/**
* Simple algorithm to add or remove an edge from the selection Ideas: 1. Use one shape per quad
* => easy, but can become very fast too big to fit in memory. => pb: flicker when adding /
* removing because the scene is detached 2. Use only one shape, modify geometry TODO: pre-create
* an empty shape to avoid initial flicker
*
* @param on
* @param p
* @param u
* @param v
* @param groupIdx2
*/
protected void toggleSelectedEdge(boolean on, SelectionEdge se) {
if (on) {
// add the given edge to the list
if (edgeSelection.contains(se)) return; // already in
edgeSelection.add(se);
} else {
// remove the given edge from the list
if (!edgeSelection.contains(se)) return; // not present
edgeSelection.remove(se);
if (edgeSelection.size() == 0) {
LineArray la = (LineArray) edgeSelectionShape.getGeometry();
la.setValidVertexCount(0);
return;
}
}
// Use in-memory arrays instead of NIO because edgeSelection should not
// be too big
// => faster
LineArray la =
new LineArray(
edgeSelection.size() * 2,
GeometryArray.COORDINATES | GeometryArray.COLOR_3 | GeometryArray.BY_REFERENCE);
double[] coords = new double[edgeSelection.size() * 2 * 3];
float[] colors = new float[edgeSelection.size() * 2 * 3];
for (int i = 0; i < coords.length; i += 6) {
SelectionEdge edge = edgeSelection.get(i / 6);
edge.updateCoords(grid, coords, i);
edge.updateColors(colors, i);
}
la.setCoordRefDouble(coords);
la.setColorRefFloat(colors);
la.setCapability(GeometryArray.ALLOW_COUNT_WRITE);
// update edgeSelection Shape with the new edgeSelection list
if (edgeSelectionShape == null) {
Appearance a = new Appearance();
// PolygonAttributes pa = new
// PolygonAttributes(PolygonAttributes.POLYGON_LINE,
// PolygonAttributes.CULL_NONE, 0);
// pa.setPolygonOffset(1); // above edges
// pa.setPolygonOffsetFactor(1);
LineAttributes lat = new LineAttributes();
lat.setLineWidth(2.0f);
lat.setLineAntialiasingEnable(true);
a.setLineAttributes(lat);
// a.setPolygonAttributes(pa);
edgeSelectionShape = new Shape3D(la, a);
edgeSelectionShape.setUserData(this);
edgeSelectionShape.setPickable(false);
edgeSelectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
edgeSelectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
BranchGroup bg = new BranchGroup();
bg.addChild(edgeSelectionShape);
addChild(bg);
} else edgeSelectionShape.setGeometry(la);
}
/**
* Simple algorithm to add or remove a quad from the selection Ideas: 1. Use one shape per quad =>
* easy, but can become very fast too big to fit in memory. => pb: flicker when adding / removing
* because the scene is detached 2. Use only one shape, modify geometry TODO: pre-create an empty
* shape to avoid initial flicker
*
* @param on
* @param p
* @param u
* @param v
* @param groupIdx2
*/
protected void toggleSelectedQuad(boolean on, SelectionQuad sq) {
LOGGER.finest("on=" + on + " selectionQuad=" + sq);
if (on) {
// add the given quad to the list
if (selection.contains(sq)) return; // already in
selection.add(sq);
} else {
// remove the given quad from the list
if (!selection.contains(sq)) return; // not present
selection.remove(sq);
if (selection.size() == 0) {
QuadArray qa = (QuadArray) selectionShape.getGeometry();
qa.setValidVertexCount(0);
return;
}
}
// Use in-memory arrays instead of NIO because selection should not be
// too big
// => faster
QuadArray qa =
new QuadArray(
selection.size() * 4,
GeometryArray.COORDINATES | GeometryArray.COLOR_3 | GeometryArray.BY_REFERENCE);
float[] coords = new float[selection.size() * 4 * 3];
float[] colors = new float[selection.size() * 4 * 3];
for (int i = 0; i < coords.length; i += 12) {
SelectionQuad quad = selection.get(i / 12);
quad.updateCoords(grid, coords, i);
quad.updateColors(colors, i);
}
qa.setCoordRefFloat(coords);
qa.setColorRefFloat(colors);
qa.setCapability(GeometryArray.ALLOW_COUNT_WRITE);
// update selection Shape with the new selection list
if (selectionShape == null) {
Appearance a = new Appearance();
PolygonAttributes pa =
new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0);
pa.setPolygonOffset(0.5f); // between faces and edges
pa.setPolygonOffsetFactor(0.5f);
a.setPolygonAttributes(pa);
selectionShape = new Shape3D(qa, a);
selectionShape.setUserData(this);
selectionShape.setPickable(false);
selectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
selectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
BranchGroup bg = new BranchGroup();
bg.addChild(selectionShape);
addChild(bg);
} else selectionShape.setGeometry(qa);
}
protected Shape3D createPointShape(Java3DParticlesGeometry pointShape) {
int pointSize = 3;
Appearance app = new Appearance();
app.setCapability(app.ALLOW_POINT_ATTRIBUTES_READ);
app.setCapability(app.ALLOW_POINT_ATTRIBUTES_WRITE);
PointAttributes pattrib = new PointAttributes();
pattrib.setPointSize(pointSize);
app.setPointAttributes(pattrib);
Shape3D pShape = new Shape3D(pointShape, app);
pShape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
pShape.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
return pShape;
}
public BranchGroup addTriangle(Simplex simplex, Color3f color) {
int[] p = simplex.getPoints();
BranchGroup bgTriangle = new BranchGroup();
bgTriangle.setCapability(BranchGroup.ALLOW_DETACH);
javax.vecmath.Point3d[] coords = new javax.vecmath.Point3d[6];
TriangleArray ta = new TriangleArray(6, TriangleArray.COORDINATES | TriangleArray.COLOR_3);
Point3d p0 = (Point3d) complex.getPoints().get(simplex.getPoints()[0]);
Point3d p1 = (Point3d) complex.getPoints().get(simplex.getPoints()[1]);
Point3d p2 = (Point3d) complex.getPoints().get(simplex.getPoints()[2]);
coords[0] = new javax.vecmath.Point3d(p0.getX(), p0.getY(), p0.getZ());
coords[1] = new javax.vecmath.Point3d(p1.getX(), p1.getY(), p1.getZ());
coords[2] = new javax.vecmath.Point3d(p2.getX(), p2.getY(), p2.getZ());
coords[3] = new javax.vecmath.Point3d(p0.getX(), p0.getY(), p0.getZ());
coords[4] = new javax.vecmath.Point3d(p2.getX(), p2.getY(), p2.getZ());
coords[5] = new javax.vecmath.Point3d(p1.getX(), p1.getY(), p1.getZ());
ta.setCoordinates(0, coords);
Color3f[] colors = new Color3f[6];
for (int i = 0; i < 3; i++) colors[i] = Colors.black;
for (int i = 3; i < 6; i++) colors[i] = Colors.yellow;
ta.setColors(0, colors);
Appearance ap = new Appearance();
ap.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_READ);
ap.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_WRITE);
ap.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_READ);
ap.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_WRITE);
ap.setLineAttributes(new LineAttributes(2, LineAttributes.PATTERN_SOLID, false));
ap.setMaterial(new Material());
ap.setTransparencyAttributes(
new TransparencyAttributes(TransparencyAttributes.SCREEN_DOOR, 0.5f));
Shape3D shape = new Shape3D(ta, ap);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
simplex.setTriangle(shape);
// simplex.bgTriangle = bgTriangle;
TransformGroup tgTriangle = new TransformGroup();
tgTriangle.addChild(shape);
bgTriangle.addChild(tgTriangle);
spin.addChild(bgTriangle);
return bgTriangle;
}
protected void makeWires() {
Wire[] wires = createWireList();
if (wires.length == 0) return;
FloatBuffer nioWires =
ByteBuffer.allocateDirect(wires.length * 2 * 3 * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
for (int i = 0; i < wires.length; i++) {
nioWires.put(wires[i].getCoordinates(grid));
}
// Create edge shapes directly, don't make it appear in graph
LineArray la =
new NioLineArray(wires.length * 2, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
la.setCoordRefBuffer(new J3DBuffer(nioWires));
int colSize = wires.length * 2 * 3;
FloatBuffer nioWireColors =
ByteBuffer.allocateDirect(colSize * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
float[] colors = getColorForOrder(-2, 0);
for (int i = 0; i < colSize; i += 3) nioWireColors.put(colors);
la.setColorRefBuffer(new J3DBuffer(nioWireColors));
la.setUserData(new int[] {-2, 0});
Appearance a = new Appearance();
// PolygonAttributes pa = new
// PolygonAttributes(PolygonAttributes.POLYGON_LINE,
// PolygonAttributes.CULL_NONE, 0);
// pa.setPolygonOffset(2);
// pa.setPolygonOffsetFactor(2);
// a.setPolygonAttributes(pa);
/*
* LineAttributes lat = new LineAttributes(); lat.setLineWidth(2.0f);
* a.setLineAttributes(lat);
*/
Shape3D s3d = new Shape3D(la, a);
PickTool.setCapabilities(s3d, PickTool.INTERSECT_FULL);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
s3d.setCapability(Node.ALLOW_PICKABLE_READ);
s3d.setCapability(Node.ALLOW_PICKABLE_WRITE);
s3d.setPickable(true); // by default, can be changed with actions
s3d.setUserData(this); // this object will handle edges
addChild(s3d);
allEdgeShapes.add(s3d);
}
private BranchGroup setApperancePackInBranchGroup(Shape3D shape, Node handle) {
shape.setUserData(this);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
BranchGroup bg = new BranchGroup();
bg.setCapability(BranchGroup.ALLOW_DETACH);
bg.addChild(handle);
bg.compile();
return bg;
}
public static void initShape(Shape3D shape) {
shape.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_OVERRIDE_READ);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_OVERRIDE_WRITE);
shape.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
shape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
}
protected void makeGroups() {
int totalQuads = 0;
int totalInternalEdges = 0;
int totalExternalEdges = 0;
// loop over each group
// loop over each group
int[] groupID = provider.getDomainIDs();
for (int g = 0; g < groupID.length; ++g) {
LOGGER.finest("generating java3d tree for group number " + groupID[g]);
// Set of EdgeLine objects. Overlapping edges on the same line are
// merged together
HashMap<EdgeLine, EdgeLine> externalEdges = new HashMap<EdgeLine, EdgeLine>();
// Same trick for internal edges.
HashMap<EdgeLine, EdgeLine> internalEdges = new HashMap<EdgeLine, EdgeLine>();
FDDomain fdDomain = (FDDomain) provider.getDomain(groupID[g]);
baseColor.put(new Integer(g), fdDomain.getColor());
Plate[] plates = domainToPlates(fdDomain);
if (plates.length == 0) continue;
// Create plates for this group
FloatBuffer nioCoords =
ByteBuffer.allocateDirect(plates.length * 4 * 3 * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
FloatBuffer nioColors =
ByteBuffer.allocateDirect(plates.length * 4 * 3 * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
float[] baseColor = getColorForOrder(g, 0);
// System.out.println(baseColor[0]+" "+baseColor[1]+" "+baseColor[2]);
for (int np = 0; np < plates.length; ++np) {
Plate p = plates[np];
// put coordinates
nioCoords.put(p.getCoordinates(grid));
// put colors for the 4 vertices
nioColors.put(baseColor);
nioColors.put(baseColor);
nioColors.put(baseColor);
nioColors.put(baseColor);
// Merge external edges
addEdge(externalEdges, getLine(p, 2, p.min1), p.min2, p.max2);
addEdge(externalEdges, getLine(p, 2, p.max1), p.min2, p.max2);
addEdge(externalEdges, getLine(p, 1, p.min2), p.min1, p.max1);
addEdge(externalEdges, getLine(p, 1, p.max2), p.min1, p.max1);
// Merge internal edges
for (int i = p.min1 + 1; i < p.max1; ++i)
addEdge(internalEdges, getLine(p, 2, i), p.min2, p.max2);
for (int j = p.min2 + 1; j < p.max2; ++j)
addEdge(internalEdges, getLine(p, 1, j), p.min1, p.max1);
}
// use by reference array of colors => fast to change!
QuadArray qa =
new NioQuadArray(plates.length * 4, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
qa.setCoordRefBuffer(new J3DBuffer(nioCoords));
qa.setColorRefBuffer(new J3DBuffer(nioColors));
qa.setCapability(GeometryArray.ALLOW_COLOR_WRITE);
qa.setCapabilityIsFrequent(GeometryArray.ALLOW_COLOR_WRITE);
Appearance a = new Appearance();
PolygonAttributes pa =
new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0);
pa.setPolygonOffset(1);
pa.setPolygonOffsetFactor(1);
a.setPolygonAttributes(pa);
Shape3D s3d = new Shape3D(qa, a);
PickTool.setCapabilities(s3d, PickTool.INTERSECT_FULL);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
s3d.setCapability(Node.ALLOW_PICKABLE_READ);
s3d.setCapability(Node.ALLOW_PICKABLE_WRITE);
s3d.setPickable(true);
s3d.setUserData(new BehindShape(s3d, plates, g));
this.addChild(s3d);
// Create edge shapes directly, don't make them appear in graph
int nInternalEdges = 0;
for (Iterator<EdgeLine> it = internalEdges.keySet().iterator(); it.hasNext(); ) {
EdgeLine el = it.next();
nInternalEdges += el.getNumberOfEdges();
}
if (nInternalEdges > 0) {
DoubleBuffer nioInternalEdges =
ByteBuffer.allocateDirect(nInternalEdges * 2 * 3 * 8)
.order(ByteOrder.nativeOrder())
.asDoubleBuffer();
// create edge coords
for (Iterator<EdgeLine> it = internalEdges.keySet().iterator(); it.hasNext(); ) {
EdgeLine el = it.next();
nioInternalEdges.put(el.getCoords(grid));
}
LineArray la =
new NioLineArray(nInternalEdges * 2, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
la.setCoordRefBuffer(new J3DBuffer(nioInternalEdges));
int colSize = nInternalEdges * 2 * 3;
FloatBuffer nioInternalColors =
ByteBuffer.allocateDirect(colSize * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
float[] colors = getColorForOrder(g, 2);
for (int i = 0; i < colSize; i += 3) nioInternalColors.put(colors);
la.setColorRefBuffer(new J3DBuffer(nioInternalColors));
la.setUserData(new int[] {g, 2});
a = new Appearance();
// pa = new PolygonAttributes(PolygonAttributes.POLYGON_LINE,
// PolygonAttributes.CULL_NONE, 0);
// pa.setPolygonOffset(4);
// pa.setPolygonOffsetFactor(4);
// a.setPolygonAttributes(pa);
// LineAttributes lat = new LineAttributes();
// lat.setLineAntialiasingEnable(true);
// a.setLineAttributes(lat);
// RenderingAttributes ra = new RenderingAttributes();
// ra.setAlphaTestFunction(RenderingAttributes.GREATER);
// ra.setAlphaTestValue(0.5f);
// a.setRenderingAttributes(ra);
s3d = new Shape3D(la, a);
PickTool.setCapabilities(s3d, PickTool.INTERSECT_FULL);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
s3d.setCapability(Node.ALLOW_PICKABLE_READ);
s3d.setCapability(Node.ALLOW_PICKABLE_WRITE);
s3d.setPickable(false); // by default, see actions
s3d.setUserData(this); // this object will handle edges
this.addChild(s3d);
allEdgeShapes.add(s3d);
}
// Now, create external edge
int nExternalEdges = 0;
for (Iterator<EdgeLine> it = externalEdges.keySet().iterator(); it.hasNext(); ) {
EdgeLine el = it.next();
nExternalEdges += el.getNumberOfEdges();
}
if (nExternalEdges > 0) {
DoubleBuffer nioExternalEdges =
ByteBuffer.allocateDirect(nExternalEdges * 2 * 3 * 8)
.order(ByteOrder.nativeOrder())
.asDoubleBuffer();
// create edge coords
for (Iterator<EdgeLine> it = externalEdges.keySet().iterator(); it.hasNext(); ) {
EdgeLine el = it.next();
nioExternalEdges.put(el.getCoords(grid));
}
LineArray la =
new NioLineArray(nExternalEdges * 2, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
la.setCoordRefBuffer(new J3DBuffer(nioExternalEdges));
int colSize = nExternalEdges * 2 * 3;
FloatBuffer nioExternalColors =
ByteBuffer.allocateDirect(colSize * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
float[] colors = getColorForOrder(g, 4);
for (int i = 0; i < colSize; i += 3) nioExternalColors.put(colors);
la.setColorRefBuffer(new J3DBuffer(nioExternalColors));
la.setUserData(new int[] {g, 4});
a = new Appearance();
// pa = new PolygonAttributes(PolygonAttributes.POLYGON_LINE,
// PolygonAttributes.CULL_NONE, 0);
// pa.setPolygonOffset(3);
// pa.setPolygonOffsetFactor(3);
// a.setPolygonAttributes(pa);
s3d = new Shape3D(la, a);
PickTool.setCapabilities(s3d, PickTool.INTERSECT_FULL);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
s3d.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
s3d.setCapability(Node.ALLOW_PICKABLE_READ);
s3d.setCapability(Node.ALLOW_PICKABLE_WRITE);
s3d.setPickable(false); // by default, see actions
s3d.setUserData(this); // this object will handle edges
this.addChild(s3d);
allEdgeShapes.add(s3d);
}
totalQuads += plates.length;
totalInternalEdges += nInternalEdges;
totalExternalEdges += nExternalEdges;
}
System.out.println("Total quads: " + totalQuads);
System.out.println("Total Internal Plate edges: " + totalInternalEdges);
System.out.println("Total External Plate edges: " + totalExternalEdges);
}
public BranchGroup addTetrahedron(Simplex simplex, Color3f color) {
BranchGroup bgTetrahedron = new BranchGroup();
bgTetrahedron.setCapability(BranchGroup.ALLOW_DETACH);
javax.vecmath.Point3d[] coords = new javax.vecmath.Point3d[12];
LineArray la = new LineArray(12, LineArray.COORDINATES | LineArray.COLOR_3);
Point3d p0 = (Point3d) complex.getPoints().get(simplex.getPoints()[0]);
Point3d p1 = (Point3d) complex.getPoints().get(simplex.getPoints()[1]);
Point3d p2 = (Point3d) complex.getPoints().get(simplex.getPoints()[2]);
Point3d p3 = (Point3d) complex.getPoints().get(simplex.getPoints()[3]);
coords[0] = coords[2] = coords[4] = new javax.vecmath.Point3d(p0.getX(), p0.getY(), p0.getZ());
coords[1] = coords[6] = coords[8] = new javax.vecmath.Point3d(p1.getX(), p1.getY(), p1.getZ());
coords[3] = coords[7] = coords[10] = new javax.vecmath.Point3d(p2.getX(), p2.getY(), p2.getZ());
coords[5] = coords[9] = coords[11] = new javax.vecmath.Point3d(p3.getX(), p3.getY(), p3.getZ());
la.setCoordinates(0, coords);
Color3f[] colors = new Color3f[12];
for (int i = 0; i < 12; i++) colors[i] = Colors.black;
la.setColors(0, colors);
javax.vecmath.Point3d[] coordsTr = new javax.vecmath.Point3d[24];
TriangleArray tr = new TriangleArray(24, TriangleArray.COORDINATES | TriangleArray.COLOR_3);
coordsTr[0] =
coordsTr[3] = coordsTr[6] = new javax.vecmath.Point3d(p0.getX(), p0.getY(), p0.getZ());
coordsTr[1] =
coordsTr[4] = coordsTr[9] = new javax.vecmath.Point3d(p1.getX(), p1.getY(), p1.getZ());
coordsTr[2] =
coordsTr[7] = coordsTr[10] = new javax.vecmath.Point3d(p2.getX(), p2.getY(), p2.getZ());
coordsTr[5] =
coordsTr[8] = coordsTr[11] = new javax.vecmath.Point3d(p3.getX(), p3.getY(), p3.getZ());
coordsTr[12] =
coordsTr[15] = coordsTr[18] = new javax.vecmath.Point3d(p0.getX(), p0.getY(), p0.getZ());
coordsTr[14] =
coordsTr[17] = coordsTr[21] = new javax.vecmath.Point3d(p1.getX(), p1.getY(), p1.getZ());
coordsTr[13] =
coordsTr[20] = coordsTr[23] = new javax.vecmath.Point3d(p2.getX(), p2.getY(), p2.getZ());
coordsTr[16] =
coordsTr[19] = coordsTr[22] = new javax.vecmath.Point3d(p3.getX(), p3.getY(), p3.getZ());
tr.setCoordinates(0, coordsTr);
Color3f[] colorsTr = new Color3f[24];
for (int i = 0; i < 24; i++) colorsTr[i] = Colors.green;
tr.setColors(0, colorsTr);
Appearance ap = new Appearance();
ap.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_READ);
ap.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_WRITE);
ap.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_READ);
ap.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_WRITE);
// ap.setCapability(Appearance.ALLOW_MATERIAL_READ);
// ap.setCapability(Appearance.ALLOW_MATERIAL_WRITE);
ap.setLineAttributes(new LineAttributes(2, LineAttributes.PATTERN_SOLID, false));
ap.setMaterial(new Material());
// ap.setTransparencyAttributes(new
// TransparencyAttributes(TransparencyAttributes.SCREEN_DOOR, 0.5f));
// LineArray la = cell.getLineArray();
Shape3D shape = new Shape3D(la, ap);
Shape3D shapeTr = new Shape3D(tr, ap);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
simplex.setTetrahedron(shape);
// cell.setLineArray(la);
simplex.setTriangleArray(tr);
simplex.setBgTetrahedron(bgTetrahedron);
TransformGroup tgTetrahedron = new TransformGroup();
tgTetrahedron.addChild(shape);
tgTetrahedron.addChild(shapeTr);
bgTetrahedron.addChild(tgTetrahedron);
spin.addChild(bgTetrahedron);
return bgTetrahedron;
}
public static Mesh readMeshFromObj(String path) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(path));
String mtlLibPath = "";
String materialName = "";
ArrayList<Vector3d> vertices = new ArrayList<Vector3d>();
ArrayList<Point3f> points = new ArrayList<Point3f>();
ArrayList<Triangle> triangles = new ArrayList<Triangle>();
ArrayList<Integer> coordIndices = new ArrayList<Integer>();
while (true) {
String line = reader.readLine();
if (line == null) {
reader.close();
break;
}
if (line.startsWith("mtllib ")) { // mtllib location
mtlLibPath = path.substring(0, path.lastIndexOf(File.separator) + 1) + line.substring(7);
} else if (line.startsWith("v ")) { // vertex
double[] coords = parseDoubles(line.substring(2));
Vector3d vertex = new Vector3d(coords);
Point3f point = new Point3f(vertex);
vertices.add(vertex);
points.add(point);
} else if (line.startsWith("usemtl ")) {
materialName = line.substring(7);
} else if (line.startsWith("f ")) { // face (triangle)
line = line.substring(2);
String[] coords = line.split(" ");
Vector<Integer> triangle = new Vector<Integer>();
for (String coord : coords) {
String[] coordInfos = coord.split("/");
Integer coordIndex = Integer.parseInt(coordInfos[0]) - 1;
triangle.add(coordIndex);
coordIndices.add(coordIndex);
}
triangles.add(new Triangle(triangle.get(0), triangle.get(1), triangle.get(2)));
}
}
int[] coordinateIndices = new int[coordIndices.size()];
for (int j = 0; j < coordinateIndices.length; j++) {
coordinateIndices[j] = coordIndices.get(j);
}
IndexedTriangleArray geometry =
new IndexedTriangleArray(
vertices.size(), IndexedTriangleArray.COORDINATES, coordIndices.size());
geometry.setCoordinates(0, points.toArray(new Point3f[0]));
geometry.setCoordinateIndices(0, coordinateIndices);
GeometryInfo geometryInfo = new GeometryInfo(geometry);
NormalGenerator normalGenerator = new NormalGenerator((float) Math.toRadians(10));
normalGenerator.generateNormals(geometryInfo);
// Material
reader = new BufferedReader(new FileReader(new File(mtlLibPath)));
// Default
Color3f ambientColour = new Color3f(0.2f, 0.2f, 0.2f);
Color3f diffuseColour = new Color3f(0.8f, 0.8f, 0.8f);
Color3f specularColour = new Color3f(0.5f, 0.5f, 0.5f);
Color3f emissiveColour = new Color3f(0.0f, 0.0f, 0.0f);
float shininess = 50.0f;
String currentMaterial = "";
while (true) {
String line = reader.readLine();
if (line == null) {
reader.close();
break;
}
if (line.startsWith("newmtl ")) {
currentMaterial = line.substring(7);
} else if (currentMaterial.equals(materialName)) {
if (line.startsWith("Ka ")) {
// ambient color
ambientColour = new Color3f(parseFloats(line.substring(3)));
} else if (line.startsWith("Kd ")) {
// diffuse color
diffuseColour = new Color3f(parseFloats(line.substring(3)));
} else if (line.startsWith("Ks ")) {
// specular color
specularColour = new Color3f(parseFloats(line.substring(3)));
} else if (line.startsWith("Ns ")) {
// specular coefficient
shininess = Float.parseFloat(line.substring(3));
}
}
}
Appearance app = new Appearance();
app.setMaterial(
new Material(ambientColour, emissiveColour, diffuseColour, specularColour, shininess));
Shape3D shape = new Shape3D(geometryInfo.getGeometryArray(), app);
shape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
Mesh mesh =
new Mesh(
vertices.toArray(new Vector3d[0]),
triangles.toArray(new Triangle[0]),
ambientColour,
diffuseColour,
specularColour,
emissiveColour,
shininess,
shape);
return mesh;
}
