yang686526

dwg file coordinates to world

dwg file coordinates to world
hi all,
before beginning writing a lot of wrong code i write a little question here
which is the best way to get world coordinates from dwg file?
the only thing i want to do is:
1) open dwg file
2) go around from dwg elements
3) write down world coordinates of every vertex
thanky you in advance
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 23rd may 2006, 01:50 am

softdev join date: jun 2002
location: st'petersburg, russia
posts: 522

see our odvectorizeex sample, it solves nearly this task.
sincerely yours,
george udov

george udov
# 23rd may 2006, 01:55 am

registered user join date: feb 2006
location: pisa
posts: 69

quote:
originally posted by george udov
see our odvectorizeex sample, it solves nearly this task.
the only question is: does a dwg contains world coordinates or do i have to convert them in a few way?
i need to make a simple thing and odvectorizeex seems to makes this in a complicate way....
thank you
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 23rd may 2006, 02:00 am

softdev join date: jun 2002
location: st'petersburg, russia
posts: 522

in common case, dwg can contain a lot of objects, that can contain absolutely any coordinates. also dwg can contain block references with model transforms and spatial clips. in this case, information, that is stored in dwg, is not in world coordinates.
odvectorizeex is a right way to solve vectorization tasks, other ways are wrong.
sincerely yours,
george udov

george udov
# 23rd may 2006, 02:06 am

registered user join date: feb 2006
location: pisa
posts: 69

quote:
originally posted by george udov
odvectorizeex is a right way to solve vectorization tasks, other ways are wrong.
ok, i understand this. but vectorization is relative to a "view".
in the case of the example we have a pseudo-view of 1000x1000.
i need to get absolute coordinates instead...
maybe a lost something trying to understand the example?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 23rd may 2006, 02:13 am

softdev join date: jun 2002
location: st'petersburg, russia
posts: 522

in exsimpleview::update(), there is a line:
code:
seteyetooutputtransform(eye2screen);
if you substitute it by
code:
seteyetooutputtransform(geteyetoworldtransform());
then you'll get wcs coordinates.
sincerely yours,
george udov

george udov
# 23rd may 2006, 02:25 am

registered user join date: feb 2006
location: pisa
posts: 69

ok, then if i understood well the only thing i have to do is:
1) change seteyetooutputtransform(eye2screen); to seteyetooutputtransform(geteyetoworldtransform());
2) replace all the odgiconveyorgeometrydumper dumper functions with mine "drawing" function
do i forget something?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 23rd may 2006, 02:27 am

softdev join date: jun 2002
location: st'petersburg, russia
posts: 522

yes, it is so. you didn't missed anything.
(maybe except some kind of your specific initialization, etc)
sincerely yours,
george udov

george udov
# 23rd may 2006, 02:29 am

registered user join date: feb 2006
location: pisa
posts: 69

perfect
thank you very much
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 23rd may 2006, 08:04 am

registered user join date: feb 2006
location: pisa
posts: 69

another question.......
with your help i finally realize my application...
now i need another little thing:
- when i am in drawing proc in my "odgiconveiorgeometry" subclassed class, how can i know wich is the layer owning the geometry i'm drawing??
thank you again
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar

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see our odvectorizeex sample, it solves nearly this task.
sincerely yours,
george udov

quote:
originally posted by george udov
see our odvectorizeex sample, it solves nearly this task.
the only question is: does a dwg contains world coordinates or do i have to convert them in a few way?
i need to make a simple thing and odvectorizeex seems to makes this in a complicate way....
thank you
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

in common case, dwg can contain a lot of objects, that can contain absolutely any coordinates. also dwg can contain block references with model transforms and spatial clips. in this case, information, that is stored in dwg, is not in world coordinates.
odvectorizeex is a right way to solve vectorization tasks, other ways are wrong.
sincerely yours,
george udov

quote:
originally posted by george udov
odvectorizeex is a right way to solve vectorization tasks, other ways are wrong.
ok, i understand this. but vectorization is relative to a "view".
in the case of the example we have a pseudo-view of 1000x1000.
i need to get absolute coordinates instead...
maybe a lost something trying to understand the example?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

in exsimpleview::update(), there is a line:
code:
seteyetooutputtransform(eye2screen);
if you substitute it by
code:
seteyetooutputtransform(geteyetoworldtransform());
then you'll get wcs coordinates.
sincerely yours,
george udov

ok, then if i understood well the only thing i have to do is:
1) change seteyetooutputtransform(eye2screen); to seteyetooutputtransform(geteyetoworldtransform());
2) replace all the odgiconveyorgeometrydumper dumper functions with mine "drawing" function
do i forget something?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

yes, it is so. you didn't missed anything.
(maybe except some kind of your specific initialization, etc)
sincerely yours,
george udov

perfect
thank you very much
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

another question.......
with your help i finally realize my application...
now i need another little thing:
- when i am in drawing proc in my "odgiconveiorgeometry" subclassed class, how can i know wich is the layer owning the geometry i'm drawing??
thank you again
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============