Introduce fuzzy iterating when finding chains; Found another bug when detecting chain collisions

This commit is contained in:
2025-05-23 02:17:25 -04:00
parent 29a0c04fae
commit 586fb04c02
3 changed files with 598 additions and 101 deletions

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@@ -0,0 +1,196 @@
package com.aaaaahhhhhhh.bananapuncher714.minietest;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.bukkit.util.Vector;
import com.aaaaahhhhhhh.bananapuncher714.mesh.Mesh;
import com.aaaaahhhhhhh.bananapuncher714.mesh.Point;
import com.aaaaahhhhhhh.bananapuncher714.mesh.Polygon;
import com.aaaaahhhhhhh.bananapuncher714.mesh.region.simple.RegionRuleWinding;
import com.aaaaahhhhhhh.bananapuncher714.mesh.region.simple.RegionSimple;
import com.aaaaahhhhhhh.bananapuncher714.mesh.region.simple.RegionSimple.GluWindingRule;
import com.aaaaahhhhhhh.bananapuncher714.minietest.MeshingTest2.AABB;
import com.aaaaahhhhhhh.bananapuncher714.minietest.objects.ChunkLocation;
import com.aaaaahhhhhhh.bananapuncher714.minietest.objects.mesh.Facet;
import com.aaaaahhhhhhh.bananapuncher714.minietest.objects.mesh.MeshBuilder;
import com.aaaaahhhhhhh.bananapuncher714.minietest.objects.mesh.Plane;
public class MeshingTest3 {
private static final File BASE = new File( System.getProperty( "user.dir" ) );
private static final File CHUNK_DIR = new File( BASE, "chunks" );
public static void main( String[] args ) {
if ( CHUNK_DIR.exists() && CHUNK_DIR.isDirectory() ) {
System.out.println( "Found " + CHUNK_DIR.list().length + " files" );
// for ( int i = 0; i < CHUNK_DIR.listFiles().length; ++i ) {
// final File file = CHUNK_DIR.listFiles()[ i ];
// System.out.println( "Meshing " + file + "\t" + ( i + 1 ) + "/" + CHUNK_DIR.listFiles().length );
// final List< Plane > planes = mesh( file );
// planes.parallelStream().forEach( p -> {
// try {
// process( p );
// } catch ( IllegalStateException e ) {
// e.printStackTrace();
//
// semiProcess( p );
//
// System.exit( 1 );
// }
// } );
// }
final List< Plane > planes = mesh( new File( CHUNK_DIR, "world,-2,1" ) );
// for ( int i = 0; i < planes.size(); ++i ) {
// System.out.println( "Meshing plane " + i );
// process( planes.get( i ) );
// }
process( planes.get( 218 ) );
} else {
System.err.println( "No such directory exists: " + CHUNK_DIR );
}
}
private static void process( final Plane plane ) {
if ( plane != null ) {
Mesh< RegionSimple > mesh = new Mesh< RegionSimple >( () -> { return new RegionSimple( GluWindingRule.ODD ); } );
for ( Polygon poly : plane.polygons ) {
mesh.addPolygon( poly, RegionRuleWinding.CLOCKWISE );
}
mesh.meshify();
} else {
System.out.println( "No data!" );
}
}
private static void semiProcess( final Plane plane ) {
}
private static List< Plane > mesh( File file ) {
String name = file.getName();
String[] split = name.split( "," );
ChunkLocation location = new ChunkLocation( split[ 0 ], Integer.parseInt( split[ 1 ] ), Integer.parseInt( split[ 2 ] ) );
System.out.println( "Parsing chunk " + location );
// First parse the file to get a list of all bounding boxes that we can use
List< AABB > boxes = new ArrayList< AABB >();
try ( BufferedReader reader = new BufferedReader( new FileReader( file ) ) ) {
String line;
while ( ( line = reader.readLine() ) != null ) {
if ( !line.isEmpty() ) {
String[] values = line.split( "," );
double minX = Double.parseDouble( values[ 0 ] );
double minY = Double.parseDouble( values[ 1 ] );
double minZ = Double.parseDouble( values[ 2 ] );
double maxX = Double.parseDouble( values[ 3 ] );
double maxY = Double.parseDouble( values[ 4 ] );
double maxZ = Double.parseDouble( values[ 5 ] );
boxes.add( new AABB( minX, minY, minZ, maxX, maxY, maxZ ) );
}
}
} catch ( FileNotFoundException e ) {
e.printStackTrace();
return null;
} catch ( IOException e ) {
e.printStackTrace();
return null;
}
System.out.println( "Found " + boxes.size() + " boxes" );
// Now that we have a bunch of bounding boxes, do whatever
MeshBuilder builder = new MeshBuilder();
for ( AABB box : boxes ) {
for ( Facet facet : generateFacetsFor( box ) ) {
builder.addFacet( facet );
}
}
return builder.planes;
}
private static List< Facet > generateFacetsFor( AABB box ) {
List< Facet > facets = new ArrayList< Facet >();
Vector p1 = new Vector( box.xmin, box.ymin, box.zmin );
Vector p2 = new Vector( box.xmin, box.ymin, box.zmax );
Vector p3 = new Vector( box.xmin, box.ymax, box.zmin );
Vector p4 = new Vector( box.xmin, box.ymax, box.zmax );
Vector p5 = new Vector( box.xmax, box.ymin, box.zmin );
Vector p6 = new Vector( box.xmax, box.ymin, box.zmax );
Vector p7 = new Vector( box.xmax, box.ymax, box.zmin );
Vector p8 = new Vector( box.xmax, box.ymax, box.zmax );
{
Facet facet = new Facet();
facet.points.add( p1 );
facet.points.add( p2 );
facet.points.add( p4 );
facet.points.add( p3 );
facet.normal = new Vector( -1, 0, 0 );
facets.add( facet );
}
{
Facet facet = new Facet();
facet.points.add( p5 );
facet.points.add( p6 );
facet.points.add( p8 );
facet.points.add( p7 );
facet.normal = new Vector( 1, 0, 0 );
facets.add( facet );
}
{
Facet facet = new Facet();
facet.points.add( p1 );
facet.points.add( p2 );
facet.points.add( p6 );
facet.points.add( p5 );
facet.normal = new Vector( 0, -1, 0 );
facets.add( facet );
}
{
Facet facet = new Facet();
facet.points.add( p3 );
facet.points.add( p4 );
facet.points.add( p8 );
facet.points.add( p7 );
facet.normal = new Vector( 0, 1, 0 );
facets.add( facet );
}
{
Facet facet = new Facet();
facet.points.add( p1 );
facet.points.add( p3 );
facet.points.add( p7 );
facet.points.add( p5 );
facet.normal = new Vector( 0, 0, -1 );
facets.add( facet );
}
{
Facet facet = new Facet();
facet.points.add( p2 );
facet.points.add( p4 );
facet.points.add( p8 );
facet.points.add( p6 );
facet.normal = new Vector( 0, 0, 1 );
facets.add( facet );
}
return facets;
}
}