points->set(graphToNodeX(_tempModel["gatex"]), bounds.bottom()); points++;
points->set(graphToNodeX(_tempModel["gatex"]), graphToNodeY(_tempModel["gatey"])); points++;
points->set(graphToNodeX(_tempModel["compx"]), graphToNodeY(_tempModel["compy"])); points++;
points->set(graphToNodeX(xAxis.max), graphToNodeY(_tempModel["compy"]) * (1 - _tempModel["ratio"])); points++;
lineNode->setGeometry(lineGeom);
rootNode->appendChildNode(lineNode);
}
void DynamicController::drawCompressor(QSGNode * rootNode) {
//Update knobs
if (!this->simple()) {
QObject * threshKnob = knobs[0];
QObject * ratKnob = knobs[1];
threshKnob->setProperty("x", graphToNodeX(_tempModel["compx"]));
threshKnob->setProperty("y", graphToNodeY(_tempModel["compy"]));
ratKnob->setProperty("x", graphToNodeX(yAxis.max));
ratKnob->setProperty("y", graphToNodeY(_tempModel["compy"]) * (1 - _tempModel["ratio"]));
}
QSGGeometryNode * lineNode = new QSGGeometryNode();
QSGGeometry * lineGeom = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), (3));
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(this->curveColor());
material->setFlag(QSGMaterial::Blending);
lineNode->setMaterial(material);
lineNode->setFlag(QSGNode::OwnsGeometry);
lineNode->setFlag(QSGNode::OwnedByParent);
lineNode->setFlag(QSGNode::OwnsMaterial);
lineGeom->setDrawingMode(GL_LINE_STRIP);
glLineWidth(2.0f);
QSGGeometry::Point2D* points = lineGeom->vertexDataAsPoint2D();
QRectF bounds = boundingRect();
points->set(bounds.left(), bounds.bottom()); points++;
for (int i = 0; i < 2; i++) {
QQuickItem * q = qobject_cast<QQuickItem*>(knobs[i]);
points->set(q->x(), q->y());
points++;
}
lineNode->setGeometry(lineGeom);
rootNode->appendChildNode(lineNode);
}
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);
}
void VideoNode::updateGeometry(const PaintAreas & areas)
{
QSGGeometry *g = geometry();
if (m_materialType == MaterialTypeVideo) {
if (!m_validGeometry)
g = new QSGGeometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4);
QSGGeometry::TexturedPoint2D *v = g->vertexDataAsTexturedPoint2D();
// Set geometry first
setGeom(v + 0, areas.videoArea.topLeft());
setGeom(v + 1, areas.videoArea.bottomLeft());
setGeom(v + 2, areas.videoArea.topRight());
setGeom(v + 3, areas.videoArea.bottomRight());
// and then texture coordinates
setTex(v + 0, areas.sourceRect.topLeft());
setTex(v + 1, areas.sourceRect.bottomLeft());
setTex(v + 2, areas.sourceRect.topRight());
setTex(v + 3, areas.sourceRect.bottomRight());
} else {
if (!m_validGeometry)
g = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 4);
QSGGeometry::Point2D *v = g->vertexDataAsPoint2D();
setGeom(v + 0, areas.videoArea.topLeft());
setGeom(v + 1, areas.videoArea.bottomLeft());
setGeom(v + 2, areas.videoArea.topRight());
setGeom(v + 3, areas.videoArea.bottomRight());
}
if (!m_validGeometry) {
setGeometry(g);
m_validGeometry = true;
}
markDirty(DirtyGeometry);
}
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;
}
void SceneGraphDeviceContext::DrawCircle(int x, int y, int radius)
{
// Note: No support for vertex antialiasing. Use a top-level QQuickView with multisample antialiasing.
// TODO: Add vertex antialiasing, refer to
// 1) Qt sources for "void QSGBasicInternalRectangleNode::updateGeometry()" in
// qtdeclarative/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp
// 2) https://stackoverflow.com/questions/28125425/smooth-painting-in-custom-qml-element
vrv::Pen currentPen = m_penStack.top();
int segmentCount = 16;
QSGGeometryNode *node = new QSGGeometryNode();
QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), segmentCount);
geometry->setDrawingMode(QSGGeometry::DrawTriangleFan);
node->setGeometry(geometry);
node->setFlag(QSGNode::OwnsGeometry);
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(static_cast<QRgb>(currentPen.GetColour()));
node->setMaterial(material);
node->setFlag(QSGNode::OwnsMaterial);
// This draws individual triangles from the first point (center) to every outer point by using DrawTriangleFan.
QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
int numPoints = geometry->vertexCount();
vertices[0].x = translateX(x);
vertices[0].y = translateY(y);
for (int i = 1; i < numPoints; ++i) {
double theta = i * 2 * M_PI / (numPoints - 2);
vertices[i].x = translateX(x + radius * static_cast<float>(std::cos(theta)));
vertices[i].y = translateY(y - radius * static_cast<float>(std::sin(theta)));
}
node->markDirty(QSGNode::DirtyGeometry);
AddGeometryNode(node);
}
void DynamicController::drawGate(QSGNode * rootNode) {
//Update knobs
if (!this->simple()) {
QObject * gateKnob = knobs[0];
gateKnob->setProperty("x", graphToNodeX(_tempModel["gatex"]));
gateKnob->setProperty("y", graphToNodeY(_tempModel["gatey"]));
}
QSGGeometryNode * lineNode = new QSGGeometryNode();
QSGGeometry * lineGeom = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), (3));
QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
material->setColor(this->curveColor());
material->setFlag(QSGMaterial::Blending);
lineNode->setMaterial(material);
lineNode->setFlag(QSGNode::OwnsGeometry);
lineNode->setFlag(QSGNode::OwnedByParent);
lineNode->setFlag(QSGNode::OwnsMaterial);
lineGeom->setDrawingMode(GL_LINE_STRIP);
glLineWidth(2.0f);
QSGGeometry::Point2D* points = lineGeom->vertexDataAsPoint2D();
QRectF bounds = boundingRect();
points->set(graphToNodeX(_tempModel["gatex"]), bounds.bottom()); points++;
points->set(graphToNodeX(_tempModel["gatex"]), graphToNodeX(_tempModel["gatey"])); points++;
points->set(bounds.right(), bounds.top()); points++;
lineNode->setGeometry(lineGeom);
rootNode->appendChildNode(lineNode);
}
QSGNode* NodeConnectionLines::updatePaintNode(QSGNode* oldNode, UpdatePaintNodeData*) {
if (!m_nodeObject) return nullptr;
const QVector<QPointer<NodeBase>>& connectedNodes = m_nodeObject->getConnectedNodes();
int connectionCount = connectedNodes.size();
// -------------------- Prepare QSG Nodes:
QSGNode* parentNode = oldNode;
if (!oldNode) {
parentNode = new QSGNode();
} else {
// update color in case it changed:
// FIXME: is there a more efficient way to do this?
for (int i=0; i<parentNode->childCount(); ++i) {
QSGGeometryNode* childNode = static_cast<QSGGeometryNode*>(parentNode->childAtIndex(i));
if (!childNode) continue;
QSGFlatColorMaterial* material = static_cast<QSGFlatColorMaterial*>(childNode->material());
if (!material) continue;
material->setColor(m_color);
}
}
// adapt child count:
int childCount = parentNode->childCount();
if (childCount < connectionCount) {
for (int i=0; i<(connectionCount - childCount); ++i) {
QSGGeometryNode* node = new QSGGeometryNode;
QSGGeometry* geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 3);
geometry->setDrawingMode(GL_TRIANGLE_STRIP);
node->setGeometry(geometry);
node->setFlag(QSGNode::OwnsGeometry);
QSGFlatColorMaterial* material = new QSGFlatColorMaterial;
material->setColor(m_color);
node->setMaterial(material);
node->setFlag(QSGNode::OwnsMaterial);
parentNode->appendChildNode(node);
}
} else if (childCount > connectionCount) {
for (int i=0; i<(childCount - connectionCount); ++i) {
parentNode->removeChildNode(parentNode->childAtIndex(0));
}
}
Q_ASSERT(parentNode->childCount() == connectionCount);
// calculate common start point:
const QPointF p0(width(), height() / 2);
double widthOffset = m_lineWidth / 2;
//const QPointF posInScene = mapToScene(QPointF(0, 0));
for (int i=0; i<connectionCount; ++i) {
NodeBase* otherNode = connectedNodes[i];
if (!otherNode) continue;
QQuickItem* otherGuiItem = otherNode->getGuiItem();
if (!otherGuiItem) continue;
const QPointF p3 = mapFromItem(otherGuiItem, QPointF(-otherGuiItem->width() / 2, otherGuiItem->height() / 2));
int handleLength = std::max(50, std::min(int(p3.x() - p0.x()), 80));
const QPointF p1(p0.x() + handleLength, p0.y());
const QPointF p2(p3.x() - handleLength, p3.y());
// calculate reasonable segment count:
int segmentCount = qMax(16.0, qMin(qAbs(p3.y() - p0.y()) / 25, 50.0));
int verticesCount = segmentCount * 2;
QSGGeometryNode* qsgNode = static_cast<QSGGeometryNode*>(parentNode->childAtIndex(i));
if (!qsgNode) continue;
QSGGeometry* geometry = qsgNode->geometry();
if (!geometry) continue;
geometry->allocate(verticesCount);
QSGGeometry::Point2D* vertices = geometry->vertexDataAsPoint2D();
// triangulate cubic bezier curve:
for (int i = 0; i < segmentCount; ++i) {
// t is the position on the line:
const qreal t = i / qreal(segmentCount - 1);
// pos is the point on the curve at "t":
const QPointF pos = calculateBezierPoint(t, p0, p1, p2, p3);
// normal is the normal vector at that point
const QPointF normal = normalFromTangent(calculateBezierTangent(t, p0, p1, p2, p3));
// first is a point offsetted in the normal direction by lineWidth / 2 from pos
const QPointF first = pos - normal * widthOffset;
// ssecond is a point offsetted in the negative normal direction by lineWidth / 2 from pos
const QPointF second = pos + normal * widthOffset;
// add first and second as vertices to this geometry:
vertices[i*2].set(first.x(), first.y());
vertices[i*2+1].set(second.x(), second.y());
}
// tell Scene Graph that this items needs to be drawn:
qsgNode->markDirty(QSGNode::DirtyGeometry);
}
return parentNode;
}
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;
}
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;
}
