Updated copyright

[sixth-3d.git] / src / main / java / eu / svjatoslav / sixth / e3d / renderer / raster / shapes / basic / GlowingPoint.java

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/basic/GlowingPoint.java b/src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/basic/GlowingPoint.java
index 29cad63..94c245b 100644 (file)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/basic/GlowingPoint.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/basic/GlowingPoint.java
@@ -1,10 +1,10 @@
 /*
- * Sixth - System for data storage, computation, exploration and interaction.
- * Copyright ©2012-2016, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- * 
+ * Sixth 3D engine. Copyright ©2012-2019, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 3 of the GNU Lesser General Public License
  * or later as published by the Free Software Foundation.
+ *
  */
 
 package eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic;
@@ -13,9 +13,14 @@ import eu.svjatoslav.sixth.e3d.geometry.Point3D;
 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
 import eu.svjatoslav.sixth.e3d.renderer.raster.texture.Texture;
 
+import java.util.Collections;
+import java.util.Set;
+import java.util.WeakHashMap;
+
 public class GlowingPoint extends ForwardOrientedTexture {
 
     private static final int TEXTURE_SIZE = 50;
+    private static final Set<GlowingPoint> glowingPoints = Collections.newSetFromMap(new WeakHashMap<>());
     private final Color color;
 
     public GlowingPoint(final Point3D point, final double pointSize,
@@ -23,11 +28,24 @@ public class GlowingPoint extends ForwardOrientedTexture {
         super(point, pointSize, getTexture(color));
         this.color = color;
 
-        getTexture(color);
+        synchronized (glowingPoints) {
+            glowingPoints.add(this);
+        }
+    }
+
+    private static Texture getTexture(final Color color) {
+        // attempt to reuse texture from existing glowing point of the same color
+        synchronized (glowingPoints) {
+            for (GlowingPoint glowingPoint : glowingPoints)
+                if (color.equals(glowingPoint.color))
+                    return glowingPoint.texture;
+        }
 
+        // existing texture not found, creating new one
+        return createTexture(color);
     }
 
-    public static Texture getTexture(final Color color) {
+    private static Texture createTexture(final Color color) {
         final Texture texture = new Texture(TEXTURE_SIZE, TEXTURE_SIZE, 1);
         for (int x = 0; x < TEXTURE_SIZE; x++)
             for (int y = 0; y < TEXTURE_SIZE; y++) {