Re: [osg-users] second newbie question reiterated withdrawLi (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
If i remove the matrix transform that performs the rotation for the the
right triangle, i get the correct color on my triangle.
i don't understand why. help.
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Konkle, Daniel T
AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 11:35 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLin(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
I thought that this code in drawLines sets the color.
The strange thing is that the first triangle that I draw is the wrong
color and the second triangle is the correct color and they are both
drawn from the same geode.
i'm totally confused.
// pass the created vertex array to the points geometry object.
linesGeom-setVertexArray(vertices);
// set the colors as before, plus using the above
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4( colorVec[colorIndex][0],
colorVec[colorIndex][1],
colorVec[colorIndex][2], colorVec[colorIndex][3]));
linesGeom-setColorArray(colors);
linesGeom-setColorBinding(osg::Geometry::BIND_OVERALL);
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Tomlinson, Gordon
Sent: Thursday, March 12, 2009 11:11 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLine(UNCLASSIFIED)
You do not show how you set the color and material on the triangles
If this is not specified then you will pickup what ever the last
color
and/or material that was used by Opengl
Gordon
Product Manager 3d
__
Gordon Tomlinson
Email : gtomlinson @ overwatch.textron.com
__
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Konkle,
Daniel T AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 12:04 PM
To: OpenSceneGraph Users
Subject: [osg-users] second newbie question reiterated with
drawLine(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Any insight would be welcome.
So I'm drawing several triangles on my scene.
here is the code that draws the first 2.
I'm reusing the first same geode.
The strange thing is that the 'right triangle' is a different color
(black)
than the 'left triangle' (light green)
I'm actually drawing 2 others and they are black too.
I need them to be green.
Can anyone tell me what I'm doing wrong? It makes no sense to me.
Danny
osg::Vec3Array* tri = new osg::Vec3Array;
tri-push_back(osg::Vec3(0.0f, -0.1f, depth));
tri-push_back(osg::Vec3(0.1f, 0.0f, depth));
tri-push_back(osg::Vec3(0.0f, 0.1f, depth));
osg::ref_ptrosg::Geode triangle = new osg::Geode();
triangle-addDrawable( drawLines( tri, 0 ) );
// right triangle
{
osg::ref_ptrosg::MatrixTransform translate = new
osg::MatrixTransform;
osg::Matrix tran_mat = osg::Matrix::translate(
hud_aspect,0.0f,
0.0f );
translate-setMatrix( tran_mat );
osg::ref_ptrosg::MatrixTransform rotate = new
osg::MatrixTransform;
osg::Matrix rot_mat = osg::Matrix::rotate( M_PI, 0.0f, 0.0f,
1.0f);
rotate-setMatrix( rot_mat );
camera-addChild(translate.get());
translate-addChild( rotate.get() );
rotate-addChild( triangle.get() );;
}
// left triangle
{
osg::Matrix m;
osg::ref_ptrosg::MatrixTransform mt = new
osg::MatrixTransform;
m.makeTranslate( -hud_aspect, 0.0f, 0.0f );
mt-setMatrix( m );
camera-addChild(mt.get());
mt-addChild( triangle.get() );.
}
// create LINES
osg::Geometry * drawLines( osg::Vec3Array * vertices, int colorIndex
)
{
// create Geometry object to store all the vertices and lines
primitive.
osg::Geometry* linesGeom = new osg::Geometry();
// pass the created vertex array to the points geometry object.
linesGeom-setVertexArray(vertices);
// set the colors as before, plus using the above
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4( colorVec[colorIndex][0],
colorVec[colorIndex][1],
colorVec[colorIndex][2], colorVec[colorIndex][3]));
linesGeom-setColorArray(colors);
linesGeom-setColorBinding(osg::Geometry::BIND_OVERALL);
// set the normal in the same way color.
osg::Vec3Array* normals = new osg::Vec3Array;
normals-push_back(osg::Vec3(0.0f,-1.0f,0.0f));
Re: [osg-users] second newbie question reiterated withdrawLi(UNCLASSIFIED)
Are you rendering with lighting enabled or disabled?
I notice that along with setting the color array, you are setting a normal
array in your code below. Normally (no pun intended) you supply a normal
array if lighting is enabled...
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Konkle,
Daniel T AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 10:40 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLi(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
If i remove the matrix transform that performs the rotation for the the
right triangle, i get the correct color on my triangle.
i don't understand why. help.
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Konkle, Daniel T
AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 11:35 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLin(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
I thought that this code in drawLines sets the color.
The strange thing is that the first triangle that I draw is the wrong
color and the second triangle is the correct color and they are both
drawn from the same geode.
i'm totally confused.
// pass the created vertex array to the points geometry object.
linesGeom-setVertexArray(vertices);
// set the colors as before, plus using the above
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4( colorVec[colorIndex][0],
colorVec[colorIndex][1],
colorVec[colorIndex][2], colorVec[colorIndex][3]));
linesGeom-setColorArray(colors);
linesGeom-setColorBinding(osg::Geometry::BIND_OVERALL);
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Tomlinson, Gordon
Sent: Thursday, March 12, 2009 11:11 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLine(UNCLASSIFIED)
You do not show how you set the color and material on the triangles
If this is not specified then you will pickup what ever the last
color
and/or material that was used by Opengl
Gordon
Product Manager 3d
__
Gordon Tomlinson
Email : gtomlinson @ overwatch.textron.com
__
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Konkle,
Daniel T AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 12:04 PM
To: OpenSceneGraph Users
Subject: [osg-users] second newbie question reiterated with
drawLine(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Any insight would be welcome.
So I'm drawing several triangles on my scene.
here is the code that draws the first 2.
I'm reusing the first same geode.
The strange thing is that the 'right triangle' is a different color
(black)
than the 'left triangle' (light green)
I'm actually drawing 2 others and they are black too.
I need them to be green.
Can anyone tell me what I'm doing wrong? It makes no sense to me.
Danny
osg::Vec3Array* tri = new osg::Vec3Array;
tri-push_back(osg::Vec3(0.0f, -0.1f, depth));
tri-push_back(osg::Vec3(0.1f, 0.0f, depth));
tri-push_back(osg::Vec3(0.0f, 0.1f, depth));
osg::ref_ptrosg::Geode triangle = new osg::Geode();
triangle-addDrawable( drawLines( tri, 0 ) );
// right triangle
{
osg::ref_ptrosg::MatrixTransform translate = new
osg::MatrixTransform;
osg::Matrix tran_mat = osg::Matrix::translate(
hud_aspect,0.0f,
0.0f );
translate-setMatrix( tran_mat );
osg::ref_ptrosg::MatrixTransform rotate = new
osg::MatrixTransform;
osg::Matrix rot_mat = osg::Matrix::rotate( M_PI, 0.0f, 0.0f,
1.0f);
rotate-setMatrix( rot_mat );
camera-addChild(translate.get());
translate-addChild( rotate.get() );
rotate-addChild( triangle.get() );;
}
// left triangle
{
osg::Matrix m;
osg::ref_ptrosg::MatrixTransform mt = new
osg::MatrixTransform;
m.makeTranslate( -hud_aspect, 0.0f, 0.0f );
mt-setMatrix( m );
camera-addChild(mt.get());
mt-addChild( triangle.get() );.
}
// create LINES
osg::Geometry * drawLines( osg::Vec3Array * vertices, int colorIndex
)
{
// create Geometry object to store all the vertices and lines
primitive.
osg::Geometry* linesGeom = new osg::Geometry();
// pass the created vertex array to the points geometry object
Re: [osg-users] second newbie question reiterated withdrawLi(UNCLASSIFIED)
Another thought...if you do have lighting enabled, your lighting normals on
the black triangle could be facing the opposite direction from the light
source which might explain the black color. It might also explain why when
you fiddle with the matrix transform, the triangle color shows up (i.e. the
triangle is oriented towards the light source)...
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Konkle,
Daniel T AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 10:40 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLi(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
If i remove the matrix transform that performs the rotation for the the
right triangle, i get the correct color on my triangle.
i don't understand why. help.
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Konkle, Daniel T
AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 11:35 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLin(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
I thought that this code in drawLines sets the color.
The strange thing is that the first triangle that I draw is the wrong
color and the second triangle is the correct color and they are both
drawn from the same geode.
i'm totally confused.
// pass the created vertex array to the points geometry object.
linesGeom-setVertexArray(vertices);
// set the colors as before, plus using the above
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4( colorVec[colorIndex][0],
colorVec[colorIndex][1],
colorVec[colorIndex][2], colorVec[colorIndex][3]));
linesGeom-setColorArray(colors);
linesGeom-setColorBinding(osg::Geometry::BIND_OVERALL);
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-
boun...@lists.openscenegraph.org] On Behalf Of Tomlinson, Gordon
Sent: Thursday, March 12, 2009 11:11 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] second newbie question reiterated
withdrawLine(UNCLASSIFIED)
You do not show how you set the color and material on the triangles
If this is not specified then you will pickup what ever the last
color
and/or material that was used by Opengl
Gordon
Product Manager 3d
__
Gordon Tomlinson
Email : gtomlinson @ overwatch.textron.com
__
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Konkle,
Daniel T AMRDEC/Dynetics
Sent: Thursday, March 12, 2009 12:04 PM
To: OpenSceneGraph Users
Subject: [osg-users] second newbie question reiterated with
drawLine(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Any insight would be welcome.
So I'm drawing several triangles on my scene.
here is the code that draws the first 2.
I'm reusing the first same geode.
The strange thing is that the 'right triangle' is a different color
(black)
than the 'left triangle' (light green)
I'm actually drawing 2 others and they are black too.
I need them to be green.
Can anyone tell me what I'm doing wrong? It makes no sense to me.
Danny
osg::Vec3Array* tri = new osg::Vec3Array;
tri-push_back(osg::Vec3(0.0f, -0.1f, depth));
tri-push_back(osg::Vec3(0.1f, 0.0f, depth));
tri-push_back(osg::Vec3(0.0f, 0.1f, depth));
osg::ref_ptrosg::Geode triangle = new osg::Geode();
triangle-addDrawable( drawLines( tri, 0 ) );
// right triangle
{
osg::ref_ptrosg::MatrixTransform translate = new
osg::MatrixTransform;
osg::Matrix tran_mat = osg::Matrix::translate(
hud_aspect,0.0f,
0.0f );
translate-setMatrix( tran_mat );
osg::ref_ptrosg::MatrixTransform rotate = new
osg::MatrixTransform;
osg::Matrix rot_mat = osg::Matrix::rotate( M_PI, 0.0f, 0.0f,
1.0f);
rotate-setMatrix( rot_mat );
camera-addChild(translate.get());
translate-addChild( rotate.get() );
rotate-addChild( triangle.get() );;
}
// left triangle
{
osg::Matrix m;
osg::ref_ptrosg::MatrixTransform mt = new
osg::MatrixTransform;
m.makeTranslate( -hud_aspect, 0.0f, 0.0f );
mt-setMatrix( m );
camera-addChild(mt.get());
mt-addChild( triangle.get() );.
}
// create LINES
osg::Geometry * drawLines( osg::Vec3Array * vertices, int colorIndex
)
{
// create Geometry object to store all the vertices and lines
primitive.
osg::Geometry
