From a084ba5bb729e23d9a1dc9823982f632ea3da31e Mon Sep 17 00:00:00 2001
From: Anders Nilsson <anders.nilsson@cs.lth.se>
Date: Fri, 24 Aug 2007 16:46:07 +0200
Subject: [PATCH] Can compute OBB for simple x3d example. No idea if it's
correct though.
---
x3d/BoundingBox.jrag | 67 ++++++++++++++++++++++++++++++++++++++++++++
x3d/OBB.java | 13 +++++++++
2 files changed, 80 insertions(+)
create mode 100644 x3d/BoundingBox.jrag
create mode 100644 x3d/OBB.java
diff --git a/x3d/BoundingBox.jrag b/x3d/BoundingBox.jrag
new file mode 100644
index 0000000..43740c5
--- /dev/null
+++ b/x3d/BoundingBox.jrag
@@ -0,0 +1,67 @@
+/* -*-Java-*- */
+
+/*
+ * Copyright (C) 2007 Anders Nilsson <anders.nilsson@cs.lth.se>
+ *
+ * This file is part of XmlSchemaCompiler.
+ */
+
+import com.jme.bounding.*;
+import com.jme.util.geom.BufferUtils;
+
+aspect BoundingBox {
+
+ syn OrientedBoundingBox ASTNode.obb() = new OrientedBoundingBox();
+ eq Start.obb() = getSpecification().obb();
+ eq Specification.obb() = getElement(0).obb();
+ eq ComplexElement.obb() = getNumElement()>0 ? getElement(0).obb() : null;
+ eq X3D.obb() {
+ for (int i=0; i<getNumElement(); i++) {
+ ComplexElement e = (ComplexElement) getElement(i);
+ if (e instanceof Scene) {
+ return e.obb();
+ }
+ }
+ // Fallback, didn't suceed in finding a bounding box
+ return null;
+ }
+ eq Scene.obb() {
+ OrientedBoundingBox obb = new OrientedBoundingBox();
+ StringBuffer sb = getCoordinates();
+ String s = sb.toString().replace('\"',' ').replace(',',' ');
+// String s = sb.toString().replace('\"',' ').replace(',',' ').replace(" "," ");
+ String[] sa = s.split(" ",0);
+ float[] fa = new float[sa.length];
+ for (int i=0,j=0; i<sa.length; i++) {
+ if (!sa[i].equals("")) {
+ fa[j++] = Float.parseFloat(sa[i]);
+ }
+ }
+ obb.computeFromPoints(BufferUtils.createFloatBuffer(fa));
+ obb.computeCorners();
+ System.out.println("Center: "+obb.getCenter());
+ System.out.println("Extent: "+obb.getExtent());
+ System.out.println("Volume: "+obb.getVolume());
+ return obb;
+ }
+}
+
+aspect Coordinates {
+ syn StringBuffer Element.getCoordinates() = new StringBuffer();
+ eq ComplexElement.getCoordinates() {
+ StringBuffer sb = new StringBuffer();
+ for (int i=0; i<getNumElement(); i++) {
+ sb.append(getElement(i).getCoordinates());
+ }
+ return sb;
+ }
+ eq Coordinate.getCoordinates() {
+ StringBuffer sb = new StringBuffer();
+ for (int i=0; i<getNumAttribute(); i++) {
+ sb.append(getAttribute(i).getCoordinates());
+ }
+ return sb;
+ }
+ syn String Attribute.getCoordinates() = null;
+ eq point.getCoordinates() = getAttrValue().getSTRING_LITERAL();
+}
\ No newline at end of file
diff --git a/x3d/OBB.java b/x3d/OBB.java
new file mode 100644
index 0000000..a497d01
--- /dev/null
+++ b/x3d/OBB.java
@@ -0,0 +1,13 @@
+import AST.Start;
+import com.jme.bounding.*;
+
+public class OBB extends Parser {
+ public static void main(String args[]) {
+ Start ast = parse(args);
+
+ OrientedBoundingBox obb = ast.obb();
+ System.out.println("X axis: "+obb.getXAxis());
+ System.out.println("Y axis: "+obb.getYAxis());
+ System.out.println("Z axis: "+obb.getZAxis());
+ }
+}
--
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