<s>
Oak3D	B-General_Concept
is	O
a	O
free	O
JavaScript	B-Language
library	O
for	O
3D	O
graphics	O
development	O
based	O
on	O
the	O
HTML5	B-Application
WebGL	B-Library
standard	O
,	O
dedicated	O
in	O
realizing	O
the	O
Web3D	B-General_Concept
applications	O
with	O
GPU	O
acceleration	O
for	O
all	O
the	O
front-end	O
developers	O
in	O
an	O
easy	O
and	O
efficient	O
way	O
.	O
</s>
<s>
Developed	O
with	O
JavaScript	B-Language
,	O
Oak3D	B-General_Concept
can	O
provide	O
originally	O
a	O
cross-platform	B-Operating_System
solution	O
in	O
Windows	O
,	O
Linux	O
,	O
Mac	O
and	O
Android	O
.	O
</s>
<s>
Without	O
any	O
plugin	O
installed	O
or	O
downloaded	O
,	O
web3D	B-General_Concept
applications	O
based	O
on	O
Oak3D	B-General_Concept
can	O
run	O
on	O
all	O
the	O
modern	O
internet	O
browsers	O
that	O
support	O
WebGL	B-Library
.	O
</s>
<s>
Oak3D	B-General_Concept
provides	O
a	O
set	O
of	O
simple	O
and	O
ease-to-use	O
API	B-Application
which	O
allows	O
web	O
developers	O
developing	O
web3D	B-General_Concept
application	O
without	O
concerning	O
the	O
details	O
of	O
3D	O
graphics	O
implementation	O
.	O
</s>
<s>
Besides	O
,	O
Oak3D	B-General_Concept
also	O
provides	O
many	O
kinds	O
of	O
functional	O
libraries	O
,	O
such	O
as	O
Math	O
Library	O
,	O
Model	O
Library	O
,	O
Skeletal	O
Animation	O
Library	O
etc	O
.	O
</s>
<s>
Oak3D	B-General_Concept
additionally	O
provides	O
tools	O
to	O
convert	O
traditional	O
art	O
asset	O
to	O
the	O
format	O
acceptable	O
directly	O
by	O
Oak3D	B-General_Concept
.	O
</s>
<s>
Oak3D	B-General_Concept
is	O
composed	O
by	O
two	O
layers	O
,	O
Oak3D	B-General_Concept
Core	O
and	O
Oak3D	B-General_Concept
Engine	O
.	O
</s>
<s>
The	O
"	O
Core	O
"	O
layer	O
supplies	O
the	O
functional	O
wrapping	O
to	O
low-level	O
WebGL	B-Library
API	B-Application
and	O
basic	O
functional	O
libraries	O
for	O
3D	O
graphics	O
development	O
.	O
</s>
<s>
Developers	O
have	O
full	O
flexibility	O
in	O
this	O
layer	O
,	O
and	O
,	O
the	O
"	O
Core	O
"	O
interfaces	O
can	O
be	O
mixed	O
within	O
original	O
WebGL	B-Library
code	O
.	O
</s>
<s>
The	O
"	O
Engine	O
"	O
layer	O
provides	O
a	O
complete	O
3D	O
rendering	O
engine	O
built	O
over	O
the	O
Oak3D	B-General_Concept
Core	O
,	O
including	O
3D	O
Scene	O
Management	O
,	O
Material	O
System	O
,	O
Multi-Type	O
of	O
Lighting	O
,	O
Dynamic	O
Shadow	O
,	O
Skeleton	O
Animation	O
,	O
Terrain	O
and	O
other	O
interesting	O
features	O
.	O
</s>
<s>
In	O
this	O
layer	O
,	O
developers	O
could	O
implement	O
web3D	B-General_Concept
application	O
without	O
concerning	O
rendering	O
details	O
.	O
</s>
<s>
(	O
Oak3D	B-General_Concept
Engine	O
is	O
still	O
under	O
development	O
for	O
now	O
)	O
.	O
</s>
<s>
Checking	O
WebGL	B-Library
supportness	O
dynamically	O
by	O
one	O
single	O
function	O
(	O
okIsWebGL	O
)	O
.	O
</s>
