C# 图像分割成9块
我的代码:C# 图像分割成9块,c#,C#,我的代码: private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { ngr.Dispose(); List<Image> list = new List<Image>(); Graphics g = Graphics.FromImage(pictureBox1.Image); B
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
ngr.Dispose();
List<Image> list = new List<Image>();
Graphics g = Graphics.FromImage(pictureBox1.Image);
Brush redBrush = new SolidBrush(Color.Red);
Pen pen = new Pen(redBrush,3);
MessageBox.Show(pictureBox1.Image.Width + " " + pictureBox1.Image.Height);
for (int i = 0; i < pictureBox1.Image.Width; i = (pictureBox1.Image.Width / 3) + i)
{
for (int y = 0; y < pictureBox1.Image.Height; y = (pictureBox1.Image.Height / 3) + y)
{
Rectangle r = new Rectangle(i, y, pictureBox1.Image.Width / 3, pictureBox1.Image.Height / 3);
g.DrawRectangle(pen,r );
if (i > 0 && y > 0)
{
if (i + r.Width < pictureBox1.Image.Width && y + r.Height < pictureBox1.Image.Height)
{
list.Add(cropImage(pictureBox1.Image, r));
}
}
}
}
g.Dispose();
pictureBox1.Invalidate();
pictureBox1.Image = list[0];
}
private static Image cropImage(Image img, Rectangle cropArea)
{
Bitmap bmpImage = new Bitmap(img);
Bitmap bmpCrop = bmpImage.Clone(cropArea, System.Drawing.Imaging.PixelFormat.DontCare);
return (Image)(bmpCrop);
}
private void pictureBox1\u MouseDown(对象发送方,MouseEventArgs e)
{
ngr.Dispose();
列表=新列表();
图形g=Graphics.FromImage(pictureBox1.Image);
画笔红色画笔=新的SolidBrush(颜色为红色);
钢笔=新钢笔(红色画笔,3);
MessageBox.Show(pictureBox1.Image.Width+“”+pictureBox1.Image.Height);
对于(int i=0;i0&&y>0)
{
if(i+r.宽度
此代码只向列表中添加了2个条目,但没有添加其他7个条目
请帮忙 更改这部分代码,然后重试:
for (int i = 0; i < 3; i++)
{
for (int y = 0; y < 3; y++)
{
Rectangle r = new Rectangle(i*(pictureBox1.Image.Width / 3),
y*(pictureBox1.Image.Height / 3),
pictureBox1.Image.Width / 3,
pictureBox1.Image.Height / 3);
g.DrawRectangle(pen,r );
list.Add(cropImage(pictureBox1.Image, r));
}
}
for(int i=0;i<3;i++)
{
对于(int y=0;y<3;y++)
{
矩形r=新矩形(i*(pictureBox1.Image.Width/3),
y*(图B1.Image.Height/3),
pictureBox1.Image.Width/3,
图片b 1.Image.Height/3);
g、 绘图矩形(笔,r);
添加(cropImage(pictureBox1.Image,r));
}
}