How to use

setImageParams

method

in

it.geosolutions.jaiext.jiffle.Jiffle

private void createRuntimeInstances() {
  try {
    Jiffle jiffle = new Jiffle();
    Map<String, Jiffle.ImageRole> imageParams = new HashMap<>();
    imageParams.put(WORLD_NAME, Jiffle.ImageRole.SOURCE);
    imageParams.put(NEXT_WORLD_NAME, Jiffle.ImageRole.DEST);
    
    // First create a runtime for the toroidal world
    URL url = getClass().getResource("life-toroid.jfl");
    File file = new File(url.toURI());
    jiffle.setScript(file);
    jiffle.setImageParams(imageParams);
    jiffle.compile();
    toroidRuntime = jiffle.getRuntimeInstance();
    // Now create a second runtime for the hard-edged world
    url = getClass().getResource("life-edges.jfl");
    file = new File(url.toURI());
    jiffle.setScript(file);
    jiffle.setImageParams(imageParams);
    jiffle.compile();
    edgeRuntime = jiffle.getRuntimeInstance();
    // Set the active runtime
    activeRuntime = worldType == WorldType.EDGES ? edgeRuntime : toroidRuntime;
    
  } catch (Exception ex) {
    throw new RuntimeException(ex);
  }
}

@Test(expected=UnsupportedOperationException.class)
public void tryToModifyImageParams() {
  System.out.println("   trying to modify map returned by getImageParams");
  
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  jiffle.setImageParams(imageParams);
  
  Map<String, Jiffle.ImageRole> unmodifiableMap = jiffle.getImageParams();
  
  // this should provoke an exception
  unmodifiableMap.clear();
}

@Test(expected=JiffleException.class)
public void compileWithNoScript() throws Exception {
  System.out.println("   compile with no script set");
  
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  jiffle.setImageParams(imageParams);
  jiffle.compile();
}

/**
 * Creates a new instance by compiling the script read from {@code scriptFile}. 
 * Using this constructor is equivalent to:
 * <pre><code>
 * Jiffle jiffle = new Jiffle();
 * jiffle.setScript(scriptFile);
 * jiffle.setImageParams(params);
 * jiffle.compile();
 * </code></pre>
 * 
 * @param scriptFile file containing the Jiffle script
 * 
 * @param params defines the names and roles of image variables
 *        referred to in the script.
 * 
 * @throws JiffleException on compilation errors
 */
public Jiffle(File scriptFile, Map<String, Jiffle.ImageRole> params)
    throws it.geosolutions.jaiext.jiffle.JiffleException {
  init();
  setScript(scriptFile);
  setImageParams(params);
  compile();
}

/**
 * Creates a new instance by compiling the script read from {@code scriptFile}. 
 * Using this constructor is equivalent to:
 * <pre><code>
 * Jiffle jiffle = new Jiffle();
 * jiffle.setScript(scriptFile);
 * jiffle.setImageParams(params);
 * jiffle.compile();
 * </code></pre>
 * 
 * @param scriptFile file containing the Jiffle script
 * 
 * @param params defines the names and roles of image variables
 *        referred to in the script.
 * 
 * @throws JiffleException on compilation errors
 */
public Jiffle(File scriptFile, Map<String, Jiffle.ImageRole> params)
    throws it.geosolutions.jaiext.jiffle.JiffleException {
  init();
  setScript(scriptFile);
  setImageParams(params);
  compile();
}

private void setupSingleDestScript() throws JiffleException {
  String script = "dest = 42;";
  jiffle.setScript(script);
  
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  jiffle.setImageParams(imageParams);
  jiffle.compile();
}

/**
 * Creates a new instance by compiling the provided script. Using this
 * constructor is equivalent to:
 * <pre><code>
 * Jiffle jiffle = new Jiffle();
 * jiffle.setScript(script);
 * jiffle.setImageParams(params);
 * jiffle.compile();
 * </code></pre>
 * 
 * @param script Jiffle source code to compile
 * 
 * @param params defines the names and roles of image variables
 *        referred to in the script.
 * @throws JiffleException on compilation errors
 * 
 */
public Jiffle(String script, Map<String, Jiffle.ImageRole> params)
    throws it.geosolutions.jaiext.jiffle.JiffleException {
  init();
  setScript(script);
  setImageParams(params);
  compile();
}

/**
 * Creates a new instance by compiling the provided script. Using this
 * constructor is equivalent to:
 * <pre><code>
 * Jiffle jiffle = new Jiffle();
 * jiffle.setScript(script);
 * jiffle.setImageParams(params);
 * jiffle.compile();
 * </code></pre>
 * 
 * @param script Jiffle source code to compile
 * 
 * @param params defines the names and roles of image variables
 *        referred to in the script.
 * @throws JiffleException on compilation errors
 * 
 */
public Jiffle(String script, Map<String, Jiffle.ImageRole> params)
    throws it.geosolutions.jaiext.jiffle.JiffleException {
  init();
  setScript(script);
  setImageParams(params);
  compile();
}

@Test
public void setImageParams() {
  System.out.println("   set and get image params");
  
  imageParams.put("src1", Jiffle.ImageRole.SOURCE);
  imageParams.put("src2", Jiffle.ImageRole.SOURCE);
  imageParams.put("dest1", Jiffle.ImageRole.DEST);
  imageParams.put("dest2", Jiffle.ImageRole.DEST);
  jiffle.setImageParams(imageParams);
  
  Map<String, Jiffle.ImageRole> result = jiffle.getImageParams();
  assertEquals(imageParams.size(), result.size());
  for (String name : imageParams.keySet()) {
    assertTrue(imageParams.get(name).equals(result.get(name)));
  }
}

@Test(expected=JiffleParserException.class)
public void compileInvalidScriptThrowsException() throws Exception {
  System.out.println("   compile invalid script and get exception");
  
  // script with an uninitialized variable
  String script = "dest = x;";
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  
  jiffle.setScript(script);
  jiffle.setImageParams(imageParams);
  jiffle.compile();
}

  @Test(expected=JiffleException.class)
  public void getRuntimeBeforeCompiling() throws Exception {
    System.out.println("   getRuntimeInstance before compiling");
    
    String script = "dest = 42;";
    jiffle.setScript(script);
    
    imageParams.put("dest", Jiffle.ImageRole.DEST);
    jiffle.setImageParams(imageParams);
    
    JiffleRuntime runtime = jiffle.getRuntimeInstance();
  }    
}

private JiffleDirectRuntime getRuntime(String script) throws Exception {
  Jiffle jiffle = new Jiffle();
  jiffle.setScript(script);
  
  Map<String, Jiffle.ImageRole> params = new HashMap<>();
  params.put("dest", Jiffle.ImageRole.DEST);
  jiffle.setImageParams(params);
  jiffle.compile();
  
  return jiffle.getRuntimeInstance();
}

jiffle.setImageParams(imageParams);
jiffle.compile();
runtime =

jiffle.setImageParams(imageParams);
jiffle.compile();
runtime =

@Test
public void compileValidScript() throws Exception {
  System.out.println("   compile valid script");
  
  String script = "dest = 42;";
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  
  jiffle.setScript(script);
  jiffle.setImageParams(imageParams);
  jiffle.compile();
  
  assertTrue(jiffle.isCompiled());
}

@Test
public void compileInvalidScriptAndCheckStatus() throws Exception {
  System.out.println("   compile invalid script and check status");
  
  // script with an uninitialized variable
  String script = "dest = x;";
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  
  jiffle.setScript(script);
  jiffle.setImageParams(imageParams);
  
  try {
    jiffle.compile();
  } catch (JiffleParserException ignored) {}
  
  assertFalse(jiffle.isCompiled());
}

jiffle.setImageParams(imageParams);

private JiffleDirectRuntime getRuntime(String script) throws Exception {
  Jiffle jiffle = new Jiffle();
  jiffle.setScript(script);
  
  Map<String, Jiffle.ImageRole> imageParams = new HashMap<>();
  imageParams.put("dest", Jiffle.ImageRole.DEST);
  
  jiffle.setImageParams(imageParams);
  jiffle.compile();
  JiffleDirectRuntime runtime = jiffle.getRuntimeInstance();
  
  WritableRenderedImage destImg = ImageUtilities.createConstantImage(WIDTH, WIDTH, 0d);
  runtime.setDestinationImage("dest", destImg);
  
  return runtime;
}

setImageParams(r.result);

setImageParams(r.result);