/**
* ******************************************************************************* loadTemplateSGC
*
* <p>This method reads a scene graph component from the input file object. After loading the
* object, some of the properties of its geometry, like vertex normals, are calculated. This
* allows properties that are not necessarily stored in the mesh file (like smooth shading) to be
* applied to the model.
*
* <p>Note: Since reading from disk is expensive, this method is only supposed to be used to
* initialize the "templateSGCs" map. When a marker model is needed, we make a copy of one of the
* templates in this map.
* *******************************************************************************
*/
private static SceneGraphComponent loadTemplateSGC(File ff) {
SceneGraphComponent sgc = null;
try {
sgc = Readers.read(ff);
} catch (Exception ee) {
System.err.println("Error: Unable to read model file " + ff);
ee.printStackTrace();
System.exit(1);
}
GeometryMergeFactory gmf = new GeometryMergeFactory();
IndexedFaceSet ifs = gmf.mergeIndexedFaceSets(sgc);
SceneGraphUtility.removeChildren(sgc);
sgc.setGeometry(ifs);
return sgc;
}
public static void main(String[] args) {
// a little Scene (two boxes and a bangle, transfomation, appearance)
IndexedFaceSet box = Primitives.box(2, .5, .5, false);
IndexedFaceSet box2 = Primitives.box(2, .6, 0.4, true);
IndexedFaceSet zyl = Primitives.cylinder(20, 1, 0, .5, 5);
SceneGraphComponent original = new SceneGraphComponent();
SceneGraphComponent childNode1 = new SceneGraphComponent();
MatrixBuilder.euclidean().translate(0, 0, 1).assignTo(childNode1);
SceneGraphComponent childNode2 = new SceneGraphComponent();
Appearance app = new Appearance();
app.setAttribute(
CommonAttributes.POLYGON_SHADER + "." + CommonAttributes.DIFFUSE_COLOR,
new Color(255, 255, 0));
childNode2.setAppearance(app);
original.addChild(childNode1);
original.addChild(childNode2);
original.setGeometry(box2);
childNode1.setGeometry(box);
childNode2.setGeometry(zyl);
// the Factory:
GeometryMergeFactory mergeFact = new GeometryMergeFactory();
// play with the following 3 optional settings (by default they are true)
mergeFact.setRespectFaces(true);
mergeFact.setRespectEdges(true);
mergeFact.setGenerateVertexNormals(true);
// you can set some defaults:
List defaultAtts = new LinkedList();
List defaultAttValue = new LinkedList();
List value = new LinkedList();
defaultAtts.add(Attribute.COLORS);
defaultAttValue.add(value);
value.add(new double[] {0, 1, 0, 1}); // remember: only 4d colors
mergeFact.setDefaultFaceAttributes(defaultAtts, defaultAttValue);
// merge a list of geometrys:
// IndexedFaceSet[] list= new IndexedFaceSet[]{box2,zyl};
// IndexedFaceSet result=mergeFact.mergeIndexedFaceSets(list);
// or a complete tree:
IndexedFaceSet result = mergeFact.mergeGeometrySets(original);
SceneGraphComponent world = SceneGraphUtility.createFullSceneGraphComponent("world");
SceneGraphComponent merged = SceneGraphUtility.createFullSceneGraphComponent("merged");
merged.setGeometry(result);
MatrixBuilder.euclidean().translate(3, 0, 0).assignTo(merged);
world.addChildren(merged, original);
JRViewer.display(world);
}
