int EllipseObjCreateCallBack::proc(ViewExp *vpt,int msg, int point, int flags, IPoint2 m, Matrix3& mat )
{
if ( ! vpt || ! vpt->IsAlive() )
{
// why are we here
DbgAssert(!_T("Invalid viewport!"));
return FALSE;
}
Point3 d;
#ifdef _3D_CREATE
DWORD snapdim = SNAP_IN_3D;
#else
DWORD snapdim = SNAP_IN_PLANE;
#endif
if (msg == MOUSE_FREEMOVE)
{
#ifdef _OSNAP
vpt->SnapPreview(m,m,NULL, snapdim);
#endif
}
if (msg==MOUSE_POINT||msg==MOUSE_MOVE)
{
switch(point)
{
case 0:
sp0 = m;
ob->suspendSnap = TRUE;
// Get the creation method
createType = theEllispeCreateBlock.GetInt(PB_CREATEMETHOD);
p0 = vpt->SnapPoint(m,m,NULL,snapdim);
p1 = p0 + Point3(.01,.01,.0);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_LENGTH,0,0.f);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_WIDTH,0,0.f);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_THICKNESS, 0, 0.f);
if(createType == CREATE_EDGE)
mat.SetTrans(float(.5)*(p0+p1));
else
mat.SetTrans(p0);
break;
case 1:
{
p1 = vpt->SnapPoint(m,m,NULL,snapdim);
p1.z = p0.z;
d = p1-p0;
float w = float(fabs(d.x));
float l = float(fabs(d.y));
if(flags & MOUSE_CTRL)
{
if(createType == CREATE_EDGE)
{
float ysign = (d.y < 0.0f) ? -1.0f : 1.0f;
mat.SetTrans(float(.5)*(p0+Point3(p1.x,p0.y+ysign*w,0.0f)));
}
else
{
mat.SetTrans(p0);
w = w * 2.0f;
}
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_LENGTH,0,w);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_WIDTH,0,w);
}
else
{
if(createType == CREATE_EDGE)
{
mat.SetTrans(float(.5)*(p0+p1));
}
else
{
mat.SetTrans(p0);
w = w * 2.0f;
l = l * 2.0f;
}
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_WIDTH,0,w);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_LENGTH,0,l);
}
theEllipseParamBlock.InvalidateUI();
if (msg == MOUSE_POINT && (Length(m-sp0)<3 || Length(p1-p0)<0.1f))
{
ob->suspendSnap = FALSE;
return CREATE_ABORT;
}
break;
}
case 2 :
{
ob->GetParamBlockByID(ellipse_params)->GetValue(PB_OUTLINE, 0, EllipseObject::msBuild_outline, ob->ivalid);
if(EllipseObject::msBuild_outline)
{
p2 = vpt->SnapPoint(m,m,NULL,snapdim);
float thickness = Length(p2-p0) - Length(p1-p0);
ob->GetParamBlockByID(ellipse_params)->SetValue(PB_THICKNESS,0,thickness);
if (msg == MOUSE_POINT)
{
ob->suspendSnap = FALSE;
return (Length(m-sp0)<3 || Length(p1-p0)<0.1f) ? CREATE_ABORT: CREATE_STOP;
}
}
else
{
ob->suspendSnap = FALSE;
return (Length(m-sp0)<3 || Length(p1-p0)<0.1f) ? CREATE_ABORT: CREATE_STOP;
}
break;
}
}
}
else if (msg == MOUSE_ABORT)
{
return CREATE_ABORT;
}
return TRUE;
}
