主题：紧急求救
until
[专家分：0] 发布于 2009-07-14 10:05:00
下载了这个小程序，但是就不知道怎么改为向上滚动。哪位高手教教小弟
回复列表 （共3个回复）
沙发
until [专家分：0] 发布于 2009-07-14 10:14:00
class LED
{
Bitmap m_Srcmap;
Bitmap m_Desmap;
int m_iCellSize;
int m_iBorderSize;
public LED()
{
m_Srcmap = new Bitmap(100, 50);
m_Desmap = new Bitmap(300, 80);
m_iCellSize = 3;
m_iBorderSize = 1;
}
//设置文字
public void SetText(string strText)
{
Graphics g = Graphics.FromImage(this.m_Srcmap);
g.FillRectangle(Brushes.DarkGreen, 0, 0, this.m_Srcmap.Width, this.m_Srcmap.Height);
SolidBrush brush = new SolidBrush(Color.FromArgb(20, 255, 20));
g.DrawString(strText, new Font("Arial", 9f), brush, 1, 1);
g.Dispose();
//根据srcBitmap绘制desBitmap
BitmapData desData = m_Desmap.LockBits(
new Rectangle(0, 0, m_Desmap.Width, m_Desmap.Height),
ImageLockMode.ReadWrite,
PixelFormat.Format24bppRgb);
//获取源图的bmdata
BitmapData srcData = m_Srcmap.LockBits(
new Rectangle(0, 0, m_Srcmap.Width, m_Srcmap.Height),
ImageLockMode.ReadOnly,
PixelFormat.Format24bppRgb
);
//扫描行宽度
int desStride = desData.Stride;
int srcStride = srcData.Stride;
unsafe
{
byte* pDest = (byte*)(void*)desData.Scan0;
byte* pSrc = (byte*)(void*)srcData.Scan0; //源图
for (int i = 0; i < m_Srcmap.Width; ++i)
{
for (int j = 0; j < m_Srcmap.Height; ++j)
{
int widthStart = i * (m_iCellSize + m_iBorderSize);
int widthEnd = i * (m_iCellSize + m_iBorderSize) + m_iCellSize;
int heightStart = j * (m_iCellSize + m_iBorderSize);
int heightEnd = j * (m_iCellSize + m_iBorderSize) + m_iCellSize;
for (int l = heightStart; (l < heightEnd && l < m_Desmap.Height); ++l)
{
for (int k = widthStart; (k < widthEnd && k < m_Desmap.Width); ++k)
{
pDest[desStride * l + k * 3] = pSrc[srcStride * j + i * 3]; //B
pDest[desStride * l + k * 3 + 1] = pSrc[srcStride * j + i * 3 + 1]; //G
pDest[desStride * l + k * 3 + 2] = pSrc[srcStride * j + i * 3 + 2]; //R
}
}
}
}
m_Srcmap.UnlockBits(srcData);
m_Desmap.UnlockBits(desData);
}
}
板凳
until [专家分：0] 发布于 2009-07-14 10:14:00
//循环移动
public void MoveStep()
{
//根据srcBitmap绘制desBitmap
BitmapData desData = m_Desmap.LockBits(
new Rectangle(0, 0, m_Desmap.Width, m_Desmap.Height),
ImageLockMode.ReadWrite,
PixelFormat.Format24bppRgb);
//获取源图的bmdata
BitmapData srcData = m_Srcmap.LockBits(
new Rectangle(0, 0, m_Srcmap.Width, m_Srcmap.Height),
ImageLockMode.ReadWrite,
PixelFormat.Format24bppRgb
);
//扫描行宽度
int desStride = desData.Stride;
int srcStride = srcData.Stride;
unsafe
{
byte* pDest = (byte*)(void*)desData.Scan0;
byte* pSrc = (byte*)(void*)srcData.Scan0; //源图
//循环向前移动
for (int j = 0; j < m_Srcmap.Height; ++j)
{
for (int i = 0; i < m_Srcmap.Width; ++i)
{
pSrc[srcStride * j + i * 3] = pSrc[srcStride * j + ((i + 1) % m_Srcmap.Width) * 3]; //B
pSrc[srcStride * j + i * 3 + 1] = pSrc[srcStride * j + ((i + 1) % m_Srcmap.Width) * 3 + 1]; //G
pSrc[srcStride * j + i * 3 + 2] = pSrc[srcStride * j + ((i + 1) % m_Srcmap.Width) * 3 + 2]; //R
}
}
for (int i = 0; i < m_Srcmap.Width; ++i)
{
for (int j = 0; j < m_Srcmap.Height; ++j)
{
int widthStart = i * (m_iCellSize + m_iBorderSize);
int widthEnd = i * (m_iCellSize + m_iBorderSize) + m_iCellSize;
int heightStart = j * (m_iCellSize + m_iBorderSize);
int heightEnd = j * (m_iCellSize + m_iBorderSize) + m_iCellSize;
for (int l = heightStart; (l < heightEnd && l < m_Desmap.Height); ++l)
{
for (int k = widthStart; (k < widthEnd && k < m_Desmap.Width); ++k)
{
pDest[desStride * l + k * 3] = pSrc[srcStride * j + i * 3]; //B
pDest[desStride * l + k * 3 + 1] = pSrc[srcStride * j + i * 3 + 1]; //G
pDest[desStride * l + k * 3 + 2] = pSrc[srcStride * j + i * 3 + 2]; //R
}
}
}
}
m_Srcmap.UnlockBits(srcData);
m_Desmap.UnlockBits(desData);
}
}
public void GetBitmap(ref PictureBox picBox)
{
picBox.Image = m_Desmap;
//picBox.Image = m_Srcmap;
}
}
3 楼
until [专家分：0] 发布于 2009-07-15 15:08:00
//循环向上移动
for (int j = 0; j < m_Srcmap.Height; ++j)
{
for (int i = 0; i < m_Srcmap.Width; ++i)
{
pSrc[srcStride * j + i * 3] = pSrc[srcStride * ((j + 1) % m_Srcmap.Height) + i * 3]; //B
pSrc[srcStride * j + i * 3 + 1] = pSrc[srcStride * ((j + 1) % m_Srcmap.Height) + i * 3 + 1]; //G
pSrc[srcStride * j + i * 3 + 2] = pSrc[srcStride * ((j + 1) % m_Srcmap.Height) + i * 3 + 2]; //R
}
}
自己弄好了，和大家分享一下
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