From 47c652a150286e931174daec85678cc4be77be42 Mon Sep 17 00:00:00 2001
From: josh <josh@5bef9df8-b654-44bb-925b-0ff18baa8f8c>
Date: Thu, 13 Nov 2008 17:27:59 +0000
Subject: [PATCH] updating distances for each logo each frame, rotating based
 on viewer position

git-svn-id: svn://anubis/dwscr/trunk@101 5bef9df8-b654-44bb-925b-0ff18baa8f8c
---
 ss/LightBounce.cc | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/ss/LightBounce.cc b/ss/LightBounce.cc
index c6071d4..c635732 100644
--- a/ss/LightBounce.cc
+++ b/ss/LightBounce.cc
@@ -110,10 +110,13 @@ LightBounce::LightBounce(SSMain * _SSMain) : SSMode(_SSMain)
         }
         y += box_stride;
     }
+
+    glPushAttrib(GL_POLYGON_BIT);   /* store CULL_FACE settings */
 }
 
 LightBounce::~LightBounce()
 {
+    glPopAttrib();
     int sz = m_boxes.size();
     for (int i = 0; i < sz; i++)
         delete m_boxes[i];
@@ -127,14 +130,25 @@ void LightBounce::update()
     int numMonitors = m_SSMain->getNumMonitors();
     int width = m_SSMain->getWidth();
     int height = m_SSMain->getHeight();
+
+    /* update the viewer position */
+    double angle = m_elapsed/3700.0f;
+    double viewer_dist = SIZE * ZOOM;
+    float viewer_x = viewer_dist * cos(angle);
+    float viewer_z = viewer_dist * sin(angle);
+    float viewer_y = SIZE * ZOOM * 2.0 / 3.0;
+
+    for (int i = 0, sz = m_boxes.size(); i < sz; i++)
+    {
+        m_boxes[i]->updateDist(viewer_x, viewer_y, viewer_z);
+    }
+
     for (int i = 0; i < numMonitors; i++)
     {
         glViewport(i*width/numMonitors, 0, width/numMonitors, height);
         glLoadIdentity();
-        gluLookAt(0, SIZE * ZOOM * 2.0 / 3.0, SIZE * ZOOM, 0, 0, 0, 0, 1, 0);
-        glRotatef(m_elapsed/66.0f, 0, 1, 0);
-        int sz = m_boxes.size();
-        for (int i = 0; i < sz; i++)
+        gluLookAt(viewer_x, viewer_y, viewer_z, 0, 0, 0, 0, 1, 0);
+        for (int i = 0, sz = m_boxes.size(); i < sz; i++)
         {
             m_boxes[i]->draw();
         }