I am working on visualizing different objects in Rviz using Ogre::ManualObjects and Ogre::BillBoardSet.
After the elements are drawn, the user is given option to configure color of each objects during run-time.
What is the best way to change color? Because there is no built-in API to set color in Ogre.
Thank you in advance.
Related
I have a need. I need to make a window. The glass on the window is transparent. I have found some examples:
https://threejs.org/examples/#webgl_materials_shaders_fresnel
https://threejs.org/examples/#webgl_materials_cubemap_refraction
The background of these examples is static pictures.
My background is dynamic. How can I do it?
Maybe you can use THREE.Refractor like shown in this example. It allows you to create a refractive see-through surface. You might have to adjust the respective shader program in order to achieve your intended visual result (the default shader of THREE.Refractor does not perform any distortions).
How to get access to custom canvas group shader? I need to desaturate all child of game object situated on canvas. Something like canvas group component that provide possibility to change alpha of all child objets.
Unity might be using a more elegant solution by hiding their implementation of setting the alpha via the CanvasGroup component in their C++ part of the engine.
For now it looks like there is no other way than to set the material property on all UI elements (UnityEngine.UI.Graphic) with a custom material.
Remember, you can download the official shader source files. ;) There's a default UI shader, which you need to modify to add additional color functionality.
I want to create an app using SceneKit with a solid 3D object, whose shape I can change using a given user input. Is it better to do this with predefined animations or to make lots of smaller objects (as nodes) and change their arrangements to mimic a single object changing shape? Many thanks!
Depending on what you mean by 'change shape' you have following options:
If your object is simple (ex: SCNBox, SCNCone, SCNCylinder and alike) and you can change its shape the way you want using its animatable properties (ex: chamfer radius of SCNBox), then animations is simpliest way to go.
If your object is SCNNode with contents loaded from external source and by change its shape you mean scale/rotate/translate, you can also use animations.
If you can create complex object using graph of simple objects with acceptable performance and you can achieve desired shape change with animatable properties then you can also use animations.
If your object is complex (for example, based on some mathematical model) and/or performance is main prioprity for you, then the only way to go with SceneKit is constructing custom SCNGeometries (by filling SCNGeometrySource/SCGeometryElement) from your model.
Since question have tag blender and title mentions rotate, then perhaps (2) is best for you.
I have a stacked multiBarChart created with nvd3: jsfiddle is here: http://jsfiddle.net/e3kxZ/5/
(1) How can I get each region to display its value near its top?
I tried showValues(true) but I don't think that's supported in multiBarChart.
Other concerns I have are:
(2) how to set the text color so that it contrasts enough with the region (dark vs light colors), and
(3) how to keep the text labels from overlapping if any particular region is small.
I found an svg example (doesn't use nvd3) -- it assumes a static size for the chart, but I'd prefer to use something convenient and dynamic like nvd3.
Alternatively, if there is a different js library that supports this out of the box, please let me know and I'll use that instead.
Thanks in advance for any help!
Within my current MATLAB GUI project, i have two axes objects. The first is used by the workaround "uibutton" (I don't use GUIDE) in order to display a LaTeX-formula (as far as I know, only axes labels are capable to use LaTeX whereas normal static text fields aren't...). The other axes object is used to actually plot a 3D-function.
The program has the following steps:
the first axes creats the LATEX-formula (e.g. f(x)=).
User enters a function in the edit field after the LaTeX-formula (e.g. f(x)=a+b).
User presses a "plot"-button.
3D-function is plotted in the second axes object.
Problem:
As soon as the 3D-function is plotted, the nicely rendered LaTeX-formular becomes crisp. Is there any way to prevent this from happening?
http://i42.tinypic.com/348pq2u.png (See picture for problem demonstration)
Check your figure properties before and after you draw the 3D plot
get(gcf, 'renderer')
My guess is that plotting the 3D function changes the renderer from the default ("painters") to another (likely OpenGL). Matlab's Latex rendering does not seem to play well with zbuffer or OpenGL (these produce bitmaps rather than line art).
You may be stuck if painters can't render your 3D graphics properly, but you can try to force it by setting the renderer manually back to painters
set(gcf, 'renderer', 'painters')