Re: [clutter] How to mask two texture
Rakesh Kumar wrote: Hi Samuel, Sorry for late reply I was on vacation. You have asked for two images dummy.png and dummy1.jpg. So for your reference I am attaching two images and Also I am attaching the final out put. Please comment on this. RK. Your dummy.png is quite wholly transparent, that's why the resulting image is also transparent. Here is how it works: the two images are *combined* together, so the RGBA value of the composed image is the 'multiplication' of the two images. (the two images are not displayed one *over* the other). It means that the final image gets the transparency of dummy.png. dummy.png should be a mask : white where your want to see dummy1.png, fully transparent where you want to see the background. (and half-transparent where you want to *add* transparency to dummy1.png) Do you understand ? (my english is not very good...) -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] How to mask two texture
Rakesh Kumar wrote: Thanks for your quick reply.I have just given a thought We are modulating the two images so any way it will get Color of both image.I have tried alpha test also but its not worked. I think I should try some different method. I think you need 3 layers : - the basic image - composed with a second layer to add 'lightning' - composed with a 'scissor' mask Rakesh Kumar wrote: Hi Samuel, Sorry for late reply I was on vacation. You have asked for two images dummy.png and dummy1.jpg. So for your reference I am attaching two images and Also I am attaching the final out put. Please comment on this. RK. Your dummy.png is quite wholly transparent, that's why the resulting image is also transparent. Here is how it works: the two images are *combined* together, so the RGBA value of the composed image is the 'multiplication' of the two images. (the two images are not displayed one *over* the other). It means that the final image gets the transparency of dummy.png. dummy.png should be a mask : white where your want to see dummy1.png, fully transparent where you want to see the background. (and half-transparent where you want to *add* transparency to dummy1.png) These four lines I didn't understand. Do you understand ? (my english is not very good...) -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] How to mask two texture
Rakesh Kumar wrote: Hi Samuel, Now I am getting the masking but its also blended With the stage color. Stage color is coming on masked Image. Any help will be appreciated. Regards, RK. How would you like it to work ? If you have transparency, then you'll see what is displayed behind the transparent part. Or perhaps I do not understand what you're trying to do... -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] How to mask two texture
Rakesh Kumar wrote:
Hi Neil,
I have done like this but I am not getting masking in my program.
Code Snippet:In the loading image
Load_Image()
{
gchar **files;
files = g_new (gchar*, 1);
files[0] = g_build_filename (/home/rakeshk4/Development/Pictureflow/,
Dummy_Alpha_Path.png, NULL);
//path I am geeting from argument
ClutterActor *actor = clutter_texture_new_from_file (path, NULL);
CoglHandle alpha_mask_texture = cogl_texture_new_from_file
(files[0],COGL_TEXTURE_NONE, COGL_PIXEL_FORMAT_ANY,error);
Coglhandle material = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor));
cogl_material_set_layer (material, 1, alpha_mask_texture);
cogl_material_set_layer_combine (material, 1,
RGBA = MODULATE (PREVIOUS, TEXTURE),
error);
I am getting this warning meassage:
cogl_material_set_layer_combine: assertion `cogl_is_material (handle)'failed
I am using this sample.
http://github.com/pmarti/clutter-tutorial/tree/50679e5eb5ebeb9cbfaab99ceacd9e85deabf3bb/examples/full_example
Regards,
RK
Hi
Rakesh Kumar rakesh.ku...@kpitcummins.com wrote:
I have two texture one is rectangular texture and other one contains
alpha texture that is non rectangular texture ,from this i would like
to mask two texture and create new shape texture. How we can do this
in clutter.
You should be able to do this with a custom material on a ClutterTexture
using multi-texturing. Assuming you have your alpha mask texture in a
CoglHandle and your base texture in a ClutterTexture you can do
something like this:
ClutterActor *base_texture = ...;
CoglHandle alpha_mask_texture = ...;
CoglHandle material;
/* Get the material from the Clutter texture */
material =
clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (base_texture));
maaterial = clutter_texture_get_cogl_material (CLUTTER_TEXTURE
(base_texture));
that could fix the error, afaik...
/* Add the alpha mask as a second texture layer */
cogl_material_set_layer (material, 1, alpha_mask_texture);
/* Set the combine function so that the base texture is modulated by the
alpha component of the mask texture */
cogl_material_set_layer_combine (material, 1,
RGBA = MODULATE (PREVIOUS, TEXTURE[A]),
NULL);
If you need picking to work as well then you would need to subclass
ClutterTextue and override the pick method so that it draws a solid
rectangle masked by the alpha texture in a similar way.
You may want to take a look at Mutter¹ which does a similar thing to
support shaped windows.
- Neil
¹ http://ho.io/ck29
--
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Re: [clutter][win32]
On 26/10/2009 09:24, Konstantin Salavatov wrote: Hello! I've got assignment to evaluate Clutter features and abilities. Our goal: showing several video files (or streams) simultaneously with some some 3D and 2D effects applied. Like folding pages, rotating, transparency changing etc. Something like what WPF/Silverlight can do. I was able to build v.1.0.8 using instructions from http://www.busydoingnothing.co.uk/blog/2008/07/13#ClutterWin32 but no one test run. All are stopped by not being able to locate some entry point in Cairo. Also version 0.8.0 mentioned in the build guide does not even build successfully. I've used MSys environment. So my questions: 1) is Clutter already able to suit our needs? Is it already stable enough? 2) where is build/msvc_2k5/ directory mentioned in the stable build of Clutter reference manual? 3) where is .net support mentioned by listing c# on the title page of clutter-project? Is generating interop assembly already implemented? 4) where I can get good and proven build guide for current version of Clutter for *fresh* xp build environment not yet enchanted by unix magic tools. Thanks, Kostya I've got a VS2008 build environment, based on OAH Build Team work. Building all libs needed for Clutter is a bit complex, but I could provide them if you need (I use master dev branch of Clutter). Compiling one Clutter application is however quite simple. If you're interested, you can contact me. -- Samuel Degrande LIFL - UMR8022 CNRS - INRIA Futurs - Bat M3 Phone: (33)3.28.77.85.30 USTL - Universite de Lille 1 (33)3.62.53.15.70 59655 VILLENEUVE D'ASCQ CEDEX - FRANCE [CA certs: http://igc.services.cnrs.fr/CNRS-Standard/recherche.html ] -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] WHERE IS clutter_sini?
On 03/09/2009 10:33, Jianchun Zhou wrote: Dear Samuel: You said you are now porting clutter toys to clutter 1.0, have you ever successfully port one of the toys named odo? I did not have to port it, because Chris Lord already did it : http://chrislord.net/files/clutter-animations-talk.zip The new odo toys is in the 'demo' dir. Regards. -- Samuel Degrande LIFL - UMR8022 CNRS - INRIA Futurs - Bat M3 Phone: (33)3.28.77.85.30 USTL - Universite de Lille 1 (33)3.62.53.15.70 59655 VILLENEUVE D'ASCQ CEDEX - FRANCE [CA certs: http://igc.services.cnrs.fr/CNRS-Standard/recherche.html ] -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] clutter_actor_animate ()
On 13/08/2009 01:41, Ian Walberg wrote: Neil, Thanks that helps. However I am getting this following error :- 'Cannot bind property '' objects of type 'ClutterTexture' do not have this property' When I try the rotation example :- clutter_actor_animate (actor, CLUTTER_EASE_IN, 100, rotation-angle-z, 360, fixed::rotation-center-z,center, NULL); Thanks Ian I was caught by such an error several times !! You have to take care to provide the right type of values. So you need, for example clutter_actor_animate (actor, CLUTTER_EASE_IN, 100, rotation-angle-z, 360.0, fixed::rotation-center-z,center, NULL); This is rather very annoying, because we are so used to implicit type conversion... -- Samuel Degrande LIFL - UMR8022 CNRS - INRIA Futurs - Bat M3 Phone: (33)3.28.77.85.30 USTL - Universite de Lille 1 (33)3.62.53.15.70 59655 VILLENEUVE D'ASCQ CEDEX - FRANCE [CA certs: http://igc.services.cnrs.fr/CNRS-Standard/recherche.html ] -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
Re: [clutter] WHERE IS clutter_sini?
On 13/08/2009 11:17, Jianchun Zhou wrote: Hello, guys: In version 1.0 I found some functions and maros were gone, like: clutter_sini clutter_cosi CFX_MUL Any idea where they are? Thanks a million! -- Best Regards As far as I know, the Fixed Point API was removed, and clutter now use floating point values internally. So, once again AFAIK, you juste have to replace, for example : clutter_sini(v*512) by sin(v*M_PI) and so on... CFX_MUL(a, b) by a * b you can also remove any float - fixed point conversions. This is at least what I did on the clutter toys to adapt them to 1.0 API. I let clutter core developers to correct me if I'm wrong... -- Samuel Degrande LIFL - UMR8022 CNRS - INRIA Futurs - Bat M3 Phone: (33)3.28.77.85.30 USTL - Universite de Lille 1 (33)3.62.53.15.70 59655 VILLENEUVE D'ASCQ CEDEX - FRANCE [CA certs: http://igc.services.cnrs.fr/CNRS-Standard/recherche.html ] -- To unsubscribe send a mail to clutter+unsubscr...@o-hand.com
