GraphUI: Adopting Vec*f API; Adding Group; Scene + Group are Container, traversing the PMVMatrix throughout childs (-> see TreeTool).

Utilizing the Vec*f (and Matrix4f) API w/ AABBox et al renders our code more clean & safe,
see commit 15e60161787224e85172685f74dc0ac195969b51.

A Group allows to contain multiple Shapes,
hence the PMVMatrix must be traversed accordingly using TreeTool
for all operations (draw, picking, win->obj coordinates, ..).

Hence Scene + Group are now implementing Container
and reuse code via TreeTool and a Shape.Visitor*.

This will allow further simplification of user code.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/graphui/classes/com/jogamp/graph/ui/layout/GridLayout.java b/src/graphui/classes/com/jogamp/graph/ui/layout/GridLayout.java
new file mode 100644
index 000000000..bd2fd2d76
--- /dev/null
+++ b/src/graphui/classes/com/jogamp/graph/ui/layout/GridLayout.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright 2010-2023 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.graph.ui.layout;
+
+import com.jogamp.graph.ui.Group;
+import com.jogamp.graph.ui.Shape;
+import com.jogamp.graph.ui.Group.Layout;
+
+public class GridLayout implements Group.Layout {
+    private final int columns;
+    private final float padX, padY;
+
+    /**
+     *
+     * @param columns [1..inf)
+     * @param padX
+     * @param padY
+     */
+    public GridLayout(final int columns, final float padX, final float padY) {
+        this.columns = Math.max(1, columns);
+        this.padX = padX;
+        this.padY = padY;
+    }
+
+    @Override
+    public void layout(final Group g) {
+        int col = 0;
+        float x=0;
+        float y=0;
+        for(final Shape s : g.getShapes()) {
+            s.moveTo(x, y, 0);
+            if( col + 1 == columns ) {
+                col = 0;
+                // row++;
+                x  = 0;
+                y -= padY;
+            } else {
+                col++;
+                x += padX;
+            }
+        }
+    }
+}
+