Take a look at the objective-c implementation of the resetView method, it
should set a dirty flag, indicating that the view should re-render. So you
should set that flag, but don't call resetView because that will move the
camera back to the default view position.
Pat
On Fri, Feb 8, 2013 at 11:54 AM, shamsudheen <shamsutk87 at gmail.com> wrote:
> Hi Pat,
>
> Is there any way to update/display the angle changes *
> on 3D object without calling
> * *[**self->glView resetView];*
>
> Because the call re-sets the 3D model to the default size when it zoomed
> out.
>
> Thanks
>
>
>
> On Feb 7, 2013, at 6:43 PM, shamsudheen wrote:
>
> Hi Pat,
>
> This one rotated fine on Y-axis
>
> vesKiwiPolyDataRepresentation* polyDataRepresentation =
> self->renderer.app->getKiwiPolyDataRepresentation(0);
>
> vesSharedPtr<vesActor> vesActor = polyDataRepresentation->actor();
>
> vesVector3f center = vesActor->center();
>
> vesVector4f angleAxis;
>
>
> angleAxis[0] = center[0];
> angleAxis[1] = 1;
> angleAxis[2] = center[2];
> angleAxis[3] = angle * (M_PI/180.0);
>
> vesActor->setRotation(angleAxis);
>
>
> Then
>
> *
> I have called
>
> [self->glView disableRendering];
> *
>
> [self->glView resetView];
>
> *
> [self.glView setDiffrentAngle:30];
> [self->glView enableRendering];
> *
>
>
>
>
> Thanks for you all effective responds.
>
>
>
> On Feb 7, 2013, at 5:05 PM, shamsudheen wrote:
>
> Hi Pat,
>
> Thanks again,
>
> As per your replies, I have wrote the code in *vesKiwiViewerApp* to
> retrieve* **vesKiwiPolyDataRepresentation*
>
> The code is
>
> vesKiwiPolyDataRepresentation*
> vesKiwiViewerApp::getKiwiPolyDataRepresentation(int itemIndex)
> {
> return
> dynamic_cast<vesKiwiPolyDataRepresentation*>(this->Internal->DataRepresentations[itemIndex]);
> }
>
>
> and I have wrote the code in *EAGLView *class as
> *
> *
> *
> -(void)setDiffrentAngle:(float)angle
> {
> vesKiwiPolyDataRepresentation* polyDataRepresentation =
> self->renderer.app->getKiwiPolyDataRepresentation(0);
>
> vesSharedPtr<vesActor> vesActor = polyDataRepresentation->actor();
>
> vesVector3f center = vesActor->center();
>
> vesVector4f angleAxis;
>
> angleAxis[0] = center[0];
> angleAxis[1] = center[1];
> angleAxis[2] = center[2];
> angleAxis[3] = angle * (M_PI/180.0);
>
> vesActor->setRotation(angleAxis);
>
> }
>
> then I have called
>
> [self->glView disableRendering];
> [self.glView setDiffrentAngle:30];
> [self->glView enableRendering];
>
>
> *
> *
> The changes are not effecting the 3D mode now on the screen.How could I
> update the angle changes on 3D object ?
>
>
> First I would like to know about my implemntation.is it looks perfect ?
> after apply the code, if I rotate the 3D modal through hand, it seems
> zoomed in.
>
> Any help on this is appreciated.
>
>
> *
> *
> *
>
> On Feb 6, 2013, at 4:25 AM, Pat Marion wrote:
>
> The version of vesKiwiViewerApp in the master branch doesn't provide a way
> to access the representations that are loaded via the loadDataset(filename)
> method. You could modify vesKiwiViewerApp to provide an accessor to the
> internal representations, or implement your own data loading method. If
> you grab the version from the stage/kiwi-update branch then you'll find an
> accessor method dataRepresentations() that returns the list of reps, but
> there isn't a mapping from filename to representation object, that logic
> would be up to you to implement. I highly recommend deriving your own app
> class based on vesKiwiViewerApp and implement your own data loading methods
> so that you have full control over your models, the loadDataset(filename)
> is useful for a basic app, but once you do something more advanced you
> definitely want to write your own app class.
>
> Pat
>
>
>
> On Wed, Feb 6, 2013 at 8:13 PM, shamsudheen <shamsutk87 at gmail.com> wrote:
>
>> Thanks again for the quick reply .
>>
>> I think , this is what you mentioned.
>>
>> *vesSharedPtr<vesActor> actor = vesKiwiPolyDataRepresentationPtr.actor();
>> *
>> *actor->setRotation(angleAxis);*
>>
>> However now I'm unable to get *vesKiwiPolyDataRepresentation* pointer.
>>
>> I have just used *bool loadDataset(const std::string& filename);* method
>> to load my 3D file.this is a* *vesKiwiViewerApp.h class method.
>>
>> How can I get the *vesKiwiPolyDataRepresentation* pointer ? could you
>> please help on this.
>>
>> Thanks again for the quick ,professional and effective responds.
>>
>>
>> On Feb 6, 2013, at 3:19 AM, Pat Marion wrote:
>>
>> Instead of adjusting the camera, you should set a transform on the
>> vesActor object associated with your model.
>>
>> You can access the vesActor from the vesKiwiPolyDataRepresentation for
>> your model, if you are using that class in your app.
>>
>> For example code, please see the implementation of
>> vesKiwiDataRepresentation::setTransformOnActor().
>>
>> Pat
>>
>> On Wed, Feb 6, 2013 at 7:10 PM, shamsudheen <shamsutk87 at gmail.com> wrote:
>>
>>> Hi All,
>>>
>>> I have successfully built the *VES/Kiwi* and have rendered one 3D obj
>>> in to my* iPad* application from a *.obj* file.
>>>
>>> Im using *vesKiwiViewerApp* in my application.The Gestures are working
>>> and the 3D model is rotating well.
>>>
>>> *Now I would like to rotate my 3D modal/object through programmatically.
>>> *
>>>
>>> I have to rotate my 3D object to the following angles,, *
>>> 30º,60º,90º,120º,150º,180º,210º,240º,270º,300º,330º,360º*
>>>
>>> So I have wrote the code as below to rotate the 3D object in to 30º
>>>
>>> vesVector3f cameraPosition (30, 0, 1);
>>> self->renderer.app->setCameraPosition(cameraPosition);
>>>
>>> Its rotated.However not exactly to the 30º and the 3D model is zoomed
>>> out.
>>>
>>> My screen size is *(400, 400).*So the console window displayed the
>>> following when 3D model renderes
>>> *
>>> *
>>> *resize(400, 399)*
>>> *x:0.000000 y:0.000000 z:-1.000000*
>>> *x:0.000000 y:0.000000 z:-439.917145*
>>> *
>>> *
>>> So I have set the camera position as
>>> *
>>>
>>> *
>>> vesVector3f cameraPosition (30, 0,-439.917145);
>>> self->renderer.app->setCameraPosition(cameraPosition);
>>>
>>> Now the zoom is correct and the 3D model is rotated.However not exactly
>>> to 30.
>>> **
>>>
>>> *My target is to rotate the object in different angles.how can achieve
>>> this?*
>>>
>>> Is it possible to access the rendered 3D object and set the positions
>>> instead of using the camera ?
>>>
>>> Any help on this is appreciated.
>>>
>>> Thanks
>>>
>>>
>>>
>>
>>
>>
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/ves/attachments/20130213/020e7433/attachment-0001.html>