ObjectArx设置图面视图
void SetView(AcGePoint2d Pt1, AcGePoint2d Pt2, double ex_ratio){
AcGePoint2d CenterPt;
if ((fabs(Pt1.x - Pt2.x) < 1e-6) || (fabs(Pt1.y - Pt2.y) < 1e-6))
{
return;
}
//确保两个坐标点分别为左上角和右下角
if (Pt1.x>Pt2.x)
{
double tmp;
tmp = Pt1.x;
Pt1.x = Pt2.x;
Pt2.x = tmp;
}
if (Pt2.y>Pt1.y)
{
double tmp;
tmp = Pt1.y;
Pt1.y = Pt2.y;
Pt2.y = tmp;
}
//获取当前DwgView的尺寸
CRect CADrect;
acedGetAcadDwgView()->GetClientRect(&CADrect);
double width, height, ratio;
ratio = (double)(CADrect.right - CADrect.left) / (double)(CADrect.bottom - CADrect.top);
if (fabs(ratio) < 1e-6)
{
return;
}
if ((Pt2.x - Pt1.x) / (Pt1.y - Pt2.y) > ratio)
{
width = Pt2.x - Pt1.x;
height = width / ratio;
}
else
{
height = Pt1.y - Pt2.y;
width = height * ratio;
}
//设置当前视图中心点
CenterPt.x = (Pt1.x + Pt2.x) / 2;
CenterPt.y = (Pt1.y + Pt2.y) / 2;
//改变当前视图
AcDbViewTableRecord pVwRec;
pVwRec.setCenterPoint(CenterPt);
pVwRec.setWidth(width * ex_ratio);
pVwRec.setHeight(height * ex_ratio);
acedSetCurrentView(&pVwRec, NULL);
}
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