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Qt 利用飞机图片画五边形

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09/25
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最近练习Qt，需要一个飞机在屏幕上画五边形。虽然达到的效果不是非常的理想，但是勉强还是达到了效果，欢迎大家指正。用到的飞机图片如下。

第一步：初始化，在构造函数里面，把图片向左旋转18°

// 向左旋转18°
matrix.rotate(-);
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));

第二步：在定时器里面执行如下代码

switch(flag)
{
case :
{
if (num == )
{
num = ;
flag = ;
matrix.rotate();
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));
}
int x = ui.label->x() - ;
int y = ui.label->y() - ;
ui.label->move(x, y);
num++;
break;
}
case :
{
if (num == )
{
num = ;
flag = ;
matrix.rotate();
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));
}
int x = ui.label->x() + ;
int y = ui.label->y() - ;
ui.label->move(x, y);
num++;
break;
}
case :
{
if (num == )
{
num = ;
flag = ;
matrix.rotate();
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));
}
int x = ui.label->x() + ;
int y = ui.label->y() + ;
ui.label->move(x, y);
num++;
break;
}
case :
{
if (num == )
{
num = ;
flag = ;
matrix.rotate();
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));
}
int x = ui.label->x() - ;
int y = ui.label->y() + ;
ui.label->move(x, y);
num++;
break;
}
case :
{
if (num == )
{
num = ;
flag = ;
matrix.rotate();
ui.label->setPixmap(QPixmap("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\life.png").transformed(matrix, Qt::SmoothTransformation));
}
int x = ui.label->x() - ;
int y = ui.label->y();
ui.label->move(x, y);
num++;
break;
}
default:
{
break;
}
}