qt实现透视旋转

来源：互联网发布：快速排序算法排序过程编辑：程序博客网时间：2024/05/16 06:20

Panel::keyPressEvent(QKeyEvent *event)

{

qDebug("event >>>>>>>>>>>>>>>modifier %x\n",event->modifiers());

QTransform transform ;

static int degree = 0;

static int zdegree = 0;

if (event->modifiers()&Qt::ControlModifier)

{

if (event->key() == Qt::Key_Up)

degree+= 10;

else if (event->key() == Qt::Key_Down)

{

degree -= 10;

if (degree < 0)

degree += 360;

}

else if (event->key() == Qt::Key_Right)

{

zdegree += 10;

}

else if (event->key() == Qt::Key_Left)

{

zdegree -= 10;

if (zdegree < 0)

zdegree += 360;

}

degree%= 360;

zdegree%= 360;

transform.translate(scene->sceneRect().x()+scene->sceneRect().width()/2,scene->sceneRect().y()+scene->sceneRect().height()/2);

transform.rotate(degree, Qt::XAxis);

transform.rotate(zdegree, Qt::ZAxis);

transform.translate(-1*(scene->sceneRect().x()+scene->sceneRect().width()/2),-1*(scene->sceneRect().y()+scene->sceneRect().height()/2));

baseItem->setTransform(transform);

}