coordinates::coordinates( float size, float thickness ):
m_node( new QGLSceneNode() )
{
QGLBuilder builder;
builder << QGLCylinder( thickness, thickness, size, 12 );
QGLSceneNode* cylinder = builder.finalizedSceneNode();
cylinder->setPosition( QVector3D( 0, 0, 0.5 * size ) );
cylinder->setEffect( QGL::LitMaterial );
QGLBuilder arrowBuilder;
arrowBuilder << QGLCylinder( 0.01, 2 * thickness, size / 3, 12 );
QGLSceneNode* arrow = arrowBuilder.finalizedSceneNode();
arrow->setPosition( QVector3D( 0, 0, size ) );
arrow->setEffect( QGL::LitMaterial );
QGLSceneNode* x = new QGLSceneNode( m_node );
x->addNode(cylinder);
QMatrix4x4 matrix;
QQuaternion q = QQuaternion::fromAxisAndAngle(0.0f, 1.0f, 0.0f, 90.0f);
matrix.rotate( q );
x->setLocalTransform( matrix );
QGLSceneNode* xArrow = new QGLSceneNode( m_node );
xArrow->addNode( arrow );
xArrow->setLocalTransform( matrix );
QGLMaterial* xMaterial = new QGLMaterial;
xMaterial->setDiffuseColor( QColor( 255, 0, 0, 128 ) );
x->setMaterial( xMaterial );
xArrow->setMaterial( xMaterial );
QGLSceneNode* y = new QGLSceneNode( m_node );
y->addNode(cylinder);
q = QQuaternion::fromAxisAndAngle(1.0f, 0.0f, 0.0f, -90.0f);
matrix.rotate( q );
y->setLocalTransform( matrix );
QGLSceneNode* yArrow = new QGLSceneNode( m_node );
yArrow->addNode( arrow );
yArrow->setLocalTransform( matrix );
QGLMaterial* yMaterial = new QGLMaterial;
yMaterial->setDiffuseColor(Qt::green);
y->setMaterial( yMaterial );
QGLMaterial* yArrowMaterial = new QGLMaterial;
yArrowMaterial->setDiffuseColor( QColor( 0, 255, 0, 128 ) );
yArrow->setMaterial( yArrowMaterial );
QGLSceneNode* z = new QGLSceneNode( m_node );
z->addNode(cylinder);
QGLSceneNode* zArrow = new QGLSceneNode( m_node );
zArrow->addNode( arrow );
QGLMaterial* zMaterial = new QGLMaterial;
zMaterial->setDiffuseColor(Qt::blue);
z->setMaterial( zMaterial );
QGLMaterial* zArrowMaterial = new QGLMaterial;
zArrowMaterial->setDiffuseColor( QColor( 0, 0, 255, 128 ) );
zArrow->setMaterial( zArrowMaterial );
}
/* Creates an individual randomly positioned ball */
QGLSceneNode *ModelBall::createNode(QGLMaterial *material) {
const float defaultSize = 1.0;
const float positionX = -1.5;
const float positionY = 40.0;
const float randomPositionScale = 1000.0;
QGLBuilder builder;
QGLSceneNode *node;
builder.newNode();
builder << QGLSphere(defaultSize);
node = builder.finalizedSceneNode();
node->setMaterial(material);
node->setEffect(QGL::LitMaterial);
QGraphicsTranslation3D *trans = new QGraphicsTranslation3D();
node->addTransform(trans);
QGraphicsTranslation3D *transStart = new QGraphicsTranslation3D();
QVector3D *randomStart = new QVector3D(positionX +
randomPosition()/randomPositionScale,
positionY +
randomPosition()/randomPositionScale,
randomPosition()/randomPositionScale);
transStart->setTranslate(*randomStart);
node->addTransform(transStart);
return node;
}