Hi Sean, Thanks very much. I will try is later.
Best Regards Jordon Wu 2016-02-25 3:25 GMT+08:00 Sean Harmer <s...@theharmers.co.uk>: > 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>: > >> 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> >> 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 >> listInterest@qt-project.orghttp://lists.qt-project.org/mailman/listinfo/interest >> >> >> >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> >> > >
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