// $Id$
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <plib/ssg.h>
// return a sphere object as an ssgBranch
-ssgBranch *ssgMakeSphere( ssgSimpleState *state, double radius, int slices,
- int stacks ) {
+ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
+ double radius, int slices, int stacks,
+ ssgCallback predraw, ssgCallback postdraw )
+{
float rho, drho, theta, dtheta;
float x, y, z;
float s, t, ds, dt;
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 );
+ }
+
+ sgVec4 color;
+ sgSetVec4( color, 1.0, 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;
// 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 );
// glNormal3f( x*nsign, y*nsign, z*nsign );
sgSetVec3( vec3, x*nsign, y*nsign, z*nsign );
+ sgNormalizeVec3( vec3 );
nl->add( vec3 );
// glTexCoord2f(s,t-dt);
}
ssgLeaf *slice =
- new ssgVtxTable ( GL_TRIANGLE_STRIP, vl, nl, tl, NULL );
+ new ssgVtxTable ( GL_TRIANGLE_STRIP, vl, nl, tl, cl );
slice->setState( state );
+ slice->setCallback( SSG_CALLBACK_PREDRAW, predraw );
+ slice->setCallback( SSG_CALLBACK_POSTDRAW, postdraw );
sphere->addKid( slice );