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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 PointArray object draws the array of vertices as individual points.
+ */
+
+class PointArrayRetained extends GeometryArrayRetained {
+
+ PointArrayRetained() {
+ this.geoType = GEO_TYPE_POINT_SET;
+ }
+
+ @Override
+ boolean intersect(PickShape pickShape, PickInfo pickInfo, int flags, Point3d iPnt,
+ GeometryRetained geom, int geomIndex) {
+ double sdist[] = new double[1];
+ double minDist = Double.MAX_VALUE;
+ double x = 0, y = 0, z = 0;
+ int i = ((vertexFormat & GeometryArray.BY_REFERENCE) == 0 ?
+ initialVertexIndex : initialCoordIndex);
+ Point3d pnt = new Point3d();
+ int[] vtxIndexArr = new int[1];
+
+ switch (pickShape.getPickType()) {
+ case PickShape.PICKRAY:
+ PickRay pickRay= (PickRay) pickShape;
+
+ while (i < validVertexCount) {
+ vtxIndexArr[0] = i;
+ getVertexData(i++, pnt);
+ if (intersectPntAndRay(pnt, pickRay.origin,
+ pickRay.direction, sdist)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = pnt.x;
+ y = pnt.y;
+ z = pnt.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 < validVertexCount) {
+ vtxIndexArr[0] = i;
+ getVertexData(i++, pnt);
+ if (intersectPntAndRay(pnt, pickSegment.start,
+ dir, sdist) &&
+ (sdist[0] <= 1.0)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = pnt.x;
+ y = pnt.y;
+ z = pnt.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:
+ case PickShape.PICKBOUNDINGSPHERE:
+ case PickShape.PICKBOUNDINGPOLYTOPE:
+ Bounds bounds = ((PickBounds) pickShape).bounds;
+
+ while (i < validVertexCount) {
+ vtxIndexArr[0] = i;
+ getVertexData(i++, pnt);
+ if (bounds.intersect(pnt)) {
+ if (flags == 0) {
+ return true;
+ }
+ sdist[0] = pickShape.distance(pnt);
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = pnt.x;
+ y = pnt.y;
+ z = pnt.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 < validVertexCount) {
+ vtxIndexArr[0] = i;
+ getVertexData(i++, pnt);
+ if (intersectCylinder(pnt, pickCylinder, sdist)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = pnt.x;
+ y = pnt.y;
+ z = pnt.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 < validVertexCount) {
+ vtxIndexArr[0] = i;
+ getVertexData(i++, pnt);
+ if (intersectCone(pnt, pickCone, sdist)) {
+ if (flags == 0) {
+ return true;
+ }
+ if (sdist[0] < minDist) {
+ minDist = sdist[0];
+ x = pnt.x;
+ y = pnt.y;
+ z = pnt.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("PointArrayRetained0"));
+ 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 point = new Point3d();
+ int i = ((vertexFormat & GeometryArray.BY_REFERENCE) == 0 ?
+ initialVertexIndex : initialCoordIndex);
+
+ switch (pnts.length) {
+ case 3: // Triangle
+ while (i < validVertexCount) {
+ getVertexData(i++, point);
+ if (intersectTriPnt(pnts[0], pnts[1], pnts[2], point)) {
+ return true;
+ }
+ }
+ break;
+ case 4: // Quad
+ while (i < validVertexCount) {
+ getVertexData(i++, point);
+ if (intersectTriPnt(pnts[0], pnts[1], pnts[2], point) ||
+ intersectTriPnt(pnts[0], pnts[2], pnts[3], point)) {
+ return true;
+ }
+ }
+ break;
+ case 2: // Line
+ double dist[] = new double[1];
+ Vector3d dir = new Vector3d();
+
+ while (i < validVertexCount) {
+ getVertexData(i++, point);
+ dir.x = pnts[1].x - pnts[0].x;
+ dir.y = pnts[1].y - pnts[0].y;
+ dir.z = pnts[1].z - pnts[0].z;
+ if (intersectPntAndRay(point, pnts[0], dir, dist) &&
+ (dist[0] <= 1.0)) {
+ return true;
+ }
+ }
+ break;
+ case 1: // Point
+ while (i < validVertexCount) {
+ getVertexData(i++, point);
+ if ((pnts[0].x == point.x) &&
+ (pnts[0].y == point.y) &&
+ (pnts[0].z == point.z)) {
+ return true;
+ }
+ }
+ break;
+ }
+ return false;
+ }
+
+
+ @Override
+ boolean intersect(Transform3D thisToOtherVworld,
+ GeometryRetained geom) {
+
+ Point3d[] pnt = new Point3d[1];
+ int i = ((vertexFormat & GeometryArray.BY_REFERENCE) == 0 ?
+ initialVertexIndex : initialCoordIndex);
+ pnt[0] = new Point3d();
+
+ while (i < validVertexCount) {
+ getVertexData(i++, pnt[0]);
+ thisToOtherVworld.transform(pnt[0]);
+ if (geom.intersect(pnt)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ // the bounds argument is already transformed
+ @Override
+ boolean intersect(Bounds targetBound) {
+ int i = ((vertexFormat & GeometryArray.BY_REFERENCE) == 0 ?
+ initialVertexIndex : initialCoordIndex);
+ Point3d pnt = new Point3d();
+
+ while (i < validVertexCount) {
+ getVertexData(i++, pnt);
+ if (targetBound.intersect(pnt)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ int getClassType() {
+ return POINT_TYPE;
+ }
+}
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