Posts (page 27)
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11 min readThe Keltner Channels is a popular technical analysis tool used by traders to identify potential price reversals and determine entry and exit points in the financial markets. They consist of three lines plotted on a price chart: the middle line (typically a simple moving average), an upper channel line, and a lower channel line.To trade with Keltner Channels, traders primarily focus on two main signals: breakouts and extreme price levels.
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9 min readThe Arms Index, also known as the TRading INdex (TRIN), is a technical analysis tool used in the financial markets to gauge the overall market sentiment. It helps traders and investors to identify overbought or oversold conditions and potential reversals in the market. When it comes to scalping, which is a short-term trading strategy aiming to profit from small price movements, understanding and utilizing the Arms Index can be beneficial.
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11 min readMigrating from Python to C++ involves transitioning a software project written in Python code to one implemented in C++. Python and C++ are both popular programming languages, but there are notable differences between them in terms of syntax, performance, memory management, and development paradigms.Firstly, Python is known for its simplicity and ease of use. Its syntax emphasizes readability and encourages writing clean and concise code.
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9 min readTo export canvas content as an image or PDF file, you can follow these steps:Begin by creating or opening the canvas that contains the desired content.Ensure that the content you want to export is included in the canvas.On the canvas, click on the "File" menu located at the top left corner of the software interface.From the drop-down menu, select the "Export" option.Another menu will appear, presenting various export options.
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7 min readTo create a responsive drawing canvas with varying line thickness, you'll need to utilize JavaScript and HTML5's canvas element. Here's a high-level explanation of the steps involved:Set up your HTML file: Create a canvas element on your page with the desired width and height. Give it an ID so you can target it in JavaScript. Get the canvas context: In your JavaScript code, get the reference to the canvas element using its ID.
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9 min readTo load and display external images on a canvas, you can follow these steps:Create a canvas element in your HTML file where you want to display the image: <canvas id="myCanvas"></canvas> In your JavaScript code, access the canvas using its ID: var canvas = document.getElementById("myCanvas"); var ctx = canvas.
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9 min readCreating a 3D effect on a 2D canvas involves using various techniques to simulate depth and dimension. Here are some approaches you can use:Perspective: Start by drawing objects that are further away smaller in size compared to those closer to the viewer. This gives the perception of depth and distance. Shading: Apply shading techniques such as light and shadow to create depth.
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6 min readImplementing undo and redo functionality on a canvas can be done using a stack data structure. Here's a high-level explanation of how you can achieve this:Create a stack to store the canvas state changes. Let's call it the "undo stack" initially.Keep track of the current state of the canvas.When a change is made on the canvas, such as drawing a shape or moving an object, save the current state of the canvas onto the undo stack.
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8 min readPixel manipulation on a canvas involves accessing individual pixels and altering their color values. Here is a step-by-step explanation of how to achieve pixel manipulation on a canvas:Create a canvas element in your HTML file: <canvas id="myCanvas" width="400" height="400"></canvas> Get a reference to the canvas element in your JavaScript code: const canvas = document.
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9 min readTo effectively use patterns and textures on a canvas, there are a few key principles to consider. First, it's important to understand the difference between patterns and textures.Patterns refer to repeated designs or motifs, while textures involve the physical or visual quality of a surface, such as roughness, smoothness, or the appearance of brushstrokes. Utilizing patterns and textures can add visual interest, depth, and complexity to your artwork.
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3 min readTo handle keyboard events on a canvas, you need to follow a few steps. Here's an explanation without using list items:First, you need to access the canvas element in your HTML document using JavaScript. You can achieve this by using the document.getElementById() method and passing the ID of your canvas element.Next, you need to add an event listener to the canvas element. The event listener will listen for keyboard events, such as key presses or key releases.
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6 min readTo create a drawing tool on a canvas, you can follow these steps:HTML Setup: Start by creating an HTML document and include a canvas element. Give the canvas a width and height using the width and height attributes. JavaScript Setup: In your JavaScript code, get a reference to the canvas element using the document.getElementById() method. Store it in a variable for future use. Context Setup: Obtain the 2D drawing context of the canvas by calling the getContext() method.