Hi,
Wally Atkins wrote:
Hi jp,
Thanks for the reply. I see that the osgprerender does spin the model
and I made a stab at putting in the osgDB::writeImageFile but I must
be at the wrong place ... because the output (PNG) that I got was
just a full white image.
In the function createPreRenderSubGraph() I went to the if (useImage)
block and added the writeImageFile() call there ... that must not be
the appropriate place though.
Also, I see in the createPreRenderSubGraph() function a variable
named "noSteps" which I am assuming determines the number of steps to
take in order to perform the 360 around the model. What I would like
to do is use that count ... somehow ... to number the images
accordingly as the snap shots around the model.
The cow is actually spun using an AnimationPathCallback attached to
loadedModelTransform. You could either try to get the angle from the
AnimationPathCallback or you could just attach the model to your own
transform that you control manually. You would then need to pass this
angular value to MyCameraPostDrawCallback. You could start by using a
global variable and then refine it, there are multiple options.
I just tried adding the writeImageFile() into the
MyCameraPostDrawCallback and got at least a resemblance of the model
in the resulting image file. I'm really not sure of the best way to
go about this so any further tips would be greatly appreciated.
Yes, the writeImage should go into MyCameraPostDrawCallback, you could
remove the image modification in the callback or put the write before
the image is modified.
jp
Thanks, Wally
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