/*
* SVG Salamander
* Copyright (c) 2004, Mark McKay
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*/
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
{
public static final String TAG_NAME = "marker";
AffineTransform viewXform;
AffineTransform markerXform;
Rectangle2D viewBox;
float refX;
float refY;
float markerWidth = 3;
float markerHeight = 3;
float orient = Float.NaN;
boolean markerUnitsStrokeWidth = true; //if set to false 'userSpaceOnUse' is assumed
public String getTagName()
{
return TAG_NAME;
}
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);
}
if (getPres(sty.setName("markerUnits")))
{
String markerUnits = sty.getStringValue();
if (markerUnits != null && markerUnits.equals("userSpaceOnUse"))
{
markerUnitsStrokeWidth = false;
}
}
//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);
if (markerUnitsStrokeWidth)
{
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];
//Best in tangent
if (px != k0x || py != k0y)
{
markerIn(px, py, k0x - px, k0y - py);
} else
{
markerIn(px, py, x - px, y - py);
}
//Best out tangent
if (x != k0x || y != k0y)
{
markerOut(x, y, x - k0x, y - k0y);
} else
{
markerOut(x, y, x - px, y - py);
}
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];
//Best in tangent
if (px != k0x || py != k0y)
{
markerIn(px, py, k0x - px, k0y - py);
} else if (px != k1x || py != k1y)
{
markerIn(px, py, k1x - px, k1y - py);
} else
{
markerIn(px, py, x - px, y - py);
}
//Best out tangent
if (x != k1x || y != k1y)
{
markerOut(x, y, x - k1x, y - k1y);
} else if (x != k0x || y != k0y)
{
markerOut(x, y, x - k0x, y - k0y);
} else
{
markerOut(x, y, x - px, y - py);
}
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;
}
}
}