/// <summary>将指定区域分块
/// </summary>
/// <param name="nSize_Block_R">分块行高</param>
/// <param name="nSize_Block_C">分块列宽</param>
/// <param name="nMax">行最大块数</param>
/// <param name="bBase_Zero">是否从0,0开始计算</param>
/// <returns></returns>
public virtual List <Rectangle> Block(int nSize_Block_R, int nSize_Block_C, int nMax, bool bBase_Zero = false)
{
List <Rectangle> rectBlocks = new List <System.DrawingCore.Rectangle>();
Rectangle rectBlock;
Rectangle rectArea = new System.DrawingCore.Rectangle(0, 0, m_Rect.Width, m_Rect.Height);
int nRows, nCols, nCols_Block, nLeft, nTop;
int nBase_X = 0, nBase_Y = 0;
try
{
//计算行列块数
nCols_Block = nSize_Block_C * nMax;
nRows = (int)Math.Ceiling(1.0 * m_Rect.Height / nSize_Block_R);
nCols = (int)Math.Ceiling(1.0 * m_Rect.Width / nCols_Block);
//基点调整
if (bBase_Zero == false)
{
nBase_X = this.p_Left;
nBase_Y = this.p_Top;
rectArea = m_Rect;
}
//分区行分段 (均逐分区行扫描)
for (int i = 0; i < nRows; i++)
{
for (int j = 0; j < nCols; j++)
{
//示例分区
nLeft = nBase_X + j * nCols_Block;
nTop = nBase_Y + i * nSize_Block_R;
rectBlock = new System.DrawingCore.Rectangle(nLeft, nTop, nCols_Block, nSize_Block_R);
//与原区叠加
rectBlock.Intersect(rectArea);
rectBlocks.Add(rectBlock);
}
}
return(rectBlocks);
}
catch
{
throw;
}
}
/// <summary>
/// Intersect Method
/// </summary>
///
/// <remarks>
/// Replaces the Rectangle with the intersection of itself
/// and another Rectangle.
/// </remarks>
public void Intersect(Rectangle rect)
{
this = Rectangle.Intersect(this, rect);
}