Examples with BVNode maspack.geometry.BVNode used on opensource projects

Example 11 with BVNode

use of maspack.geometry.BVNode in project artisynth_core by artisynth.

the class SurfaceMeshContourIxer method getAllMIPs.

/**
 * Return an unordered list of MeshIntersectionPoints representing all
 * edge/face collisions between the lists of BVs nodes0 and nodes1.
 *
 * New MeshIntersectionPoints are generated and appended to allMips.
 * All Faces are assumed to be triangular! Undetermined behaviour if not the case.
 *
 * @param allMips Initialized ArrayList of MeshIntersectionPoints
 * @param nodes0 first list of BVs from BVTree.intersectTree
 * @param nodes1 second list of BVs from BVTree.intersectTree (same length as nodes0)
 *
 * @throws DegeneratePairCaseException if a degenerate case is detected.
 *           Points of those faces are perturbed before this exception is re-thrown
 */
protected void getAllMIPs(ArrayList<IntersectionPoint> allMips, ArrayList<BVNode> nodes0, ArrayList<BVNode> nodes1) throws DegeneratePairCaseException {
    assert nodes0.size() == nodes1.size();
    for (int i = 0; i < nodes0.size(); i++) {
        BVNode n0 = nodes0.get(i);
        BVNode n1 = nodes1.get(i);
        for (Boundable b0 : n0.getElements()) {
            for (Boundable b1 : n1.getElements()) {
                if (b0 instanceof Face && b1 instanceof Face) {
                    Face f0 = (Face) b0;
                    Face f1 = (Face) b1;
                    int numFound = 0;
                    numFound += doFaceFaceCollision(allMips, f0, f1, true);
                    numFound += doFaceFaceCollision(allMips, f1, f0, false);
                    if (myHandleDegen) {
                        if (numFound != 0 && numFound != 2) {
                            perturbVertices(f0);
                            perturbVertices(f1);
                            // System.out.println("Found " + numFound + " ixps");
                            throw new DegeneratePairCaseException();
                        }
                    }
                }
            }
        }
    }
}

Example 12 with BVNode

use of maspack.geometry.BVNode in project artisynth_core by artisynth.

the class MFreeModel3d method findDependentNodesAtRest.

/**
 * Finds nodes containing the given point at rest
 * @param pnt point to find nodes for
 * @param out output list of nodes influencing region
 * @return number of nodes found
 */
public int findDependentNodesAtRest(Point3d pnt, List<FemNode3d> out) {
    AABBTree nodeTree = myRestNodeTree;
    if (nodeTree == null) {
        nodeTree = buildRestNodeTree(myNodes);
        myRestNodeTree = nodeTree;
    }
    ArrayList<BVNode> bvNodes = new ArrayList<BVNode>(16);
    nodeTree.intersectPoint(bvNodes, pnt);
    if (bvNodes.size() == 0) {
        return 0;
    }
    int count = 0;
    for (BVNode n : bvNodes) {
        Boundable[] elements = n.getElements();
        for (int i = 0; i < elements.length; i++) {
            RestNode rnode = (RestNode) elements[i];
            FemNode3d node = rnode.getNode();
            if (((MFreeNode3d) node).isInDomain(pnt, 0)) {
                out.add(node);
                ++count;
            }
        }
    }
    return count;
}