web: hit testing problem (tools)

[michael]

The parallel line tool doesn't work properly when the mouse is inside a circle (even a large one) inside a polygon or eg near a segment.
http://www.geogebra.org/web/milestones/ggbWebTools.html

The preview line should follow the mouse exactly unless the mouse goes near a POINT

(NB click on a line to activate the preview)

[michael]

It's more obvious with the Polygon (16) Tool - you can't place a point inside a circle

[michael]

It's just just for Tools, it's for all conic hit testing. The problem is that this isn't implemented in geogebra.web.awt.BasicStroke so we can't tell if points are on the edge or inside

	public geogebra.common.awt.Shape createStrokedShape(
            geogebra.common.awt.Shape shape) {
	    AbstractApplication.debug("implementation needed"); // TODO Auto-generated
	    return shape;
    }
	

[michael]

Fixed for conics:
http://www.geogebra.org/trac/changeset/15453

Still needs fixing for Loci, DrawConicPart, PolyLine & Parametric curves

[michael]

This should fix it properly:
http://www.geogebra.org/trac/changeset/15456

(not fully tested yet)