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上传时间: 2011-12-20
详细说明： minX = 10000; minY = 10000; maxX = 0; maxY = 0; for(int k=0; k<4; k++) { if( minX > m_orgLoop.Points[k].x) minX = m_orgLoop.Points[k].x; if( minY > m_orgLoop.Points[k].y) minY = m_orgLoop.Points[k].y; if( maxX < m_orgLoop.Points[k].x) maxX = m_orgLoop.Points[k].x; if( maxY < m_orgLoop.Points[k].y) maxY = m_orgLoop.Points[k].y; } orgW = maxX - minX; orgH = maxY - minY; if( minX<0 || maxX<=0 || orgW<=0 || minY<0 || maxY<=0 || orgH<=0 ) { AfxMessageBo x("虚拟线圈参数设置不符合要求,\r\n请关闭程序后重新设置..."); return; } //求线圈的中心轴 double x1 = (m_orgLoop.Points[0].x + m_orgLoop.Points[1].x)/2.0; double y1 = (m_orgLoop.Points[0].y + m_orgLoop.Points[1].y)/2.0; double x2 = (m_orgLoop.Points[2].x + m_orgLoop.Points[3].x)/2.0; double y2 = (m_orgLoop.Points[2].y + m_orgLoop.Points[3].y)/2.0; double d = (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2); double sqd = sqrt(d); if( sqd == 0) { AfxMessageBox("虚拟线圈参数设置不符合要求,造成0为除数\r\n请关闭程序后重新设置..."); return; } cosa = (x1-x2)/sqd; //旋转角度的余弦，正弦 sina = (y2-y1)/sqd; double SrcX1 = -0.5*orgW; double SrcY1 = 0.5*orgH; double SrcX2 = 0.5*orgW; double SrcY2 = 0.5*orgH; double SrcX3 = -0.5*orgW; double SrcY3 = -0.5*orgH; double SrcX4 = 0.5*orgW; double SrcY4 = -0.5*orgH; double DstX1 = cosa*SrcX1 + sina*SrcY1; double DstY1 = -sina*SrcX1 + cosa*SrcY1; double DstX2 = cosa*SrcX2 + sina*SrcY2; double DstY2 = -sina*SrcX2 + cosa*SrcY2; double DstX3 = cosa*SrcX3 + sina*SrcY3; double DstY3 = -sina*SrcX3 + cosa*SrcY3; double DstX4 = cosa*SrcX4 + sina*SrcY4; double DstY4 = -sina*SrcX4 + cosa*SrcY4; newW = (int)(max(fabs(DstX4-DstX1), fabs(DstX3-DstX2))+0.5);//初始化裁切图象旋转后的新宽度 newH = (int)(max(fabs(DstY4-DstY1), fabs(DstY3-DstY2))+0.5);//初始化裁切图象旋转后的新高度 if( newW <= 0 || newH <= 0 ) { AfxMessageBox("裁切图象旋转后的新高度,宽度计算出现负值!"); return; } num1 = -0.5*newW*cosa - 0.5*newH*sina + 0.5*orgW; num2 = 0.5*newW*sina - 0.5*newH*cosa + 0.5*orgH; //原始线圈(矩形)的长(高)、宽 double xqH = sqrt( pow((double)m_orgLoop.Points[0].x-m_orgLoop.Points[3].x, 2) + pow((double)m_orgLoop.Points[0].y-m_orgLoop.Points[3].y, 2) ); double xqW = sqrt( pow((double)m_orgLoop.Points[0].x-m_orgLoop.Points[1].x, 2) + pow((double)m_orgLoop.Points[0].y-m_orgLoop.Points[1].y, 2) ); rcLoop.left = (LONG)((newW-xqH)*0.5); rcLoop.top = (LONG)((newH-xqW)*0.5); rcLoop.right = (LONG)((newW+xqH)*0.5); rcLoop.bottom = (LONG)((newH+xqW)*0.5); Invalidate(); ...展开收缩
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