Merge branch 'vrapi' of https://github.com/processing/processing-android.git into vrapi

Author: codeanticode

core/src/processing/opengl/PGraphics2D.java

@@ -25,6 +25,7 @@
 package processing.opengl;
 
 import processing.core.PGraphics;
+import processing.core.PMatrix2D;
 import processing.core.PMatrix3D;
 import processing.core.PShape;
 import processing.core.PShapeSVG;
@@ -547,6 +548,19 @@ public float screenZ(float x, float y, float z) {
     return 0;
   }
 
+  @Override
+  public PMatrix2D getMatrix(PMatrix2D target) {
+    if (target == null) {
+      target = new PMatrix2D();
+    }
+    // This set operation is well defined, since modelview is a 2D-only
+    // transformation matrix in the P2D renderer.
+    target.set(modelview.m00, modelview.m01, modelview.m03,
+               modelview.m10, modelview.m11, modelview.m13);
+    return target;
+
+  }
+
   @Override
   public PMatrix3D getMatrix(PMatrix3D target) {
     showVariationWarning("getMatrix");