makearrowscript.xsl

Copyright&copy 2004 Sergiu Dumitriu, Marta G&icirc rdea, C&#259 t&#259 lin Hri&#355 cu Permission is

<?xml version="1.0" encoding="UTF-8"?>
<!--
Template: MakeArrowScript.xsl

Outputs the script that handles the Stimuli Arrows directions
-->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.w3.org/2000/svg" xmlns:UML="org.omg.xmi.namespace.UML">
	<xsl:output media-type="image/svg+xml" method="xml" indent="yes"/>

	<!-- MakeArrowScript -->
	<xsl:template name="MakeArrowScript">
		<script type="text/ecmascript"><xsl:text disable-output-escaping="yes">&lt;![CDATA[<![CDATA[
	function OrientArrows(){
		var descriptions = document.getElementsByTagName('desc');
		for(i = 0; i < descriptions.length; i++){
			if((descriptions.item(i).childNodes.item(0).nodeValue == 'SyncronousArrow') || (descriptions.item(i).childNodes.item(0).nodeValue == 'AsyncronousArrow')){
				var parentg = titles.item(i).parentNode;
				var rotate = getStimulusArrowRotation(parentg);
				transform = parentg.getAttribute('transform');
				transform += ' rotate(' + rotate + ')';
				parentg.setAttribute('transform', transform);
			}
		}
	}

	function getStimulusArrowRotation(Node){
		var pathparentg = Node.parentNode.parentNode;
		var path;
		for(k = 0; k < pathparentg.childNodes.length; k++){
			if(pathparentg.childNodes.item(k).localName == 'path'){
				pathdata = pathparentg.childNodes.item(k).getAttribute('d');
				break;
			}
		}

		pathsegments = pathdata.split(' ');
		var pathpoints = new Array();
		pathpoints[0] = pathsegments[1];
		pathpoints[1] = pathsegments[2];
		for(k = 4; k < pathsegments.length - 1; k++){
			pathpoints[pathpoints.length] = pathsegments[k];
		}

		var MinDistance = null;
		var Rotation = 0;
		transform = Node.getAttribute('transform');
		parentTransform = Node.parentNode.getAttribute('transform');
		xp = parseFloat(transform.split('(')[1].split(',')[0]) + parseFloat(parentTransform.split('(')[1].split(',')[0]);
		yp = parseFloat(transform.split(',')[1].split(')')[0]) + parseFloat(parentTransform.split(',')[1].split(')')[0]);

		for(k = 0; k < pathpoints.length / 2 - 1; k++){
			xa = pathpoints[2*k];
			ya = pathpoints[2*k+1];
			xb = pathpoints[2*k+2];
			yb = pathpoints[2*k+3];
			if(xa == xb){
				d = Math.abs(xa - xp);
				if((d < MinDistance) || (MinDistance == null)){
					MinDistance = d;
					if(ya < yb) Rotation = -90;
					else Rotation = 90;
				}
			}
			else{
				m = (yb-ya)/(xb-xa);
				n = ya - xa*m;
				y = (m*m*yp - m*xp - n)/(m*m-1);
				x = m*y-m*yp+xp;
				if((xa < xb && xa <= x && x <= xb) || (xb < xa && xb <= x && x <= xa)){
					d = Math.sqrt((x-xp)*(x-xp) + (y-yp)*(y-yp));
				}
				else{
					DistanceToA = Math.sqrt((xp-xa)*(xp-xa) + (yp-ya)*(yp-ya));
					DistanceToB = Math.sqrt((xp-xb)*(xp-xb) + (yp-yb)*(yp-yb));
					d = DistanceToA < DistanceToB ? DistanceToA : DistanceToB;
				}
				if((d < MinDistance) || (MinDistance == null)){
					MinDistance = d;
					Rotation = Math.atan(m) * 180 / Math.PI;
					if(xa < xb){
						Rotation += 180;
					}
				}
			}
		}
		return Rotation;
	}
		]]>]]&gt;</xsl:text>
		</script>
	</xsl:template>
</xsl:stylesheet>