Examples with GeometryStripArray org.scijava.java3d.GeometryStripArray used on opensource projects

Example 1 with GeometryStripArray

use of org.scijava.java3d.GeometryStripArray in project GDSC-SMLM by aherbert.

the class ItemMesh method reorderFast.

@Override
public void reorderFast(int[] indices) {
    changed = true;
    final int oldSize = size();
    final int size = (indices == null) ? 0 : Math.min(oldSize, indices.length);
    if (size == 0 || indices == null) {
        points = new Point3f[0];
        sizes = new Point3f[0];
        this.setGeometry(null);
        return;
    }
    // From here on we assume the current geometry will not be null
    // as this only happens when the original size is zero. Size has
    // been checked at this point to be the smaller of new and old.
    final GeometryArray ga = (GeometryArray) getGeometry();
    points = reorderPoints(points, indices);
    // Sizes could be null or a single size
    if (sizes != null && sizes.length == points.length) {
        sizes = reorderPoints(sizes, indices);
    }
    // Reorder all things in the geometry: coordinates and colour.
    // The normals, indices, strip counts are are unchanged.
    // int objectSize = vertexCount;
    int countPerObject = vertexCount * 3;
    final float[] oldCoords = new float[oldSize * countPerObject];
    ga.getCoordinates(0, oldCoords);
    final float[] coords = new float[size * countPerObject];
    for (int i = 0; i < size; i++) {
        final int j = indices[i];
        final int ii = i * countPerObject;
        final int jj = j * countPerObject;
        System.arraycopy(oldCoords, jj, coords, ii, countPerObject);
    }
    final float[] colors;
    if (hasColor()) {
        countPerObject = colorUpdater.size();
        final int colorSize = oldSize * countPerObject;
        final float[] oldColors = (colorSize < oldCoords.length) ? oldCoords : new float[colorSize];
        ga.getColors(0, oldColors);
        colors = new float[size * countPerObject];
        for (int i = 0; i < size; i++) {
            final int j = indices[i];
            final int ii = i * countPerObject;
            final int jj = j * countPerObject;
            System.arraycopy(oldColors, jj, colors, ii, countPerObject);
        }
    } else {
        colors = null;
    }
    ga.updateData(new GeometryUpdater() {

        @Override
        public void updateData(Geometry geometry) {
            final GeometryArray ga = (GeometryArray) geometry;
            // We re-use the geometry and just truncate the vertex count
            ga.setCoordinates(0, coords);
            if (colors != null) {
                ga.setColors(0, colors);
            }
            if (size != oldSize) {
                if (isIndexGeometryArray()) {
                    if (isStripGeometryArray()) {
                        int[] indices = new int[indexCount * oldSize];
                        ((IndexedGeometryStripArray) ga).getStripIndexCounts(indices);
                        indices = Arrays.copyOf(indices, indexCount * size);
                        ((IndexedGeometryStripArray) ga).setStripIndexCounts(indices);
                    } else {
                        ((IndexedGeometryArray) ga).setValidIndexCount(size * indexCount);
                    }
                } else if (isStripGeometryArray()) {
                    int[] indices = new int[vertexCount * oldSize];
                    ((GeometryStripArray) ga).getStripVertexCounts(indices);
                    indices = Arrays.copyOf(indices, vertexCount * size);
                    ((GeometryStripArray) ga).setStripVertexCounts(indices);
                } else {
                    ga.setValidVertexCount(size * vertexCount);
                }
            }
        }
    });
}

Example 2 with GeometryStripArray

use of org.scijava.java3d.GeometryStripArray in project GDSC-SMLM by aherbert.

the class ItemMesh method createGeometryArray.

/**
 * Creates the geometry array.
 *
 * @param sourceGa the source geometry array
 * @param format the format
 * @return the geometry array
 */
protected GeometryArray createGeometryArray(GeometryArray sourceGa, int format) {
    // Create using reflection
    final GeometryArray ga;
    try {
        final Class<?> clazz = sourceGa.getClass();
        // clazz = clazz.asSubclass(clazz);
        final LocalList<Class<?>> paramTypes = new LocalList<>(4);
        final LocalList<Object> paramValues = new LocalList<>(4);
        paramTypes.add(int.class);
        paramTypes.add(int.class);
        paramValues.add(vertexCount * points.length);
        paramValues.add(vertexFormat | format);
        if (isIndexGeometryArray()) {
            paramTypes.add(int.class);
            paramValues.add(indexCount * points.length);
        }
        // Handle strips
        int numStrips = 0;
        int[] objectStripCounts = null;
        int[] allStripCounts = null;
        if (sourceGa instanceof IndexedGeometryStripArray) {
            final IndexedGeometryStripArray igsa = (IndexedGeometryStripArray) sourceGa;
            numStrips = igsa.getNumStrips();
            objectStripCounts = new int[numStrips];
            igsa.getStripIndexCounts(objectStripCounts);
        } else if (sourceGa instanceof GeometryStripArray) {
            final GeometryStripArray gsa = (GeometryStripArray) sourceGa;
            numStrips = gsa.getNumStrips();
            objectStripCounts = new int[numStrips];
            gsa.getStripVertexCounts(objectStripCounts);
        }
        if (objectStripCounts != null) {
            allStripCounts = new int[numStrips * points.length];
            duplicate(objectStripCounts, 0, numStrips, points.length, allStripCounts, 0);
            paramTypes.add(int[].class);
            paramValues.add(allStripCounts);
        }
        final Class<?>[] paramTypes2 = paramTypes.toArray(new Class<?>[0]);
        final Object[] paramValues2 = paramValues.toArray();
        ga = (GeometryArray) clazz.getConstructor(paramTypes2).newInstance(paramValues2);
    } catch (final Exception ex) {
        ex.printStackTrace();
        return null;
    }
    ga.setCapability(GeometryArray.ALLOW_COUNT_WRITE);
    ga.setCapability(GeometryArray.ALLOW_COUNT_READ);
    ga.setCapability(GeometryArray.ALLOW_FORMAT_READ);
    ga.setCapability(Geometry.ALLOW_INTERSECT);
    return ga;
}