SVG files

SVG files can be converted to RIB but generally this will only give useful results for files constructed in a particular way. Specifically, overlapping elements must be in different groups or layers.


SVG file	Rendered using Aqsis

In the SVG file above, there is a hierarchy of groups:

Group	Objects
layer1	sky
layer2	sand
layer3	ocean, palm trunk
layer4	ball, palm fronds

A number of ribbify's command line options are SVG-specific:

-n value sets the number of segments to split a curve into

A filled path, composed of lines,arcs and Bezier segments, is rendered as a GeneralPolygon. The arcs and Bezier segments are approximated by a number of straight lines, specified by n.

-x value sets the z-offset of a stroke from the filled path

When a filled path has an associated stroke, the stroke needs to be offset by a small amount from the GeneralPolygon representing the filled path so that rounding errors don't cause rendering problems. The default value should work.

-z value sets the successive displacement of groups

When an image contains overlapping filled paths, these need to be separated along the z-axis to avoid rendering problems like those shown below:

output from a badly constructed SVG file

The default value should work OK. Only top-level groups will be z-separated.

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