I'm currently working on a project where I have a character walking in front of a projector screen. Like the one you see in classrooms. I also have a projector which is projecting an image onto it using the Projector component.
Now my question: I know how to have the image projected on my character, but I was wondering if it's possible to do this more realistically, because now it's more of an on-off type situation. I kind of want the image to change on the character as it walks in front of the projection.
Is this possible? And if it is, how?
It is possible!
Turns out I had my projector shader set to diffuse, so it just slammed the texture on everything it hit. I set that to Projector/light and it got better.
After that I set the texture itself to clamp instead of multiply at it's own settings. That fixed the multiply problem.
Last thing was to edit the image to have a white border around it, because it was repeating the edges. Now it's perfect!
Hope this helps anyone searching this.
Related
In my 2d Unity project, I have a Canvas with an Image that I want for a Background.
I have 2 gameObjects in front of this background. But no matter how much fiddling I do with Pos Z, Sorting Layers, or hierarchy sorting, the image is always in front of the objects.
Gif above shows in 3d mode that even though the image is clearly behind these objects, it will always appear over them if they overlap.
Hierarchy:
Main
Camera (Inspector: https://i.imgur.com/Q5a52cf.png)
BackgroundCanvas (Inspector: https://i.imgur.com/m9Pxr6B.png)
BackgroundImage (Inspector: https://i.imgur.com/jTx7pEW.png)
Object1 (Inspector: https://i.imgur.com/YcClEhk.png)
Object2
Any advice to rescue me from this madness is much appreciated.
Set the sprite renderer's transform z value to 0 instead of 100
If that does not solve, please specify camera properties also, so I can try to recreate the exact setup.
Try clicking on Layers -> edit layers, inside sorting layers you can change the order grabbing layer, everything upper appears behind in the camera.
You could create a layer called Object
Assign it to the game objects.
Create an object camera
culling mask -> object layer
depth bigger than you current main camera.
Set it to Projection -> Orthographic
Clear flags -> solid colors.
canvas Render Mode -> Screen Space - Camera and assign the Render Camera to be the Object Camera
Inspector tab of the object or background.
Sprite Renderer.
Additional Settings.
Sorting Layer.
change it to a different layer.
Had this same issue and was able to fix it with these steps:
In canvas settings change Screen Space Overlay to Screen Space Camera
Set the camera variable to the one you are using for your scene.
I figured out a workaround. I basically created a VisualElement inside the UI Builder and set a render texture to the background. Then I added an extra camera to my project to view all the sprites that needed to be on top. That camera feeds the render texture, so now everything that camera sees is forced to be on top of the UI Document as the background of that VisualElement. If you want control over the whole screen, just set the VisualElement position to absolute and max out its dimensions. If your game doesn't have a fixed aspect ratio it might cause some stretching, but other than that I cant really tell the difference. Sorting layers for the UI Documents are broken and unity needs to work on that. This is the best option I've found. Hope this helps.
I had the same problem and I fixed it by attaching the camera to the canvas which is screen space and finally changing the sorting layer of my object to -1.
Ok, I don't know if this is possible but I need to animate the alpha portion of an image - like I have an image with a shape cut out of it so the background shows through, and I want to animate the size of this hole in Unity;s animation controller.
I know it is possible to animate images by stringing together a series of different images like sprite animation, but I want to know if there is a way to animate or cut a hole in another image using an image in Unity and/or animate the alpha portion.
Is this possible? An example of an alpha image with hole cut in it:
And I would want to scale/animate that cut out inner square.
In unity, you can animate everything that can be changed in the inspector, including the size and color (including alpha) of your sprite.
However, it is not possible to animate pixels of a sprite seperately, as far as i know, meaning that you cannot change the alpha value of an area inside your sprite.
Do your images consist of a single color only or do you use complex images?
Well I guess the Shader you can find here will the closest answer to your question.
Other than that, operations on your texture will be quite heavy to perform at runtime.
Hope this helps,
Hi i am new to directx c#. i have a problem in one project. i draw two cubes which is one after another (ie x and y same location z is different), but the problem is when i view the front cube it is transparent and back cube is visible through front cube, i checked the transparency, no transparent level has been set. cullmode=null,Can anyone suggest what was the problem in tat?
And I think that the pixel of back cube overlaps with the front cube , how to overcome this?
here the screen shots..
Front Facing: http://postimg.org/image/6irstpv75/
Top View:http://postimg.org/image/o7ktw54h3/
Welcome :)
Please, consider adding tags to your post (programming language, "DirectX" etc) Without knowing which language you use (edit: c#... you should write it in tags... Soo, which framework? SharpDX? SlimDX? :)), i cannot be more specific.
Looks like you dont use DepthBuffer: you draw your distant cube first and closer cube after it, so it override existing pixels on BackBuffer.
In my XNA 3D game, for some reason, the depth buffer is off and ignored - even though I've done everything I can find to enable it (which admittedly isn't much, but it's supposed to be simple... not to mention default)
Before the models are rendered:
global.GraphicsDevice.DepthStencilState = DepthStencilState.Default;
Somewhere earlier:
graphics.PreferredDepthStencilFormat = DepthFormat.Depth24Stencil8;
graphics.ApplyChanges();
the models are rendered using a Vertex/Index list with device.DrawUserIndexedPrimitives and a BasicEffect.
It comes out like this:
The purple object is very far from the camera, and is drawn 1st.
The gray object is very near the camera, and is drawn 2nd.
The blue object is medium-distance to the camera and is drawn 3rd.
The gray object is rendering behind the blue object - that is correct if you're going off the draw order, but I want it to organize by distance from the camera (Using the depth buffer), in which case the gray object should draw in front of the blue object.
(And, no, just quickly sorting them manually, while it may provide a temporary solution, is not the way to fix this problem)
Update: This is directly related to the fact that I'm rendering onto a RenderTarget2D instead of straight onto the screen. (If I render on-screen instead of to the rendertarget, the depth is calculated correctly. The rendertarget is needed for other parts of the program... or an equivalent system.)
Well I found what I missed on my own after searching randomly:
A RenderTarget2D has its DepthBuffer disabled by default.
I just had to set the DepthFormat on the rendertarget I was drawing too.
Knew I missed something obvious...
(I'll green-check-mark-this in 4 hours when the site lets me.)
ED: that is, unless, in that time, somebody posts a nice list of everywhere XNA depth buffer data could/should be set, to better help people who might find this topic by google.
I'm making a game in C# and XNA, and I was trying to come up with a method to render massive terrains without using a tremendous amount of memory or passing the poly limit hard-coded into XNA.
My solution so far is to create a massive heightmap, and that heightmap is loaded into memory at the beginning of the game in the initialization phase. Then, terrain is only generated nearest to the camera. This is accomplished by projecting a triangle whose vertex is the character and the other two endpoints extend to the sides of the character's viewing area. Then, all the pixels inside that triangle on the heightmap are rendered and drawn into the game, thus only rendering what is seen.
The problem is, I've successfully found (I think, can't test until I get terrain rendering) the three vertices of the triangle. Now I need to find a list of the coordinates for every single pixel inside that triangle - whole numbers only, because I just need a list of pixels to render.
I know it sounds a little confusing, so here's the gist of it:
I have an image, and I project a triangle onto that image. The only thing I know about that triangle are the three vertices. I need a list of the pixels inside that triangle.
I've been Googling around for maybe 20 minutes now, and I figured I midas well go ahead and post something here due to the fact that what I'm trying to do isn't all that common. If I find an answer, I'll be sure to post it here.
But until then, can anyone tell me how to accomplish this?
Edit: A formula, please. If you can provide a formula or algorithm, and an explanation, that would be just perfect.
Edit: I've posted a new question, as I've ditched this method of rendering large terrains. The question is here.
Start here:
http://mathworld.wolfram.com/TriangleInterior.html
One of the non-trivial problems, not mentioned there, that you have to deal with is the pixelization along the boundary.