public void addLinesAroundRegion(TransformGroup tg) {
Color3f x = new Color3f(Color.green.brighter().brighter());
Color3f y = new Color3f(Color.yellow.brighter().brighter());
Color3f z = new Color3f(Color.red.brighter().brighter());
LineArray wireframe = new LineArray(12 * 2, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
wireframe.setCapability(LineArray.ALLOW_COLOR_WRITE);
wireframe.setCapability(LineArray.ALLOW_COORDINATE_READ);
wireframe.setCapability(LineArray.ALLOW_COUNT_READ);
ArrayList<Point3f> vx = getVertices();
// Add lines parallel to x
wireframe.setCoordinate(0, vx.get(0));
wireframe.setCoordinate(1, vx.get(2));
wireframe.setCoordinate(2, vx.get(1));
wireframe.setCoordinate(3, vx.get(3));
wireframe.setCoordinate(4, vx.get(4));
wireframe.setCoordinate(5, vx.get(6));
wireframe.setCoordinate(6, vx.get(5));
wireframe.setCoordinate(7, vx.get(7));
for (int i = 0; i < 8; i++) wireframe.setColor(i, x);
// Add lines parallel to y
wireframe.setCoordinate(8, vx.get(0));
wireframe.setCoordinate(9, vx.get(4));
wireframe.setCoordinate(10, vx.get(1));
wireframe.setCoordinate(11, vx.get(5));
wireframe.setCoordinate(12, vx.get(2));
wireframe.setCoordinate(13, vx.get(6));
wireframe.setCoordinate(14, vx.get(3));
wireframe.setCoordinate(15, vx.get(7));
for (int i = 8; i < 16; i++) wireframe.setColor(i, y);
// Add lines parallel to z
wireframe.setCoordinate(16, vx.get(0));
wireframe.setCoordinate(17, vx.get(1));
wireframe.setCoordinate(18, vx.get(2));
wireframe.setCoordinate(19, vx.get(3));
wireframe.setCoordinate(20, vx.get(4));
wireframe.setCoordinate(21, vx.get(5));
wireframe.setCoordinate(22, vx.get(6));
wireframe.setCoordinate(23, vx.get(7));
for (int i = 16; i < 24; i++) wireframe.setColor(i, z);
Shape3D shape = new Shape3D(wireframe);
tg.addChild(shape);
}
/**
* 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);
}