SubdivisionMesh.java

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 */package eu.mihosoft.vrl.v3d.ext.openjfx.shape3d;
 
 
 
import eu.mihosoft.vrl.v3d.ext.openjfx.shape3d.symbolic.SymbolicPolygonMesh;
import eu.mihosoft.vrl.v3d.ext.openjfx.shape3d.symbolic.SymbolicSubdivisionBuilder;
import java.util.ArrayList;
import java.util.List;
 
// TODO: Auto-generated Javadoc
public class SubdivisionMesh extends PolygonMesh {
    
    private final PolygonMesh originalMesh;
    
    private int subdivisionLevel;
    
    private BoundaryMode boundaryMode;
    
    private MapBorderMode mapBorderMode;
    
    private final List<SymbolicPolygonMesh> symbolicMeshes;
    
    private boolean pointValuesDirty;
    
    private boolean meshDirty;
    
    private boolean subdivisionLevelDirty;
    
    public enum BoundaryMode {
        
        CREASE_EDGES, 
        
        CREASE_ALL
    }
    
    public enum MapBorderMode {
        
        NOT_SMOOTH, 
        
        SMOOTH_INTERNAL, 
        
        SMOOTH_ALL
    }
    
    public SubdivisionMesh(PolygonMesh originalMesh, int subdivisionLevel, BoundaryMode boundaryMode, MapBorderMode mapBorderMode) {
        this.originalMesh = originalMesh;
        setSubdivisionLevelForced(subdivisionLevel);
        setBoundaryModeForced(boundaryMode);
        setMapBorderModeForced(mapBorderMode);
        
        symbolicMeshes = new ArrayList<>(4); // the polymesh is usually subdivided up to 3 times
 
        originalMesh.getPoints().addListener((observableArray, sizeChanged, from, to) -> {
            if (sizeChanged) {
                meshDirty = true;
            } else {
                pointValuesDirty = true;
            }
        });
        originalMesh.getTexCoords().addListener((observableArray, sizeChanged, from, to) -> meshDirty = true);
    }
    
    public void update() {
        if (meshDirty) {
            symbolicMeshes.clear();
            symbolicMeshes.add(new SymbolicPolygonMesh(originalMesh));
            pointValuesDirty = true;
            subdivisionLevelDirty = true;
        }
 
        while (subdivisionLevel >= symbolicMeshes.size()) {
            symbolicMeshes.add(SymbolicSubdivisionBuilder.subdivide(symbolicMeshes.get(symbolicMeshes.size()-1), boundaryMode, mapBorderMode));
            pointValuesDirty = true;
            subdivisionLevelDirty = true;
        }
        
        if (pointValuesDirty) {
            for (int i = 0; i <= subdivisionLevel; i++) {
                SymbolicPolygonMesh symbolicMesh = symbolicMeshes.get(i);
                symbolicMesh.points.update();
            }
        }
        
        if (pointValuesDirty || subdivisionLevelDirty) {
            getPoints().setAll(symbolicMeshes.get(subdivisionLevel).points.data);
        }
        
        if (subdivisionLevelDirty) {
            faces = symbolicMeshes.get(subdivisionLevel).faces;
            numEdgesInFaces = -1;
            getFaceSmoothingGroups().setAll(symbolicMeshes.get(subdivisionLevel).faceSmoothingGroups);
            getTexCoords().setAll(symbolicMeshes.get(subdivisionLevel).texCoords);
        }
        
        meshDirty = false;
        pointValuesDirty = false;
        subdivisionLevelDirty = false;
    }
    
    private void setSubdivisionLevelForced(int subdivisionLevel) {
        this.subdivisionLevel = subdivisionLevel;
        subdivisionLevelDirty = true;
    }
    
    private void setBoundaryModeForced(SubdivisionMesh.BoundaryMode boundaryMode) {
        this.boundaryMode = boundaryMode;
        meshDirty = true;
    }
 
    private void setMapBorderModeForced(SubdivisionMesh.MapBorderMode mapBorderMode) {
        this.mapBorderMode = mapBorderMode;
        meshDirty = true;
    }
    
    public PolygonMesh getOriginalMesh() {
        return originalMesh;
    }
    
    public int getSubdivisionLevel() {
        return subdivisionLevel;
    }
 
    public void setSubdivisionLevel(int subdivisionLevel) {
        if (subdivisionLevel != this.subdivisionLevel) {
            setSubdivisionLevelForced(subdivisionLevel);
        }
    }
    
    public SubdivisionMesh.BoundaryMode getBoundaryMode() {
        return boundaryMode;
    }
 
    public void setBoundaryMode(SubdivisionMesh.BoundaryMode boundaryMode) {
        if (boundaryMode != this.boundaryMode) {
            setBoundaryModeForced(boundaryMode);
        }
    }
 
    public SubdivisionMesh.MapBorderMode getMapBorderMode() {
        return mapBorderMode;
    }
 
    public void setMapBorderMode(SubdivisionMesh.MapBorderMode mapBorderMode) {
        if (mapBorderMode != this.mapBorderMode) {
            setMapBorderModeForced(mapBorderMode);
        }
    }
}