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[Librsvg-devel] Implementation of rsvg_bbox_render_path

From: Hagen Schink <hagen.schink@st...> - 2008-10-11 17:17

Hi,

I came across a small problem while implementing the feature request for the function rsvg_handle_get_dimensions_sub() (bug 555682).

While I tested the function I noticed that it returns false dimension data for path elements. I guess it's because rsvg_bbox_render_path() (rsvg-base.c line 1212 and the following) doesn't implement a proper handling for curves.

I'd like to discuss possible solutions for this problem. I have two possible solutions in mind but maybe there are other and/or better ones.

(1) Use a mathematical approach which means compute the height of the curve (Bézier curve) and implement the case for RSVG_CURVETO. I didn't find any formulas in the web so I tried to make my own computations so far. Other ideas or links are appreciated. :-)

(2) Draw the curve via Cairo and take the bounding box from there.

Hagen

Re: [Librsvg-devel] Implementation of rsvg_bbox_render_path

From: Dominic Lachowicz <domlachowicz@gm...> - 2008-10-11 19:56

Hi,

> (1) Use a mathematical approach which means compute the height of the curve (Bézier curve) and implement the case for RSVG_CURVETO. I didn't find any formulas in the web so I tried to make my own computations so far. Other ideas or links are appreciated. :-)

#1 please :)

Thanks again,
Dom

LibRSVG

Email Archive: librsvg-devel (read-only)

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