[osg-users] Set Viewport background color as transparent

Hi, I am using the OSG, but I unable to set the viewport or view backgraund color as transparent. Please help me to resolve this issue. Thanks Vishwa ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo

[osg-users] Set Viewport background color as transparent

Hi, I am trying to implement the 3D overlay above current view. I am trying to set the camera background color as transparent. I am using following code. osg::Node* node= osgDB::readNodeFile( "Models/cessna.osg"); osg::Camera* camera = new osg::Camera; camera->setViewport( 0, 0, 200, 200 ); camer

Re: [osg-users] Set Viewport background color as transparent

Hi Vishwa, today when I was updating my OSG I just realized that I was using a modified version of GraphicsWindowIOS... that's why transparency was working with that code. You can achieve the same result with the original GraphicsWindowIOS by calling this code before setting the traits: Code

Re: [osg-users] Set Viewport background color as transparent

Hello Vishwa, Can you please elaborate what you are trying to achieve? You can set the viewers camera's clear color with an alpha value less than one. (.setClearColor(r,g,b,a)) But I (and possibly others) don't understand what you are trying to do with this, as the background is basically drawn

Re: [osg-users] Set Viewport background color as transparent

Hi Shekhar, to set a transparent background you have to enable alpha when you set your traits When you set the graphic context traits osg::ref_ptr traits = new osg::GraphicsContext::Traits; you can just add the line to your configuration: traits->alpha = 1; after you create a graphicc

Re: [osg-users] Set Viewport background color as transparent

Hi Shekhar, On 2 June 2012 12:30, shekhar vishwa wrote: > I am using the OSG, but I unable to set the viewport or view backgraund > color as transparent. Do you actually mean that you want it completely transparent? As in disable the clear of the colour buffer completely? If so then use the Cam

Re: [osg-users] Set Viewport background color as transparent

Hi, Thanks for help. Now I can make the camera background as transparent. What parameters need to set the camera background as semi-transparent. Please help me. Thanks Vishwa ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.op

Re: [osg-users] Set Viewport background color as transparent

Hi Vishwa, On 4 June 2012 20:49, shekhar vishwa wrote: > Thanks for help. Now I can make the camera background as transparent. What > parameters need to set the camera background as semi-transparent. What do you mean by semi-transparent background? Everyone has given you as much guidance as can

Re: [osg-users] Set Viewport background color as transparent

Hi, I want to show the models on semi-transparent backgroud color. I have implemented following code camera1->setViewport( 0, 0, 200, 200 ); camera1->setClearColor( osg::Vec4(0.0f, 1.0f, 1.0f, 0.5f) ); camera1->setRenderOrder( osg::Camera::POST_RENDER ); camera1->setAllowEventFocus( true );

Re: [osg-users] Set Viewport background color as transparent

Hi Draw semitransparent quad in ortho projection before your models. With clear color disabled. Cheers. 05.06.2012, 08:01, "shekhar vishwa" :Hi, I want to show the models on semi-transparent backgroud color.  I have implemented following codecamera1->setViewport( 0, 0, 200, 200 );camera1->setClearC

Re: [osg-users] Set Viewport background color as transparent

Hi Vishwa, You still don't explain what you mean by a semi-transparent background colour, given what replies you've already had and you've tried it suggest to me that you really are talking about something different as what you are asking really doesn't make sense in an normal graphics application

Re: [osg-users] Set Viewport background color as transparent

I thin you can try to set the clear mask alpha channel to a value of 0.5 cheers, John On Jun 4, 2012, at 9:49 PM, shekhar vishwa wrote: > Hi, > > Thanks for help. Now I can make the camera background as transparent. What > parameters need to set the camera background as semi-transparent. >

Re: [osg-users] Set Viewport background color as transparent

I think Vishwa wants to do something similar to what I am currently doing in iOS. I set transparent background in order to see some layer that is below, which in my case is the image coming from the videocamera. Anyway it would be helpful if Vishwa you can explain us better the purpose of your a

Re: [osg-users] Set Viewport background color as transparent

Hi, I am trying to implement the multiple views in same window. Each view render the diffrent models.User can set the view position at run time by mouse dragging. If dragged view is overlapped with any view then dragged view backgroud should be semi-trasparent. Please suggest me to resolve this.

Re: [osg-users] Set Viewport background color as transparent

Hi Vishwa, On 6 June 2012 05:46, shekhar vishwa wrote: > I am trying to implement the multiple views in same window. Each view render > the diffrent models.User can set the view position at run time by mouse > dragging. If dragged view is overlapped with any view then dragged view > backgroud sho

Re: [osg-users] Set Viewport background color as transparent

Hi Vishwa, the only way I can help you is giving you my code of initialization: Try to adapt it for non your platform. variables of instance: osg::ref_ptr _viewer; osg::ref_ptr _root; - (osg::ref_ptr)createGraphicContext { //create our graphics context directly so we can pass our own window

Re: [osg-users] Set Viewport background color as transparent

Hi, I have implemented above code but it does not make the viewport background transparent. I want to see the underlying views being the viewport. Thanks Vishwa ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.o