From ead24cc30480f3942dc44beed84fe64ff01c8e88 Mon Sep 17 00:00:00 2001
From: FrozenCow <frozencow@gmail.com>
Date: Tue, 8 Mar 2011 16:42:21 +0100
Subject: [PATCH] Added heightmap like combination for flatmap.

---
 src/main/java/org/dynmap/flat/FlatMap.java | 30 ++++++++++++++++++----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/src/main/java/org/dynmap/flat/FlatMap.java b/src/main/java/org/dynmap/flat/FlatMap.java
index a0adc02a..5cd52d54 100644
--- a/src/main/java/org/dynmap/flat/FlatMap.java
+++ b/src/main/java/org/dynmap/flat/FlatMap.java
@@ -1,6 +1,7 @@
 package org.dynmap.flat;
 
 import java.awt.Color;
+import java.awt.color.ColorSpace;
 import java.awt.image.BufferedImage;
 import java.awt.image.WritableRaster;
 import java.io.File;
@@ -69,7 +70,10 @@ public class FlatMap extends MapType {
 
         boolean rendered = false;
         BufferedImage im = new BufferedImage(t.size, t.size, BufferedImage.TYPE_INT_RGB);
-        WritableRaster r = im.getRaster();
+        WritableRaster raster = im.getRaster();
+        
+        float[] hsb = new float[4];
+        int[] pixel = new int[4];
 
         for (int x = 0; x < t.size; x++)
             for (int y = 0; y < t.size; y++) {
@@ -83,10 +87,26 @@ public class FlatMap extends MapType {
                 Color c = colors[0];
                 if (c == null)
                     continue;
-                r.setPixel(x, y, new int[] {
-                    c.getRed(),
-                    c.getGreen(),
-                    c.getBlue() });
+                
+                
+                Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), hsb);
+                
+                float normalheight = 64;
+                float below = Math.min(my, normalheight) / normalheight;
+                float above = 1.0f - Math.max(0, my - normalheight) / (128 - normalheight); 
+                
+                // Saturation will be changed when going higher.
+                hsb[1] *= above;
+                
+                // Brightness will change when going lower
+                hsb[2] *= below;
+                
+                int rgb = Color.HSBtoRGB(hsb[0], hsb[1], hsb[2]);
+                pixel[0] = (rgb&0xff0000) >> 16;
+                pixel[1] = (rgb&0x00ff00) >> 8;
+                pixel[2] = (rgb&0x0000ff)/* >> 0*/;
+                
+                raster.setPixel(x, y, pixel);
                 rendered = true;
             }