I'm new to SceneKit and trying to make a basic scene in the scene editor. I don't have any code written because I'm trying to do this all visually for now.
I have a tree that I made in Blender, and it has bones in it. I made a new scene and set the tree physics to dynamic and added a turbulence field, but the bones don't seem to do anything even with the turbulence field added.
Can someone point me in the right direction? All I'm trying to do is make the tree blow with the wind.
Here's a screenshot of the editor, I can provide the DAE file if needed.
Related
I textured an object in Blender because it wouldn't texture properly in Unity, and then imported the object and texture to Unity.
I don't know how to fix this, I'll put both pictures here.
Blender Texture Before Import
Object In Unity
Okay, so based on your screenshots..
You're going to select everything then add a modifier called "Solidify", then set this to something very small like .03. (Unity doesn't like objects that are just planes).
double check all your normals are facing out. Let me know if you don't know how to do this...
Go into edit mode select all edges, then right click, select "mark as seam".
Open UV editor window (should be split screen with Edit mode on one side, UV view on the other). In the Edit side select all, then go to UV dropdown menu and click "unwrap". You should then see your object unfolded into flat planes over on the UV window side. There's different unwrap options, like smart UV unwrap, etc. I think just "unwrap" has worked for me, but play around and there may be something that shows your object shapes in a less distorted way..
At this point, since your pattern is basically repeating. If you export the OBJ file and take it into unity, and you add the image file (make sure it's dimensions are perfectly square) it should receive the image file as an Albedo texture much better than in your screenshots. You can play with the 'tiling' and "X/Y offset" till it looks right (you might face issues with rotation though.
BUT
If you want to line it up very specifically, you can export the UV layout as a png from the UV window in blender. Then use photoshop or another photo editor to change/rotate and arrange your texture so the sides line up properly. In blender in the Edit window (assuming you still have both UV + editor open) when you select a side it will highlight in the UV window the corresponding flat plane, based on this you should be able to figure out what should be rotated up/down, etc. Then when you change that 2d image and drag it into Unity, it will adjust and wrap around the object.
I'm pretty new to both, but the advice I've been given is to not do the texturing in blender, but instead to do it in Unity.
This is a 10-month-old post but incase anyone is curious or struggling the same, Blender exports models with a scale of 100 so you need to scale up the tile of the material (in material settings) to see it.
This is a bad solution however because then you are not working with objects on a scale of 1 so you actually want to check "Apply transformations" when exporting the FBX model in blender
I'm trying to import an 3D-Model which I have created with blender.
My goal is to resize the 3D Frame accordingly programmatically with the help of an armature.
I could achieve this within blender but unfortunately when importing the .dae file in Xcode it looks like one location modifier was not applied...
Underneath the described behavior:
BLENDER
XCODE
Does have anybody an answer to this problem?
Thank you in advance!!!
Modifiers and constraints use code within blender to perform their functionality. These don't export to other apps. You will need to either find a way to make it work without modifiers or make your xcode project move multiple bones at the same time.
The error you are getting is from having one chain of bones, the side bones are children of the bottom bones, so both of them move as you move their parents.
If you are exporting pre-set animations to use in your app, then you can export the animations with the modifier actions baked into the final animation. If you are dynamically moving the bones in your app, you will need to move multiple bones together.
You can have two chains of bones from the one root bone, like having a left and right arm of a character parented to the spine. In xcode you then need to move the lower side bone at the same time as the bottom bones as well as the left bottom bone to move sideways with the side bones.
I want to add a physics body to a node in the scene edit by spritekit editor, any one can show me how?
ps: I can add physics body to a sprite, it works fine, but to node, code is the only works way by now.
I don't think you can via the Scene Editor but I am not sure why you can't, given the SKPhysicsBody is a property of SKNode and not SKSpriteNode.
You could try:
Creating a sprite with a transparent texture.
Doing it in code.
The scene editor is very lacking and in my game I am seriously considering writing a custom editor to overcome the limitations.
I'm currently trying to export an animated blender model to three.js using the exporter of three.js (github.com/mrdoob/three.js/tree/dev/utils/exporters/blender/2.66/scripts/addons).
I've created a model including bones and weights and a tiny animation.
The problem I have: The model gets broken. Somehow the bones don't rotate around their origin but around the origin of the root bone. Moving the bones manually does not make a difference.
I followed these tutorials:
devmatrix.wordpress.com/2013/02/27/creating-skeletal-animation-in-blender-and-exporting-it-to-three-js/
dev.mothteeth.com/2012/10/threejs-blender-exporting-skeletal-animations/
I have:
Deleted the Armature
Checked the Vertex Groups
Keyed all bones in the first and last frame.
I've been to pretty much every thread I could find on github and stack overflow. These seem to be the main issues for these errors. But I guess I still miss any point. :(
I have uploaded all files including the blender files and exported animation.
http://www.file-upload.net/download-8068001/forum-files.rar.html
Any suggestions?
Thanks a lot in advance.
The problem was that the location/rotation/scale were not reset before exporting the model.
Before You export Your model, select the mesh and press CTRL+A and select location. Repeat for rotation and scale, then select the armature and do the same. Now it works.
I've downloaded both the tutorial package and your code. The code aspect looks fine. So looking over the model I see that your vertex groups are not well defined. When I select the Left_collarbone bone, left_upperarm, left_lowerarm I seem to be getting vertices from parts of the torso, head, etc... in the mix. I suspect that what your seeing with your funky shoulder stretch animation is that the collarbone is part of some other groupings and when exported the "weights" of the mesh are confused causing the bone to pull badly on the mesh. Try cleaning up the vertex groups and see if that helps. #lukasz1985 has the right idea, nice one! +1
P.S. Thanks for the link to the cool animation tutorials for Three.js :)
I had an issue where calling THREE.GeometryUtils.center(geometryWithBones) on a the newly imported geometry would make all the skinning look very strange. Getting rid of that fixed things.
Also make absolutely sure, that the three.js blender exporter is not set to to align your model in any way. (I had it set to "center" and it took me 4 hours to figure out why my bones rotate around some spot that was NOT the spot they rotate around in blender.)
I'm trying to create, modify and update (directional only for now) lights and shadowmaps dynamically. The light, shadow and shadow camera helper gets updated correctly as I move the light around or change shadow properties, except from the light's point of view, everything behind the origin (0,0,0) is shadowed for no apparent reason.
Screenshots:
http://i.imgur.com/n4AHvle.png
http://i.imgur.com/l0uaZHD.jpg
http://i.imgur.com/brKwCof.jpg
http://i.imgur.com/a6dqMGo.jpg (new, with spotlight)
You can see a scene with car and a piece of ground, they belong to a geometry imported with ColladaLoader. The problem is with shadowmapping, the car throws shadow correctly, but there are stripy shadows on the ground even though there is nothing else than the car obscuring light.
If I add more similar lights, they also have the same 4 stripes. They also appear with spotlight. If I change shadow map resolution, the stripes' size changes relative to each other, but there seems to be always four of them, spaced from center to both directions.
EDIT: JSFiddle here: http://jsfiddle.net/cL3hX/1/ There shouldn't be any shadows in the scene, unless some new geometry is introduced inside the shadow camera frustum.
Couple of notes on the fiddle:
I have r55, but the demo is r54 because jsfiddle apparently does not yet have r55.
I could only reproduce this with a Collada file. So it probably has something to do with the model. I created a simple cube in Sketchup 8, and tried to export it with various collada options.
In the JSFiddle I could only reproduce the bug with a file exported with "doublesided faces" -setting enabled. In my own application code, I do have the same bug on models created with or without that setting enabled, but in the fiddle, the bug seems to be triggered only when "doublesided faces" are exported. Anyway I do need to somehow show backsides of faces, because the tool I'm developing must work with Sketchup exports, and it's very hard to make models in Sketchup without having a mess of frontsides/backsides visible.
The very simple Collada file is included in the JSFiddle as javascript variable. Here's a download link for the same file: https://dl.dropbox.com/u/14489569/shadowmapdemo.dae
The problem is your Collada model.
Your "plane" is actually multiple coplanar faces back-to-back in a single geometry.
It's no wonder there are artifacts.
Replace it with a THREE.CubeGeometry.