I am having a peculiar issue with MovieMaterial.as in Away3D 3.6.
I have a 3D globe with clickable, white hotspots on it (see image below). When I set interactive to 'true' in the following code, when I move my mouse over the globe's surface, a 2D copy of the MovieMaterial will suddenly appear (see image at bottom). This 2D image will move when I move my mouse too.
_hotspotGlobeMaterial = new MovieMaterial( _hotspotSprite, { interactive: true, smooth: true, transparent: true } );
_hotspotGlobe.material = _hotspotGlobeMaterial;
http://grandinteractive.com/misc/GlobeWithHotspots.png
The 2D issue here:
You'll also noticed that the white / transparent areas are reversed.
http://grandinteractive.com/misc/Bug.png
Away3D 3.6 creates an invisible Sprite that appears over your 3D object. The 3D sprite contains is a copy of your MovieMaterial and it basically operates as a means of making the children clickable. Clever!
The reason that it was showing in my case was because I had set blendMode = BlendMode.LAYER in a bunch of places in my code, thus making the invisible sprite visible. Who would have thought?
Related
Unity SpriteRender has a useful drawMode parameter to define how the Sprite scales when its dimensions change, with the option to slice sprite if correctly set in Sprite Editor.
Unlikely TilemapRenderer does not have this drawMode option, therefore it is impossibile to correctly slice a Sprite of a Tile.
The image below is an example of what I would achieve, the first image is the sprite itself, the second one is the tile (NOT sliced) the third one is a UI Image, where the sprite is correctly sliced (this is what I want to achieve).
Is there any way to have that result with TilemapRenderer?
I want to create 2d game. The game is similar to the Scale Puzzle. I've already created nearly all the functionality. Only the last remains.
.
This is example.
And that's how I draw shapes.
.
I click inside a white square, and after 1 seconds a square is drawn regardless of the position of the ball. (x,y).
Square is created programmatically, and it is added to the parent element "SquaresList" with name New Game Object.
How can i do, so that the violet field becomes larger, and in the middle of the screen.
I made it so that for every 3 clicks, "SquaresList" increases Scale by 0.25f, and get negative position of the ball. Example:
SquareList.transform.position = new Vector2(-ball.pos.x, -ball.pos.y)
This does not work correctly.
What options can be? (intersections, find the max/min point, math formulas) ?
Hi NoName :) Your method
SquareList.transform.position = new Vector2(-ball.pos.x, -ball.pos.y)
would work perfectly if your object does not inherit other objects and there positions. To fix this make sure that you reset the position of all other game objects that you use as containers.
I have a projector component and I need to find the angle that projected texture falls at to exclude the projecting on vertical faces.
My projector is under the mouse pointer and works ok when it is over an horizontal face:
I would like the projector to switch off on vertical faces to avoid this bad effect:
If possible, I would like to do it in the shader code to avoid the vertical projected image even if the cursor is located on the corners of an horizontal face and a part "goes out" on vertical face.
I found this solution in C#:
if (Physics.Raycast(MouseRay,out hitInfo)){
if(hitInfo.normal.y>0) {
// draw
} else {
// not draw
}
}
But only it works on curved surfaces and not, for example, on the face cubes.
How can I do this properly?
Normally they would use an image on a quad using TGA transparency, which rotates itself to the face that the middle of the object is aligned to, using ray to find the vertex and making it's absolute normal.
Other ways of doing it would be quite tricky, perhaps using decals... If you did it using a shader, it would take so much time... it's a case of problem solving not being ordered in order of importance for fast development. Technically you can project a volumetric texture on top of whatever object you are using... that way you can add your barred circle projected from a point in space towards the object, as a mathematical formula, it takes a while to do, check out volumetric textures, i have written some and in your case it needs the mouse pos sent to texture and maths to add transparent zone and red zone to texture. takes all day.
It's fine to have a flat circle that flips around when you change the pointer onto a different face, it will just look like a physical card and it's much easier to code, 10 minutes instead of many hours.
In my scene, the smileys(Quad with png image) are placed at Y:0 and the dots(Quad with tiling 3X3) are placed at Y: -0.25.
The shader I need to use for the smileys is Transparent-Diffuse as I am using a circle png image.
But the dots I use below are showing up above the smiley. Using any other shader like Diffuse solves the issue but the smiley becomes a square.
Screenshot:
If you need any more clarifications please dont hesitate to ask.
Edit:
I have attached the shader details of both the smiley and the dots from the inspector panel.
link: http://postimg.org/image/cvws1os7d/
Edit 2:
I have found that the issue should be with the MainCamera and especially with distance & "Field Of View".
I need to use "Perspective" as projection type and 140 as Field of View.
If I change the projection type to Orthographic the issue is completely fixed.
The below screenshots show how the distance and Field of View controls the appearance of the dots over the smiley.
Screenshot 1:
Y position: 8.48
Field of View: 30
link: http://postimg.org/image/s31tttrkp/
Screenshot 2:
Y position: 9.7
Field of View: 30
link: http://postimg.org/image/f71sq0y4b/
Screenshot 3:
Y position: 11.41
Field of View: 30
link: http://postimg.org/image/3uk4az3d3/
Screenshot 4:
Y position: 1
Field of View: 140
link: http://postimg.org/image/bul9zwg7z/
Can this be a clue?
Just a couple of info, on how transparency is typically implemented (not only by Unity).
Meanwhile opaque objects can be drawn in any order (even if sorting them in front-to-back order can eventually improve some GPU performances relying on an early z-cull). Which pixels are visible can be deduced using the depth value stored into the z-buffer.
You can't rely on z-buffer for transparency.
For rendering translucent objects a typical approach is to draw them after all opaque objects, and sorting them in back-to-front order (transparent objects more distant from the camera are drawn first).
Now the question is: how do you sort objects? with a perspective camera and meshes of a generic shape, the solution is not obvious.
For quad meshes oriented parallel to a ortographic camera view plane, the z order is implicitly correct (that's why it always works for you).
You can also notice that camera position influences the drawing order, because with perspective camera the order is calculated as distance between object position and camera.
So what can you do with Unity3d, in your specific use case scenario?
A couple of tricks:
Explicitly set the render queue of the material
Explicitly set the render order inside the shader (similar of the above, but equals to every object with the same shader)
Fake the depth using Offset into the shader (not that useful in your case but worth to be known)
hope this helps
EDIT
I didn't know that, the camera transparency sorting mode appears to be customizable. So this is another solution, maybe the best for your case if you want to use a perspective camera.
If you are using Sprite Renderer component to render the images, you have to change the rendering order with Sorting Layer and Order in Layer parameters instead of changing the Y position.
Sorting layers can be added by clicking the "default" and choosing "Add Sorting Layer..". The order of the layers is changed by dragging them into different order. With Order in Layer lower numbers are rendered first. This means that higher numbers will be drawn on top of lower ones.
I am trying to add a transparent texture on top a cube. Only the front face is not transparent. Other sides are transparent. What could be the problem?. Any help is appreciated.
EDIT : I found that the face which is drawn first is opaque.
3 face of the cube is drawn.
Opaque face.((This face's index is given first in GLdrawElements))
Transparent face.
You most probably ran into a sorting problem. To display transparent geometries correctly the faces of the object have to be sorted from back to front.
Unfortunately there is no built-in support for that in opengl-es (or in any gfx-library in existance). The only possibility is to sort your polygons, recreate your object each frame and draw it with correctly ordered faces.
A workaround would be using additive transparency instead of normal transparency. Additive transparency is an order independent calculation. You have to remember to turn off z-buffer writes while drawing because otherwise some geometry may be ocluded.
Additive transparency is achieved by setting both blendfunc values to GL_ONE.