First quick hack at panel shading.

[simgear.git] / simgear / sky / sphere.cxx

diff --git a/simgear/sky/sphere.cxx b/simgear/sky/sphere.cxx
index c4f1d7afb20b77d02b44c11a9d52d1d769379a71..21e25be41ac3e6e5c5f7754e502e28cc4c10af47 100644 (file)
--- a/simgear/sky/sphere.cxx
+++ b/simgear/sky/sphere.cxx
@@ -22,12 +22,21 @@
 // $Id$
 
 
-#include <plib/ssg.h>
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <simgear/compiler.h>
+
+#include STL_IOSTREAM
 
+#include <plib/ssg.h>
+#include <simgear/constants.h>
 
 // return a sphere object as an ssgBranch
 ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
-                         double radius, int slices, int stacks )
+                         double radius, int slices, int stacks,
+                         ssgCallback predraw, ssgCallback postdraw )
 {
     float rho, drho, theta, dtheta;
     float x, y, z;
@@ -38,26 +47,8 @@ ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
     sgVec2 vec2;
     sgVec3 vec3;
 
-    // handle cl whether it is preinitialized or not
-    if ( cl == NULL ) {
-       // create a new array if needed
-       cl = new ssgColourArray( 1 );
-    }
-
-    sgVec3 color;
-    sgSetVec3( color, 1.0, 1.0, 1.0 );
-
-    if ( cl->getNum() > 1 ) {
-       cl->removeAll();
-       cl->add( color );
-    } else if ( cl->getNum() == 0 ) {
-       cl->add( color );
-    } else {
-       // accept value as given to us in
-    }
-
-    drho = M_PI / (float) stacks;
-    dtheta = 2.0 * M_PI / (float) slices;
+    drho = FG_PI / (float) stacks;
+    dtheta = 2.0 * FG_PI / (float) slices;
 
     /* texturing: s goes from 0.0/0.25/0.5/0.75/1.0 at +y/+x/-y/-x/+y
        axis t goes from -1.0/+1.0 at z = -radius/+radius (linear along
@@ -86,10 +77,11 @@ ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
 
            // glNormal3f( x*nsign, y*nsign, z*nsign );
            sgSetVec3( vec3, x*nsign, y*nsign, z*nsign );
+           sgNormalizeVec3( vec3 );
            nl->add( vec3 );
 
            // glTexCoord2f(s,t);
-           sgSetVec2( vec2, 2, t );
+           sgSetVec2( vec2, s, t );
            tl->add( vec2 );
 
            // glVertex3f( x*radius, y*radius, z*radius );
@@ -102,6 +94,7 @@ ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
 
            // glNormal3f( x*nsign, y*nsign, z*nsign );
            sgSetVec3( vec3, x*nsign, y*nsign, z*nsign );
+           sgNormalizeVec3( vec3 );
            nl->add( vec3 );
 
            // glTexCoord2f(s,t-dt);
@@ -116,7 +109,18 @@ ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
 
        ssgLeaf *slice = 
            new ssgVtxTable ( GL_TRIANGLE_STRIP, vl, nl, tl, cl );
+
+       if ( vl->getNum() != nl->getNum() ) {
+           cout << "bad sphere1\n";
+           exit(-1);
+       }
+       if ( vl->getNum() != tl->getNum() ) {
+           cout << "bad sphere2\n";
+           exit(-1);
+       }
        slice->setState( state );
+       slice->setCallback( SSG_CALLBACK_PREDRAW, predraw );
+       slice->setCallback( SSG_CALLBACK_POSTDRAW, postdraw );
 
        sphere->addKid( slice );