Bug 12925

Summary: PathTraversalState's normalAngleAtLength/pointAtLength don't work.
Product: WebKit Reporter: Nikolas Zimmermann <zimmermann>
Component: SVGAssignee: Nikolas Zimmermann <zimmermann>
Severity: Normal    
Priority: P2    
Version: 523.x (Safari 3)   
Hardware: Mac   
OS: OS X 10.4   
Description Flags
Initial patch
Update patch darin: review+

Description Nikolas Zimmermann 2007-02-28 03:46:21 PST
Path::pointAtLength() uses PathTraversalState to iterate through the segments. This comment says it all: "// FIXME: Need to actually find the exact point and change m_current".

For Path::normalAngleAtLength() to work the tangent slope calculation has to be corrected. Attaching patch to fix both.
Comment 1 Nikolas Zimmermann 2007-02-28 03:47:59 PST
*** Bug 12924 has been marked as a duplicate of this bug. ***
Comment 2 Nikolas Zimmermann 2007-02-28 03:50:26 PST
Created attachment 13419 [details]
Initial patch

Not marking for review, as it's probably not being accepted in the stabilization spree.
Comment 3 Nikolas Zimmermann 2007-02-28 05:48:39 PST
Created attachment 13420 [details]
Update patch

Just realized that the pointAtLength() stuff is actally exposed via SVGPathElement's interfaces. We shouldn't release it that buggy - added new LayoutTest covering that these methods actually work. Not a P1, but still marking for review - as it would be annoying to release Safari with that bug.
Comment 4 Darin Adler 2007-03-04 23:00:33 PST
Comment on attachment 13420 [details]
Update patch

+            static float rad2deg = 180.0 / M_PI;

Really should include "const" in there too.

Is there a way to test this so that the results are numeric instead of visual? If so, I'd love to see a test like that as well as the visual one!

Comment 5 Nikolas Zimmermann 2007-03-05 16:19:56 PST
Landed in r19970.