// Loads polygons into the scene from the saveFile
private static void openPolygons() {
if (saveFile.exists()) {
polygons.clear();
try {
Scanner fileIn = new Scanner(new FileReader(saveFile));
do {
if (!fileIn.hasNextLine()) {
break;
}
String name = fileIn.nextLine();
int size = Integer.valueOf(fileIn.nextLine());
Polygon p = new Polygon(name);
for (int i = 0; i < size; i++) {
String line = fileIn.nextLine();
String[] pointParts = line.split(",");
float x = Float.valueOf(pointParts[0]);
float y = Float.valueOf(pointParts[1]);
float z = Float.valueOf(pointParts[2]);
p.addPoint(new Point3Df(x, y, z));
}
size = Integer.valueOf(fileIn.nextLine());
for (int i = 0; i < size; i++) {
String line = fileIn.nextLine();
String[] edgeParts = line.split(",");
int p1 = Integer.valueOf(edgeParts[0]);
int p2 = Integer.valueOf(edgeParts[1]);
p.addEdge(new Edge(p1, p2));
}
polygons.add(p);
} while (true);
rebound();
fileIn.close();
} catch (FileNotFoundException ex) {
// Can't find file
}
} else {
// File doesn't exist
}
}
// Writes polygons to the saveFile
private static void savePolygons() {
if (!saveFile.exists()) {
try {
saveFile.createNewFile();
} catch (IOException ex) {
// Can't create file
}
}
try {
PrintStream fileOut = new PrintStream(saveFile);
for (Polygon p : polygons) {
fileOut.println(p.getName());
fileOut.println(p.getPoints().size());
for (Point3Df q : p.getPoints()) {
fileOut.print(q.x);
fileOut.print(",");
fileOut.print(q.y);
fileOut.print(",");
fileOut.println(q.z);
}
fileOut.println(p.getEdges().size());
for (Edge q : p.getEdges()) {
fileOut.print(q.p1);
fileOut.print(",");
fileOut.println(q.p2);
}
}
fileOut.close();
} catch (FileNotFoundException ex) {
// Can't find file
}
}
private static void rebound() {
float f = 0.0f;
float n = 0.0f;
float b = 0.0f;
float t = 0.0f;
float l = 0.0f;
float r = 0.0f;
for (Polygon poly : polygons) {
poly.recalc();
if (poly.getMinZ() < f) {
f = poly.getMinZ();
}
if (poly.getMaxZ() > n) {
n = poly.getMaxZ();
}
if (poly.getMinY() < b) {
b = poly.getMinY();
}
if (poly.getMaxY() > t) {
t = poly.getMaxY();
}
if (poly.getMinX() < l) {
l = poly.getMinX();
}
if (poly.getMaxX() > r) {
r = poly.getMaxX();
}
}
float maxSpan = Math.max(Math.max(f - n, t - b), r - l);
for (Polygon poly : polygons) {
for (Point3Df p : poly.getPoints()) {
p.x = p.x * (2 / maxSpan) - (r + l) / (r - l);
p.y = p.y * (2 / maxSpan) - (t + b) / (t - b);
p.z = p.z * (2 / maxSpan) - (n + f) / (n - f);
}
poly.recalc();
}
}
// Loads polygon from Ply file
// @ref http://people.sc.fsu.edu/~jburkardt/data/ply/ply.html
// @todo Check for Ply file type ascii/binary
// @todo Check for datatypes as per spec
private static void importPly(File ply) {
if (ply.exists()) {
try {
Scanner fileIn = new Scanner(new FileReader(ply));
int vertexSize = 0;
int faceSize = 0;
do {
if (!fileIn.hasNextLine()) {
break;
} else {
String line = fileIn.nextLine();
String[] lineParts = line.split("\\s+");
if (lineParts[0].equals("element")) {
if (lineParts[1].equals("vertex")) {
vertexSize = Integer.valueOf(lineParts[2]);
} else if (lineParts[1].equals("face")) {
faceSize = Integer.valueOf(lineParts[2]);
}
} else if (lineParts[0].equals("end_header")) {
break;
}
}
} while (true);
Polygon p = new Polygon(ply.getName());
for (int i = 0; i < vertexSize; i++) {
String line = fileIn.nextLine();
String[] pointParts = line.split("\\s+");
float x = Float.valueOf(pointParts[0]);
float y = Float.valueOf(pointParts[1]);
float z = Float.valueOf(pointParts[2]);
p.addPoint(new Point3Df(x, y, z));
}
for (int i = 0; i < faceSize; i++) {
String line = fileIn.nextLine();
String[] edgeParts = line.split("\\s+");
int edgeComp = Integer.valueOf(edgeParts[0]);
for (int j = 0; j < edgeComp - 1; j++) {
int p1 = Integer.valueOf(edgeParts[j + 1]);
int p2 = Integer.valueOf(edgeParts[j + 2]);
p.addEdge(new Edge(p1, p2));
}
}
polygons.add(p);
rebound();
fileIn.close();
} catch (FileNotFoundException ex) {
// Can't find file
}
} else {
// File doesn't exist
}
}