I'm trying to carefully word this question because the problem doesn't appear to be that the animation isn't being imported. I can see the animation as <untitled animation> in the scene graph, and I can play the animation in Xcode; the issue is then locating the animation as an attribute to any of the objects. This is what I can see in the scene graph:
But, when I try and locate the animation here:
... nothing appears. So, it seems that it isn't importing the animation as a CAAnimation object with a key.
I have tried to programmatically enumerate through the child nodes to find any CAAnimation objects, but it doesn't see any. Other scenes work perfectly however.
What do I need to add to the DAE file to get it to build the CAAnimation object properly?
Worth pointing out that the 3D model and animation was exported from 3DS Max using OpenCollada. I don't know what the best practices are for exporting collada to SceneKit, and if anyone has any useful information that would be great. Apple don't seem to have anything.
The SceneKit editor in Xcode does not display the root node in the scene graph view, and it might be the one that holds the animation.
You should be able to retrieve the root node's animation programmatically.
Related
So I'm using React, Three Fiber as well as the drei library and cannon for physics.
I am making an apartment viewer as a personal project in which you can walk around in - so far everything works fine. To make it later on possible to load in the apartment model from a database (and make the creation process easier for multiple models), the transformations for the light switches, aktivatable point lights and the apartments collision boxes are copied from objects within the gltf file.
To prevent the collision boxes from rendering or otherwise effecting the rendering process, they are made invisible. (I also tried to set child.castShadow = false with no effect).
For some reason the shadows are corrupted: unwanted point light shadows.
I also tried to change some properties of the original child: Object3D properties in the Apartment component (the only place where the boxes could affect the shadows), without changing results.
Another thing is that there doesn't seem to be any options to adjust shadows anymore. Properties like shadowBias, shadowMapWidth etc. are deprecated. By hovering over it I get something like #deprecated — Use shadow.mapSize.width instead. At least I couldn't find a solution to that, also because the Three Fiber documentation isn't that extensive. Just using them doesn't work either.
I'm trying to create a viewer in react-three-fiber with react-three/drei where I can switch between OrbitControls and TrackballControls.
The problem is that when switching from TrackballControls to OrbitControls, the axis that the camera rotates around changes as of course the TrackballControls change the up-vector when moving around.
I created a couple of minimal examples in codesandbox to explain my approach to solve this and to show where I'm stuck.
Base Case
This shows the initial attempt to switch between the different control types:
https://codesandbox.io/s/r3f-camera-controllers-base-neu07
Attempt #1
Obviously, this does not work as it is, so I tried resetting the up-vector to (0, 1, 0) and calling lookAt(). This seems to work initially as the camera reorients itself correctly (this is how it should look like). However, it does not rotate around the correct axis and instead moves in strange arcs. See here:
https://codesandbox.io/s/r3f-camera-controllers-set-up-vector-yps4k
Attempt #2
For this question it was suggested to create a new camera which I also tried but ultimately it lead to the same result. This here is my attempt at creating a new camera and copying some values to the new camera:
https://codesandbox.io/s/r3f-camera-controllers-reset-camera-3cih0
Any help appreciated. Thanks!
After a couple of days, I finally figured out a way to achieve what I want.
Instead of trying to remove the different controls, I just enable and disable them separately. I can then call the reset() functions on both Controls via a ref if the control prop changes. To retain the camera position, I can just temporarily store it before resetting the controls.
You can find an example here.
I'm a long-time user of SciChart, but it's an old version (3.1). I've just started using FastHeatMapRenderableSeries for the first time, and there is a requirement for a user to alter the chart's gradient stops. I've implemented a UI to do this (see image), which involves dragging markers that updates their respective gradient stop within the ColorMap's LinearGradientBrush. It's working in as much as gradient changes can be seen in the chart's HeatColorMap (not shown on this screenshot), and also in my "drag" control (a Rectangle whose Fill is bound to the ColorMap's brush).
The problem is that the colours within the chart itself don't change - perhaps I was being a little too hopeful that this would happen automatically! Is this possible, or will I have to recreate the series each time there has been a change to the gradient?
We actually have this working in a later version of SciChart. Im not sure which version exactly but it was introduced at some point. Have a look at this forum post which discusses a bug in the heatmap color map binding in v5.
In the v6 examples suite, you can drag the heat map legend and recolour the chart automatically, so we know in principle this works.
Very cool image by the way!
I need to display many markers on a WPF image. The markers can be lines, circles, squares, etc. and there can be several hundreds of them.
Both the image source and the markers data are updated every few seconds. The markers are associated with specific pixels on the image and their size should be absolute in relation to the screen (i.e. when I move the image the markers should move along with it, but if i zoom in, they should take the same space of the screen as before).
Currently, I've implemented this using the AdornerLayer. This solution has several problems but the most significant one is that the UI doesn't fare well under the load even for 120 such markers.
I wanted to ask what would be the best way to go about implementing this? I thought of two solutions:
Inherit from Canvas and make sure it is invalidated not for every
added marker but for a range of markers at once
Create a control that holds an image and change its OnDraw to draw all the markers
I would appreciate some pointers from someone with experience with a similar problem.
Your use case looks quite specialized, so a specialized solution seems in order. I'd try a variant of your second option — extend Image, overriding its OnRender method.
I'm working on a module that displays DWG files in WPF. I've managed to use CadLib library but it's working very slowly and I want to make it faster. I found out that if I convert that DWG file to SVG format and then print it to my XPS printer and rename the file to ZIP, I can get .page file which is basically a XAML file that displays the original SVG object in XAML.
I want to display this XAML code on a custom control and be able to pan / zoom it around. I tried to place this XAML code in a Canvas and it did manage to show up there, but now I'm stuck trying to pan / zoom the shape that was drawn there. Also, the mouse events are fired only when you click the actual drawing itself, and not the Canvas, which will be hard for the user to click...
Any help would be highly appreciated :)
You could try creating nested Canvases : One that holds the vectors and is moved on demand, one that is fixed and serves as the viewport. Haven't tried that, but it should be feasible...