I am trying to set some layers' layout visible property to 'visible' using the 'setLayoutProperty' method in mapbox-gl-js.
this.toggleCanvasMarkersVisibility(true); // This code sets visibility to visible
// Create a snapshot of the map as follows:
this.map.getCanvas().toBlob(function (blob) {
canvasContext.strokeStyle = '#CCCCCC';
canvasContext.strokeRect(leftPosition, topPosition, width, height);
var img = new Image();
img.setAttribute("crossOrigin", "anonymous");
var srcURL = URL.createObjectURL(blob);
img.onload = function () {
canvasContext.drawImage(img, leftPosition, topPosition, width, height);
// Other operations
});
The layers which I just set to 'visible' are not visible yet on the map. How do I detect if they are visible other than the visible property, because the 'visible' property is set to 'visible'?
The PNG as a result does not consist of the markers.
Any help is appreciated!
Related
I'm using this as a capture.
ScreenCapture.CaptureScreenshot($"Screenshot{_shotIndex}.png", size);
But the CpatureScreenshot() is too slow.
So I tried different scripts but failed. One of them is that I succeeded in capturing the scene view.
public void TakeTransparentScreenshot(Camera cam, int width, int height, string savePath)
{
// Depending on your render pipeline, this may not work.
var bak_cam_targetTexture = cam.targetTexture;
var bak_cam_clearFlags = cam.clearFlags;
var bak_RenderTexture_active = RenderTexture.active;
var tex_transparent = new Texture2D(width, height, TextureFormat.ARGB32, false);
// Must use 24-bit depth buffer to be able to fill background.
var render_texture = RenderTexture.GetTemporary(width, height, 24, RenderTextureFormat.ARGB32);
var grab_area = new Rect(0, 0, width, height);
RenderTexture.active = render_texture;
cam.targetTexture = render_texture;
cam.clearFlags = CameraClearFlags.SolidColor;
// Simple: use a clear background
cam.backgroundColor = Color.clear;
cam.Render();
tex_transparent.ReadPixels(grab_area, 0, 0);
tex_transparent.Apply();
// Encode the resulting output texture to a byte array then write to the file
byte[] pngShot = ImageConversion.EncodeToPNG(tex_transparent);
File.WriteAllBytes(savePath, pngShot);
cam.clearFlags = bak_cam_clearFlags;
cam.targetTexture = bak_cam_targetTexture;
RenderTexture.active = bak_RenderTexture_active;
RenderTexture.ReleaseTemporary(render_texture);
Texture2D.Destroy(tex_transparent);
}
How do I capture a screenshot in Unity3d with a transparent background?
I need to capture the game view, but this script does the scene view.
Inevitably I tried to implement a feature that was automatically captured using CaptureScreenshot() and Coroutine. it was too slow to work.
I have created a WPF application where I need to allow a user to draw a rectangle on an existing loaded image(tif image) and have it save the coordinates/the portion of the rectangle as a separate image.
I am using the Leadtools.Windows.Controls reference and using the RasterImageViewer
Below is the code for the event handler when the user has completed drawing the rectangle.
private void ImageViewer_InteractiveUserRectangle(object sender, RectangleInteractiveEventArgs e)
{
if (e.Status == InteractiveModeStatus.End)
{
var img = ImageViewer.Image;
var top =Convert.ToInt32(e.Bounds.Top);
var left = Convert.ToInt32(e.Bounds.Left);
var width = Convert.ToInt32(e.Bounds.Width);
var height = Convert.ToInt32(e.Bounds.Height);
var rect = new Leadtools.LeadRect(left, top, width, height);
var cmd = new Leadtools.ImageProcessing.CropCommand(rect);
cmd.Run(img);
_codecs.Save(img, #"c:\temp\test.tif",
RasterImageFormat.CcittGroup4, 1, 1, 1, -1, CodecsSavePageMode.Append);
}
}
I am getting a separate cropped image, but it does not match the area drawn with the rectangle. I have tried various methods from the examples but they were all for Windows Forms applications and not WPF. Any help with what I am missing would be greatly appreciated.
The issue is that the ImageViewer UserRectangle bounds returns the coordinates in Control coordiates and you need to convert these to Image Coordinates which the Crop Command is looking for.
According to the Documentation here:
https://www.leadtools.com/help/leadtools/v19/dh/wl/rectangleinteractiveeventargs-bounds.html
The coordinates are always in control (display) to image coordinates.
You can use PointToImageCoordinates and BoundsToImageCoordinates to
map a value in control or display coordinates (what is on screen) to
image coordinates (actual x and y location in the image pixels). You
can use PointFromImageCoordinates and BoundsFromImageCoordinates to
map a value in image coordinates (actual x and y location in t he
image pixels) to control or display coordinates (what is on screen).
Here is the updated code to make it work for you project:
if (e.Status == Leadtools.Windows.Controls.InteractiveModeStatus.End)
{
var img = imageViewer.Image;
var imgRect = imageViewer.BoundsToImageCoordinates(e.Bounds);
var top = Convert.ToInt32(imgRect.Top);
var left = Convert.ToInt32(imgRect.Left);
var width = Convert.ToInt32(imgRect.Width);
var height = Convert.ToInt32(imgRect.Height);
var rect = new Leadtools.LeadRect(left, top, width, height);
var cmd = new Leadtools.ImageProcessing.CropCommand(rect);
cmd.Run(img);
_codecs.Save(img, #"c:\temp\test.tif",
RasterImageFormat.CcittGroup4, 1, 1, 1, -1, CodecsSavePageMode.Append);
}
I am using xdk for phaser html 5 game development.
I am using sample click counter from their website but its not working. Can someone help me?
Here is the code below:
/* globals Phaser:false */
// create BasicGame Class
BasicGame = {
};
// create Game function in BasicGame
BasicGame.Game = function (game) {
};
var counter = 0;
// set Game function prototype
BasicGame.Game.prototype = {
init: function () {
// set up input max pointers
this.input.maxPointers = 1;
// set up stage disable visibility change
this.stage.disableVisibilityChange = true;
// Set up the scaling method used by the ScaleManager
// Valid values for scaleMode are:
// * EXACT_FIT
// * NO_SCALE
// * SHOW_ALL
// * RESIZE
// See http://docs.phaser.io/Phaser.ScaleManager.html for full document
this.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
// If you wish to align your game in the middle of the page then you can
// set this value to true. It will place a re-calculated margin-left
// pixel value onto the canvas element which is updated on orientation /
// resizing events. It doesn't care about any other DOM element that may
// be on the page, it literally just sets the margin.
this.scale.pageAlignHorizontally = true;
this.scale.pageAlignVertically = true;
// Force the orientation in landscape or portrait.
// * Set first to true to force landscape.
// * Set second to true to force portrait.
this.scale.forceOrientation(false, true);
// Sets the callback that will be called when the window resize event
// occurs, or if set the parent container changes dimensions. Use this
// to handle responsive game layout options. Note that the callback will
// only be called if the ScaleManager.scaleMode is set to RESIZE.
this.scale.setResizeCallback(this.gameResized, this);
// Set screen size automatically based on the scaleMode. This is only
// needed if ScaleMode is not set to RESIZE.
this.scale.updateLayout(true);
// Re-calculate scale mode and update screen size. This only applies if
// ScaleMode is not set to RESIZE.
this.scale.refresh();
},
preload: function () {
// Here we load the assets required for our preloader (in this case a
// background and a loading bar)
this.load.image('logo', 'asset/phaser.png');
},
create: function () {
// Add logo to the center of the stage
this.logo = this.add.sprite(
this.world.centerX, // (centerX, centerY) is the center coordination
this.world.centerY,
'logo');
// Set the anchor to the center of the sprite
this.logo.anchor.setTo(0.5, 0.5);
this.logo.inputEnabled = true;
this.logo.events.onInputDown.add(onClickListener, this);
//no add text on screen to check click counter
this.counterLabel = this.add.text(250, 16, '' , {fill:'FFFFFF'});
},
onClickListener: function() {
counter++;
this.counterLabel.text = "You clicked " + counter + " times!";
},
gameResized: function (width, height) {
// This could be handy if you need to do any extra processing if the
// game resizes. A resize could happen if for example swapping
// orientation on a device or resizing the browser window. Note that
// this callback is only really useful if you use a ScaleMode of RESIZE
// and place it inside your main game state.
}
};
It is throwing this Exception:
this.logo.events.onInputDown.add(onClickListener, this);
As onClickListener is sitting in BasicGame.Game.prototype you should get it from this:
this.logo.events.onInputDown.add(this.onClickListener, this);
I´ve been following this post about using an image overlay for bing maps:
http://blogs.msdn.com/b/bingdevcenter/archive/2014/04/04/image-overlays-with-bing-maps-native.aspx
What I want to now is to be able to add polygons/polylines on top of this image. Lets say for example that we use the following code:
(From here: http://blogs.bing.com/maps/2014/01/23/make-clickable-shapes-in-the-native-bing-maps-control/)
private void MyMapLoaded(object sender, RoutedEventArgs e)
{
//Add a shape layer to the map
shapeLayer = new MapShapeLayer();
MyMap.ShapeLayers.Add(shapeLayer);
//Create mock data points
var locs = new LocationCollection();
locs.Add(new Location(coordinates that are over the image));
locs.Add(new Location(coordinates that are over the image));
locs.Add(new Location(coordinates that are over the image));
//Create test polygon
var polygon = new MapPolygon();
polygon.Locations = locs;
polygon.FillColor = Colors.Red;
shapeLayer.Shapes.Add(polygon);
var locs2 = new LocationCollection();
locs2.Add(new Location(20, 20));
locs2.Add(new Location(40, 40));
locs2.Add(new Location(50, 20));
//Create test polyline
var polyline = new MapPolyline();
polyline.Locations = locs2;
polyline.Width = 5;
polyline.Color = Colors.Blue;
//Add the shape to the map
shapeLayer.Shapes.Add(polyline);
}
The problem is that the polygon/polyline will always appear beneath the image.
ShapeLayer has a property for z-index but it does not help. Is there a way for my polygons to always be on top?
Not sure why you want to do this, but you won't be able to show a MapPolygon above a user control that is added as a child of the map. That said, you can create WPF Polygons and added them. What you could do is create a custom user control that combines the image overlay functionality with something like this: http://blogs.msdn.com/b/bingdevcenter/archive/2014/03/25/custom-shapes-in-windows-store-apps-c.aspx
The main layout of my ScalaFX 8 application consists of a BorderPane. The top attribute contains a menu whereas bottom contains something similar to a status bar. My goal is to display a component for viewing 3D objects in the center of the BorderPane (acting as a SubScene).
stage = new PrimaryStage {
scene = new Scene(900, 900, true, SceneAntialiasing.Balanced) {
root = new BorderPane {
top = createMenu // creates a menu inside of a VBox
center = createViewer // should create a subscene inside of whatever is needed
bottom = createStatusBar // creates a status bar inside of a VBox
}
}
}
I'm trying to create a minimal working example with a SubScene that only consists of black background and a simple sphere, no more, no less. The SubScene should use the whole space that is available in the center of BorderPane and resize accordingly. Unfortunately, I can't make it work.
Since the size of a SubScene is fixed, I assume it is necessary to embed the SubScene in another container (which is able to resize automatically) and bind the dimensions of the SubScene to the dimensions of the container around it.
def createViewer = {
val bp = new BorderPane
val subScene: SubScene = new SubScene(bp, 200, 200, true, SceneAntialiasing.Balanced) {
fill = Color.Black
width <== bp.width
height <== bp.height
content = new Sphere(3) { material = new PhongMaterial(Color.Red) }
camera = new PerspectiveCamera(true) { ... }
}
bp.center = subScene
subScene
}
The result looks like this:
Two obvious problems:
The SubScene keeps the fixed size from its constructor. In neither "maximizes" in the center of the outer BorderPane, nor does it do anything when the window gets resized
There is the red dot, but the bottom right corner of the SubScene is not black (?)
My assumption is that I have some problems understanding what the root element of the SubScene really is and what it does. I found another thread for JavaFX with a similar problem, this solution distinguishes between the root element of the SubScene (I'm not sure where that element comes from) and the Pane but I couldn't apply it to my case. Any help is appreciated. Thanks.
the idea here is to get the read only properties for the top level scene there is probably a more elegant way to do this, but this works
scene = new Scene(900, 900, true, SceneAntialiasing.Balanced) {
// these are read only properties for the scene
var tmpw = this. width
var tmph = this. height
root = new BorderPane {
top = new HBox {
content = new Label {
text = "menu"
}
}
center = createView(tmpw, tmph)
}
}
width onChange show
height onChange show
}
the idea here is to bind the read only properties to the properties of the subscene, then
the subscene will re-size there is probably a way to avoid the 'this' key-word.
I have tested this and the subscene re-sizes with the parent scene. I have omitted the PerspectiveCamera code block as you did not include what you were using
def createView(boundWidth : ReadOnlyDoubleProperty, boundHeight : ReadOnlyDoubleProperty): BorderPane = {
new BorderPane {
center = new SubScene(boundWidth.get(), boundHeight.get(), true, SceneAntialiasing.Balanced) {
fill = Color.BLACK
content = new Sphere(3) { material = new PhongMaterial(Color.RED) }
camera = new PerspectiveCamera(true)
// bind the subscene properties to the parents
this.width.bind(boundWidth.add(-200))
this.height.bind(boundHeight.add(-200))
}
}
}