Hi,
On 19/04/2017 01:20, Ch'Gans wrote:
On 18 April 2017 at 22:58, Sean Harmer <sean.har...@kdab.com> wrote:
Hi,
On 18/04/2017 10:10, Ch'Gans wrote:
Hi there,
I have just tried the sky box entity with Qt-5.9-beta, and found a
small problem:
If you don't specify a basename or if the basename is malformed, the
GUI will freeze.
As the documentation doesn't specify that the basename should be in a
QUrl compatible format, I stupidly set the basename to
'/somewhere/basename', it's only after looking at the source that i
realised that. Using 'file:///somewhere/basename' fixed the problem.
Shouldn't the documentation be updated to reflect that? Maybe simply
replacing 'basename' with 'baseUrl' would give the right clue to the
user, along with plainly saying that basename + suffix + extension
should form a string that can be used with QUrl.
I'm actually tempted to avoid the entire issue and just require that the
user provide a QAbstractTexture object that contains a cubemap texture
target. It's trivial to do this with a dds file already but we can add a
convenience helper if you want to be able to build a cubemap texture object
from a set of 2D images. That will make the API minimal and complete by
Well, how QSkyBox could be more minimal, I was able to add a sky box
to my scene with just 3 lines of code!:
auto skyBox = new QSkyBox(rootEntity);
skyBox->setBasename(...);
skyBox->setExtension(...);
Well I'm thinking of something like:
auto skyBox = new QSkyBoxEntity(rootEntity);
skyBox->setTexture(QTextureLoader("mycubemap.dds"));
or
skyBox->setTexture(QTextureCubeMap::fromImages("basename", "extension"));
or
QVector<QImage> faces = { posx, negx, ... };
skyBox->setTexture(QTextureCubeMap::fromImages(faces));
delegating the complexity to other classes such as QTextureLoader.
I had a quick look at DDS, this looks interesting, but requires some
extra tooling if I'm not wrong. For novice like me and certainly for
quick prototyping and or debugging, an API similar to the current one
is very convenient indeed.
There are plenty of tools for building multi-image dds/ktx files already
but we are looking at shipping something along with Qt 3D in the future.
Cheers,
Sean
Chris
Thanks for the feedback.
Sean
Thanks,
Chris
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--
Dr Sean Harmer | sean.har...@kdab.com | Managing Director UK
KDAB (UK) Ltd, a KDAB Group company
Tel. +44 (0)1625 809908; Sweden (HQ) +46-563-540090
Mobile: +44 (0)7545 140604
KDAB - Qt Experts
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