void CubeMesh::createGeometry() {
QGLSceneNode* geometry;
QGLBuilder builder;
builder.newSection(QGL::NoSmoothing);
QGeometryData quad;
// QVector3DArray vertices = {
// 0.0, 0.0, 0.0,
// 0.0, 0.0, 1.0
// };
// quad.appendVertexArray();
geometry = builder.finalizedSceneNode();
geometry->setParent(this);
if (!d->sceneSet)
{
setScene(new CubeScene(d->topNode));
d->sceneSet = true;
}
}
/*!
\internal
*/
void SphereMesh::createGeometry()
{
// We cache a maximum of 10 levels of detail for lod animations.
// Create a new geometry node for this level of detail if necessary.
QGLSceneNode *geometry = d->lodGeometry.value(d->lod, 0);
if (!geometry) {
QGLBuilder builder;
builder.newSection(QGL::Faceted);
builder << QGLSphere(2.0f, d->lod);
geometry = builder.finalizedSceneNode();
geometry->setParent(this);
d->lodGeometry.insert(d->lod, geometry);
}
Q_ASSERT_X(geometry != 0, Q_FUNC_INFO, "Could not create/find geometry!");
if (d->currentSphere != geometry)
{
if (d->currentSphere)
d->topNode->removeNode(d->currentSphere);
d->topNode->addNode(geometry);
d->currentSphere = geometry;
}
// Set the radius as a scale on the modelview transformation.
// This way, we don't have to regenerate the geometry every
// frame if the radius is being animated.
if (d->radius != 1.0f)
{
if (!d->scale)
{
d->scale = new QGraphicsScale3D(d->topNode);
d->topNode->addTransform(d->scale);
}
if (d->scale->scale().x() != d->radius)
{
d->scale->setScale(QVector3D(d->radius, d->radius, d->radius));
}
}
else
{
// If there is already a scale set it to be the identity scale.
// This case is optimised for in QGraphicsScale. Removing it from
// the transform list is too expensive, especially if the size is
// being animated, and the next frame will recreate it.
if (d->scale)
d->scale->setScale(QVector3D(1, 1, 1));
}
// Also rotate the geometry into the correct axis orientation.
const QVector3D Y_AXIS = QVector3D(0, 1, 0); // for Qt::XAxis we rotate around Y
const QVector3D X_AXIS = QVector3D(1, 0, 0); // for Qt::YAxis we rotate around X
if (d->axis != Qt::ZAxis && !d->rot)
{
d->rot = new QGraphicsRotation3D(d->topNode);
d->topNode->addTransform(d->rot);
}
if (d->axis == Qt::XAxis && d->rot->axis().y() != Y_AXIS.y())
{
d->rot->setAxis(Y_AXIS);
d->rot->setAngle(90.0f);
}
else if (d->axis == Qt::YAxis && d->rot->axis().x() != X_AXIS.x())
{
d->rot->setAxis(X_AXIS);
d->rot->setAngle(-90.0f);
}
else if (d->axis == Qt::ZAxis && d->rot && d->rot->angle() != 0.0f)
{
d->rot->setAngle(0.0f);
d->rot->setAxis(QVector3D(0, 0, 0));
}
if (!d->sceneSet)
{
setScene(new SphereScene(d->topNode));
d->sceneSet = true;
}
}
/*!
\internal
*/
void CapsuleMesh::createGeometry(bool bForce)
{
// Create a new geometry node for this level of detail if necessary.
QGLSceneNode *geometry = 0;
QMap<int, QGLSceneNode *>::iterator It = d->lodGeometry.find(d->lod);
if (It != d->lodGeometry.end())
geometry = *It;
if (geometry && bForce) {
if (d->currentCapsule)
d->topNode->removeNode(d->currentCapsule);
d->currentCapsule = 0;
d->lodGeometry.erase(It);
geometry->setParent(0);
delete geometry;
geometry = 0;
}
if (!geometry) {
QGLBuilder builder;
// For the cylinder
int facets = 4 * (1 << d->lod);
int layers = (1 << d->lod) - 1;
// For the spheres
int divisions = d->lod;
// Sanity check - the height of the capsule must not be less than its
// diameter. A minimal capsule is a sphere - where diameter == height.
if (d->length < 2.0f * d->radius)
{
qWarning() << "Length of capsule must exceed its diameter"
<< " - correcting length.";
d->length = 2.0f * d->radius;
}
float diameter = d->radius+d->radius;
float cylinderHeight = d->length - diameter;
float offset = cylinderHeight/2.0f;
builder << QGL::Faceted;
QGLSceneNode *s = 0;
s = builder.newNode();
s->setObjectName(QLatin1String("Cylinder"));
builder << QGLCylinder(diameter, diameter, cylinderHeight,
facets, layers, false, false);
s = builder.newNode();
s->setObjectName(QLatin1String("LeftEndCap"));
builder << QGLDome(diameter, divisions, false);
QMatrix4x4 translateMatrix;
translateMatrix.setToIdentity();
translateMatrix.rotate(180.0f, 0.0f, 1.0f, 0.0f);
translateMatrix.translate(0.0f, 0.0f, offset);
builder.currentNode()->setLocalTransform(translateMatrix);
s = builder.newNode();
s->setObjectName(QLatin1String("RightEndCap"));
builder << QGLDome(diameter, divisions, false);
translateMatrix.setToIdentity();
translateMatrix.translate(0.0f, 0.0f, offset);
builder.currentNode()->setLocalTransform(translateMatrix);
geometry = builder.finalizedSceneNode();
geometry->setParent(this);
d->lodGeometry.insert(d->lod, geometry);
}
Q_ASSERT_X(geometry != 0, Q_FUNC_INFO, "Could not create/find geometry!");
if (d->currentCapsule != geometry)
{
if (d->currentCapsule)
d->topNode->removeNode(d->currentCapsule);
d->topNode->addNode(geometry);
d->currentCapsule = geometry;
}
if (!d->sceneSet)
{
setScene(new CapsuleScene(d->topNode));
d->sceneSet = true;
}
}