tilemetric.h

来自「这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数」· C头文件 代码 · 共 51 行

/* ////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2005 Intel Corporation. All Rights Reserved.
//
//
//
*/

#ifndef __TILEMETRIC_H__
#define __TILEMETRIC_H__

#include "auxmath.h"

inline Rect TileRect(const Rect &imageRect, const Point &tileGridOrigin, const RectSize &tileSize, unsigned int tileRasterNumber)
{
    unsigned int nOfCols = DivCeil(imageRect.Origin().X() + imageRect.Width() - tileGridOrigin.X(), tileSize.Width());
    unsigned int row     = tileRasterNumber / nOfCols;
    unsigned int col     = tileRasterNumber - row * nOfCols;

    Rect rect(
            tileGridOrigin + RectSize(col, row) * tileSize,
            tileSize
        );

    rect.SetOrigin(
        Point(
            Max(rect.Origin().X(), imageRect.Origin().X()),
            Max(rect.Origin().Y(), imageRect.Origin().Y())
        )
    );

    Point imageBound = imageRect.Origin() + imageRect.Size();

    rect.SetSize(
        RectSize(
            Min(rect.Width(),  (unsigned int)(imageBound.X() - rect.Origin().X())),
            Min(rect.Height(), (unsigned int)(imageBound.Y() - rect.Origin().Y()))
        )
    );

    return rect;
}

#endif // __TILEMETRIC_H__