X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FPoint.java;h=2de47a6d70dcca8e0bf56589802901a0ab809115;hp=61fa603bdb88af052bb13bb69cc0491585e4d800;hb=2d6bccf0ca59bca01f2a9942e90c7ddb9399ed44;hpb=fe5601878bcdd906f4b58aa204af45272bf21c61

diff --git a/src/edu/berkeley/qfat/geom/Point.java b/src/edu/berkeley/qfat/geom/Point.java
index 61fa603..2de47a6 100644
--- a/src/edu/berkeley/qfat/geom/Point.java
+++ b/src/edu/berkeley/qfat/geom/Point.java
@@ -1,5 +1,6 @@
 package edu.berkeley.qfat.geom;
 import javax.media.opengl.*;
+import javax.media.opengl.glu.*;
 
 /** point in 3-space; immutable */
 public final class Point implements HasBoundingBox {
@@ -27,5 +28,19 @@ public final class Point implements HasBoundingBox {
     public float getMinY() { return y; }
     public float getMaxZ() { return z; }
     public float getMinZ() { return z; }
+
+    public Point glProject(GL gl) {
+        Point p = this;
+        int viewport[] = new int[4];
+        double mvmatrix[] = new double[16];
+        double projmatrix[] = new double[16];
+        double wcoord[] = new double[4];
+        gl.glGetIntegerv(GL.GL_VIEWPORT, viewport, 0);
+        gl.glGetDoublev(GL.GL_MODELVIEW_MATRIX, mvmatrix, 0);
+        gl.glGetDoublev(GL.GL_PROJECTION_MATRIX, projmatrix, 0);
+        GLU glu = new GLU();
+        glu.gluProject(p.x, p.y, p.z, mvmatrix, 0, projmatrix, 0, viewport, 0, wcoord, 0);
+        return new Point(wcoord[0], wcoord[1], 0);
+    }
 }