![]() Since the Neon effect relies on multiple shadows, we run into a problem in each vector object can only have one shadow. In a more complex example, such as the Neon effect found on Line25, the shadowBlur property must be used to emulate the effect properly. offsetHeight Preventing alpha-multiplication # the value to multiply PX 's by to convert to EM 's cssText = "font: " + font + " height: 1em display: block" ![]() We can find the conversion ratio for converting between PT, PC, EM, EX, PX and so-forth by creating an element with the same font-properties in DOM, and setting the width to the format to be measured or instance, to capture the EM -> PX conversion, we 'd measure the DOM element with a "height: 1em", the resulting offsetHeight would be how many PX 's are in each EM. EM 's aren 't supported in so they 'll have to be converted to PX 's.There is no shadow-blur (the third value), so there is no reason to actually run shadow, as fillText would create the same results: var text = "Hello world!".There are two things to notice when converting this string to : With the following line of CSS, we can create the illusion of depth when viewed with 3D red/cyan glasses (the kind they give you at 3D movies): text-shadow : -0.06em 0 0 red, 0.06em 0 0 cyan ![]() The stereoscopic 3D effect (see Anaglyph image for more) is an example of a simple line of code, put to great use. Searching through Google images for "css text-shadow" led to a few great demos for us to emulate Line25, and Stereoscopic, and Shadow 3D. To get things started, let 's see how can emulate CSS effects. ctx.shadowBlur = 10 // integer Blurring effect to the shadow, the larger the value, the greater the blur. ctx.shadowOffsetY = 0 // integer Vertical distance of the shadow, in relation to the text. ctx.shadowOffsetX = 0 // integer Horizontal distance of the shadow, in relation to the text. To create a shadow in, tap into these four properties: ctx.shadowColor = "red" // string Color of the shadow RGB, RGBA, HSL, HEX, and other inputs are valid. has one type of shadow it 's used for all the vector objects ctx.moveTo, ctx.lineTo, ctx.bezierCurveTo, ctx.quadradicCurveTo, ctx.arc, ctx.rect, ctx.fillText, ctx.strokeText, and so on. It 's important to realize the differences between CSS and shadows, specifically:ĬSS uses two methods box-shadow for box-elements, such as div, span, and so on and text-shadow for text content. One of my favorite additions to CSS3 specs (along with border-radius, web-gradients, and others) is the ability to create shadows. Generative based text-effect in using hsl() color-cycling and window.requestAnimationFrame to create the feeling of motion. anti-clockwise winding to create the inverse of a drop-shadow (the inner-shadow). Inner and outer shadows in Revealing a little known feature using clockwise vs. Photoshop-like text-effects in examples of using globalCompositeOperation, createLinearGradient, createPattern. Neon-rainbow, zebra-reflection - chaining effects. CSS-like text-effects in creating clipping masks, finding metrics in, and using the shadow property. Although we 're dealing with "text" in this article, the methods can be applied to any vector objects creating exciting visuals in games, and other applications: Text-Shadows in. The variety of text-effects that can be created in are as vast as you can imagine - these demos cover a sub-section of what is possible. The following examples deal with one area in that hasnt gotten much attention creating text-effects. brings Javascript programmers full-control of the colors, vectors and pixels on their screens - the visual makeup of the monitor. Darkroom is a non-destructive photo-sharing app, combining the powers of pixel-based filters with vector-based typography and drawing. These experiments eventually led to the creation of the startup Mugtug with my long-time friend Charles Pritchard. Which immersed me into the world of colors, and graphic primitives inspiring the creation of Sketchpad (2007-2008) in an effort to put together an application "better than Paint" in the browser. An article on Ajaxian, describing the transformation matrix, inspired me to create my first web-app Color Sphere (2007). entered my awareness in 2006 when Firefox v2.0 was released. Creating animations with requestAnimationFrame.Neon-rainbow, zebra-reflection-chaining effects.Intermission (tangent on pixel-pushing).
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