本文整理汇总了C++中EntityBase::NormalExprsN方法的典型用法代码示例。如果您正苦于以下问题：C++ EntityBase::NormalExprsN方法的具体用法？C++ EntityBase::NormalExprsN怎么用？C++ EntityBase::NormalExprsN使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类EntityBase的用法示例。
在下文中一共展示了EntityBase::NormalExprsN方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: GenerateReal
//.........这里部分代码省略.........
case Type::DIAMETER: {
EntityBase *circle = SK.GetEntity(entityA);
Expr *r = circle->CircleGetRadiusExpr();
AddEq(l, (r->Times(Expr::From(2)))->Minus(exA), 0);
return;
}
case Type::EQUAL_RADIUS: {
EntityBase *c1 = SK.GetEntity(entityA);
EntityBase *c2 = SK.GetEntity(entityB);
AddEq(l, (c1->CircleGetRadiusExpr())->Minus(
c2->CircleGetRadiusExpr()), 0);
return;
}
case Type::EQUAL_LINE_ARC_LEN: {
EntityBase *line = SK.GetEntity(entityA),
*arc = SK.GetEntity(entityB);
// Get the line length
ExprVector l0 = SK.GetEntity(line->point[0])->PointGetExprs(),
l1 = SK.GetEntity(line->point[1])->PointGetExprs();
Expr *ll = (l1.Minus(l0)).Magnitude();
// And get the arc radius, and the cosine of its angle
EntityBase *ao = SK.GetEntity(arc->point[0]),
*as = SK.GetEntity(arc->point[1]),
*af = SK.GetEntity(arc->point[2]);
ExprVector aos = (as->PointGetExprs()).Minus(ao->PointGetExprs()),
aof = (af->PointGetExprs()).Minus(ao->PointGetExprs());
Expr *r = aof.Magnitude();
ExprVector n = arc->Normal()->NormalExprsN();
ExprVector u = aos.WithMagnitude(Expr::From(1.0));
ExprVector v = n.Cross(u);
// so in our new csys, we start at (1, 0, 0)
Expr *costheta = aof.Dot(u)->Div(r);
Expr *sintheta = aof.Dot(v)->Div(r);
double thetas, thetaf, dtheta;
arc->ArcGetAngles(&thetas, &thetaf, &dtheta);
Expr *theta;
if(dtheta < 3*PI/4) {
theta = costheta->ACos();
} else if(dtheta < 5*PI/4) {
// As the angle crosses pi, cos theta is not invertible;
// so use the sine to stop blowing up
theta = Expr::From(PI)->Minus(sintheta->ASin());
} else {
theta = (Expr::From(2*PI))->Minus(costheta->ACos());
}
// And write the equation; r*theta = L
AddEq(l, (r->Times(theta))->Minus(ll), 0);
return;
}
case Type::POINTS_COINCIDENT: {
EntityBase *a = SK.GetEntity(ptA);
EntityBase *b = SK.GetEntity(ptB);
if(workplane.v == EntityBase::FREE_IN_3D.v) {
ExprVector pa = a->PointGetExprs();
ExprVector pb = b->PointGetExprs();
AddEq(l, pa.x->Minus(pb.x), 0);
AddEq(l, pa.y->Minus(pb.y), 1);