ON_BOOL32 ON_ArcCurve::SetEndPoint(ON_3dPoint end_point)
{
if (IsCircle())
return false;
ON_BOOL32 rc = false;
if ( m_dim == 3 || end_point.z == 0.0 )
{
ON_3dPoint P;
ON_3dVector T;
double t = Domain()[0];
Ev1Der( t, P, T );
ON_Arc a;
rc = a.Create( P, T, end_point );
if ( rc )
{
m_arc = a;
}
else {
ON_3dPoint start_point = PointAt(Domain()[0]);
if (end_point.DistanceTo(start_point) < ON_ZERO_TOLERANCE*m_arc.Radius()){
//make arc into circle
m_arc.plane.xaxis = start_point - m_arc.Center();
m_arc.plane.xaxis.Unitize();
m_arc.plane.yaxis = ON_CrossProduct(m_arc.Normal(), m_arc.plane.xaxis);
m_arc.plane.yaxis.Unitize();
m_arc.SetAngleRadians(2.0*ON_PI);
rc = true;
}
}
}
return rc;
}
ON_BOOL32 ON_ArcCurve::ChangeClosedCurveSeam(
double t ){
bool rc = false;
if( IsCircle() ){
double angle_delta = m_t.NormalizedParameterAt(t);
angle_delta*= 2*ON_PI;
m_arc.Rotate(angle_delta, m_arc.plane.Normal());
m_t = ON_Interval( t, m_t[1] + t - m_t[0]);
rc = true;
}
return rc;
}
void Location::CalculateBoundingBox()
{
if(IsCircle())
{
boundingBox.AddBoundingVertex(pos.x-radius,pos.z-radius);
boundingBox.AddBoundingVertex(pos.x+radius,pos.z+radius);
}
else
{
for(size_t i=0; i< locs.GetSize(); i++)
{
boundingBox.AddBoundingVertex(locs[i]->pos.x,locs[i]->pos.z);
}
}
}
