[info-performer] pfvMousePicker doubt

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From: pramod (pramod++at++students.iiit.net)
Date: 03/28/2004 07:34:47

hi Performers,

I need a clarification regarding the use of pfvMousePicker class.

I am using the class to select objects in the scene with the mouse. I am
able to do the picking correctly when the scene is being drawn using a
single channel.

This is how my rendering loop looks:

while(t < 2000000000000)
{
                // Go to sleep until next frame time.
                pfSync();

                // Get mouse events.
                pfuGetMouse(&m_mouse);

                // Initiate cull/draw for this frame.
                pfFrame();

                // Compute new view position.
                t = pfGetTime();

                // Interaction.
                m_Picker->update();

                // Get mouse clicks and GUI events.
                pfuGetEvents(&m_pfevents);

                pfuUpdateGUI(&m_mouse);
}

But, this rendering code gives the following error when i use it for
stereo rendering using two channels. I am using left and right channels,
with left being the master, and using offsets for both the channels as
given in the /usr/share/Performer/src/pguide/libpf/C/stereo.c. Please
suggest what is wrong and what i need to do in order for picking to work
with two channels.

P.S: The code is not working even when the stereo is disabled and i am
drawing to only a single channel.

Following is the error that i am receiving:

----------------------------------------------------------------------
PF Notice: pfuDrawStringPos - bad font handle in pid
22829
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.
PF Warning/Usage: pfGetChanSize() NULL pfChannel*.
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.
PF Warning/Usage: pfGetChanSize() NULL pfChannel*.
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.
PF Warning/Usage: pfGetChanSize() NULL pfChannel*.
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.
PF Warning/Usage: pfGetChanSize() NULL pfChannel*.
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.
PF Warning/Usage: pfGetChanSize() NULL pfChannel*.
PF Warning/Usage: pfGetChanOrigin() NULL pfChannel*.

------------------------------------------------------------------------

Please give your valuable suggestions,
Pramod.

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