/**
* Loads a PolygonRegion from a PSH (Polygon SHape) file. The PSH file format defines the polygon
* vertices before triangulation:
*
* <p>s 200.0, 100.0, ...
*
* <p>Lines not prefixed with "s" are ignored. PSH files can be created with external tools, eg:
* <br>
* https://code.google.com/p/libgdx-polygoneditor/ <br>
* http://www.codeandweb.com/physicseditor/
*
* @param file file handle to the shape definition file
*/
public PolygonRegion load(TextureRegion textureRegion, FileHandle file) {
BufferedReader reader = file.reader(256);
try {
while (true) {
String line = reader.readLine();
if (line == null) break;
if (line.startsWith("s")) {
// Read shape.
String[] polygonStrings = line.substring(1).trim().split(",");
float[] vertices = new float[polygonStrings.length];
for (int i = 0, n = vertices.length; i < n; i++)
vertices[i] = Float.parseFloat(polygonStrings[i]);
// It would probably be better if PSH stored the vertices and triangles, then we don't
// have to triangulate here.
return new PolygonRegion(
textureRegion, vertices, triangulator.computeTriangles(vertices).toArray());
}
}
} catch (IOException ex) {
throw new GdxRuntimeException("Error reading polygon shape file: " + file, ex);
} finally {
StreamUtils.closeQuietly(reader);
}
throw new GdxRuntimeException("Polygon shape not found: " + file);
}
@Override
public LuaValue load(
AssetManager assetManager, String fileName, FileHandle file, LuaFileParameter parameter) {
Globals globals = parameter.mGlobals;
LuaValue environment = parameter.mEnvironment;
InputStream scriptStream = file.read();
try {
return globals.load(scriptStream, fileName, "t", environment).call();
} finally {
StreamUtils.closeQuietly(scriptStream);
}
}
public Sound(OpenALAudio audio, FileHandle file) {
super(audio);
if (audio.noDevice) return;
WavInputStream input = null;
try {
input = new WavInputStream(file);
setup(
StreamUtils.copyStreamToByteArray(input, input.dataRemaining),
input.channels,
input.sampleRate);
} catch (IOException ex) {
throw new GdxRuntimeException("Error reading WAV file: " + file, ex);
} finally {
StreamUtils.closeQuietly(input);
}
}
@Override
public String getResultAsString() {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
try {
int approxStringLength = connection.getContentLength();
StringBuilder b;
if (approxStringLength > 0) b = new StringBuilder(approxStringLength);
else b = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) b.append(line);
return b.toString();
} catch (IOException e) {
return "";
} finally {
StreamUtils.closeQuietly(reader);
}
}
WavInputStream(FileHandle file) {
super(file.read());
try {
if (read() != 'R' || read() != 'I' || read() != 'F' || read() != 'F')
throw new GdxRuntimeException("RIFF header not found: " + file);
skipFully(4);
if (read() != 'W' || read() != 'A' || read() != 'V' || read() != 'E')
throw new GdxRuntimeException("Invalid wave file header: " + file);
int fmtChunkLength = seekToChunk('f', 'm', 't', ' ');
int type = read() & 0xff | (read() & 0xff) << 8;
if (type != 1) throw new GdxRuntimeException("WAV files must be PCM: " + type);
channels = read() & 0xff | (read() & 0xff) << 8;
if (channels != 1 && channels != 2)
throw new GdxRuntimeException("WAV files must have 1 or 2 channels: " + channels);
sampleRate =
read() & 0xff | (read() & 0xff) << 8 | (read() & 0xff) << 16 | (read() & 0xff) << 24;
skipFully(6);
int bitsPerSample = read() & 0xff | (read() & 0xff) << 8;
if (bitsPerSample != 16)
throw new GdxRuntimeException("WAV files must have 16 bits per sample: " + bitsPerSample);
skipFully(fmtChunkLength - 16);
dataRemaining = seekToChunk('d', 'a', 't', 'a');
} catch (Throwable ex) {
StreamUtils.closeQuietly(this);
throw new GdxRuntimeException("Error reading WAV file: " + file, ex);
}
}
public void reset() {
StreamUtils.closeQuietly(input);
input = null;
}