How to do frame animation with Mojo3D

[FerdiParticipant]

So in mojo you can do simple animation like this:

Monkey

frame += 1 canvas.DrawImage(walkSprites[frame], 0, 0)

1 2	frame += 1 canvas.DrawImage(walkSprites[frame], 0, 0)

In Mojo3D we draw everything using scene.Render.  It seems there are 2 ways to do frame animation.  First way is using meshes and swaping it with a single model, like this:

Monkey

frame += 1 model.Mesh = walkMeshes[frame]

1 2	frame += 1 model.Mesh = walkMeshes[frame]

Second way is to use model making it visible or invisible.  Something like this:

Monkey

walkModels[frame].Visible = False frame += 1 walkModels[frame].Visible = True

1 2 3 4

walkModels[frame].Visible = False frame += 1 walkModels[frame].Visible = True

So which is “correct” way to do this and if you know why, that will be even better?

[EthernautParticipant]

If you’re just trying to load 2D images onto the same plane in 3D, this may help:

https://github.com/DoctorWhoof/spriteTools

The “AnimSprite” class does just that. You can load a sprite sheet and set the frame rate, specify which frames play in which order, etc. Sorry the example file is not helpful, I never updated it to demonstrate animated sprite frames… will try tomorrow night, if that interests you.

[FerdiParticipant]

I have bunch of OBJ files.  I thought I just do frame animation with them, instead of bones.  Don’t waste your time on that.  I am just wondering.

[EthernautParticipant]

Ah, ok. In 3D, the most common is to create your animation within the 3D application you’re using and simply export it to a format that supports animation. Swapping the models is not a usual technique.

[FerdiParticipant]

Lucky I asked.  Thanks Ethernaut.

[Author]

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