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/*
 * Copyright 1998-2008 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

package org.scijava.java3d;

import java.awt.font.GlyphVector;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;

import org.scijava.vecmath.Point3d;
import org.scijava.vecmath.Point3f;
import org.scijava.vecmath.Vector3f;

/**
 * Implements Text3D class.
 */
class Text3DRetained extends GeometryRetained {
    /**
     * Packaged scope variables needed for implementation
     */
    Font3D      font3D = null;
    String      string = null;
    Point3f     position = new Point3f(0.0f, 0.0f, 0.0f);
    int         alignment = Text3D.ALIGN_FIRST, path = Text3D.PATH_RIGHT;
    float       charSpacing = 0.0f;
    int         numChars = 0;
    static final int  targetThreads = (J3dThread.UPDATE_TRANSFORM |
				       J3dThread.UPDATE_GEOMETRY |
				       J3dThread.UPDATE_RENDER);
    /**
     * The temporary transforms for this Text3D
     */
    Transform3D[] charTransforms = new Transform3D[0];

    /**
     * A cached list of geometry arrays for the current settings
     */
    GeometryArrayRetained[] geometryList = new GeometryArrayRetained[0];
    GlyphVector[] glyphVecs = new GlyphVector[0];

    /**
     * Bounding box data for this text string.
     */
    Point3d lower = new Point3d();
    Point3d upper = new Point3d();


    /**
     * An Array list used for messages
     */
    ArrayList newGeometryAtomList = new ArrayList();
    ArrayList oldGeometryAtomList = new ArrayList();


    /**
     * temporary model view matrix for immediate mode only
     */
    Transform3D vpcToEc;
    Transform3D drawTransform;


    Text3DRetained(){
       this.geoType = GEO_TYPE_TEXT3D;
    }


    @Override
    synchronized void computeBoundingBox() {
	Point3d l = new Point3d();
	Point3d u = new Point3d();
        Vector3f location = new Vector3f(this.position);
        int i, k=0, numTotal=0;
        double width = 0, height = 0;
        Rectangle2D bounds;

        //Reset bounds data
        l.set(location);
        u.set(location);

	if (numChars != 0) {
	    // Set loop counters based on path type
	    if (path == Text3D.PATH_RIGHT || path == Text3D.PATH_UP) {
		k = 0;
		numTotal = numChars + 1;
	    } else if (path == Text3D.PATH_LEFT || path == Text3D.PATH_DOWN) {
		k = 1;
		numTotal = numChars;
		// Reset bounds to bounding box if first character
		bounds = glyphVecs[0].getVisualBounds();
		u.x += bounds.getWidth();
		u.y += bounds.getHeight();
	    }

	    for (i=1; iposition field into the supplied
     * parameter.  The position is used to determine the
     * initial placement of the Text3D string.  The position, combined with
     * the path and alignment control how the text is displayed.
     *
     * @param position the point to position the text.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     *
     * @see #getAlignment
     * @see #getPath
     */
    final void getPosition(Point3f position) {
        position.set(this.position);
    }

    /**
     * Sets the node's position field to the supplied
     * parameter.  The position is used to determine the
     * initial placement of the Text3D string.  The position, combined with
     * the path and alignment control how the text is displayed.
     *
     * @param position the point to position the text.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     *
     * @see #getAlignment
     * @see #getPath
     */
    final void setPosition(Point3f position) {
	geomLock.getLock();
        this.position.set(position);
        updateTransformData();
	geomLock.unLock();
        sendTransformChangedMessage();
    }

    /**
     * Retrieves the text alignment policy for this Text3D NodeComponent
     * object. The alignment is used to specify how
     * glyphs in the string are placed in relation to the
     * position field.  Valid values for this field
     * are:
     * 
     *  ALIGN_CENTER - the center of the string is placed on the
     *  position point.
     * 
 ALIGN_FIRST - the first character of the string is placed on
     *   the position point.
     * 
 ALIGN_LAST - the last character of the string is placed on the
     *   position point.
     * 
     * The default value of this field is ALIGN_FIRST.
     *
     * @return the current alingment policy for this node.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     *
     * @see #getPosition
     */
    final int getAlignment() {
        return alignment;
    }

    /**
     * Sets the text alignment policy for this Text3D NodeComponent
     * object. The alignment is used to specify how
     * glyphs in the string are placed in relation to the
     * position field.  Valid values for this field
     * are:
     * 
     *  ALIGN_CENTER - the center of the string is placed on the
     *  position point.
     * 
 ALIGN_FIRST - the first character of the string is placed on
     *   the position point.
     * 
 ALIGN_LAST - the last character of the string is placed on the
     *   position point.
     * 
     * The default value of this field is ALIGN_FIRST.
     *
     * @return the current alingment policy for this node.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     *
     * @see #getPosition
     */
    final void setAlignment(int alignment) {
	geomLock.getLock();
        this.alignment = alignment;
        updateTransformData();
	geomLock.unLock();
        sendTransformChangedMessage();
    }

    /**
     * Retrieves the node's path field.  This field
     * is used  to specify how succeeding
     * glyphs in the string are placed in relation to the previous glyph.
     * Valid values for this field are:
     * 
     *  PATH_LEFT: - succeeding glyphs are placed to the left of the
     *  current glyph.
     * 
 PATH_RIGHT: - succeeding glyphs are placed to the right of the
     *  current glyph.
     * 
 PATH_UP: - succeeding glyphs are placed above the current glyph.
     * 
 PATH_DOWN: - succeeding glyphs are placed below the current glyph.
     * 
     * The default value of this field is PATH_RIGHT.
     *
     * @return the current alingment policy for this node.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     */
    final int getPath() {
        return this.path;
    }

    /**
     * Sets the node's path field.  This field
     * is used  to specify how succeeding
     * glyphs in the string are placed in relation to the previous glyph.
     * Valid values for this field are:
     * 
     *  PATH_LEFT - succeeding glyphs are placed to the left of the
     *  current glyph.
     * 
 PATH_RIGHT - succeeding glyphs are placed to the right of the
     *  current glyph.
     * 
 PATH_UP - succeeding glyphs are placed above the current glyph.
     * 
 PATH_DOWN - succeeding glyphs are placed below the current glyph.
     * 
     * The default value of this field is PATH_RIGHT.
     *
     * @param path the value to set the path to.
     *
     * @return the current alingment policy for this node.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     */
    final void setPath(int path) {
        this.path = path;
        updateTransformData();
        sendTransformChangedMessage();
    }

    /**
     * Retrieves the 3D bounding box that encloses this Text3D object.
     *
     * @param bounds the object to copy the bounding information to.
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     *
     * @see BoundingBox
     */
    final void getBoundingBox(BoundingBox bounds) {
	synchronized (this) {
            bounds.setLower(lower);
            bounds.setUpper(upper);
	}
    }

    /**
     * Retrieves the character spacing used to construct the Text3D string.
     * This spacing is in addition to the regular spacing between glyphs as
     * defined in the Font object.  1.0 in this space is measured as the
     * width of the largest glyph in the 2D Font.  The default value is
     * 0.0.
     *
     * @return the current character spacing value
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     */
    final float getCharacterSpacing() {
	return charSpacing;
    }

    /**
     * Sets the character spacing used hwne constructing the Text3D string.
     * This spacing is in addition to the regular spacing between glyphs as
     * defined in the Font object.  1.0 in this space is measured as the
     * width of the largest glyph in the 2D Font.  The default value is
     * 0.0.
     *
     * @param characterSpacing the new character spacing value
     *
     * @exception CapabilityNotSetException if appropriate capability is
     * not set and this object is part of live or compiled scene graph
     */
    final void setCharacterSpacing(float characterSpacing) {
	geomLock.getLock();
	this.charSpacing = characterSpacing;
        updateTransformData();
	geomLock.unLock();
        sendTransformChangedMessage();
    }


    final void sendDataChangedMessage() {
	J3dMessage[] m;
	int i, j, k, kk, numMessages;
	int gSize;
	ArrayList gaList;
	GeometryAtom[] newGeometryAtoms;
	ArrayList tiArrList = new ArrayList();
	ArrayList newCtArrArrList = new ArrayList();

	synchronized(liveStateLock) {
	    if (source.isLive()) {
		synchronized (universeList) {
		    numMessages = universeList.size();
		    m = new J3dMessage[numMessages];
		    for (i=0; i shapeList = userLists.get(i);
			newGeometryAtomList.clear();
			oldGeometryAtomList.clear();

			for (j=0; j 0) {
			    m[i].args[2] = tiArrList.toArray();
			    m[i].args[3] = newCtArrArrList.toArray();
			}

			tiArrList.clear();
			newCtArrArrList.clear();

		    }
		    VirtualUniverse.mc.processMessage(m);
		}

	    }
	}
    }


    final void sendTransformChangedMessage() {
	J3dMessage[] m;
	int i, j, numMessages, sCnt;
	ArrayList gaList = new ArrayList();
	GeometryRetained geomR;
	synchronized(liveStateLock) {
	    if (source.isLive()) {
		synchronized (universeList) {
		    numMessages = universeList.size();
		    m = new J3dMessage[numMessages];
		    for (i=0; i shapeList = userLists.get(i);
			// gaList = new GeometryAtom[shapeList.size() * numChars];
			for (j = 0; j < shapeList.size(); j++) {
				Shape3DRetained s = shapeList.get(j);

			    // Find the right geometry.
			    for(sCnt=0; sCnt= 0) {
	    // We need to transform iPnt to the vworld to compute the actual distance.
	    // In this method we'll transform iPnt by its char. offset. Shape3D will
	    // do the localToVworld transform.
	    iPnt.set(closestIPnt);
	    charTransforms[sIndex].transform(iPnt);
	    return true;
	}
	return false;
    }

    @Override
    boolean intersect(Point3d[] pnts) {
	Transform3D tempT3D = new Transform3D();
	GeometryArrayRetained ga;
	boolean isIntersect = false;
	Point3d transPnts[] = new Point3d[pnts.length];
	for (int j=pnts.length-1; j >= 0; j--) {
	    transPnts[j] = new Point3d();
	}

	for (int i=numChars-1; i >= 0;  i--) {
	    ga = geometryList[i];
	    if ( ga != null) {
		tempT3D.invert(charTransforms[i]);
		for (int j=pnts.length-1; j >= 0; j--) {
		    tempT3D.transform(pnts[j], transPnts[j]);
		}
		if (ga.intersect(transPnts)) {
		    isIntersect = true;
		    break;
		}
	    }
	}
	return isIntersect;
    }


    @Override
    boolean intersect(Transform3D thisToOtherVworld, GeometryRetained geom) {
	GeometryArrayRetained ga;

	for (int i=numChars-1; i >=0; i--) {
	    ga = geometryList[i];
	    if ((ga != null) && ga.intersect(thisToOtherVworld, geom)) {
		return true;
	    }
	}

	return false;
    }

    @Override
    boolean intersect(Bounds targetBound) {
	GeometryArrayRetained ga;

	for (int i=numChars-1; i >=0; i--) {
	    ga = geometryList[i];
	    if ((ga != null) && ga.intersect(targetBound)) {
		return true;
	    }
	}

	return false;

    }

    void setModelViewMatrix(Transform3D vpcToEc, Transform3D drawTransform) {
	this.vpcToEc = vpcToEc;
	this.drawTransform = drawTransform;
    }


    @Override
    void execute(Canvas3D cv, RenderAtom ra, boolean isNonUniformScale,
		 boolean updateAlpha, float alpha,
		 int screen,
		 boolean ignoreVertexColors) {

	Transform3D trans = new Transform3D();

	for (int i = 0; i < geometryList.length; i++) {
	    trans.set(drawTransform);
	    trans.mul(charTransforms[i]);
	    cv.setModelViewMatrix(cv.ctx, vpcToEc.mat, trans);
	    geometryList[i].execute(cv, ra, isNonUniformScale, updateAlpha, alpha,
				    screen, ignoreVertexColors);
	}
    }

    @Override
    int getClassType() {
	return TEXT3D_TYPE;
    }


    ArrayList getUniqueSource(ArrayList shapeList) {
	ArrayList uniqueList = new ArrayList();
	int size = shapeList.size();
	Object src;
	int i, index;

	for (i=0; i