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A Java based CSG Cad library
/*
* Copyright (c) 2013, 2014, Oracle and/or its affiliates.
* All rights reserved. Use is subject to license terms.
*
* This file is available and licensed under the following license:
*
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* 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.
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* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
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* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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package eu.mihosoft.vrl.v3d.ext.openjfx.importers;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.beans.property.Property;
import javafx.beans.value.WritableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableFloatArray;
import javafx.collections.ObservableIntegerArray;
import javafx.collections.ObservableList;
import javafx.collections.transformation.SortedList;
import javafx.geometry.Point2D;
import javafx.geometry.Point3D;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.shape.MeshView;
import javafx.scene.shape.TriangleMesh;
import javafx.scene.transform.Transform;
import javafx.util.Duration;
// TODO: Auto-generated Javadoc
/**
* Optimizer to take 3D model and timeline loaded by one of the importers and do as much optimization on
* the scene graph that was create as we can while still being able to play the given animation.
*/
public class Optimizer {
/** The timeline. */
private Timeline timeline;
/** The root. */
private Node root;
/** The bound. */
private Set bound = new HashSet<>();
/** The empty parents. */
private List emptyParents = new ArrayList<>();
/** The mesh views. */
private List meshViews = new ArrayList<>();
/** The convert to discrete. */
private boolean convertToDiscrete = true;
/**
* Instantiates a new optimizer.
*
* @param timeline the timeline
* @param root the root
*/
public Optimizer(Timeline timeline, Node root) {
this(timeline, root, false);
}
/**
* Instantiates a new optimizer.
*
* @param timeline the timeline
* @param root the root
* @param convertToDiscrete the convert to discrete
*/
public Optimizer(Timeline timeline, Node root, boolean convertToDiscrete) {
this.timeline = timeline;
this.root = root;
this.convertToDiscrete = convertToDiscrete;
}
/** The tr empty. */
private int trRemoved, trTotal, groupsTotal, trCandidate, trEmpty;
/**
* Optimize.
*/
public void optimize() {
trRemoved = 0;
trTotal = 0;
trCandidate = 0;
trEmpty = 0;
groupsTotal = 0;
emptyParents.clear();
parseTimeline();
optimize(root);
removeEmptyGroups();
optimizeMeshes();
System.out.printf("removed %d (%.2f%%) out of total %d transforms\n", trRemoved, 100d * trRemoved / trTotal, trTotal);
System.out.printf("there are %d more multiplications that can be done of matrices that never change\n", trCandidate);
System.out.printf("there are %d (%.2f%%) out of total %d groups with no transforms in them\n", trEmpty, 100d * trEmpty / groupsTotal, groupsTotal);
}
/**
* Optimize.
*
* @param node the node
*/
private void optimize(Node node) {
ObservableList transforms = node.getTransforms();
Iterator iterator = transforms.iterator();
boolean prevIsStatic = false;
while (iterator.hasNext()) {
Transform transform = iterator.next();
trTotal++;
if (transform.isIdentity()) {
if (timeline == null || !bound.contains(transform)) {
iterator.remove();
trRemoved++;
}
} else {
if (timeline == null || !bound.contains(transform)) {
if (prevIsStatic) {
trCandidate++;
}
prevIsStatic = true;
} else {
prevIsStatic = false;
}
}
}
if (node instanceof Parent) {
groupsTotal++;
Parent p = (Parent) node;
for (Node n : p.getChildrenUnmodifiable()) {
optimize(n);
}
if (transforms.isEmpty()) {
Parent parent = p.getParent();
if (parent instanceof Group) {
trEmpty++;
// System.out.println("Empty group = " + node.getId());
emptyParents.add(p);
} else {
// System.err.println("parent is not group = " + parent);
}
}
}
if (node instanceof MeshView) {
meshViews.add((MeshView) node);
}
}
/**
* Optimize meshes.
*/
private void optimizeMeshes() {
optimizePoints();
optimizeTexCoords();
optimizeFaces();
}
/**
* Optimize faces.
*/
private void optimizeFaces() {
int total = 0, sameIndexes = 0, samePoints = 0, smallArea = 0;
ObservableIntegerArray newFaces = FXCollections.observableIntegerArray();
ObservableIntegerArray newFaceSmoothingGroups = FXCollections.observableIntegerArray();
for (MeshView meshView : meshViews) {
TriangleMesh mesh = (TriangleMesh) meshView.getMesh();
ObservableIntegerArray faces = mesh.getFaces();
ObservableIntegerArray faceSmoothingGroups = mesh.getFaceSmoothingGroups();
ObservableFloatArray points = mesh.getPoints();
newFaces.clear();
newFaces.ensureCapacity(faces.size());
newFaceSmoothingGroups.clear();
newFaceSmoothingGroups.ensureCapacity(faceSmoothingGroups.size());
int pointElementSize = mesh.getPointElementSize();
int faceElementSize = mesh.getFaceElementSize();
for (int i = 0; i < faces.size(); i += faceElementSize) {
total++;
int i1 = faces.get(i) * pointElementSize;
int i2 = faces.get(i + 2) * pointElementSize;
int i3 = faces.get(i + 4) * pointElementSize;
if (i1 == i2 || i1 == i3 || i2 == i3) {
sameIndexes++;
continue;
}
Point3D p1 = new Point3D(points.get(i1), points.get(i1 + 1), points.get(i1 + 2));
Point3D p2 = new Point3D(points.get(i2), points.get(i2 + 1), points.get(i2 + 2));
Point3D p3 = new Point3D(points.get(i3), points.get(i3 + 1), points.get(i3 + 2));
if (p1.equals(p2) || p1.equals(p3) || p2.equals(p3)) {
samePoints++;
continue;
}
double a = p1.distance(p2);
double b = p2.distance(p3);
double c = p3.distance(p1);
double p = (a + b + c) / 2;
double sqarea = p * (p - a) * (p - b) * (p - c);
final float DEAD_FACE = 1.f/1024/1024/1024/1024; // taken from MeshNormal code
if (sqarea < DEAD_FACE) {
smallArea++;
// System.out.printf("a = %e, b = %e, c = %e, sqarea = %e\n"
// + "p1 = %s\np2 = %s\np3 = %s\n", a, b, c, sqarea, p1.toString(), p2.toString(), p3.toString());
continue;
}
newFaces.addAll(faces, i, faceElementSize);
int fIndex = i / faceElementSize;
if (fIndex < faceSmoothingGroups.size()) {
newFaceSmoothingGroups.addAll(faceSmoothingGroups.get(fIndex));
}
}
faces.setAll(newFaces);
faceSmoothingGroups.setAll(newFaceSmoothingGroups);
faces.trimToSize();
faceSmoothingGroups.trimToSize();
}
int badTotal = sameIndexes + samePoints + smallArea;
System.out.printf("Removed %d (%.2f%%) faces with same point indexes, "
+ "%d (%.2f%%) faces with same points, "
+ "%d (%.2f%%) faces with small area. "
+ "Total %d (%.2f%%) bad faces out of %d total.\n",
sameIndexes, 100d * sameIndexes / total,
samePoints, 100d * samePoints / total,
smallArea, 100d * smallArea / total,
badTotal, 100d * badTotal / total, total);
}
/**
* Optimize points.
*/
private void optimizePoints() {
int total = 0, duplicates = 0, check = 0;
Map pp = new HashMap<>();
ObservableIntegerArray reindex = FXCollections.observableIntegerArray();
ObservableFloatArray newPoints = FXCollections.observableFloatArray();
for (MeshView meshView : meshViews) {
TriangleMesh mesh = (TriangleMesh) meshView.getMesh();
ObservableFloatArray points = mesh.getPoints();
int pointElementSize = mesh.getPointElementSize();
int os = points.size() / pointElementSize;
pp.clear();
newPoints.clear();
newPoints.ensureCapacity(points.size());
reindex.clear();
reindex.resize(os);
for (int i = 0, oi = 0, ni = 0; i < points.size(); i += pointElementSize, oi++) {
float x = points.get(i);
float y = points.get(i + 1);
float z = points.get(i + 2);
Point3D p = new Point3D(x, y, z);
Integer index = pp.get(p);
if (index == null) {
pp.put(p, ni);
reindex.set(oi, ni);
newPoints.addAll(x, y, z);
ni++;
} else {
reindex.set(oi, index);
}
}
int ns = newPoints.size() / pointElementSize;
int d = os - ns;
duplicates += d;
total += os;
points.setAll(newPoints);
points.trimToSize();
ObservableIntegerArray faces = mesh.getFaces();
for (int i = 0; i < faces.size(); i += 2) {
faces.set(i, reindex.get(faces.get(i)));
}
// System.out.printf("There are %d (%.2f%%) duplicate points out of %d total for mesh '%s'.\n",
// d, 100d * d / os, os, meshView.getId());
check += mesh.getPoints().size() / pointElementSize;
}
System.out.printf("There are %d (%.2f%%) duplicate points out of %d total.\n",
duplicates, 100d * duplicates / total, total);
System.out.printf("Now we have %d points.\n", check);
}
/**
* Optimize tex coords.
*/
private void optimizeTexCoords() {
int total = 0, duplicates = 0, check = 0;
Map pp = new HashMap<>();
ObservableIntegerArray reindex = FXCollections.observableIntegerArray();
ObservableFloatArray newTexCoords = FXCollections.observableFloatArray();
for (MeshView meshView : meshViews) {
TriangleMesh mesh = (TriangleMesh) meshView.getMesh();
ObservableFloatArray texcoords = mesh.getTexCoords();
int texcoordElementSize = mesh.getTexCoordElementSize();
int os = texcoords.size() / texcoordElementSize;
pp.clear();
newTexCoords.clear();
newTexCoords.ensureCapacity(texcoords.size());
reindex.clear();
reindex.resize(os);
for (int i = 0, oi = 0, ni = 0; i < texcoords.size(); i += texcoordElementSize, oi++) {
float x = texcoords.get(i);
float y = texcoords.get(i + 1);
Point2D p = new Point2D(x, y);
Integer index = pp.get(p);
if (index == null) {
pp.put(p, ni);
reindex.set(oi, ni);
newTexCoords.addAll(x, y);
ni++;
} else {
reindex.set(oi, index);
}
}
int ns = newTexCoords.size() / texcoordElementSize;
int d = os - ns;
duplicates += d;
total += os;
texcoords.setAll(newTexCoords);
texcoords.trimToSize();
ObservableIntegerArray faces = mesh.getFaces();
for (int i = 1; i < faces.size(); i += 2) {
faces.set(i, reindex.get(faces.get(i)));
}
// System.out.printf("There are %d (%.2f%%) duplicate texcoords out of %d total for mesh '%s'.\n",
// d, 100d * d / os, os, meshView.getId());
check += mesh.getTexCoords().size() / texcoordElementSize;
}
System.out.printf("There are %d (%.2f%%) duplicate texcoords out of %d total.\n",
duplicates, 100d * duplicates / total, total);
System.out.printf("Now we have %d texcoords.\n", check);
}
/**
* Clean up repeating frames and values.
*/
private void cleanUpRepeatingFramesAndValues() {
ObservableList timelineKeyFrames = timeline.getKeyFrames().sorted(new KeyFrameComparator());
// Timeline timeline;
int kfTotal = timelineKeyFrames.size(), kfRemoved = 0;
int kvTotal = 0, kvRemoved = 0;
Map kfUnique = new HashMap<>();
Map kvUnique = new HashMap<>();
MapOfLists duplicates = new MapOfLists<>();
Iterator iterator = timelineKeyFrames.iterator();
while (iterator.hasNext()) {
KeyFrame duplicate = iterator.next();
KeyFrame original = kfUnique.put(duplicate.getTime(), duplicate);
if (original != null) {
kfRemoved++;
iterator.remove(); // removing duplicate keyFrame
duplicates.add(original, duplicate);
kfUnique.put(duplicate.getTime(), original);
}
kvUnique.clear();
for (KeyValue kvDup : duplicate.getValues()) {
kvTotal++;
KeyValue kvOrig = kvUnique.put(kvDup.getTarget(), kvDup);
if (kvOrig != null) {
kvRemoved++;
if (!kvOrig.getEndValue().equals(kvDup.getEndValue()) && kvOrig.getTarget() == kvDup.getTarget()) {
System.err.println("KeyValues set different values for KeyFrame " + duplicate.getTime() + ":"
+ "\n kvOrig = " + kvOrig + ", \nkvDup = " + kvDup);
}
}
}
}
for (KeyFrame orig : duplicates.keySet()) {
List keyValues = new ArrayList<>();
for (KeyFrame dup : duplicates.get(orig)) {
keyValues.addAll(dup.getValues());
}
timelineKeyFrames.set(timelineKeyFrames.indexOf(orig),
new KeyFrame(orig.getTime(), keyValues.toArray(new KeyValue[keyValues.size()])));
}
System.out.printf("Removed %d (%.2f%%) duplicate KeyFrames out of total %d.\n",
kfRemoved, 100d * kfRemoved / kfTotal, kfTotal);
System.out.printf("Identified %d (%.2f%%) duplicate KeyValues out of total %d.\n",
kvRemoved, 100d * kvRemoved / kvTotal, kvTotal);
}
/**
* The Class KeyInfo.
*/
private static class KeyInfo {
/** The key frame. */
KeyFrame keyFrame;
/** The key value. */
KeyValue keyValue;
/** The first. */
boolean first;
/**
* Instantiates a new key info.
*
* @param keyFrame the key frame
* @param keyValue the key value
*/
public KeyInfo(KeyFrame keyFrame, KeyValue keyValue) {
this.keyFrame = keyFrame;
this.keyValue = keyValue;
first = false;
}
/**
* Instantiates a new key info.
*
* @param keyFrame the key frame
* @param keyValue the key value
* @param first the first
*/
public KeyInfo(KeyFrame keyFrame, KeyValue keyValue, boolean first) {
this.keyFrame = keyFrame;
this.keyValue = keyValue;
this.first = first;
}
}
/**
* The Class MapOfLists.
*
* @param the key type
* @param the value type
*/
private static class MapOfLists extends HashMap> {
/**
* Adds the.
*
* @param key the key
* @param value the value
*/
public void add(K key, V value) {
List p = get(key);
if (p == null) {
p = new ArrayList<>();
put(key, p);
}
p.add(value);
}
}
/**
* Parses the timeline.
*/
private void parseTimeline() {
bound.clear();
if (timeline == null) {
return;
}
// cleanUpRepeatingFramesAndValues(); // we don't need it usually as timeline is initially correct
SortedList sortedKeyFrames = timeline.getKeyFrames().sorted(new KeyFrameComparator());
MapOfLists toRemove = new MapOfLists<>();
Map prevValues = new HashMap<>();
Map prevPrevValues = new HashMap<>();
int kvTotal = 0;
for (KeyFrame keyFrame : sortedKeyFrames) {
for (KeyValue keyValue : keyFrame.getValues()) {
WritableValue target = keyValue.getTarget();
KeyInfo prev = prevValues.get(target);
kvTotal++;
if (prev != null && prev.keyValue.getEndValue().equals(keyValue.getEndValue())) {
// if (prev != null && (prev.keyValue.equals(keyValue) || (prev.first && prev.keyValue.getEndValue().equals(keyValue.getEndValue())))) {
KeyInfo prevPrev = prevPrevValues.get(target);
if ((prevPrev != null && prevPrev.keyValue.getEndValue().equals(keyValue.getEndValue()))
|| (prev.first && target.getValue().equals(prev.keyValue.getEndValue()))) {
// All prevPrev, prev and current match, so prev can be removed
// or prev is first and its value equals to the property existing value, so prev can be removed
toRemove.add(prev.keyFrame, prev.keyValue);
} else {
prevPrevValues.put(target, prev);
// KeyInfo oldKeyInfo = prevPrevValues.put(target, prev);
// if (oldKeyInfo != null && oldKeyInfo.keyFrame.getTime().equals(prev.keyFrame.getTime())) {
// System.err.println("prevPrev replaced more than once per keyFrame on " + target + "\n"
// + "old = " + oldKeyInfo.keyFrame.getTime() + ", " + oldKeyInfo.keyValue + "\n"
// + "new = " + prev.keyFrame.getTime() + ", " + prev.keyValue
// );
// }
}
}
KeyInfo oldPrev = prevValues.put(target, new KeyInfo(keyFrame, keyValue, prev == null));
if (oldPrev != null) prevPrevValues.put(target, oldPrev);
}
}
// Deal with ending keyValues
for (WritableValue target : prevValues.keySet()) {
KeyInfo prev = prevValues.get(target);
KeyInfo prevPrev = prevPrevValues.get(target);
if (prevPrev != null && prevPrev.keyValue.getEndValue().equals(prev.keyValue.getEndValue())) {
// prevPrev and prev match, so prev can be removed
toRemove.add(prev.keyFrame, prev.keyValue);
}
}
int kvRemoved = 0;
int kfRemoved = 0, kfTotal = timeline.getKeyFrames().size(), kfSimplified = 0, kfNotRemoved = 0;
// Removing unnecessary KeyValues and KeyFrames
List newKeyValues = new ArrayList<>();
for (int i = 0; i < timeline.getKeyFrames().size(); i++) {
KeyFrame keyFrame = timeline.getKeyFrames().get(i);
List keyValuesToRemove = toRemove.get(keyFrame);
if (keyValuesToRemove != null) {
newKeyValues.clear();
for (KeyValue keyValue : keyFrame.getValues()) {
if (keyValuesToRemove.remove(keyValue)) {
kvRemoved++;
} else {
if (convertToDiscrete) {
newKeyValues.add(new KeyValue((WritableValue)keyValue.getTarget(), keyValue.getEndValue(), Interpolator.DISCRETE));
} else {
newKeyValues.add(keyValue);
}
}
}
} else if (convertToDiscrete) {
newKeyValues.clear();
for (KeyValue keyValue : keyFrame.getValues()) {
newKeyValues.add(new KeyValue((WritableValue)keyValue.getTarget(), keyValue.getEndValue(), Interpolator.DISCRETE));
}
}
if (keyValuesToRemove != null || convertToDiscrete) {
if (newKeyValues.isEmpty()) {
if (keyFrame.getOnFinished() == null) {
if (keyFrame.getName() != null) {
System.err.println("Removed KeyFrame with name = " + keyFrame.getName());
}
timeline.getKeyFrames().remove(i);
i--;
kfRemoved++;
continue; // for i
} else {
kfNotRemoved++;
}
} else {
keyFrame = new KeyFrame(keyFrame.getTime(), keyFrame.getName(), keyFrame.getOnFinished(), newKeyValues);
timeline.getKeyFrames().set(i, keyFrame);
kfSimplified++;
}
}
// collecting bound targets
for (KeyValue keyValue : keyFrame.getValues()) {
WritableValue target = keyValue.getTarget();
if (target instanceof Property) {
Property p = (Property) target;
Object bean = p.getBean();
if (bean instanceof Transform) {
bound.add((Transform) bean);
} else {
throw new UnsupportedOperationException("Bean is not transform, bean = " + bean);
}
} else {
throw new UnsupportedOperationException("WritableValue is not property, can't identify what it changes, target = " + target);
}
}
}
// System.out.println("bound.size() = " + bound.size());
System.out.printf("Removed %d (%.2f%%) repeating KeyValues out of total %d.\n", kvRemoved, 100d * kvRemoved / kvTotal, kvTotal);
System.out.printf("Removed %d (%.2f%%) and simplified %d (%.2f%%) KeyFrames out of total %d. %d (%.2f%%) were not removed due to event handler attached.\n",
kfRemoved, 100d * kfRemoved / kfTotal,
kfSimplified, 100d * kfSimplified / kfTotal, kfTotal, kfNotRemoved, 100d * kfNotRemoved / kfTotal);
int check = 0;
for (KeyFrame keyFrame : timeline.getKeyFrames()) {
check += keyFrame.getValues().size();
// for (KeyValue keyValue : keyFrame.getValues()) {
// if (keyValue.getInterpolator() != Interpolator.DISCRETE) {
// throw new IllegalStateException();
// }
// }
}
System.out.printf("Now there are %d KeyValues and %d KeyFrames.\n", check, timeline.getKeyFrames().size());
}
/**
* Removes the empty groups.
*/
private void removeEmptyGroups() {
for (Parent p : emptyParents) {
Parent parent = p.getParent();
Group g = (Group) parent;
g.getChildren().addAll(p.getChildrenUnmodifiable());
g.getChildren().remove(p);
}
}
/**
* The Class KeyFrameComparator.
*/
private static class KeyFrameComparator implements Comparator {
/**
* Instantiates a new key frame comparator.
*/
public KeyFrameComparator() {
}
/* (non-Javadoc)
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
@Override public int compare(KeyFrame o1, KeyFrame o2) {
// int compareTo = o1.getTime().compareTo(o2.getTime());
// if (compareTo == 0 && o1 != o2) {
// System.err.println("those two KeyFrames are equal: o1 = " + o1.getTime() + " and o2 = " + o2.getTime());
// }
return o1.getTime().compareTo(o2.getTime());
}
}
}