Re: [osg-users] colours in Android OSG
Hi Jorge and thanks for your reply. The file I am loading in the viewers is cell.osg (attached), which on Windows/Linux appears like screen_shot_0_0.jpg In the OSG android viewer example it appears like osgAndroidLightOn.jpg and if I toggle the light with the corresponding button I get osgAndroidLightOff.jpg. no message in LogCat about lights, the only message is about arial.ttf missing. I know I am probably showing how daft I am, but I thought the viewers would have shown the same model in the same way. Thanks Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47289#47289 Attachments: http://forum.openscenegraph.org//files/osgandroidlightoff_208.jpg http://forum.openscenegraph.org//files/osgandroidlighton_123.jpg http://forum.openscenegraph.org//files/screen_shot_0_0_185.jpg http://forum.openscenegraph.org//files/cell_100.osg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Hi, Maurizio, It probably comes from the fact that you're using ShapeDrawables for your geometry. ShapeDrawable was never intended for serious work, and as such, probably wasn't high on the list for support when OSG was ported to work with OpenGL ES. If you converted your geometry to use actual osg::Geometry drawables, you might have better luck. --J On 04/25/2012 10:47 AM, Maurizio Lodo wrote: Hi Jorge and thanks for your reply. The file I am loading in the viewers is cell.osg (attached), which on Windows/Linux appears like screen_shot_0_0.jpg In the OSG android viewer example it appears like osgAndroidLightOn.jpg and if I toggle the light with the corresponding button I get osgAndroidLightOff.jpg. no message in LogCat about lights, the only message is about arial.ttf missing. I know I am probably showing how daft I am, but I thought the viewers would have shown the same model in the same way. Thanks Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47289#47289 Attachments: http://forum.openscenegraph.org//files/osgandroidlightoff_208.jpg http://forum.openscenegraph.org//files/osgandroidlighton_123.jpg http://forum.openscenegraph.org//files/screen_shot_0_0_185.jpg http://forum.openscenegraph.org//files/cell_100.osg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Thanks Jason,
true, I was using ShapeDrawables. However, I was already working on converting
the geometries to use osg::Geometry. I have not done the cylinders yet; however
I have converted the cubes, and, unfortunately the results are exactly the
same. The code used to generate the cube geometry is pretty basic. Here it is:
Code:
osg::Geometry* CCubicPore::createCubeGeometry( const osg::Vec3 halfLengths,
const osg::Vec4 color)
{
const float xMin( -halfLengths[ 0 ] );
const float xMax( halfLengths[ 0 ] );
const float yMin( -halfLengths[ 1 ] );
const float yMax( halfLengths[ 1 ] );
const float zMin( -halfLengths[ 2 ] );
const float zMax( halfLengths[ 2 ] );
osg::Geometry* cube = new osg::Geometry();
osg::ref_ptr osg::Vec3Array vertices = osg::ref_ptr osg::Vec3Array (
new osg::Vec3Array );
osg::ref_ptr osg::Vec3Array normals = osg::ref_ptr osg::Vec3Array (
new osg::Vec3Array );
osg::ref_ptr osg::Vec4Array colors = osg::ref_ptr osg::Vec4Array (
new osg::Vec4Array );
// front face
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 0.0, -1.0 ) );
// back face
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
normals-push_back( osg::Vec3( 0.0, 0.0, 1.0 ) );
// left
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
normals-push_back( osg::Vec3( -1.0, 0.0, 0.0 ) );
// right
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 1.0, 0.0, 0.0 ) );
// bottom
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 0.0, -1.0, 0.0 ) );
// top
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 1.0, 0.0 ) );
cube-addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::QUADS, 0,
vertices-size() ) );
cube-setVertexArray( vertices );
cube-setTexCoordArray( 0, vertices );
cube-setNormalArray( normals );
cube-setNormalBinding( osg::Geometry::BIND_PER_PRIMITIVE );
colors-push_back( color );
cube-setColorArray( colors );
cube-setColorBinding( osg::Geometry::BIND_OVERALL );
return cube;
}
then I use osg::PositionAttitudeTransform to move the cubes to the correct
position.
Cheers,
Maurizio
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=47295#47295
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
If you're just using one overall color per drawable, try switching that
for an osg::Material with the DIFFUSE color set to the same color. You
might have better luck that way.
--J
On 04/25/2012 01:08 PM, Maurizio Lodo wrote:
Thanks Jason,
true, I was using ShapeDrawables. However, I was already working on converting
the geometries to use osg::Geometry. I have not done the cylinders yet; however
I have converted the cubes, and, unfortunately the results are exactly the
same. The code used to generate the cube geometry is pretty basic. Here it is:
Code:
osg::Geometry* CCubicPore::createCubeGeometry( const osg::Vec3 halfLengths, const
osg::Vec4 color)
{
const float xMin( -halfLengths[ 0 ] );
const float xMax( halfLengths[ 0 ] );
const float yMin( -halfLengths[ 1 ] );
const float yMax( halfLengths[ 1 ] );
const float zMin( -halfLengths[ 2 ] );
const float zMax( halfLengths[ 2 ] );
osg::Geometry* cube = new osg::Geometry();
osg::ref_ptr osg::Vec3Array vertices = osg::ref_ptr
osg::Vec3Array( new osg::Vec3Array );
osg::ref_ptr osg::Vec3Array normals = osg::ref_ptr osg::Vec3Array(
new osg::Vec3Array );
osg::ref_ptr osg::Vec4Array colors = osg::ref_ptr osg::Vec4Array(
new osg::Vec4Array );
// front face
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 0.0, -1.0 ) );
// back face
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
normals-push_back( osg::Vec3( 0.0, 0.0, 1.0 ) );
// left
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
normals-push_back( osg::Vec3( -1.0, 0.0, 0.0 ) );
// right
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 1.0, 0.0, 0.0 ) );
// bottom
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 0.0, -1.0, 0.0 ) );
// top
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 1.0, 0.0 ) );
cube-addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::QUADS, 0,
vertices-size() ) );
cube-setVertexArray( vertices );
cube-setTexCoordArray( 0, vertices );
cube-setNormalArray( normals );
cube-setNormalBinding( osg::Geometry::BIND_PER_PRIMITIVE );
colors-push_back( color );
cube-setColorArray( colors );
cube-setColorBinding( osg::Geometry::BIND_OVERALL );
return cube;
}
then I use osg::PositionAttitudeTransform to move the cubes to the correct
position.
Cheers,
Maurizio
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=47295#47295
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Unfortunately not. I am not getting this at all. The colour info is there, as you can see if I turn the light off, but as soon as the default headlight is turned on it all goes grey. Oh well thanks for the help anyway. Obviously this is not my thing at all! :) Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47300#47300 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Hi Maurizio, I think the problem could be that glColorMaterial is not supported in OpenGLES 1.1. When you use ColorArray in a Geometry, I think it uses glColorMaterial to enable lighting using the color of the geometry. If you want to use Colors + Lighting in OpenGL ES 1.1, you need to setup an osg::Material in the StateSet of the Geometry. There is an osgmaterial example that you could use for reference. Cheers, Rafa. El día 25 de abril de 2012 20:57, Maurizio Lodo maurimaur...@msn.com escribió: Unfortunately not. I am not getting this at all. The colour info is there, as you can see if I turn the light off, but as soon as the default headlight is turned on it all goes grey. Oh well thanks for the help anyway. Obviously this is not my thing at all! :) Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47300#47300 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Rafael Gaitán Linares CTO at Mirage Technologies S.L - http://www.mirage-tech.com gvSIG3D Developer - http://gvsig3d.blogspot.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
On 04/25/2012 03:21 PM, Rafa Gaitan wrote: Hi Maurizio, I think the problem could be that glColorMaterial is not supported in OpenGLES 1.1. When you use ColorArray in a Geometry, I think it uses glColorMaterial to enable lighting using the color of the geometry. If you want to use Colors + Lighting in OpenGL ES 1.1, you need to setup an osg::Material in the StateSet of the Geometry. There is an osgmaterial example that you could use for reference. Yeah, that's what I was trying to say. Thanks for translating for me, Rafa :-) --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Thanks guys, you are helping loads. I will try that tomorrow. What about GLES2? Cheers Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47307#47307 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Gles2 it goes all with shaders so if you don't rely on the default OSG shaders, use your own, set uniforms as you like, etc it's pretty much usable. There are still some glitches here and there that will be checked when i can make a decent configuration to debug in Android. 2012/4/25 Maurizio Lodo maurimaur...@msn.com Thanks guys, you are helping loads. I will try that tomorrow. What about GLES2? Cheers Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47307#47307 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
if I use osg::Material I get no colours and a warning in logcat Warning: detected OpenGL error 'invalid enumerant' at after RenderBin::draw(..) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47311#47311 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] colours in Android OSG
Hi, this is probably a daft question, but as I am a noob to the Android-OSG combo, I hope you will be gentle. I have built the android osgAndroidExampleGiLES1 and I tried to load, one of my osg models (nothing fancy, just a bunch of cubes and cylinders). These models display perfectly in the Viewer in Linux or Windows, and the cubes and cylinders, have their right colours, with the right shades and all. However, in the Android viewer all is grey (even though the shades are fine). If I turn the light off in the Android viewer then the colours appear, but they are flat, no shades, no way to even recognise the edges of the cubes or anything at all. I am guessing it has something to do with lighting, but I cannot work out what the difference between the android viewer and the linux/windows one. Can anyone point me in the right direction? Much appreciated Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47272#47272 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Maybe it's some kind of error in the light commands executated by OSG for GLES1. Still maybe you'll need to use the Notify to obtain errors through LogCat and that way maybe we can find the source of trouble. Good Luck 2012/4/24 Maurizio Lodo maurimaur...@msn.com These models display perfectly in the Viewer in Linux or Windows, and the cubes and cylinders, have their right colours, with the right shades and all. However, in the Android viewer all is grey (even though the shades are fine). If I turn the light off in the Android viewer then the colours appear, but they are flat, no shades, no way to even recognise the edges of the cubes or anything at all. I am guessing it has something to do with lighting, but I cannot work out what the difference between the android viewer and the linux/windows one. Can anyone point me in the right direction? Much appreciated ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
