Struct rsvg::filter::ViewportGen

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struct ViewportGen {
    object_bounding_box: Viewport,
    user_space_on_use: Viewport,
}
Expand description

Holds the viewport parameters for both objectBoundingBox and userSpaceOnUse units.

When collecting a set of filter primitives (feFoo) into a FilterSpec, which is in user space, we need to convert each primitive’s units into user space units. So, pre-compute both cases and pass them around.

This struct needs a better name; I didn’t want to make it seem specific to filters by calling FiltersViewport or FilterCollectionProcessViewport. Maybe the original Viewport should be this struct, with both cases included…

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§object_bounding_box: Viewport§user_space_on_use: Viewport

Implementations§

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impl ViewportGen

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pub fn new(viewport: &Viewport) -> Self

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fn get(&self, units: CoordUnits) -> &Viewport

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