From 2186d5f3f95cd74a070a490d899291648d58667a Mon Sep 17 00:00:00 2001
From: Steven Fuller <relnev@icculus.org>
Date: Sun, 1 Jul 2001 00:55:22 +0000
Subject: Initial revision

---
 3dc/sphere.c | 257 -----------------------------------------------------------
 1 file changed, 257 deletions(-)
 delete mode 100644 3dc/sphere.c

(limited to '3dc/sphere.c')

diff --git a/3dc/sphere.c b/3dc/sphere.c
deleted file mode 100644
index b5ef4bc..0000000
--- a/3dc/sphere.c
+++ /dev/null
@@ -1,257 +0,0 @@
-#include "3dc.h"
-#include "module.h"
-#include "inline.h"
-
-#include "sphere.h"
-
-#define UseLocalAssert Yes
-#include "ourasert.h"
-
-
-#define MakeVertex(o,x,y,z)	\
-{ \
-	o->vx=(x); \
-	o->vy=(y); \
-	o->vz=(z); \
-	o++; \
-}
-
-#define MakeFace(f,a,b,c) \
-{ \
-	f->v[0] = (a); \
-	f->v[1] = (b); \
-	f->v[2] = (c); \
-	f++; \
-}
-
-VECTORCH OctantVertex[(SPHERE_ORDER+1)*(SPHERE_ORDER+2)/2];
-VECTORCH SphereVertex[SPHERE_VERTICES];
-
-VECTORCH SphereRotatedVertex[SPHERE_VERTICES];
-VECTORCH SphereAtmosRotatedVertex[SPHERE_VERTICES];
-int SphereAtmosU[SPHERE_VERTICES];
-int SphereAtmosV[SPHERE_VERTICES];
-
-
-TRI_FACE SphereFace[SPHERE_FACES];
-int SphereVertexHeight[SPHERE_VERTICES];
-
-static void Generate_SphereOctant(void)
-{
-	int i,j;
-
-	VECTORCH *o = OctantVertex;
-
-	/* i=0, j=0 */
-	MakeVertex(o,0,0,SPHERE_RADIUS);
-
-	for (i=1; i<SPHERE_ORDER; i++)
-	{
-		int cosPhi, sinPhi;
-		{
-			int phi = 1024*i/SPHERE_ORDER;
-			cosPhi = GetCos(phi);
-			sinPhi = GetSin(phi);
-		}
-
-		/* 0<i<n, j=0 */
-		/* => cosTheta = 1, sinTheta = 0 */
-		MakeVertex(o,sinPhi,0,cosPhi);
-
-		for (j=1; j<i; j++)
-		{
-			int cosTheta, sinTheta;
-			{
-				int theta = 1024*j/i;
-				cosTheta = GetCos(theta);
-				sinTheta = GetSin(theta);
-			}
-
-			/* 0<i<n, 0<j<i */
-			MakeVertex(o,MUL_FIXED(cosTheta,sinPhi),MUL_FIXED(sinTheta,sinPhi),cosPhi);
-		}
-
-		/* 0<i<n, j=i */
-		MakeVertex(o,0,sinPhi,cosPhi);
-	}
-
-	/* i=n, j=0 */
-	MakeVertex(o,SPHERE_RADIUS,0,0);
-			
-	for (j=1; j<SPHERE_ORDER; j++)
-	{
-		int cosTheta, sinTheta;
-		{
-			int theta = 1024*j/SPHERE_ORDER;
-			cosTheta = GetCos(theta);
-			sinTheta = GetSin(theta);
-		}
-		/* i=n, 0<j<i */
-		MakeVertex(o,cosTheta,sinTheta,0);
-	}
-
-	/* i=n, j=i */
-	MakeVertex(o,0,SPHERE_RADIUS,0);
-}
-
-void Generate_Sphere(void)
-{
-	/* first generate vertices */
-	{
-		int i,j;
-		VECTORCH *v = SphereVertex;
-		VECTORCH *o = OctantVertex;
-				
-		Generate_SphereOctant();
-
-		/* north pole */
-		*v++ = *o;
-		for (i=0; ++i<=SPHERE_ORDER;)
-		{
-			o += i;
-			/* 1st Quadrant */
-			for (j=i; --j>=0; o++, v++)
-			{
-				*v = *o;
-			}
-			/* 2nd Quadrant */
-			for (j=i; --j>=0; o--, v++)
-			{
-				v->vx = -o->vx;
-				v->vy = o->vy;
-				v->vz = o->vz;
-			}
-			/* 3rd Quadrant */
-			for (j=i; --j>=0; o++, v++)
-			{
-				v->vx = -o->vx;
-				v->vy = -o->vy;
-				v->vz = o->vz;
-			}
-			/* 4th Quadrant */
-			for (j=i; --j>=0; o--, v++)
-			{
-				v->vx = o->vx;
-				v->vy = -o->vy;
-				v->vz = o->vz;
-			}
-		}
-		for (; --i>1;)
-		{
-			o -= i;
-			/* 5th Quadrant */
-			for (j=i; --j>0; o++, v++)
-			{
-				v->vx = o->vx;
-				v->vy = o->vy;
-				v->vz = -o->vz;
-			}
-			/* 6th Quadrant */
-			for (j=i; --j>0; o--, v++)
-			{
-				v->vx = -o->vx;
-				v->vy = o->vy;
-				v->vz = -o->vz;
-			}
-			/* 7th Quadrant */
-			for (j=i; --j>0; o++, v++)
-			{
-				v->vx = -o->vx;
-				v->vy = -o->vy;
-				v->vz = -o->vz;
-			}
-			/* 8th Quadrant */
-			for (j=i; --j>0; o--, v++)
-			{
-				v->vx = o->vx;
-				v->vy = -o->vy;
-				v->vz = -o->vz;
-			}
-		}
-		o--;
-		/* south pole */
-		v->vx = -o->vx;
-		v->vy = -o->vy;
-		v->vz = -o->vz;
-	}
-	
-	/* now generate face data */
-	{
-		TRI_FACE *f = SphereFace;
-		int kv,kw,ko,kv0,kw0,i,j;
-
-		kv = 0, kw = 1;
-
-		for(i=0; i<SPHERE_ORDER; i++)
-		{
-			kv0 = kv, kw0 = kw;
-			for (ko=1; ko<=3; ko++)
-			{
-				for (j=i;; j--)
-				{
-					MakeFace(f,kv,kw,++kw);
-					if (j==0) break;
-					MakeFace(f,kv,kw,++kv);
-				}
-			}
-			for (j=i;;j--)
-			{
-				if (j==0)
-				{
-					MakeFace(f,kv0,kw,kw0);
-					kv++;
-					kw++;
-					break;
-				}
-				MakeFace(f,kv,kw,++kw);
-				if (j==1)
-				{
-					MakeFace(f,kv,kw,kv0);
-				}
-				else MakeFace(f,kv,kw,++kv);
-			}
-		}
-		for(; --i>=0;)
-		{
-			kv0=kv,kw0=kw;
-			for(ko=5;ko<=7;ko++)
-			{
-				for (j=i;; j--)
-				{
-					MakeFace(f,kv,kw,++kv);
-					if (j==0) break;	 
-					MakeFace(f,kv,kw,++kw);
-				}
-			}
-			for (j=i;;j--)
-			{
-				if (j==0)
-				{
-					MakeFace(f,kv,kw0,kv0);
-					kv++;
-					kw++;
-					break;
-				}
-				MakeFace(f,kv,kw,++kv);
-				if (j==1)
-				{
-					MakeFace(f,kv,kw,kw0);
-				}
-				else MakeFace(f,kv,kw,++kw);
-			}
-		}
-	}
-	{
-		int i;
-		VECTORCH *vSphere = SphereVertex;
-		for(i=0;i<SPHERE_VERTICES;i++,vSphere++)
-		{
-//			int radius = vSphere->vx*vSphere->vx+vSphere->vz*vSphere->vz;
-//			if (radius<16384) radius = 16384;
-
-//			SphereAtmosU[i] = DIV_FIXED(ArcCos(vSphere->vy)*32*128*8,radius);
-			SphereAtmosV[i] = ArcCos(vSphere->vy)*32*128*SPHERE_TEXTURE_WRAP;//*8;
-			SphereAtmosU[i] = ArcTan(vSphere->vz,vSphere->vx)*16*128*SPHERE_TEXTURE_WRAP;//*8;
-		}
-	}
-}
-- 
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