From b32c086a9b9deed4c34ade6e2447861a9c4bfc46 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Mon, 24 Mar 2008 12:35:48 +0000
Subject: moved the sphere into the vertex array

---
 src/core/model.cc | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 src/core/model.h  |  4 +++
 2 files changed, 81 insertions(+), 5 deletions(-)

(limited to 'src/core')

diff --git a/src/core/model.cc b/src/core/model.cc
index 9f135b4..6a82989 100644
--- a/src/core/model.cc
+++ b/src/core/model.cc
@@ -19,7 +19,9 @@
 namespace core
 {
 
-const float MAX_BOUNDS = 8192;
+//const float MAX_BOUNDS = 8192;
+const float MAX_BOUNDS = 16384;
+
 const float delta = 10e-10;
 
 /* ---------- core::VertexArray ------------------------------------  */
@@ -36,18 +38,88 @@ size_t VertexArray::vertex_index;
 
 void VertexArray::clear()
 {
+	vertex_index = 0;
+
 	// The VertexArray is only used by the client
 	if (!(Cvar::sv_dedicated && Cvar::sv_dedicated->value())) {
 		memset(vertex, 0, sizeof(vertex));
 		memset(vertex_color, 0, sizeof(vertex_color));
 		memset(vertex_normal, 0, sizeof(vertex_normal));
 
-		//memset(evertex, 0, sizeof(evertex));
-		//memset(evertex_normal, 0, sizeof(evertex_normal));
+		add_sphere();
 	}
 
-	vertex_index = 0;
-	//evertex_index = 0;
+	
+}
+
+void VertexArray::add_sphere()
+{
+	// load sphere vertices into the VertexArray
+
+	// build sin/cos table
+	float  *sintable;
+	float  *costable;
+
+	sintable = new float[SPHERESEGMENTS];
+	costable = new float[SPHERESEGMENTS];
+	float d = 2 * M_PI / (SPHERESEGMENTS-1);
+
+	for (int i=0; i < SPHERESEGMENTS; i++) {
+		sintable[i] = sin( d * (float) i );
+		costable[i] = cos ( d * (float) i );
+	}
+
+	// draw body
+	math::Color white(1.0f, 1.0f, 1.0f);
+	math::Vector3f v;
+	math::Vector3f n;
+
+	int count;
+
+	for (int j=0; j < SPHERESEGMENTS-1; j++) {
+		float r = sintable[j];
+		float r1 = sintable[j+1];
+
+		// glBegin
+		v = math::Vector3f(r, 0, costable[j]);
+		n = v;
+		n.normalize();
+		//normal(n);
+		//vertex(v);
+		add_vertex(v, n, white);
+
+		v = math::Vector3f(r1, 0, costable[j+1]);
+		n = v;
+		n.normalize();
+		//normal(n);
+		//vertex(v);
+		add_vertex(v, n, white);
+
+		count =2;
+
+		for (int i = SPHERESEGMENTS-1; i >= 0; i--) {
+			v = math::Vector3f(r*costable[i], r*sintable[i], costable[j]);
+			n = v;
+			n.normalize();
+			//normal(n);
+			//vertex(v);
+			add_vertex(v, n, white);
+			
+			v = math::Vector3f(r1*costable[i], r1*sintable[i], costable[j+1]);
+			n = v;
+			n.normalize();
+			//normal(n);
+			//vertex(v);
+			add_vertex(v, n, white);
+			count +=2;
+		}
+		// glEnd
+		
+	}
+
+	con_debug << "SPhere segment count " << count <<std::endl;
+	delete[] sintable;
+	delete[] costable;
 }
 
 void VertexArray::add_vertex(math::Vector3f const &v, math::Vector3f const &n, math::Color const &color) {
diff --git a/src/core/model.h b/src/core/model.h
index 51e9ca7..4fc4d97 100644
--- a/src/core/model.h
+++ b/src/core/model.h
@@ -25,6 +25,7 @@ namespace core
 
 /// size of the global vertex array - 32M
 const size_t VERTEXARRAYSIZE=65536*512;
+const int SPHERESEGMENTS=33;
 
 /// global vertex array
 class VertexArray
@@ -40,6 +41,9 @@ public:
 	static void clear();
 
 	static void add_vertex(math::Vector3f const &v, math::Vector3f const &n, math::Color const &color);
+
+private:
+	static void add_sphere();
 };
 
 /// a model triangle
-- 
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