Basic SVG Elements and Shapes

Jan 17, 2003

📄 Contents

␡

The line Element
The rect Element
The circle Element
The ellipse Element
The polyline Element
The polygon Element
Color in SVG
Gradients in SVG
SVG Patterns
SVG DOM Interfaces for the SVG Basic Shapes
Other SVG DOM Interfaces
Summary

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The ellipse Element

The circle element is adequate to describe a circle but is inadequate to describe an ellipse because an ellipse has two radii, an x radius and a y radius. The SVG ellipse element is used to describe an ellipse. The center of the ellipse is described, as with the circle element, using a cx and a cy attribute. The x radius of an ellipse is described using an rx attribute, and the y radius is described using an ry attribute. Listing 3.11 shows how we can describe a simple ellipse using the ellipse element.

Listing 3.11 SimpleEllipse.svg—A Simple SVG Ellipse

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="400" height="300">
<ellipse cx="200" cy="100" rx="150" ry="50"
 style="stroke:#FF0000; stroke-width:2; fill:#FFFFFF"/>
</svg>

An ellipse element may be animated by any of the SVG animation elements—animate, set, animateColor, animateMotion, or animateTransform—which are described in Chapter 11.

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