Posts (page 9)
-
7 min readTo extract an image from another using KineticJS, you can first create a stage and layer with KineticJS. Then, load both images onto the layer. Use the toDataURL method on the source image to get its data URL. Create a new image object with the source image's data URL using JavaScript. Set the new image as the source for the destination image. Draw the destination image onto the layer and add the layer to the stage.
-
5 min readTo draw an animated gif with KineticJS, first you will need to create a Kinetic.Stage object to hold all of your layers. Next, create a Kinetic.Layer object to hold your images and animations. Then, load your gif image using the Kinetic.Image class and add it to your layer.To animate the gif, you can use the Kinetic.Animation class to update the frame of the gif image at a specified interval. You can use the getImage() method of the Kinetic.
-
5 min readTo create a circular clip using KineticJS, you first need to create a circle shape that will act as the clipping region. You can do this by creating a new Kinetic.Circle object and specifying the center coordinates, radius, and other properties as needed.Next, you'll need to create any content that you want to clip within this circular region. This could be another shape, image, or text element.
-
4 min readTo add CSS style to KineticJS, you can use the .setCSS method on the object you want to style. This method allows you to apply CSS styles directly to the object, such as background color, text color, font size, padding, etc. The CSS styles will be applied to the object in addition to the existing KineticJS styles, giving you more control over the appearance of your shapes and text. Simply pass the desired CSS styles as a string to the .setCSS method, and the styles will be applied to the object.
-
5 min readTo make animation out of canvas images in KineticJS, you first need to create a stage and a layer using KineticJS. Then, you can load your images onto the stage using the Kinetic.Image object. Once you have your images loaded onto the stage, you can use the Kinetic.Animation object to create and control the animation.To animate the images, you can use the frameRate property of the Kinetic.Animation object to set the speed of the animation.
-
4 min readOnce you have created your animation using KineticJS, you can easily incorporate sound effects to enhance the overall user experience.One way to do this is by incorporating HTML5 audio elements directly into your KineticJS animation code. You can add event listeners to trigger the playback of specific sound effects at key points in your animation.Another option is to use a library such as Howler.js, which simplifies the process of working with audio in web applications. With Howler.
-
4 min readTo get a canvas in fullscreen mode with KineticJS, you can use the requestFullscreen method to expand the canvas to cover the entire screen. First, you need to select the canvas element using the document.getElementById() method. Then, you can call the requestFullscreen method on the canvas element to make it go full screen. Additionally, you can use the KineticJS stage's width and height properties to set the canvas size to the screen dimensions for a better viewing experience.
-
6 min readTo show a tooltip on dynamic images using KineticJS, you can follow these steps: First, create a Kinetic image object for the dynamic image you want to show the tooltip on. Next, attach a mouseover event listener to the image object. Within the event listener function, create a Kinetic tooltip object with the desired text. Set the tooltip's position relative to the mouse cursor or the image object.
-
7 min readTo track the animation frame count in KineticJS, you can create a variable to store the frame count and increment it each time the animation frame updates. You can do this by setting up an event listener for the animation frame event and updating the frame count variable accordingly. Additionally, you can log the frame count to the console or display it on the canvas to monitor the animation progress.
-
6 min readTo change the color of a set of nodes in KineticJS, you need to access each node in the set and update its fill or stroke properties. You can do this by iterating through the set of nodes and applying the new color to each one individually.Here is a basic example of how you can change the color of a set of nodes in KineticJS:Create a new Kinetic.Shape object for each node in the set.Iterate through the set of nodes using a loop.
-
3 min readTo get a value from a KineticJS object, you can use the appropriate method or property provided by the specific object type. For example, if you want to get the X and Y coordinates of a shape object, you can use the getX() and getY() methods. If you want to get the fill color of a shape object, you can use the getFill() method.Alternatively, you can also access and modify the properties directly by using dot notation.
-
4 min readTo hide all group children using KineticJS, you can iterate through each child of the group and set their visibility to false. Here is an example code snippet that demonstrates this: var group = new Kinetic.Group(); // Add children to the group group.getChildren().forEach(function(child) { child.hide(); }); // Alternatively, you can use the setVisible() method: // group.getChildren().forEach(function(child) { // child.