Examples with ByteType mpicbg.imglib.type.numeric.integer.ByteType used on opensource projects

Example 1 with ByteType

use of mpicbg.imglib.type.numeric.integer.ByteType in project TrakEM2 by trakem2.

the class AreaUtils method generateTriangles.

/**
 * Expects areas in local coordinates to the Displayable @param d.
 *  @param d
 *  @param scale The scaling of the entire universe, to limit the overall box
 *  @param resample_ The optimization parameter for marching cubes (i.e. a value of 2 will scale down to half, then apply marching cubes, then scale up by 2 the vertices coordinates).
 *  @param areas
 *  @return The List of triangles involved, specified as three consecutive vertices. A list of Point3f vertices.
 */
public static List<Point3f> generateTriangles(final Displayable d, final double scale, final int resample_, final Map<Layer, Area> areas) {
    // in the LayerSet, layers are ordered by Z already.
    try {
        int n = areas.size();
        if (0 == n)
            return null;
        final int resample;
        if (resample_ <= 0) {
            resample = 1;
            Utils.log2("Fixing zero or negative resampling value to 1.");
        } else
            resample = resample_;
        final LayerSet layer_set = d.getLayerSet();
        final AffineTransform aff = d.getAffineTransformCopy();
        final Rectangle r = d.getBoundingBox(null);
        // remove translation from a copy of the Displayable's AffineTransform
        final AffineTransform at_translate = new AffineTransform();
        at_translate.translate(-r.x, -r.y);
        aff.preConcatenate(at_translate);
        // incorporate resampling scaling into the transform
        final AffineTransform atK = new AffineTransform();
        // Utils.log("resample: " + resample + "  scale: " + scale);
        // 'scale' is there to limit gigantic universes
        final double K = (1.0 / resample) * scale;
        atK.scale(K, K);
        aff.preConcatenate(atK);
        final Calibration cal = layer_set.getCalibrationCopy();
        // Find first layer, compute depth, and fill in the depth vs area map
        Layer first_layer = null, last_layer = null;
        final int w = (int) Math.ceil(r.width * K);
        final int h = (int) Math.ceil(r.height * K);
        int depth = 0;
        final Map<Integer, Area> ma = new HashMap<Integer, Area>();
        for (final Layer la : layer_set.getLayers()) {
            // layers sorted by Z ASC
            final Area area = areas.get(la);
            if (null != area) {
                ma.put(depth, area);
                if (null == first_layer) {
                    first_layer = la;
                }
                // Utils.log("area at depth " + depth + " for layer " + la);
                depth++;
                n--;
            } else if (0 != depth) {
                // Utils.log("Empty area at depth " + depth);
                // an empty layer
                depth++;
            }
            if (0 == n) {
                last_layer = la;
                // no more areas to paint
                break;
            }
        }
        if (0 == depth) {
            Utils.log("ERROR could not find any areas for " + d);
            return null;
        }
        if (0 != n) {
            Utils.log("WARNING could not find all areas for " + d);
        }
        // No zero-padding: Marching Cubes now can handle edges
        final ShapeList<ByteType> shapeList = new ShapeListCached<ByteType>(new int[] { w, h, depth }, new ByteType(), 32);
        final Image<ByteType> shapeListImage = new Image<ByteType>(shapeList, shapeList.getBackground(), "ShapeListContainer");
        // 255 or -1 don't work !? So, giving the highest value (127) that is both a byte and an int.
        final ByteType intensity = new ByteType((byte) 127);
        for (final Map.Entry<Integer, Area> e : ma.entrySet()) {
            Area a = e.getValue();
            if (!aff.isIdentity()) {
                a = M.areaInIntsByRounding(a.createTransformedArea(aff));
            }
            shapeList.addShape(a, intensity, new int[] { e.getKey() });
        }
        // debug:
        // ImagePlus imp = ImageJFunctions.displayAsVirtualStack(shapeListImage);
        // imp.getProcessor().setMinAndMax( 0, 255 );
        // imp.show();
        // Utils.log2("Using imglib Shape List Image Container");
        // Now marching cubes
        // origins at 0,0,0: uncalibrated
        final List<Point3f> list = new MCTriangulator().getTriangles(shapeListImage, 1, new float[3]);
        // The list of triangles has coordinates:
        // - in x,y: in pixels, scaled by K = (1 / resample) * scale,
        // translated by r.x, r.y (the top-left coordinate of this AreaList bounding box)
        // - in z: in stack slice indices
        // So all x,y,z must be corrected in x,y and z of the proper layer
        // final double offset = first_layer.getZ();
        final int i_first_layer = layer_set.indexOf(first_layer);
        // The x,y translation to correct each point by:
        final float dx = (float) (r.x * scale * cal.pixelWidth);
        final float dy = (float) (r.y * scale * cal.pixelHeight);
        // Correct x,y by resampling and calibration, but not scale
        // scale is already in the pixel coordinates
        final float rsw = (float) (resample * cal.pixelWidth);
        final float rsh = (float) (resample * cal.pixelHeight);
        // no resampling in Z. and Uses pixelWidth, not pixelDepth.
        final double sz = scale * cal.pixelWidth;
        // debug:
        /*
			// which p.z types exist?
			final TreeSet<Float> ts = new TreeSet<Float>();
			for (final Iterator it = list.iterator(); it.hasNext(); ) {
				ts.add(((Point3f)it.next()).z);
			}
			for (final Float pz : ts) Utils.log2("A z: " + pz);
			*/
        // debug: How many different Z?
        /*
			HashSet<Float> zs = new HashSet<Float>();
			for (Point3f p : list) {
				zs.add(p.z);
			}
			ArrayList<Float> a = new ArrayList<Float>(zs);
			java.util.Collections.sort(a);
			for (Float f : a) {
				Utils.log("f: " + f);
			}
			*/
        // Utils.log2("Number of slices: " + imp.getNSlices());
        // Fix all points:
        // Read from list, modify and put into verts
        // and don't modify it if the verts already has it (it's just coincident)
        final Point3f[] verts = new Point3f[list.size()];
        // Utils.log("number of verts: " + verts.length + " mod 3: " + (verts.length % 3));
        final TreeMap<Integer, Point3f> output = new TreeMap<Integer, Point3f>();
        // The first section generates vertices at -1 and 0
        // The last section generates them at last_section_index and last_section_index +1
        // Capture from -1 to 0
        fix3DPoints(list, output, verts, first_layer.getZ(), 0, -1, dx, dy, rsw, rsh, sz, 1);
        int slice_index = 0;
        for (final Layer la : layer_set.getLayers().subList(i_first_layer, i_first_layer + depth)) {
            // If layer is empty, continue
            /* // YEAH don't! At least the immediate next layer would have points, like the extra Z level after last layer, to account for the thickness of the layer!
				if (empty_layers.contains(la)) {
					slice_index++;
					continue;
				}
				*/
            fix3DPoints(list, output, verts, la.getZ(), la.getThickness(), slice_index, dx, dy, rsw, rsh, sz, 1);
            slice_index++;
        }
        // Do the last layer again. The last layer has two Z planes in which it has pixels:
        try {
            // Capture from last_section_index to last_section_index+1, inclusive
            fix3DPoints(list, output, verts, last_layer.getZ() + last_layer.getThickness(), 0, slice_index, dx, dy, rsw, rsh, sz, 2);
        } catch (final Exception ee) {
            IJError.print(ee);
        }
        // Handle potential errors:
        if (0 != list.size() - output.size()) {
            Utils.log2("Unprocessed/unused points: " + (list.size() - output.size()));
            for (int i = 0; i < verts.length; i++) {
                if (null == verts[i]) {
                    final Point3f p = (Point3f) list.get(i);
                    Utils.log2("verts[" + i + "] = " + p.x + ", " + p.y + ", " + p.z + "  p.z as int: " + ((int) (p.z + 0.05f)));
                }
            }
            return new ArrayList<Point3f>(output.values());
        } else {
            return java.util.Arrays.asList(verts);
        }
    } catch (final Exception e) {
        e.printStackTrace();
    }
    return null;
}