<watkins...@hotmail.com> wrote in message
news:1178393767.591505.264840@o5g2000hsb.googlegroups.com...
On 5 May, 19:40, Rolf Magnus <ramag...@t-online.de> wrote:
watkins...@hotmail.com wrote:
I have re-written the application from passing pointers to the mesh
object to functions to an application that passes references but I
still get the same type of problem.
Sounds reasonable, if that was the only change you made.
in my current version, I declare a reference, m_ref and then pass
this object
You mean the object it refers to? Why are you creating a reference first?
to the following sequence of function calls :
create sphere ( my_mesh& p_mesh ) returning p_mesh.
select_vertex_cluster ( my_mesh& p_mesh ) returning p_mesh.
Edit_vertex_cluster (( my_mesh& p_mesh ) returning p_mesh.)
If I call the Edit_vertex_cluster , for a second time, it just
cannot
find any data, that has been created previously within the object.
There is not enough information to say what is wrong.
I would guess that you are attempting to reseat a reference, which you
can
not do. Other than that, I would have to see the code.- Hide quoted
text
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Is a reference reset if a return value is passed back to it ?
I have no idea what you mean by that. There is no way to "reset" a
reference. Everything you do after it's initialized is done to the object
it refers to.
Sorry, I am not wearing glasses, reset/reseat
Anyhow here's some code ,I apologie if it looks, un-together.
//////////////////////////////////////////////////////////////////////
// Setting up the references and pointers, Globaly
//////////////////////////////////////////////////////////////////////
m_model& m_ref = oooo;
Okay, m_ref is pointing at the variable oooo;
m_model& b_ref = uuuu;
b_ref is pointing to the variable uuuu;
m_model* tmp;
m_model* z_mesh;
///////////////////////////////
// create sphere
///////////////////////////////
tmp = new m_model
;
D3DXCreateSphere(my3d_device,0.5, 32, 32,&tmp->m_Mesh, NULL);
m_ref = oooo;
And you are assigning m_ref to itself. m_ref is already pointing to oooo;
So this is the exact same as saying:
oooo = oooo;
You can not change where m_ref is pointing to at this point, but then I'm
not sure what you're trying to do here anyway since you aleady pointed m_ref
to oooo this seems to be a noop.
m_ref = m_ref.copy_sphere(my3d_device,tmp, m_ref );
Okay, you're assinging what m_ref is pointing to (oooo) whatever
m_ref.copy_sphere returns.
m_ref = m_ref.m_x_rotate(m_ref, 90.0, 1);
And now you're assigning what m_ref is pointing to (oooo) whatever
m_ref.m_x_rotate returns. So what were you planing on doing witth the
previous assignment?
oooo.X = 0;
And now you're setting the variable x in oooo (which is still the same place
m_ref is pointing to) a value.
oooo.Y = 0;
oooo.Z = 0;
same with these 2.
cluster_mesh[mesh_index] = m_ref;
Okay, so now cluster_mesh[mesh_index] is assigned the instance of oooo
Pretty much stopping commening on this code.
mesh_index++;
///////////////////////////////////////
// Getting and setting a vertex cluster
///////////////////////////////////////
if( f_thru == true )
{
m_ref.vIndex = new WORD [4];
m_ref.Cull_Type = new int [4];
f_thru = false;
}
else
{
delete[] m_ref.vIndex;
m_ref.vIndex = new WORD [4];
delete[] m_ref.Cull_Type;
m_ref.Cull_Type = new int [4];
i_pos = 0;
}
switch(type_cursor)
{
case 1:
numberOfpoints = 4;
break;
. . .
}
m_ref.Get_cursor_Onject_data(m_ref, type_cursor, numberOfpoints);
/////////////////////////
//Edit mesh object
/////////////////////////
m_ref = m_ref.process_Sub_Trunc_Level_Extrude( m_ref,
my3d_device ,
scale_value, true, e_type );
cluster_mesh[0] = m_ref;
You say that this code works the first time you run through it. I don't
know if that's by luck or hapinstance, but a lot of the code just isn't
making sense to me. You assign the reference m_ref to pont to oooo then
continue to use oooo some places anyway. If you're going to use oooo then
don't bother with a reference. A reference is just an alias. So after you
do:
m_model& m_ref = oooo;
every time you refer to m_ref you are refering to oooo. Change every
occurance of m_ref in this code with oooo and it should do the exact same
thing (except for the declaration of m_ref of course).
I don't think references are doing what you think they're doing. Or I"m
missing something.- Hide quoted text -
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- Show quoted text -
Thank you for reply, as you can see I have been slighlty confused. But
to references because I needed to impliment a copy constructor.