Skip to content

I
imagej-elphel
Commit 7e53b24d authored by Andrey Filippov's avatar Andrey Filippov
Browse files
Options

serialization/deserialization

parent 860cbc5f
Hide whitespace changes
Inline Side-by-side
Showing with 105 additions and 32 deletions
src/main/java/com/elphel/imagej/tileprocessor/lwoc/LwocLeaf.java
View file @ 7e53b24d
......@@ -24,11 +24,12 @@
package com.elphel.imagej.tileprocessor.lwoc;
import java.io.Serializable;
import java.util.ArrayList;
public class LwocLeaf {
public class LwocLeaf implements Serializable{
private static final long serialVersionUID = 1L;
ArrayList <LwocMesh> meshes;
transient ArrayList <LwocMesh> meshes; // will be rebuilt with LwocOctree.rebuildMeshLists()
ArrayList <LwocMesh> mesh_centers;
ArrayList <LwocScene> scenes;
public LwocLeaf() {
......
src/main/java/com/elphel/imagej/tileprocessor/lwoc/LwocMesh.java
View file @ 7e53b24d
......@@ -24,13 +24,13 @@
package com.elphel.imagej.tileprocessor.lwoc;
import java.util.ArrayList;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
public class LwocMesh {
private static final long serialVersionUID = 1L;
public class LwocMesh implements Serializable {
private static final long serialVersionUID = 1L;
static AtomicInteger MESH_ID = new AtomicInteger();
static ArrayList<LwocMesh> LWOC_MESHES;
// static ArrayList<LwocMesh> LWOC_MESHES;
int id; // assign unique ID
String stimestamp; // mesh is always referenced to a single scene
double [] world_xyz; // world coordinates of the center
......@@ -38,7 +38,7 @@ public class LwocMesh {
public static void resetMeshes() {
MESH_ID.set(0);
LWOC_MESHES = new ArrayList<LwocMesh>();
// LWOC_MESHES = new ArrayList<LwocMesh>();
}
// maybe use mesh properties instead of id?
public boolean equals (LwocMesh other_mesh) {
......@@ -49,7 +49,7 @@ public class LwocMesh {
) {
this.stimestamp = stimestamp;
id = MESH_ID.getAndIncrement();
LWOC_MESHES.add(this);
// LWOC_MESHES.add(this);
}
public double [] getCenter() {
......
src/main/java/com/elphel/imagej/tileprocessor/lwoc/LwocOctree.java
View file @ 7e53b24d
......@@ -24,11 +24,17 @@
package com.elphel.imagej.tileprocessor.lwoc;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import com.elphel.imagej.common.MultiThreading;
public class LwocOctree {
public class LwocOctree implements Serializable {
private static final long serialVersionUID = 1L;
public static final int NUM_CHILDREN = 8;
public static double MIN_HSIZE = 0.3; // meter - do not subdivide more
......@@ -36,7 +42,7 @@ public class LwocOctree {
public static int MAX_MESH_CENTERS = 10; // maximal number of meshes in a leaf;
public static int MAX_CAMERAS = 10; // maximal number of cameras in a leaf;
public static LwocOctree lwoc_root = null;
static ArrayList<LwocOctree> LWOK_OCTREE = new ArrayList<LwocOctree>();
// static ArrayList<LwocOctree> LWOK_OCTREE = new ArrayList<LwocOctree>();
static AtomicInteger OCTREE_ID = new AtomicInteger();
static List<LwocScene> pendingScenes; // synchronized - add not-yet-added scenes pending growing world
......@@ -51,6 +57,79 @@ public class LwocOctree {
double [] center; // x-center, y-center, z-center
double hsize;
/**
* Serialize and write world to an output stream
* @param oos ObjectOutputStream to write to.
* @throws IOException
*/
private void writeObject(ObjectOutputStream oos)
throws IOException {
oos.defaultWriteObject();
if (parent == null) { // write static members
oos.writeObject(MIN_HSIZE);
oos.writeObject(MAX_MESH_CENTERS);
oos.writeObject(MAX_CAMERAS);
oos.writeObject(OCTREE_ID.get());
oos.writeObject(LwocMesh.MESH_ID.get());
}
}
/**
* Read input stream and deserialize it to world octree structure.
* @param ois ObjectInputStream to read from
* @throws ClassNotFoundException
* @throws IOException
*/
private void readObject(ObjectInputStream ois)
throws ClassNotFoundException, IOException {
ois.defaultReadObject();
if (parent == null) { // read static members
MIN_HSIZE = (Double) ois.readObject();
MAX_MESH_CENTERS = (Integer) ois.readObject();
MAX_CAMERAS = (Integer) ois.readObject();
OCTREE_ID.set( (Integer) ois.readObject());
LwocMesh.MESH_ID.set((Integer) ois.readObject());
}
}
/**
*
* @param path
*/
public static void saveWorld(String path) {
try {
FileOutputStream fileOut = new FileOutputStream(path);
ObjectOutputStream out = new ObjectOutputStream(fileOut);
out.writeObject(lwoc_root); // will cause all world to be saved
out.close();
fileOut.close();
System.out.printf("Serialized data is saved in "+path);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void restoreWorld(String path) {
try {
FileInputStream fileIn = new FileInputStream(path);
ObjectInputStream in = new ObjectInputStream(fileIn);
lwoc_root = (LwocOctree) in.readObject();
in.close();
fileIn.close();
} catch (IOException e) {
e.printStackTrace();
return;
} catch (ClassNotFoundException c) {
System.out.println(path+" not found");
c.printStackTrace();
return;
}
}
public static void addPendingScene(LwocScene scene) {
synchronized(pendingScenes) {
pendingScenes.add(scene);
......@@ -69,10 +148,6 @@ public class LwocOctree {
}
}
// just for testing
// List<List<LwocScene>> group = new ArrayList<List<LwocScene>>(4);
/**
* Initialize Octree data and set initial world node. It is possible to grow
* world as needed later.
......@@ -83,7 +158,7 @@ public class LwocOctree {
LwocMesh.resetMeshes();
LwocScene.resetScenes();
resetPending();
LWOK_OCTREE = new ArrayList<LwocOctree>();
// LWOK_OCTREE = new ArrayList<LwocOctree>();
// Add a single leaf node
lwoc_root = new LwocOctree(null, center, world_hsize);
lwoc_root.leaf = new LwocLeaf();
......@@ -100,8 +175,6 @@ public class LwocOctree {
pendingMeshes = new ArrayList<LwocMesh>();
pendingLeafNodes = new ArrayList<LwocOctree>();
}
// use per-thread lists and then combine them avoiding synchronizations?
//Pass list to any function that may grow it
/**
* Test if it is leaf node
......@@ -140,7 +213,7 @@ public class LwocOctree {
id = OCTREE_ID.getAndIncrement();
this.parent = parent;
this.hsize = hsize;
LWOK_OCTREE.add(this);
// LWOK_OCTREE.add(this);
}
/**
......@@ -267,7 +340,6 @@ public class LwocOctree {
}
}
/**
* Recursively (if needed) splits octree nodes to reduce number of scenes/cameras
* and mesh centers below specified thresholds (limited by the minimal node size)
......@@ -276,7 +348,7 @@ public class LwocOctree {
* triggers node split.
* @param max_cameras Maximasl number of scenes (camera positions) in a node. Larger
* number triggers node split.
* @param check_existed
* @param check_existed Filter identical meshes or scenes from corresponding lists.
*/
public static void tendPendingLeafNodes(
final double min_hsize,
......@@ -312,7 +384,16 @@ public class LwocOctree {
MultiThreading.startAndJoin(threads);
}
// Split recursively until satisfied conditions
/**
* Split recursively the octree node (and its children if needed) to keep number of scenes and
* mesh centers below thresholds.
* @param min_hsize do not split nodes smaller than this (half size in each direction) even if
* it has over-threshold number of scenes and/or mesh centers.
* @param max_mesh_centers Split node if it has more mesh centers in its list.
* @param max_cameras Split node if it has more scenes (camera positions) than this.
* @param check_existed
* @return
*/
public int splitNode(
double min_hsize,
int max_mesh_centers,
......@@ -395,14 +476,9 @@ public class LwocOctree {
return num_added;
}
// not thread safe
// grow world to include xyz (all 8 corners for a bounding box of as mesh
/**
* Grow the world to include specified point Will repeat growing twice (in each direction)
* until the specified point gets inside.
* until the specified point gets inside. Not thread safe, should run in single-thread mode
* @param xyz The point to be included in the world.
*/
public static void growXYZ(double [] xyz) {
......@@ -442,6 +518,7 @@ public class LwocOctree {
lwoc_root = new_root;
}
}
/**
* Test if the specified box intersects this node
* @param xyz box center
......@@ -480,8 +557,6 @@ public class LwocOctree {
return true;
}
/**
* Test if the specified box completely fits in this node
* @param xyz box center
......@@ -513,8 +588,6 @@ public class LwocOctree {
LwocMesh mesh,
boolean check_existed
) {
// should in check before adding?
// mesh.equals(mesh);
double [] center = mesh.getCenter();
double [] dims = mesh.getDims();
// First - check that all 8 corners fit in the world
......@@ -555,7 +628,6 @@ public class LwocOctree {
return true;
}
// recursive
/**
* Recursively add mesh to all leaf nodes that intersect with its bounding box.
* Usually starts with lwoc_root.
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment