Dear stack overflow community,
I am trying to create a pallet rack in AnyLogic (version 7.1.2 university), in which the number of cells, the number of levels and some other properties are set from parameters. The parameters are set up prior to model execution from the simulation page. Has anyone done that before?
In my opinion, the problem starts with the palletRack-properties that do not allow to set parameters as values but require a number ("Number of cells: 10" instead of "Number of cells: myParameter"). But there are pre-defined functions like "setNumberOfPositions(int nPositions), so that I thought I could avoid the problem by calling these functions at the beginning of the simulation (at time zero). I used the action field of an event for that.
This caused an exception that said "root: palletRack: Markup element is already initialized and cannot be modified. Please use constructor without arguments, perform setup and finally call initialize() function.".
Exception during discrete event execution: Markup element is already initialized and cannot be modified. Please use constructor without arguments, perform setup and finally call initialize() function
Since I could not modify anything in the Java editor, I tried to construct a pallet rack in the event action field:
PalletRack palletRack = new PalletRack();
palletRack.setOwner(this);
[...]
palletRack.setNumberOfPositions(p_CellsInX);
palletRack.setNumberOfLevels(p_CellsInY);
palletRack.setCellWidth(p_WidthOfCell);
palletRack.setLevelHeight(p_HeightOfCell);
palletRack.initialize();
This did not throw any errors but did not built a rack either.
Additionally, I tried to add "#Override" in front of my functions.
Has anyone any ideas how I can initialize the pallet rack with parameters or override the initial values?
Obviously, I am a total beginner in AnyLogic. I would be very grateful for any advice. Thank you in advance!
It is possible but not straight forward. You need to do everything programmatically, i.e. create the pallet rack but also the line that goes through it, add them to a (new or existing) network and then initialize it all. Some dummy code to get you started below.
Note that myNetwork is an existing network I drew manually at design time here.
Also, one tip: draw the pallet rack and line through it manually first to easily obtain all the coordinates and ensure it would work. Then, remove those and create them programmatically but with the right settings...
PS: this might not work in AL7 but it works in AL8. You might need slightly different functions for adding to presentation
myRack = new PalletRack(this, // Agent owner
SHAPE_DRAW_2D3D, // ShapeDrawMode
true, // isPublic
ground, // ground
false, // isObstacle
-2480, // x pos
1980, // y pos
0.0, // z pos
35.2*numCellsPerRackPerLevel, // length (keep constant cell width and vary rack length accordingly)
20.0, // depth
20.0, // depthR (depth of the right riack (only if type is 2 racks and 1 aisle)
50.0, // levelHeight
0., // rotation
PALLET_RACK_TWO_PALLET_RACKS, // PalletRackType
PALLET_RACK_NO_DIRECTION, // PalletRackDirection
40.0, // aisleDepth = width
40.0, // aisleRDepth (width of right aisle, only if 1 rack 2 aisles)
35.2, // cellWidth
numCellsPerRackPerLevel, // nPositions
numLevelsPerRack, // nLevels
1, // nDeep
lavender, // fillColor
dodgerBlue, // lineColor
2); // cellsBetweenLegs
presentation.add(myRack);
// this must cut through both rack's aisles
MarkupSegmentLine segment = new MarkupSegmentLine(myRack.getX()-10, myRack.getY()+30, 0.0, myRack.getX()+myRack.getLength()+10, v_IMS_Rack1.getY()+30, 0.0);
Path path = new Path(this, SHAPE_DRAW_2D3D, true,
true, true, 1.0, false, 10,
PATH_LINE, dodgerBlue, 1.0,
segment);
presentation.add(myRack);
myNetwork.add( myRack);
myNetwork.add(path);
myNetwork.initialize();
Related
I'm trying to make a tflite multiple object detector in flutter
I came across two function which takes image path as input that's why this question.
the two function are detectObjectOnImage and runModelOnImage and when I use runModelOnImage my code is running and if I swap it with detectObjectOnImage the interprter does initialize but on calling the function the app automatically closes and shows Lost connection to device
this is how my code goes
classifyImage(String imgpath) async {
var output = await Tflite.runModelOnImage(
path: imgpath,
imageMean: 0.0,
imageStd: 255.0,
threshold: 0.2,
numResults: 1,
asynch: true,
);
setState(() {
_loading = false;
outputs = output;
});
print(outputs);
print(outputs[0]["label"]);
}
I guess my assumptions are correct but I don't know why its not working, apart from that I created a model from Teachable machine by google and it only detects one object at a time so my next question is how do I make it detect more than 1 object
Thanks
The difference between the two functions are their usages:
For object detection you use Tflite.detectObjectOnImage()
For image classification (finding objects without printing boxes around them) you use Tflite.runModelOnImage()
The two Methods return different sized tensors. When the Tensors can't be mapped to the expected output the app disconnects as you described it.
Regarding your second Question:
You set the parameter numResults, which limits the number of results, to 1. Increase this number to get more results.
(source: https://pub.dev/packages/tflite#Example)
I'm trying to set the background color of a GUI.Box:
void OnGUI()
{
string LatLong;
LatLong = map.calc.prettyCurrentLatLon;
var mousePosition = Input.mousePosition;
float x = mousePosition.x + 10;
float y = Screen.height - mousePosition.y + 10;
GUI.backgroundColor = Color.red;
GUI.Box(new Rect(x, y, 200, 200), LatLong);
}
However, the box is showing in a semi-transparent black, and the white text is subdued, not opaque white.
You have to use s gui style:
private GUIStyle currentStyle = null;
void OnGUI()
{
InitStyles();
GUI.Box( new Rect( 0, 0, 100, 100 ), "Hello", currentStyle );
}
private void InitStyles()
{
if( currentStyle == null )
{
currentStyle = new GUIStyle( GUI.skin.box );
currentStyle.normal.background = MakeTex( 2, 2, new Color( 0f, 1f, 0f, 0.5f ) );
}
}
private Texture2D MakeTex( int width, int height, Color col )
{
Color[] pix = new Color[width * height];
for( int i = 0; i < pix.Length; ++i )
{
pix[ i ] = col;
}
Texture2D result = new Texture2D( width, height );
result.SetPixels( pix );
result.Apply();
return result;
}
Taken from unity forum.
I'm gonna slide in with a more elegant solution here before this question gets old. I saw Thomas's answer and started to wonder if there is a way to do that without having to do the "InitStyles" in the OnGUI loop. Since ideally you only want to init the GuiSkin once in Awake or Start or wherever, but only once, and then never check to see if it's null ever again.
Anyway, after some trial and error, I came up with this.
private void Awake() {
// this variable is stored in the class
// 1 pixel image, only 1 color to set
consoleBackground = new Texture2D(1, 1, TextureFormat.RGBAFloat, false);
consoleBackground.SetPixel(0, 0, new Color(1, 1, 1, 0.25f));
consoleBackground.Apply(); // not sure if this is necessary
// basically just create a copy of the "none style"
// and then change the properties as desired
debugStyle = new GUIStyle(GUIStyle.none);
debugStyle.fontSize = 24;
debugStyle.normal.textColor = Color.white;
debugStyle.normal.background = consoleBackground;
}
REVISION - 17 July 2022 - GUI Style Creation and Storage
Prelude
Style creation through the methods provided by others are certainly functional methods of providing your custom editors with a unique look. They have some fundamental issues I should point out, which my method doesn't outright correct, just alleviate. This method still needs to be expanded upon and is still a partly experimental progression from a personal plugin.
Creating styles every OnGUI Call creates unnecessary, extra instructions for your editor window. This doesn't scale well past a handful (4~) styles.
By creating styles every time OnGUI is called, you're creating textures repeatedly for the background colour (not good). Over prolonged use of this method, memory leaks can occur although unlikely.
What does my method do differently?
Creates GUIStyle and Texture2D files. GUIStyles are saved as .JSON files, which is best compatible for [JSON <-> GUIStyle] conversion and storage.
Texture2Ds are encoded from raw data to PNG format through UnityEngine.
Checks if a style file is null before fetching or creating any missing styles again.
Contains a list of all styles through the use of a Style Manifest (struct) to store the names of all textures and styles to iteratively load on fetch.
Only creates styles if they are missing. Does not spend resources on creating pre-existing styles and pre-existing styles.
GUIStyles (as JSONs) and Texture2D files are stored in a Resources folder within the Plugin folder.
It should be noted that my style methods are done with the express understanding and consideration of GUISkins existing. They are not suitable for my UI/UX needs.
How is this done?
Plugin Style Handing Diagram
I separate Style Loading into a unique namespace for style handling and contain functions, as well as public variables for global plugin access, within. This namespace creates, loads and can send back styles on the requests sent by other scripts.
A call to a function is made when the plugin is opened to load the style manifest and subsequently all styles and textures are loaded, to be relinked for use.
If the styles manifest is missing then it is recreated along with all GUIStyle files. If the styles manifest is not missing but a style is then that style is recreated and the style manifest is modified to reference the new style.
Textures are handled separately from GUIStyle loading and are collected in a separate array. They are independently checked to see if they still exist and missing textures are recreated and encoded from raw data to PNG format, with the style manifest being modified when necessary.
Instead of repeatedly creating all styles or repeatedly loading them each frame, the plugin sends a request to fetch the first style from memory and checks if the result is null. If the first style returns as null then the plugin assumes all styles have been dereferenced and calls a reload or recreation of the relevant GUIStyle files (this can happen because of the engine entering/exiting play mode and is necessary to preserve UI/UX legibility).
If the style returns as a valid reference, plugins of mine do use it but this is risky. It's a good idea to also check at least one texture because textures are at risk of being dereferenced from the Texture2D array.
Once each check is done, the plugin renders the layout as normal and the next cycle begins. Using this method overall requires extra processing time and extra storage space for the plugin but in turn:
Quicker over a longer period of time due to styles being created or loaded only when necessary
Easier to modify themes for plugins, allowing individuals to customize the tools to their preferred theme. This can also be expanded on custom "theme packs" for a plugin.
Scalable for large amounts of styles to an extent.
This method still requires experience in GUI Styles, Data Saving, JSON Utilisation and C#.
I have a (moving) sprite node.
I'd like to detect other (moving) sprite nodes within a certain range of this node. Once one is detected, it should execute an action.
The playing an action part is no problem for me but I can't seem to figure out the within-range detection. Does have any ideas how to go about this?
A simple, but effective way to do this is comparing the position's in your scene's didEvaluateActions method. didEvaluateActions gets called once a frame (after actions have been evaluated but before physics simulation calculations are run). Any new actions you trigger will start evaluating on the next frame.
Since calculating the true distance requires a square root operation (this can be costly), we can write our own squaredDistance and skip that step. As long as our range/radius of detect is also squared, our comparisons will work out as expected. This example shows detect with a "true range" of 25.
// calculated the squared distance to avoid costly sqrt operation
func squaredDistance(p1: CGPoint, p2: CGPoint) -> CGFloat {
return pow(p2.x - p1.x, 2) + pow(p2.x - p1.x, 2)
}
// override the didEvaluateActions function of your scene
public override func didEvaluateActions() {
// assumes main node is called nodeToTest and
// all the nodes to check are in the array nodesToDetect
let squaredRadius: CGFloat = 25 * 25
for node in nodesToDetect {
if squareDistance(nodeToTest.position, p2: node.position) < squaredRadius {
// trigger action
}
}
}
If the action should only trigger once, you'll need to break out of the loop after the first detection and add some sort of check so it does not get triggered again on the next update without the proper cool down period. You may also need to convert the positions to the correct coordinate system.
Also, take a look at the documentation for SKScene. Depending on your setup, didEvaluateActions might not be the best choice for you. For example, if your game also relies on physics to move your nodes, it might be best to move this logic to didFinishUpdate (final callback before scene is rendered, called after all actions, physics simulations and constraints are applied for the frame).
Easiest way I can think of without killing performance is to add a child SKNode with an SKPhysicsBody for the range you want to hit, and use this new nodes contactBitMask to determine if they are in the range.
Something like this (pseudo code):
//Somewhere inside of setup of node
let node = SKNode()
node.physicsBody = SKPhysicsBody(circleOfRadius: 100)
node.categoryBitMask = DistanceCategory
node.contactBitMask = EnemyCategory
sprite.addNode(node)
//GameScene
func didBeginContact(...)
{
if body1 contactacted body2
{
do something with body1.node.parent
//we want parent because the contact is going to test the bigger node
}
}
I have just started unity. I have 4 Images(sprites) aligned in a grid.
As soon as i touch the particular chocolate, its texture changes[I wrote a code for that]. There is a button on screen.After pressing the button, I want to move only those chocolates whose texture has been changed.
I know the following move code but i don't know how to use it here.
void Update () {
float step=speed*Time.deltaTime;
transform.position=Vector3.MoveTowards(transform.position,target.position,step);
}
I just don't know to move that particular sprite whose texture is changed. Thanks
Do you want to be moving the sprites over the course of a duration or instantly?
If it's over the course of a duration I suggest you use Lerp. You can Lerp between two Vector.3's in a time scale. Much cleaner and once learned a very useful function.
Code examples below:
http://docs.unity3d.com/ScriptReference/Vector3.Lerp.html
http://www.blueraja.com/blog/404/how-to-use-unity-3ds-linear-interpolation-vector3-lerp-correctly
However if you want to move it instantly. This can be done very easily using the built in localPosition properties which you can set in or outside the object.
Set your changed sprites Bool moved property (create this) to true on click (if you're using Unity 4.6 UI canvas then look at the IClick interfaces available for registering mouse activity in canvas elements) and then when you press the button, loop through a list in a handler file which contains all your button texture objects and move those that the moved property is set to true for.
foreach(GameObject chocolate in chocolateList)
{
if (chocolate.moved == true)
{
gameObject.transform.localPosition.x = Insert your new x position.
gameObject.transform.localPosition.y = Insert your new y position.
}
}
However please do clarify your intentions so I can help further.
EDIT 1:
I highly suggest you make your sprites an object in the canvas for absolute work clarity. This makes a lot of sense as your canvas can handle these type of things much better. Use Image and assign your image the sprite object (your chocolate piece), define it's width and height and add a script to it called "ChocolatePiece", in this script create two public variables, bool moved and int ID, nothing else is required from this script. Save this new object as your new prefab.
Once you've done this in a handler script attached to an empty gameobject in your canvas make a list of gameobjects:
List<GameObject> chocolatePieces = new List<GameObject>();
You'll want to at the top of your handler script define GameObject chocolatePiece and attach in your inspector the prefab we defined earlier. Then in Start(), loop the size of how many chocolate pieces you want, for your example lets use 4. Instantiate 4 of the prefabs you defined earlier as gameobjects and for each define their properties just like this:
Example variables:
int x = -200;
int y = 200;
int amountToMoveInX = 200;
int amountToMoveInY = 100;
Example instantiation code:
GameObject newPiece = (GameObject)Instantiate(chocolatePiece);
chocolatePieces.Add(newPiece);
newPiece.GetComponent<ChocolatePiece>().ID = i;
newPiece.transform.SetParent(gameObject.transform, false);
newPiece.name = ("ChocolatePiece" + i);
newPiece.GetComponent<RectTransform>().localPosition = new Vector3(x, y, 0);
From this point add to your positions (x by amountToMoveInX and y by amountToMoveInY) for the next loop count;
(For the transform.position, each count of your loop add an amount on to a default x and default y value (the position of your first piece most likely))
Now because you have all your gameobjects in a list with their properties properly set you can then access these gameobjects through your handler script.
I am in the process of adding drag and drop support to an existing Mono/C#/GTK# application. I was wondering whether it was possible to use RGBA transparency on the icons that appear under the mouse pointer when I start dragging an object.
So far, I realized the following:
I can set the bitmap in question by calling the Gtk.Drag.SourceSetIconPixbuf() method. However, no luck with alpha transparency: pixels that are not fully opaque would get 100% transparent this way.
I also tried calling RenderPixmapAndMask() on the GdkPixbuf so that I could use Gtk.Drag.SourceSetIcon() with an RGBA colormap of my Screen. It didn't work either: whenever I started dragging, I got the following error:
[Gdk] IA__gdk_window_set_back_pixmap: assertion 'pixmap == NULL || gdk_drawable_get_depth (window) == gdk_drawable_get_depth (pixmap)' failed.
This way, the pixmap doesn't even get copied, only a white shape (presumably set by the mask argument of SetSourceIcon()) shows up on dragging.
I'd like to ask if there's a way to make these icons have alpha transparency, despite the fact that I failed to do so. In case it's impossible, answers discussing the reasons of the lack of this feature would also be helpful. Thank you.
(Compositing is - of course - enabled on my desktop (Ubuntu/10.10, Compiz/0.8.6-0ubuntu9).)
Ok, finally I solved it. You should create a new Gtk.Window of POPUP type, set its Colormap to your screen's RGBA colormap, have the background erased by Cairo to a transparent color, draw whatever you'd like on it and finally pass it on to Gtk.Drag.SetIconWidget().
Sample code (presumably you'll want to use this inside OnDragBegin, or at a point where you have a valid drag context to be passed to SetIconWidget()):
Gtk.Window window = new Gtk.Window (Gtk.WindowType.Popup);
window.Colormap = window.Screen.RgbaColormap;
window.AppPaintable = true;
window.Decorated = false;
window.Resize (/* specify width, height */);
/* The cairo context can only be created when the window is being drawn by the
* window manager, so wrap drawing code into an ExposeEvent delegate. */
window.ExposeEvent += delegate {
Context ctx = Gdk.CairoHelper.Create (window.GdkWindow);
/* Erase the background */
ctx.SetSourceRGBA (0, 0, 0, 0);
ctx.Operator = Operator.Source;
ctx.Paint ();
/* Draw whatever you'd like to here, and then clean up by calling
Dispose() on the context's target. */
(ctx.Target as IDisposable).Dispose ();
};
Gtk.Drag.SetIconWidget(drag_context, window, 10, 10);