Welcome to Bucaro TecHelp!

Bucaro TecHelp
HTTPS Encryption not required because no account numbers or
personal information is ever requested or accepted by this site

About Bucaro TecHelp About BTH User Agreement User Agreement Privacy Policy Privacy Site Map Site Map Contact Bucaro TecHelp Contact RSS News Feeds News Feeds

SVG Image Masking

<svg width="450" height="320" version="1.1" xmlns="http://www.w3.org/2000/svg" style="border-style:solid;">
   <radialGradient id="fade">
       <stop offset="0%" stop-color="white" stop-opacity="1.0" />
       <stop offset="50%" stop-color="white" stop-opacity="0.7" />
       <stop offset="100%" stop-color="white" stop-opacity="0.0" />
   </radialGradient>

   <mask id="fademask">
      <ellipse cx="225" cy="150" rx="225" ry="150" fill="url(#fade)" />
   </mask>

   <image xlink:href="http://bucarotechelp.com/design/graphics/images/leaves.jpg" x="0" y="0" width="480" height="353" mask="url(#fademask)" />
</svg>

Masking is a similar to clipping, except that clipping defines an area of a graphic element that will be visible and makes a sharp boarder between the visible and clipped areas. A mask defines an area where each pixel of the mask has a degree of transparency and opaqueness that lets some of the graphic element show through, making a blurry boundary between the visible and masked areas.

In the example shown above, a radial gradient is defined and given an id of "fade". A mask is defined and given an id of "fademask". The radial gradient is then used as the fill of the mask. The image leaves.jpg is then loaded with xlink:href and the mask is used with the mask attribute in the leaves image tag.

A mask works by using its alpha channel to allow or block pixels of the image from showing through. The less opaque a part of the mask is, the less visible that part of the image will be. you can make the mask stop-colors any color you like, but it will turn out white in the result because mask uses only the transparency bits of the mask.

More Graphics Design Tips:
• Building an Image with a Logo
• Introduction to X3D (Extensible 3D)
• Graphic Design Meets Open Source
• Inkscape Preferences
• How to Remove PNG and JPEG EXIF Metadata
• How to Make a Video Game for your Xbox for Free
• Graphics Design for Beginners - Cropping Images
• An Insight to Logos
• How to Trace an Image Using Photoshop
• Stop Motion Animation: Nine Creative and Easy Techniques

RSS Feed RSS Feed


Follow Stephen Bucaro Follow @Stephen Bucaro


Fire HD
[Site User Agreement] [Privacy Policy] [Site map] [Search This Site] [Contact Form]
Copyright©2001-2019 Bucaro TecHelp 13771 N Fountain Hills Blvd Suite 114-248 Fountain Hills, AZ 85268