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-rw-r--r--src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java b/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
index 81928888c..d0566b54e 100644
--- a/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
+++ b/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
@@ -28,6 +28,7 @@
package com.jogamp.opengl.math.geom;
import com.jogamp.opengl.math.VectorUtil;
+import com.jogamp.opengl.util.PMVMatrix;
/**
@@ -350,6 +351,53 @@ public class AABBox implements Cloneable {
VectorUtil.checkEquality(high, other.high) ;
}
+ /**
+ * Assume this bounding box as being in object space and
+ * compute the window bounding box.
+ * <p>
+ * If <code>useCenterZ</code> is <code>true</code>,
+ * only 4 {@link PMVMatrix#gluProject(float, float, float, int[], int, float[], int) gluProject}
+ * operations are made on points [1..4] using {@link #getCenter()}'s z-value.
+ * Otherwise 8 {@link PMVMatrix#gluProject(float, float, float, int[], int, float[], int) gluProject}
+ * operation on all 8 points are made.
+ * </p>
+ * <pre>
+ * [2] ------ [4]
+ * | |
+ * | |
+ * [1] ------ [3]
+ * </pre>
+ * @param pmv
+ * @param view
+ * @param useCenterZ
+ * @param tmpV3 TODO
+ * @return
+ */
+ public AABBox mapToWindow(final AABBox result, final PMVMatrix pmv, final int[] view, final boolean useCenterZ, float[] tmpV3) {
+ float objZ = useCenterZ ? center[2] : getMinZ();
+ pmv.gluProject(getMinX(), getMinY(), objZ, view, 0, tmpV3, 0);
+ result.reset();
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMinX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMaxX(), getMinY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMaxX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ if( !useCenterZ ) {
+ objZ = getMaxZ();
+ pmv.gluProject(getMinX(), getMinY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMinX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMaxX(), getMinY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ pmv.gluProject(getMaxX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+ result.resize(tmpV3, 0);
+ }
+ return result;
+ }
+
@Override
public final String toString() {
return "[ dim "+getWidth()+" x "+getHeight()+" x "+getDepth()+