C#开发Halcon实现缩放、平移功能代码

绝地武士 · 发表于 2020-2-24 17:27:52

//缩放图像
private void hWindowControl1_HMouseWheel(object sender, HMouseEventArgs e)
{
HTuple Zoom, Row, Col, Button;
HTuple Row0, Column0, Row00, Column00, Ht, Wt, r1, c1, r2, c2;
if (e.Delta > 0)
{
Zoom = 1.5;
}
else
{
Zoom = 0.5;
}
HOperatorSet.GetMposition(WindowID, out Row, out Col, out Button);
HOperatorSet.GetPart(WindowID, out Row0, out Column0, out Row00, out Column00);
Ht = Row00 - Row0;
Wt = Column00 - Column0;
if (Ht * Wt < 32000 * 32000 || Zoom == 1.5)//普通版halcon能处理的图像最大尺寸是32K*32K。如果无限缩小原图像，导致显示的图像超出限制，则会造成程序崩溃
{
r1 = (Row0 + ((1 - (1.0 / Zoom)) * (Row - Row0)));
c1 = (Column0 + ((1 - (1.0 / Zoom)) * (Col - Column0)));
r2 = r1 + (Ht / Zoom);
c2 = c1 + (Wt / Zoom);
HOperatorSet.SetPart(WindowID, r1, c1, r2, c2);
HOperatorSet.ClearWindow(WindowID);
HOperatorSet.DispObj(ho_image, WindowID);
}
}
//鼠标按下，记录当前坐标值
private void hWindowControl1_HMouseDown(object sender, HMouseEventArgs e)
{
HTuple Row, Column, Button;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button);
RowDown = Row; //鼠标按下时的行坐标
ColDown = Column; //鼠标按下时的列坐标
}
//鼠标抬起，实现图像移动
private void hWindowControl1_HMouseUp(object sender, HMouseEventArgs e)
{
HTuple row1, col1, row2, col2,Row, Column, Button;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button);
double RowMove = Row - RowDown; //鼠标弹起时的行坐标减去按下时的行坐标，得到行坐标的移动值
double ColMove = Column - ColDown;//鼠标弹起时的列坐标减去按下时的列坐标，得到列坐标的移动值
HOperatorSet.GetPart(WindowID, out row1, out col1, out row2, out col2);//得到当前的窗口坐标
HOperatorSet.SetPart(WindowID, row1 - RowMove, col1 - ColMove, row2 - RowMove, col2 - ColMove);//这里可能有些不好理解。以左上角原点为参考点
HOperatorSet.ClearWindow(WindowID);
if (ImageHeight != null)
{
HOperatorSet.DispObj(ho_image, WindowID);
}
else
{
MessageBox.Show("请加载一张图片");
}
}
//鼠标移动，实时显示当前坐标与灰度值
private void hWindowControl1_HMouseMove(object sender, HMouseEventArgs e)
{
HTuple Row, Column, Button, pointGray;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button); //获取当前鼠标的坐标值
if (ImageHeight != null && (Row > 0 && Row < ImageHeight) && (Column > 0 && Column < ImageWidth))//设置3个条件项，防止程序崩溃。
{
HOperatorSet.GetGrayval(ho_image, Row, Column, out pointGray); //获取当前点的灰度值
}
else
{
pointGray = "_";
}
String str = String.Format("Row:{0} Column:{1} Gray:{2}", Row, Column, pointGray); //格式化字符串
label1.Text = str; //在label控件上显示数值
}
//全屏显示图像,使缩放后的图像回到原始大小
private void button_FullWindow_Click(object sender, EventArgs e)
{
HOperatorSet.SetPart(WindowID, 0, 0, ImageHeight - 1, ImageWidth - 1);
HOperatorSet.ClearWindow(WindowID);
HOperatorSet.DispObj(ho_image, WindowID);
}

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网上找的代码，说实话上面这个代码是一般般，建议把再添加一个控件的MOVE方法，可以实现滚轮缩放，按住鼠标移动就拖拽，不像上面这个代码一样一卡一卡再显示！
出现闪烁的话，在ClearWindow之前设置

HOperatorSet.SetSystem("flush_graphic", "false");

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清除窗口后再重新打开

HOperatorSet.SetSystem("flush_graphic", "true");

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RockKin · 发表于 2020-12-28 18:21:42

进不去滚轮事件啊 hWindowControl1_HMouseWheel ，，点击什么的都能进就是这个进不了

RockKin · 发表于 2020-12-28 18:22:42

RockKin 发表于 2020-12-28 18:21
进不去滚轮事件啊 hWindowControl1_HMouseWheel ，，点击什么的都能进就是这个进不了 ...

我用的是smartControl