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Stormin' The Castle | A Software and Technology Blog by John Robinson

Stormin' The Castle. A Software and Technology Blog by John Robinson. Adjusting Image Brightness and Color Using the HTML5 Canvas API. Posted by John Robinson. On October 6, 2013. Ever needed to adjust the brightness of an image? Or maybe you’d like to make an image feel warmer by increasing it’s red channel? As a followup to my earlier articles, “ How You Can Do Cool Image Effects Using HTML5 Canvas. 8221; and “ How You Can Build an HTML5 Photobooth App. Read more ». Posted by John Robinson. How You Can...

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Stormin' The Castle. A Software and Technology Blog by John Robinson. Adjusting Image Brightness and Color Using the HTML5 Canvas API. Posted by John Robinson. On October 6, 2013. Ever needed to adjust the brightness of an image? Or maybe you’d like to make an image feel warmer by increasing it’s red channel? As a followup to my earlier articles, “ How You Can Do Cool Image Effects Using HTML5 Canvas. 8221; and “ How You Can Build an HTML5 Photobooth App. Read more ». Posted by John Robinson. How You Can...

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Stormin' The Castle | A Software and Technology Blog by John Robinson | thejohnrobinson.com Reviews

https://thejohnrobinson.com

Stormin' The Castle. A Software and Technology Blog by John Robinson. Adjusting Image Brightness and Color Using the HTML5 Canvas API. Posted by John Robinson. On October 6, 2013. Ever needed to adjust the brightness of an image? Or maybe you’d like to make an image feel warmer by increasing it’s red channel? As a followup to my earlier articles, “ How You Can Do Cool Image Effects Using HTML5 Canvas. 8221; and “ How You Can Build an HTML5 Photobooth App. Read more ». Posted by John Robinson. How You Can...

INTERNAL PAGES

thejohnrobinson.com

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Image Filters!

http://www.thejohnrobinson.com/projects/imagefilters1

Article and Sample App by John Robinson. To open your own image you can click the open button or drag and drop an image to this window. Your browser does not support the canvas tag.

2

Introduction to HTML5 Canvas | Stormin' The Castle

http://www.thejohnrobinson.com/2013/05/20/introduction-to-html5-canvas

Stormin' The Castle. A Software and Technology Blog by John Robinson. Introduction to HTML5 Canvas. Posted by John Robinson. On May 20, 2013. Maybe you’ve heard of the HTML 5 Canvas API, but don’t know what it’s good for…? Maybe you’ve heard that it’s the way to go if you want to code an HTML5 game? Or maybe you’ve heard that it gives you explicit control over drawing in your browser? So what does all that mean? 8230; Just what is the HTML5 Canvas API? Defining Paths with lines, curves, arcs and more.

3

Essential Canvas for HTML5 by John Robinson - eBook

http://www.thejohnrobinson.com/essentialcanvas

DRAW and ANIMATE with the HTML5 CANVAS API! Sure it's pretty easy to draw a line or an ellipse, but that's a far far cry away from doing something useful. How in the Heck Do You Make the Canvas Animate Things? You'd Love to Draw and Animate using the HTML5 Canvas API. Whether you want to write your own HTML5 game or you need to add image editing to your latest web app or you're just dying to learn more about the Canvas API, Essential Canvas for HTML5 is the one resource that you need in your arsenal!

4

Adjusting Image Brightness and Color Using the HTML5 Canvas API | Stormin' The Castle

http://www.thejohnrobinson.com/2013/10/06/color-matrix-filters-using-the-html5-canvas

Stormin' The Castle. A Software and Technology Blog by John Robinson. Adjusting Image Brightness and Color Using the HTML5 Canvas API. Posted by John Robinson. On October 6, 2013. Ever needed to adjust the brightness of an image? Or maybe you’d like to make an image feel warmer by increasing it’s red channel? As a followup to my earlier articles, “ How You Can Do Cool Image Effects Using HTML5 Canvas. 8221; and “ How You Can Build an HTML5 Photobooth App. R' = 0.393r 0.769g 0.189b 0. Var grayscaleMatrix ...

5

How You Can Draw Regular Polygons with the HTML5 Canvas API | Stormin' The Castle

http://www.thejohnrobinson.com/2013/07/24/how-you-can-draw-regular-polygons-with-the-html5-canvas-api

Stormin' The Castle. A Software and Technology Blog by John Robinson. How You Can Draw Regular Polygons with the HTML5 Canvas API. Posted by John Robinson. On July 24, 2013. So maybe you need to draw a pentagon? How about just a simple equilateral triangle? Drop me a note on Twitter, if you’d like to see an article on star-shaped regular polygons. In order to understand an algorithm for drawing a regular polygon. Let’s look at the interrelationship of all regular polygons to a circle. A:a; ctx.save()...

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Stormin' The Castle. A Software and Technology Blog by John Robinson. Adjusting Image Brightness and Color Using the HTML5 Canvas API. Posted by John Robinson. On October 6, 2013. Ever needed to adjust the brightness of an image? Or maybe you’d like to make an image feel warmer by increasing it’s red channel? As a followup to my earlier articles, “ How You Can Do Cool Image Effects Using HTML5 Canvas. 8221; and “ How You Can Build an HTML5 Photobooth App. Read more ». Posted by John Robinson. How You Can...

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