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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.kitfox.svg;
import com.kitfox.svg.xml.StyleAttribute;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
/**
*
* @author kitfox
*/
public class Marker extends Group
{
AffineTransform viewXform;
AffineTransform markerXform;
Rectangle2D viewBox;
float refX;
float refY;
float markerWidth = 3;
float markerHeight = 3;
float orient = Float.NaN;
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("refX"))) refX = sty.getFloatValueWithUnits();
if (getPres(sty.setName("refY"))) refY = sty.getFloatValueWithUnits();
if (getPres(sty.setName("markerWidth"))) markerWidth = sty.getFloatValueWithUnits();
if (getPres(sty.setName("markerHeight"))) markerHeight = sty.getFloatValueWithUnits();
if (getPres(sty.setName("orient")))
{
if ("auto".equals(sty.getStringValue()))
{
orient = Float.NaN;
}
else
{
orient = sty.getFloatValue();
}
}
if (getPres(sty.setName("viewBox")))
{
float[] dim = sty.getFloatList();
viewBox = new Rectangle2D.Float(dim[0], dim[1], dim[2], dim[3]);
}
if (viewBox == null)
{
viewBox = new Rectangle(0, 0, 1, 1);
}
//Transform pattern onto unit square
viewXform = new AffineTransform();
viewXform.scale(1.0 / viewBox.getWidth(), 1.0 / viewBox.getHeight());
viewXform.translate(-viewBox.getX(), -viewBox.getY());
markerXform = new AffineTransform();
markerXform.scale(markerWidth, markerHeight);
markerXform.concatenate(viewXform);
markerXform.translate(-refX, -refY);
}
protected boolean outsideClip(Graphics2D g) throws SVGException
{
Shape clip = g.getClip();
Rectangle2D rect = super.getBoundingBox();
if (clip == null || clip.intersects(rect))
{
return false;
}
return true;
}
public void render(Graphics2D g) throws SVGException
{
AffineTransform oldXform = g.getTransform();
g.transform(markerXform);
super.render(g);
g.setTransform(oldXform);
}
public void render(Graphics2D g, MarkerPos pos, float strokeWidth) throws SVGException
{
AffineTransform cacheXform = g.getTransform();
g.translate(pos.x, pos.y);
g.scale(strokeWidth, strokeWidth);
g.rotate(Math.atan2(pos.dy, pos.dx));
g.transform(markerXform);
super.render(g);
g.setTransform(cacheXform);
}
public Shape getShape()
{
Shape shape = super.getShape();
return markerXform.createTransformedShape(shape);
}
public Rectangle2D getBoundingBox() throws SVGException
{
Rectangle2D rect = super.getBoundingBox();
return markerXform.createTransformedShape(rect).getBounds2D();
}
/**
* Updates all attributes in this diagram associated with a time event.
* Ie, all attributes with track information.
* @return - true if this node has changed state as a result of the time
* update
*/
public boolean updateTime(double curTime) throws SVGException
{
boolean changeState = super.updateTime(curTime);
//Marker properties do not change
return changeState;
}
//--------------------------------
public static final int MARKER_START = 0;
public static final int MARKER_MID = 1;
public static final int MARKER_END = 2;
public static class MarkerPos
{
int type;
double x;
double y;
double dx;
double dy;
public MarkerPos(int type, double x, double y, double dx, double dy)
{
this.type = type;
this.x = x;
this.y = y;
this.dx = dx;
this.dy = dy;
}
}
public static class MarkerLayout
{
private ArrayList markerList = new ArrayList();
boolean started = false;
public void layout(Shape shape)
{
double px = 0;
double py = 0;
double[] coords = new double[6];
for (PathIterator it = shape.getPathIterator(null);
!it.isDone(); it.next())
{
switch (it.currentSegment(coords))
{
case PathIterator.SEG_MOVETO:
px = coords[0];
py = coords[1];
started = false;
break;
case PathIterator.SEG_CLOSE:
started = false;
break;
case PathIterator.SEG_LINETO:
{
double x = coords[0];
double y = coords[1];
markerIn(px, py, x - px, y - py);
markerOut(x, y, x - px, y - py);
px = x;
py = y;
break;
}
case PathIterator.SEG_QUADTO:
{
double k0x = coords[0];
double k0y = coords[1];
double x = coords[2];
double y = coords[3];
markerIn(px, py, k0x - px, k0y - py);
markerOut(x, y, x - k0x, y - k0y);
px = x;
py = y;
break;
}
case PathIterator.SEG_CUBICTO:
{
double k0x = coords[0];
double k0y = coords[1];
double k1x = coords[2];
double k1y = coords[3];
double x = coords[4];
double y = coords[5];
markerIn(px, py, k0x - px, k0y - py);
markerOut(x, y, x - k1x, y - k1y);
px = x;
py = y;
break;
}
}
}
for (int i = 1; i < markerList.size(); ++i)
{
MarkerPos prev = (MarkerPos)markerList.get(i - 1);
MarkerPos cur = (MarkerPos)markerList.get(i);
if (cur.type == MARKER_START)
{
prev.type = MARKER_END;
}
}
MarkerPos last = (MarkerPos)markerList.get(markerList.size() - 1);
last.type = MARKER_END;
}
private void markerIn(double x, double y, double dx, double dy)
{
if (started == false)
{
started = true;
markerList.add(new MarkerPos(MARKER_START, x, y, dx, dy));
}
}
private void markerOut(double x, double y, double dx, double dy)
{
markerList.add(new MarkerPos(MARKER_MID, x, y, dx, dy));
}
/**
* @return the markerList
*/
public ArrayList getMarkerList()
{
return markerList;
}
}
}
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