Opencascade子类化AIS_PointCloud实现自定义显示和选择样式

//定义子类myAisPointCloud .h

//myAisPointCloud .h

class myAisPointCloud :public AIS_PointCloud

{

public:

　　bmAisPointCloud(const std::vector<gp_Pnt>& vecPoint);

　　Standard_Boolean AcceptDisplayMode(const Standard_Integer aMode) const Standard_OVERRIDE;

private:

void Compute (const Handle(PrsMgr_PresentationManager3d)& aPresentationManager,
　　　　　　　　const Handle(Prs3d_Presentation)& aPresentation,
　　　　　　　　const Standard_Integer aMode);

void ComputeSelection(const Handle(SelectMgr_Selection)& aSelection, const Standard_Integer aMode);

//

};

//myAisPointCloud .cpp

myAisPointCloud ::myAisPointCloud (const std::vector<gp_Pnt>& vecPoint)
:AIS_PointCloud()
{

　　//do something

      // MY_MODE 非0整数

　　myHilightDrawer->SetDisplayMode(MY_MODE);

}

Standard_Boolean myAisPointCloud ::AcceptDisplayMode(const Standard_Integer aMode) const
{
　　return aMode == 0|| aMode == MY_MODE;
}

void bmAisPointCloud::Compute(const Handle(PrsMgr_PresentationManager3d)&  aPresentationManager ,const Handle(Prs3d_Presentation)& thePrs,const Standard_Integer aMode)
{
switch (aMode)
{
case AIS_PointCloud::DM_Points:
case MY_MODE:
{
const Handle(Graphic3d_ArrayOfPoints) aPoints = GetPoints();
if (aPoints.IsNull())
{
return;
}
Handle(Graphic3d_Group) aGroup = thePrs->NewGroup();

//点云是通过mark来呈现

Handle(Graphic3d_AspectMarker3d) aMarker = new Graphic3d_AspectMarker3d(Aspect_TOM_POINT, Quantity_NOC_GREEN, 1.0);

//点的放大比例设为2.5
aMarker->SetScale(2.5);

Handle(Graphic3d_AspectMarker3d) asp;

//设置鼠标hover时单个点的显示样式

asp = myDynHilightDrawer->PointAspect()->Aspect();

//加号“ + ”样式
asp->SetType(Aspect_TOM_PLUS);

//绿色
asp->SetColor(Quantity_NOC_GREEN); 

//设置被选中时（整体或者局部选中）显示样式

asp = myHilightDrawer->PointAspect()->Aspect();

//加号“ + ”样式
asp->SetType(Aspect_TOM_PLUS);

//黑色
asp->SetColor(Quantity_NOC_BLACK);

//设置当前GroupPrimitives的Marker aspect

aGroup->SetGroupPrimitivesAspect(aMarker);

//将点云add到PrimitiveArray

aGroup->AddPrimitiveArray(aPoints);
break;
}

//点云作为整体选中的样式，显示包围盒

case AIS_PointCloud::DM_BndBox:
{
Bnd_Box aBndBox = GetBoundingBox();
if (aBndBox.IsVoid())
{
return;
}

StdPrs_BndBox::Add(thePrs, aBndBox, AIS_PointCloud::myDrawer);
break;

}
}

}

Opencascade子类化AIS_PointCloud实现自定义显示和选择样式

原文：https://www.cnblogs.com/Craftsman-lee/p/13657561.html