How to get the type of entity.

[sigmawave]

When I go through the DB_LIST_ENT_PTR, I want to know if an entity is a solid or surface or not.

I checked the SDK document, I didn't find any function about that.

 

Anybody can give a way?

 

Thanks a lot!

[Pete Rimkus from CNC Software Inc.]

get_ent_from_eptr() will give you the 'entity' structure for that pointer, and entity.id will tell you the type.

 

Look in DbVars_CH.h for the type constants. A surface, for instance is 256.

[sigmawave]

Thank you for your response.

 

I got it.

[Peter - Avivi CNC Solutions]

SigmaWave! What is your way to go through the db?

I use this to rotate all entities:

 

DL_DB_POS pos;

rewind_dl_db(ALIVE_BIT, L_ID|A_ID, &pos, false);

 

while (succf)

{

get_dl_db_ent(&pos, &e);

rotate_silent(&e.eptr, true, false, CenterPont, forgatasiszog, 1, &rotSuccf);

draw_ent(&e, e.color);

repaint_graphics();

 

if ((pos.u.db_ptr == db_start) | (pos.u.db_ptr == db_end)) {succf = false;}

 

}

 

BUT. This solution overflows with 1 ent. I mean one of my entities always rotate again (2times)... Why? What is what I left out?

[Peter - Avivi CNC Solutions]

I tried this way also:

 

succf = true;

ptr = db_start;

e_ptr = db_start;

dbEptr = db_end;

 

while (ptr != dbEptr)

{

get_ent(&ptr, &e_ptr, &e, ALIVE_BIT, L_ID|A_ID|S_ID|NB_ID, &succf);

 

rotate_silent(&e.eptr, true, false, CenterPont, forgatasiszog, 1, &rotSuccf);

draw_ent(&e, e.color);

repaint_graphics();

}

 

 

BUT. In this case one of my entities not rotate... Different than in my prev post...

[Peter - Avivi CNC Solutions]

1 more think.

 

When I go trough the DB, I would delete all lines which are yellow (14) and line...

 

I use this:

 

if ((e.id == L_ID) & (e.color == 14))

{

delete_ent(e.eptr, false, false, false, false, false);

}

 

But it seems to me, that is work halfway.

Are there any function I have to use too?

[Peter - Avivi CNC Solutions]

...and yes 1 more think...

 

What is the proper way to use the rewrite_ent?

I use alone itself:

rewrite_ent(&e, 0);

 

I tried to use it to change color of an entity (in the same cycle with rotating). But no lot of luck.

 

The color of entities changed well but I can' higligth them...

 

 

Oh MyGod, all of thinks above were much easy in VB as a simple NET-Hook...

[Peter - Avivi CNC Solutions]

I just discovered before a few moment, that I have the MR1 SDK...

 

[sigmawave]

Sorry, Hedelius.

 

I didn't check the forum yesterday.

 

It seems you have got your solution.

 

If you still need more information, I will check my source code to tell you more.

 

Sorry about that.

[Peter - Avivi CNC Solutions]

SigmaWave, it's nothing to say sorry about!!!

But Thank You for reply!!!

 

Today I tried some things:

I put the endptr watching in the first line in my cycle:

while (succf2)

{

if (ptr == dbEptr){succf2 = false;}

get_ent(&ptr, &e_ptr, &e, ALIVE_BIT, L_ID|A_ID|S_ID|NB_ID, &succf);

.

.

.

}

 

It works better as yesterday, but it's sometimes joking with me. Sometimes overflow with 1 entity but sometimes not...

Sometimes work well. Sometimes left out 1 entity.

Maybe my given IGES playin' with me? Maybe I have to upgrade to MR2 SP1 SDK? No idea. Yet.

 

SigmaWave, if You want, you can mail me a small snippet... Many Thanks!

[Peter - Avivi CNC Solutions]

Today.

 

I saw that, when I load my IGES and play a little with via Mastercam->xForm Translate/Rotate etc... And after then run my C-Hook (which rotate) everything fine... So I wrote a little cycle in my C-Hook before the rotating cycle. This short cycle only go trough the DB and rotate all entity with zero (yes, 0) degree...

 

After than I can rotate/translate etc. well via my C-Hook...

 

Projects for the next days: delete entity, change color/level...

 

( Slowly this topic become my blog... )

[sigmawave]

I think it is very easy to go through the DB.

 

Here we go:

 

code:

---

 

DB_LIST_ENT_PTR d_ptr = db_start;

CString tempStr;

ent entity;

CList<CString, CString&> entList;

 

 

do

{

get_ent_from_eptr(d_ptr, &entity);

tempStr.Format(_T("idn: %d, ID: %d"), entity.ent_idn, entity.id);

entList.AddTail(tempStr);

d_ptr=d_ptr->next;

}while( d_ptr != db_end);

 

 

POSITION pos;

 

if (entList.GetCount() >0 )

{

pos = entList.GetHeadPosition();

while(pos)

{

tempStr = entList.GetAt(pos);

AfxMessageBox(tempStr);

entList.GetNext(pos);

}

}

---

I retrieved all the entity's ent_idn and ID, and store them in a CList. Then show them one by one.

 

The only problem of this code section is it is no good when there is nothing in DB_LIST. But It seems impossible, even it is an empty program.

[Roger Martin from CNC Software]

Here is a method I've used if you are looking for something "specific".

Using the get_ent I can have the system match up on what I am looking for; entity type(s), only items that are "alive", etc.

 

code:

---

#include "DbGet_ch.h"

 

// __ ScanArcs __

// Loads the supplieed vectors with the arc/circles in the database

// Returns: The number of arcs that where found

//

ulong ScanForArcs(std::vector<CArcEntity*>& vCircles,

std::vector<CArcEntity*>& vArcs)

{

DB_LIST_ENT_PTR ptr, found_ptr;

MC_BOOL succf;

ent entity;

ulong arc_count = 0;

ulong circle_count = 0;

CArcEntity *a; // CArcEntity is a 'package' Class to hold info about an Arc

 

hourglass_cursor();

ptr = db_start; // start at the beginning

for (;

// Find all the ARC entities

{

get_ent (&ptr, &found_ptr, &entity, ALIVE_BIT, A_ID, &succf);

if (!succf) // No more arcs

{ break; }

 

arc_count++; // Count the total number of Arcs in the database (Full circle or not)

a = new CArcEntity(entity.eptr, entity.u.ar.r, entity.u.ar.view);

 

if (requal(fabs(entity.u.ar.sw), TWO_PI)) // Is it a "full" (360 deg) Circle?

{

vCircles.push_back(a); // Add it to the Full Circle list

}

else // It is an Arc segment"

{

vArcs.push_back(a); // Add it the the Arc segment list

}

} // looping thru the database - finding all arc entities

restore_cursor();

 

return arc_count;

}

---