Implementing arrowheads in a line

Question

Hello We have been implementing Illustrator plugins since past 7 years. This is the first time we are phasing a problem with the documentation to implement arrowhead for a line! The line is being drawn using sAIShapeConstruction->NewLinePoint (oStart, oEnd, poHandle); and stroke width and other things like colors can be done using AIPathStyles sAIPathStyle->GetPathStyle(oArtHandle, &oPathStyle, &oAdvFill);
oPathStyle.stroke.width = 0.1 * kPointsPerMM;
sAIPathStyle->SetPathStyle (oArtHandle, &oPathStyle); However, on both sides of the line, I need to implement arrowheads and I could not find any information in the SDK documentation as to how to implement that! Can you please help? Thank youMusten Jiruwala

A. Patterson · Answer

This is a bit annoying to do, but you basically have to get the path's AIArtStyle, parse it (AIArtStyleParser) get the stroke you want to update and then modify its paint field with the AIBeautifulStrokes::SetArrowheadOptions. The arrow heads themselves are a style you'll have to pull in somehow, and you apply something like this:

error = sAIBeautifulStrokes->SetArrowheadOptions(strokeEffectsDictionary, 0, &arrowHeadStyle, kAIRealUnknown, arrowHeadScale, alignment);

I'd post more code but (a) it's internal code I'm not allowed to share and (b) it's riddled with helper classes I've written to make this tedious code easier to manage. Hopefully that's enough to get you to where you need to be though.

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