Hi Jordan,
On 24/02/2016 02:27, Jordon Wu wrote:
Hi Sean,
This is a cool 3d demo(https://www.youtube.com/watch?v=zCBESbHSR1k)!
Is this demo using assimp to load 3d model or using gltf to load 3d
model ?
Nope, each sub mesh is in it's own OBJ file which we load using the Mesh
component. So in essence what we have is a scene graph hierarchy of
RenderEntity's which look something like this:
Entity {
id: root
property alias translation: transform.translation
property real scale: transform.scale
property Mesh mesh
property Material material
property Layer layer
Transform {
id: transform
translation: Qt.vector3d(x, y, z)
}
components: [
mesh,
material,
transform,
layer
]
}
And then when we instantiate them they look like:
// LEFT DOOR
RenderEntity {
mesh: leftDoor
material: materials.doorPaint
layer: carLayer
y: 0.5 * root.explodeProgress
x: 1 * root.explodeProgress
RenderEntity {
mesh: leftDoorGlass
material: materials.window
layer: carLayer
}
RenderEntity {
mesh: leftDoorHinge
material: materials.darkPlastic
layer: carLayer
}
RenderEntity {
mesh: leftDoorMirror
material: materials.trim
layer: carLayer
}
RenderEntity {
mesh: leftDoorOpener
material: materials.aluminium
layer: carLayer
}
RenderEntity {
mesh: leftDoorInnerLower
material: materials.salonDevicesPlate
layer: carLayer
}
RenderEntity {
mesh: leftDoorInnerUpper
material: materials.salonMaterial
layer: carLayer
}
}
where for e.g. mesh: leftDoor just refers to a Mesh property elsewhere
in the scope.
BTW, Are you open this demo source code to public? Thanks
I can't publish it just yet as we can't distribute the model itself so I
need to strip that out. Hopefully soon though.
Sean
Best Regards
Jordon Wu
2016-02-23 15:58 GMT+08:00 Sean Harmer <s...@theharmers.co.uk
<mailto:s...@theharmers.co.uk>>:
Hi,
On 23/02/2016 07:04, Jordon Wu wrote:
Hi list all,
I'm begin study qt3d(qt5.5 version) now. And I want to found some
examples about 3d model mesh and sub mesh operation.
I google found a good example QtQuick3D Tutorial - Car3D (
http://www.youtube.com/watch?v=VvQ_NHKtHwE ), but this qt3d is
V1.0 and the example did not run on qt3d 5.5 or later.
Has anyone know where could found example about qt3d to operate
3d model mesh and sub mesh like above Car3D examples ? Thanks
Well, in making of this car demo,
https://www.youtube.com/watch?v=zCBESbHSR1k we simply exported the
submeshes we needed explicit control over as separate obj files
and loaded each one usign a Mesh component aggregated to an
Entity. Each Entity has it's own Transform component that we then
bind properties to QML expressions that reference the Qt Quick
Controls, e.g. slider values or boolean switches.
You can also have all meshes in a single OBJ file and reference
the sub mesh you wish to render in the Mesh component. We tried
this but found it to be better to split them out as it allows more
work to be done in parallel at start up, leading to faster startup
times.
Cheers,
Sean
Best Regards
Jordon Wu
_______________________________________________
Interest mailing list
Interest@qt-project.org <mailto:Interest@qt-project.org>
http://lists.qt-project.org/mailman/listinfo/interest
_______________________________________________
Interest mailing list
Interest@qt-project.org <mailto:Interest@qt-project.org>
http://lists.qt-project.org/mailman/listinfo/interest
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
