/**
* 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);
}
/**
* Simple algorithm to add or remove a quad 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 toggleSelectedQuad(boolean on, SelectionQuad sq) {
LOGGER.finest("on=" + on + " selectionQuad=" + sq);
if (on) {
// add the given quad to the list
if (selection.contains(sq)) return; // already in
selection.add(sq);
} else {
// remove the given quad from the list
if (!selection.contains(sq)) return; // not present
selection.remove(sq);
if (selection.size() == 0) {
QuadArray qa = (QuadArray) selectionShape.getGeometry();
qa.setValidVertexCount(0);
return;
}
}
// Use in-memory arrays instead of NIO because selection should not be
// too big
// => faster
QuadArray qa =
new QuadArray(
selection.size() * 4,
GeometryArray.COORDINATES | GeometryArray.COLOR_3 | GeometryArray.BY_REFERENCE);
float[] coords = new float[selection.size() * 4 * 3];
float[] colors = new float[selection.size() * 4 * 3];
for (int i = 0; i < coords.length; i += 12) {
SelectionQuad quad = selection.get(i / 12);
quad.updateCoords(grid, coords, i);
quad.updateColors(colors, i);
}
qa.setCoordRefFloat(coords);
qa.setColorRefFloat(colors);
qa.setCapability(GeometryArray.ALLOW_COUNT_WRITE);
// update selection Shape with the new selection list
if (selectionShape == null) {
Appearance a = new Appearance();
PolygonAttributes pa =
new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0);
pa.setPolygonOffset(0.5f); // between faces and edges
pa.setPolygonOffsetFactor(0.5f);
a.setPolygonAttributes(pa);
selectionShape = new Shape3D(qa, a);
selectionShape.setUserData(this);
selectionShape.setPickable(false);
selectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
selectionShape.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
BranchGroup bg = new BranchGroup();
bg.addChild(selectionShape);
addChild(bg);
} else selectionShape.setGeometry(qa);
}