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+/*
+ * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package javax.media.j3d;
+
+import javax.vecmath.Point3d;
+import javax.vecmath.Vector3d;
+
+/**
+ * The IndexedLineArray object draws the array of vertices as individual
+ * line segments. Each pair of vertices defines a line to be drawn.
+ */
+
+class IndexedLineArrayRetained extends IndexedGeometryArrayRetained {
+
+ IndexedLineArrayRetained() {
+ this.geoType = GEO_TYPE_INDEXED_LINE_SET;
+ }
+
+ @Override
+ boolean intersect(PickShape pickShape, PickInfo pickInfo, int flags, Point3d iPnt,
+ GeometryRetained geom, int geomIndex) {
+ Point3d pnts[] = new Point3d[2];
+ double sdist[] = new double[1];
+ double minDist = Double.MAX_VALUE;
+ double x = 0, y = 0, z = 0;
+ //NVaidya
+ // Bug 447: While loops below now traverse over all
+ // elements in the valid index range from initialIndexIndex
+ // to initialIndexInex + validIndexCount - 1
+ int i = initialIndexIndex;
+ int loopStopIndex = initialIndexIndex + validIndexCount;
+ pnts[0] = new Point3d();
+ pnts[1] = new Point3d();
+ int[] vtxIndexArr = new int[2];
+
+ switch (pickShape.getPickType()) {
+ case PickShape.PICKRAY:
+ PickRay pickRay= (PickRay) pickShape;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectLineAndRay(pnts[0], pnts[1], pickRay.origin,
+ pickRay.direction, sdist,
+ iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKSEGMENT:
+ PickSegment pickSegment = (PickSegment) pickShape;
+ Vector3d dir =
+ new Vector3d(pickSegment.end.x - pickSegment.start.x,
+ pickSegment.end.y - pickSegment.start.y,
+ pickSegment.end.z - pickSegment.start.z);
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectLineAndRay(pnts[0], pnts[1],
+ pickSegment.start,
+ dir, sdist, iPnt) &&
+ (sdist[0] <= 1.0)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKBOUNDINGBOX:
+ BoundingBox bbox = (BoundingBox)
+ ((PickBounds) pickShape).bounds;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectBoundingBox(pnts, bbox, sdist, iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKBOUNDINGSPHERE:
+ BoundingSphere bsphere = (BoundingSphere)
+ ((PickBounds) pickShape).bounds;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectBoundingSphere(pnts, bsphere, sdist, iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKBOUNDINGPOLYTOPE:
+ BoundingPolytope bpolytope = (BoundingPolytope)
+ ((PickBounds) pickShape).bounds;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectBoundingPolytope(pnts, bpolytope, sdist, iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKCYLINDER:
+ PickCylinder pickCylinder= (PickCylinder) pickShape;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectCylinder(pnts, pickCylinder, sdist, iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKCONE:
+ PickCone pickCone= (PickCone) pickShape;
+
+ while (i < loopStopIndex) {
+ for(int k=0; k<2; k++) {
+ vtxIndexArr[k] = indexCoord[i];
+ getVertexData(indexCoord[i++], pnts[k]);
+ }
+ if (intersectCone(pnts, pickCone, sdist, iPnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = iPnt.x;
+ y = iPnt.y;
+ z = iPnt.z;
+ if((flags & PickInfo.CLOSEST_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ if((flags & PickInfo.ALL_GEOM_INFO) != 0) {
+ storeInterestData(pickInfo, flags, geom, geomIndex,
+ vtxIndexArr, iPnt, sdist[0]);
+ }
+ }
+ }
+ break;
+ case PickShape.PICKPOINT:
+ // Should not happen since API already check for this
+ throw new IllegalArgumentException(J3dI18N.getString("IndexedLineArrayRetained0"));
+ default:
+ throw new RuntimeException("PickShape not supported for intersection");
+ }
+
+ if (minDist < Double.MAX_VALUE) {
+ iPnt.x = x;
+ iPnt.y = y;
+ iPnt.z = z;
+ return true;
+ }
+ return false;
+
+ }
+
+ @Override
+ boolean intersect(Point3d[] pnts) {
+ Point3d[] points = new Point3d[2];
+ Vector3d dir;
+ double dist[] = new double[1];
+ //NVaidya
+ // Bug 447: correction for loop indices
+ int i = initialIndexIndex;
+ int loopStopIndex = initialIndexIndex + validIndexCount;
+ points[0] = new Point3d();
+ points[1] = new Point3d();
+
+ switch (pnts.length) {
+ case 3: // Triangle/Quad , common case first
+ case 4:
+ while (i < loopStopIndex) {
+ getVertexData(indexCoord[i++], points[0]);
+ getVertexData(indexCoord[i++], points[1]);
+ if (intersectSegment(pnts, points[0], points[1], dist,
+ null)) {
+ return true;
+ }
+ }
+ break;
+ case 2: // Line
+ dir = new Vector3d();
+ while (i < loopStopIndex) {
+ getVertexData(indexCoord[i++], points[0]);
+ getVertexData(indexCoord[i++], points[1]);
+ dir.x = points[1].x - points[0].x;
+ dir.y = points[1].y - points[0].y;
+ dir.z = points[1].z - points[0].z;
+ if (intersectLineAndRay(pnts[0], pnts[1], points[0],
+ dir, dist, null) &&
+ (dist[0] <= 1.0)) {
+ return true;
+ }
+ }
+ break;
+ case 1: // Point
+ dir = new Vector3d();
+ while (i < loopStopIndex) {
+ getVertexData(indexCoord[i++], points[0]);
+ getVertexData(indexCoord[i++], points[1]);
+ dir.x = points[1].x - points[0].x;
+ dir.y = points[1].y - points[0].y;
+ dir.z = points[1].z - points[0].z;
+ if (intersectPntAndRay(pnts[0], points[0], dir, dist) &&
+ (dist[0] <= 1.0)) {
+ return true;
+ }
+ }
+ break;
+ }
+ return false;
+ }
+
+
+ @Override
+ boolean intersect(Transform3D thisToOtherVworld,
+ GeometryRetained geom) {
+
+ Point3d[] pnts = new Point3d[2];
+ //NVaidya
+ // Bug 447: correction for loop indices
+ int i = initialIndexIndex;
+ int loopStopIndex = initialIndexIndex + validIndexCount;
+ pnts[0] = new Point3d();
+ pnts[1] = new Point3d();
+
+ while (i < loopStopIndex) {
+ getVertexData(indexCoord[i++], pnts[0]);
+ getVertexData(indexCoord[i++], pnts[1]);
+ thisToOtherVworld.transform(pnts[0]);
+ thisToOtherVworld.transform(pnts[1]);
+ if (geom.intersect(pnts)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ // the bounds argument is already transformed
+ @Override
+ boolean intersect(Bounds targetBound) {
+ Point3d[] pnts = new Point3d[2];
+ //NVaidya
+ // Bug 447: correction for loop indices
+ int i = initialIndexIndex;
+ int loopStopIndex = initialIndexIndex + validIndexCount;
+ pnts[0] = new Point3d();
+ pnts[1] = new Point3d();
+
+ switch(targetBound.getPickType()) {
+ case PickShape.PICKBOUNDINGBOX:
+ BoundingBox box = (BoundingBox) targetBound;
+
+ while(i < loopStopIndex) {
+ getVertexData(indexCoord[i++], pnts[0]);
+ getVertexData(indexCoord[i++], pnts[1]);
+ if (intersectBoundingBox(pnts, box, null, null)) {
+ return true;
+ }
+ }
+ break;
+ case PickShape.PICKBOUNDINGSPHERE:
+ BoundingSphere bsphere = (BoundingSphere) targetBound;
+
+ while(i < loopStopIndex) {
+ getVertexData(indexCoord[i++], pnts[0]);
+ getVertexData(indexCoord[i++], pnts[1]);
+ if (intersectBoundingSphere(pnts, bsphere, null, null)) {
+ return true;
+ }
+ }
+ break;
+ case PickShape.PICKBOUNDINGPOLYTOPE:
+ BoundingPolytope bpolytope = (BoundingPolytope) targetBound;
+
+ while(i < loopStopIndex) {
+ getVertexData(indexCoord[i++], pnts[0]);
+ getVertexData(indexCoord[i++], pnts[1]);
+ if (intersectBoundingPolytope(pnts, bpolytope, null, null)) {
+ return true;
+ }
+ }
+ break;
+ default:
+ throw new RuntimeException("Bounds not supported for intersection "
+ + targetBound);
+ }
+ return false;
+ }
+
+ @Override
+ int getClassType() {
+ return LINE_TYPE;
+ }
+}
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