From be1b80365652fc47bae22ef3ee25a6415266e34c Mon Sep 17 00:00:00 2001
From: Philip Rosedale <philip@coffeeandpower.com>
Date: Tue, 7 May 2013 10:41:39 -0700
Subject: [PATCH] Noise Test function, adjust chat position

---
 interface/src/Avatar.cpp |  4 ++--
 interface/src/Util.cpp   | 23 +++++++++++++++++++++++
 interface/src/Util.h     |  2 ++
 interface/src/main.cpp   |  2 ++
 4 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/interface/src/Avatar.cpp b/interface/src/Avatar.cpp
index b658096ea8..1983de906a 100644
--- a/interface/src/Avatar.cpp
+++ b/interface/src/Avatar.cpp
@@ -62,8 +62,8 @@ bool usingBigSphereCollisionTest = true;
 
 char iris_texture_file[] = "resources/images/green_eye.png";
 
-float chatMessageScale = 0.001;
-float chatMessageHeight = 0.4;
+float chatMessageScale = 0.0015;
+float chatMessageHeight = 0.45;
 
 vector<unsigned char> iris_texture;
 unsigned int iris_texture_width = 512;
diff --git a/interface/src/Util.cpp b/interface/src/Util.cpp
index e70aabcd2a..58cf1f61ad 100644
--- a/interface/src/Util.cpp
+++ b/interface/src/Util.cpp
@@ -11,6 +11,7 @@
 #include <cstring>
 
 #include <glm/glm.hpp>
+#include <glm/gtc/noise.hpp>
 #include <glm/gtc/quaternion.hpp>
 #include <SharedUtil.h>
 
@@ -112,6 +113,28 @@ void drawVector(glm::vec3 * vector) {
 
 }
 
+//  Render a 2D set of squares using perlin/fractal noise
+void noiseTest(int w, int h) {
+    const float CELLS = 100;
+    float xStep = (float) w / CELLS;
+    float yStep = (float) h / CELLS;
+    glBegin(GL_QUADS);    
+    for (float x = 0; x < (float)w; x += xStep) {
+        for (float y = 0; y < (float)h; y += yStep) {
+            //  Generate a vector varying between 0-1 corresponding to the screen location 
+            glm::vec2 position(x / (float) w, y / (float) h);
+            //  Set the cell color using the noise value at that location
+            float color = glm::simplex(position);
+            glColor4f(color, color, color, 1.0);
+            glVertex2f(x, y);
+            glVertex2f(x + xStep, y);
+            glVertex2f(x + xStep, y + yStep);
+            glVertex2f(x, y + yStep);
+        }
+    }
+    glEnd();
+}
+    
 void render_world_box() {
     //  Show edge of world 
     glDisable(GL_LIGHTING);
diff --git a/interface/src/Util.h b/interface/src/Util.h
index b81edd8c87..d4a6ba6b03 100644
--- a/interface/src/Util.h
+++ b/interface/src/Util.h
@@ -40,6 +40,8 @@ void drawtext(int x, int y, float scale, float rotate, float thick, int mono,
 void drawvec3(int x, int y, float scale, float rotate, float thick, int mono, glm::vec3 vec, 
               float r=1.0, float g=1.0, float b=1.0);
 
+void noiseTest(int w, int h);
+
 void drawVector(glm::vec3* vector);
 
 float angleBetween(glm::vec3 * v1, glm::vec3 * v2); 
diff --git a/interface/src/main.cpp b/interface/src/main.cpp
index a4ef86024b..a341835206 100644
--- a/interface/src/main.cpp
+++ b/interface/src/main.cpp
@@ -893,6 +893,8 @@ void displayOverlay() {
         audioScope.render();
         #endif
 
+       // noiseTest(WIDTH, HEIGHT);
+    
         if (displayHeadMouse && !::lookingInMirror && statsOn) {
             //  Display small target box at center or head mouse target that can also be used to measure LOD
             glColor3f(1.0, 1.0, 1.0);