From 250832f581d8acccf0b62259e2ec08adb259be0e Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Tue, 14 Feb 2023 09:43:35 +0100
Subject: Graph RegionRenderer: Expose int[4] viewport for convenience

---
 .../jogamp/graph/curve/opengl/RegionRenderer.java  | 29 ++++++++++++++--------
 1 file changed, 18 insertions(+), 11 deletions(-)

(limited to 'src/jogl/classes/com/jogamp/graph')

diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
index 0c782d93e..6222c6265 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
@@ -152,17 +152,21 @@ public class RegionRenderer {
     private final GLCallback enableCallback;
     private final GLCallback disableCallback;
 
-    private int vp_width;
-    private int vp_height;
+    private final int[] viewport = new int[] { 0, 0, 0, 0 };
     private boolean initialized;
     private boolean vboSupported = false;
 
     public final boolean isInitialized() { return initialized; }
 
+    /** Copies the current viewport in given target and returns it for chaining. */
+    public final int[/*4*/] getViewport(final int[/*4*/] target) {
+        System.arraycopy(viewport, 0, target, 0, 4);
+        return target;
+    }
     /** Return width of current viewport */
-    public final int getWidth() { return vp_width; }
+    public final int getWidth() { return viewport[2]; }
     /** Return height of current viewport */
-    public final int getHeight() { return vp_height; }
+    public final int getHeight() { return viewport[3]; }
 
     public final PMVMatrix getMatrix() { return rs.getMatrix(); }
 
@@ -261,15 +265,16 @@ public class RegionRenderer {
         }
     }
 
-    /** No PMVMatrix operation is performed here. PMVMatrix is marked dirty. */
+    /**
+     * No PMVMatrix operation is performed here.
+     */
     public final void reshapeNotify(final int width, final int height) {
-        this.vp_width = width;
-        this.vp_height = height;
+        viewport[2] = width;
+        viewport[3] = height;
     }
 
     public final void reshapePerspective(final float angle, final int width, final int height, final float near, final float far) {
-        this.vp_width = width;
-        this.vp_height = height;
+        reshapeNotify(width, height);
         final float ratio = (float)width/(float)height;
         final PMVMatrix p = rs.getMatrix();
         p.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
@@ -277,9 +282,11 @@ public class RegionRenderer {
         p.gluPerspective(angle, ratio, near, far);
     }
 
+    /**
+     * Perspective orthogonal, method calls {@link #reshapeNotify(int, int, int, int)}.
+     */
     public final void reshapeOrtho(final int width, final int height, final float near, final float far) {
-        this.vp_width = width;
-        this.vp_height = height;
+        reshapeNotify(width, height);
         final PMVMatrix p = rs.getMatrix();
         p.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
         p.glLoadIdentity();
-- 
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