Is there a way to make a tilemap layer use a continuous parallax effect in Phaser?
There is no way to have a Tilemap layer be "endless", no, they have fixed dimensions. A parallax effect is achieved by just setting different scroll speeds on the layers.
It won't work as a TilemapLayer but it will work if you convert the TilemapLayer to a TileSprite and then scroll that.
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I have an ML model that I am using to create a mask to separate background and object. The problem is that the model is not that accurate and we still get regions of background around the edges.
The background could be any color but it is not uniform as you can see in the image.
This is the model output.
I was wondering if there is a way I could apply masking only around the edges so it doesn't affect other parts of the object which have been extracted properly. Basically I only want to trim down these edges which contain the background so any solutions using python are appreciated.
I'm really sorry for not being at the liberty to share the code but I'm only looking for ideas that I can implement to solve this problem.
You can use binary erosion or dilation to "grow" the mask so that it covers the edge
https://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.ndimage.morphology.binary_dilation.html
https://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.ndimage.morphology.binary_erosion.html
as for "apply masking only around the edges" (this is not the same mask I was writing about above), you can flag pixels that are close to the edge by iteration over a mask and finding where there is a 0 that has a neighbouring 1 or vice versa.
I'm trying to render some label textures with transparent background using OpenTK in Xamarin. At first the labels seemed display properly (see picture 1) but when the view rotated, the some label background are not transparent any more (see picture 2).
The enabled BlendFunc is GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha).
My question is how can I always have labels transparency on despite of their positions?
The same code and shader can run properly on Android Devices by the way.
Ah yes, the good old transparency problem. Unfortunately this is one that a graphics programmer has to solve on his own.
For just a few labels, the most straight foward solution is likely to sort your labels by z-depth and then render them from farthest to closest. You'd probably need to do some matrix math on that label position to adjust for viewport rotation.
For the 3d game I'm working on I have chosen to implement the order-independent transparency method called WBOIT by Morgan McGuire, which is fairly simple to implement and yields relatively good results.
I have a framebuffer with one color attachment, which is a cube map with 6 layers. I try to use layered rendering with the geometry shader. Rendering of a simple triangle to all layers works. But I am not sure how to clear all layers with vkCmdBeginRenderPass.
vkCmdBeginRenderPass supports pClearValues and clearValueCount but I can not specify the number of layers. So only the first layer is cleared. Setting clearValueCount to 6 and giving 6 clear values also does not help.
I saw that vkCmdClearAttachments seems to allow to specify the layers.
Is vkCmdClearAttachments the only way, or did I miss something? Is there maybe a reason that vkCmdBeginRenderPass only clears the first layer although rendering seems to render to all layers?
clearValueCount refers to the number of attachments to clear (with regards to their clearOp), not the layers of a framebuffer.
The number of layers to be cleared at the start of a renderpass (if clearOp is set to clear) for a framebuffer is specified via the layerCount of it's imageView's subresource.
I was wondering if someone could give me simple example of how to always draw sprites in pygame on --the top layer-- whilst an animation is being blitted on screen?
The senario I'm trying to solve is having an animated sprite (eg a man walking on the spot) and various other objects passing him, whilst he is still animated.
My solution so far has the animation layering on top of the "passing objects" which is not what I want.
Thanks in advance.
I think you've partially answered your own question here.
It's a matter of organizing what gets drawn first. Some side-scrolling 2D games use a "layer" solution, in which there is a background layer, a middleground layer, and a foreground layer, and the drawing system renders one layer after another.
I've also seen Pokémon top-down style games simply sort the sprites by their vertical position, so sprites "nearest" to the camera are drawn last, and thus on top of the other sprites.
See how the current implementation of Scene2D in libGDX gives each Actor a z-index property which can later be used to organize Actors into layers.
Just draw your sprites with a LayeredUpdates group:
class pygame.sprite.LayeredUpdates
LayeredUpdates is a sprite group that handles layers and draws like OrderedUpdates.
LayeredUpdates(*spites, **kwargs) -> LayeredUpdates
You can set the default layer through kwargs using ‘default_layer’ and an integer for the layer. The default layer is 0.
If the sprite you add has an attribute layer then that layer will be used. If the **kwarg contains ‘layer’ then the sprites passed will be added to that layer (overriding the sprite.layer attribute). If neither sprite has attribute layer nor **kwarg then the default layer is used to add the sprites.
and give your sprites the correct layer value.
I succeeded in retrieving the exact tile my player is on, at runtime when walking around the tiledmap. I'd like now to add some alpha marks on the terrain when passing over, and to do that I need to modify the color of some pixels of the tile.
I really don't know how to do it right now.. any hints?
thanks.
You probably want to draw decorations on top of the tiles, rather than modifying the tiles themselves. The tile images are shared across all cells using a tile, so if you modify the tile itself you would see the change everywhere it was used. Further, modifying the texture is a relatively expensive operation that you probably should try to avoid.
To draw on top the tiles, you might draw additional sprites, or use a custom shader.