I have a Viewport3D object containing a scene of hierarchical Model3D objects (grouped in Model3DGroups).
I need to "attach" 2D objects to 3D elements in the scene.
I read some articles on 3D projection but I couldn't fully understand how to apply my WPF scene data to those solutions.
What is the proper way to do that? I also tried Petzold.Media3D library but I didn't understand how to use it...
Thanks
I think you are looking for the Viewport2DVisual3D class. It allows you to render any Visual2D into the 3D space.
Searching the web for more info on this class will give you examples and videos explaining how it works.
Anyway, if you are doing any WPF 3D you also need to know about the Helix Toolkit - an awesome (free) WPF 3D toolkit.
It has two classes added recently that might also be relevant to what you are doing:
BillboardVisual3D (quad that always faces camera) and
TextBillboardVisual3D (text that always faces camera).
There are useful if you want to make some 2D image that must always face towards the 3D camera.
Related
I would like to place a hairstyle after facial landmark detection. I'm able to render 2D images properly. I would like to render 3D model. I thought of using SceneKit to render 3D model. I would like to know how Instagram, snapchat and other face filter apps are rendering 3D models. I observe SceneKit coordinate system is different from UIKit coordinate system. I have googled but couldn't find the conversion of coordinate system. Could anyone help. Thanks.
Look for worldUp and simdWorldUp instance properties to understand how ARKit constructs a scene coordinate system based on real-world device motion (also, you can inspect ARConfiguration.WorldAlignment enum).
Please, look at this SO post: Understand coordinate spaces in ARKit for complete info.
And remember, ARAnchor is your best friend when placing 3D object. Click here
for further details.
I am new to 3D and charting in WPF.
What I would like to do is building a chart with my own 3D objects inside it. I don't want to display classical points or bubbles, but my own 3D objects (cubes for example). And I want that the user can interact with each object on the chart (rotate a cube using mouse for example).
I wonder if there are libraries to do this kind of things or if I have to do it by myself using WPF 3D or something else.
I am working on a Chart Control,
I need to implement the Chart Snapshot feature for capturing a vector based image in high quality of Curves and Texts, in any requested size.
Can anyone suggest me any solution or a pointer to resolve this problem.
Any kind of help in deeply appreciated.
If you have to save your image in a vector format you can using tracing. Potrace is an open source bitmap-to-vector tracer library (but considers that bitmap tracing is imperfect). Also considers that wpf is linked closely with XAML, a vector graphics markup languages, so you may want convert raster graphics to XAML (though Charles Petzold you can't embed a bitmap in a XAML file)
If you need to draw a vector image you can use the Shape element that provides a base class for shape elements, such as Ellipse, Polygon, and Rectangle; and add the shape as Panel child. If you are dealing with thousands of shape I suggest to use the DrawingVisual class, a visual object that can be used to render vector graphics on the screen, and its RenderOpen method.
To zoom you have to work with transformations, in particular ScaleTrasnform and apply the transformation to your panel or to your shapes.
Hope this help.
You can take a look at XamlToy but I have not already try it.
http://xamltoys.codeplex.com/
i was learning 3d animation in wpf.. and most tutorials would make an image 3d then play with it alittle ..moving and changing dimensions..
so it got me wondering.. is it possible to add some type of data container (like a grid canvas.. or whatever).. and make it move in 3d dimensons too ?
i am not talking about skewing.. i am talking about real 3d movement..
What a lot of examples do in .Net3.0 is use visual brush to draw the visual of the control/data container on a surface in 3D space. And then map the mouse and keyboard events back to the 2D control (through a translation).
They are a lot of examples that illustrate this. (one for instance is)
An alternative is to use a panel that layouts your control in 3D space using one of the thriple opensource project Or you could read the code (since it's opensource) as a starting point.
i want to implement 3D image manipulation(i.e., image edit,re-size,rotate,zoom-in & zoom-out).
please give me your ideas as soon as possible.
Silverlight 2.0 does not support true 3D. Silverlight 3 will support a perspective projection simulated 3D (think 3D images in PowerPoint).
For standard image manipulation you have a few ways to go. If you just want to do rotation and resizing for display purposes, you can set a RenderTransform on the image object. This does not actually change the bits in the image but just cases them to be drawn differently.
If you want to learn about full image processing, see this other post on StackOverflow:
Image Processing