// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA 02111-1307, USA.
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef __CYGWIN__
+#include <ieeefp.h>
+#endif
#include <simgear/compiler.h>
+#include <simgear/constants.h>
+#include <simgear/debug/logstream.hxx>
-#include STL_IOSTREAM
+#include <iostream>
-#include <plib/sg.h>
-#include <plib/ssg.h>
-
-SG_USING_STD(cout);
-SG_USING_STD(endl);
+#include <osg/Node>
+#include <osg/Geometry>
+#include <osg/Geode>
+#include <osg/Array>
// return a sphere object as an ssgBranch
-ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,
- double radius, int slices, int stacks,
- ssgCallback predraw, ssgCallback postdraw )
+osg::Node*
+SGMakeSphere(double radius, int slices, int stacks)
{
- float rho, drho, theta, dtheta;
- float x, y, z;
+ float rho, drho, dtheta;
float s, t, ds, dt;
int i, j, imin, imax;
float nsign = 1.0;
- ssgBranch *sphere = new ssgBranch;
- sgVec2 vec2;
- sgVec3 vec3;
+ osg::Geode* geode = new osg::Geode;
drho = SGD_PI / (float) stacks;
- dtheta = 2.0 * SGD_PI / (float) slices;
+ dtheta = SGD_2PI / (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
/* build slices as quad strips */
for ( i = imin; i < imax; i++ ) {
- ssgVertexArray *vl = new ssgVertexArray();
- ssgNormalArray *nl = new ssgNormalArray();
- ssgTexCoordArray *tl = new ssgTexCoordArray();
+ osg::Geometry* geometry = new osg::Geometry;
+ osg::Vec3Array* vl = new osg::Vec3Array;
+ osg::Vec3Array* nl = new osg::Vec3Array;
+ osg::Vec2Array* tl = new osg::Vec2Array;
rho = i * drho;
s = 0.0;
for ( j = 0; j <= slices; j++ ) {
- theta = (j == slices) ? 0.0 : j * dtheta;
- x = -sin(theta) * sin(rho);
- y = cos(theta) * sin(rho);
- z = nsign * cos(rho);
+ double theta = (j == slices) ? 0.0 : j * dtheta;
+ double x = -sin(theta) * sin(rho);
+ double y = cos(theta) * sin(rho);
+ double z = nsign * cos(rho);
// glNormal3f( x*nsign, y*nsign, z*nsign );
- sgSetVec3( vec3, x*nsign, y*nsign, z*nsign );
- sgNormalizeVec3( vec3 );
- nl->add( vec3 );
+ osg::Vec3 normal(x*nsign, y*nsign, z*nsign);
+ normal.normalize();
+ nl->push_back(normal);
// glTexCoord2f(s,t);
- sgSetVec2( vec2, s, t );
- tl->add( vec2 );
+ tl->push_back(osg::Vec2(s, t));
// glVertex3f( x*radius, y*radius, z*radius );
- sgSetVec3( vec3, x*radius, y*radius, z*radius );
- vl->add( vec3 );
+ vl->push_back(osg::Vec3(x*radius, y*radius, z*radius));
x = -sin(theta) * sin(rho+drho);
y = cos(theta) * sin(rho+drho);
z = nsign * cos(rho+drho);
// glNormal3f( x*nsign, y*nsign, z*nsign );
- sgSetVec3( vec3, x*nsign, y*nsign, z*nsign );
- sgNormalizeVec3( vec3 );
- nl->add( vec3 );
+ normal = osg::Vec3(x*nsign, y*nsign, z*nsign);
+ normal.normalize();
+ nl->push_back(normal);
// glTexCoord2f(s,t-dt);
- sgSetVec2( vec2, s, t-dt );
- tl->add( vec2 );
+ tl->push_back(osg::Vec2(s, t-dt));
s += ds;
// glVertex3f( x*radius, y*radius, z*radius );
- sgSetVec3( vec3, x*radius, y*radius, z*radius );
- vl->add( vec3 );
+ vl->push_back(osg::Vec3(x*radius, y*radius, z*radius));
}
- ssgLeaf *slice =
- new ssgVtxTable ( GL_TRIANGLE_STRIP, vl, nl, tl, cl );
-
- if ( vl->getNum() != nl->getNum() ) {
- cout << "bad sphere1" << endl;
+ if ( vl->size() != nl->size() ) {
+ SG_LOG( SG_EVENT, SG_ALERT, "bad sphere1");
exit(-1);
}
- if ( vl->getNum() != tl->getNum() ) {
- cout << "bad sphere2" << endl;
+ if ( vl->size() != tl->size() ) {
+ SG_LOG( SG_EVENT, SG_ALERT, "bad sphere2");
exit(-1);
}
- slice->setState( state );
- slice->setCallback( SSG_CALLBACK_PREDRAW, predraw );
- slice->setCallback( SSG_CALLBACK_POSTDRAW, postdraw );
- sphere->addKid( slice );
+ // colors
+ osg::Vec4Array* cl = new osg::Vec4Array;
+ cl->push_back(osg::Vec4(1, 1, 1, 1));
+
+ geometry->setUseDisplayList(false);
+ geometry->setVertexArray(vl);
+ geometry->setNormalArray(nl);
+ geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
+ geometry->setTexCoordArray(0, tl);
+ geometry->setColorArray(cl);
+ geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
+ geometry->addPrimitiveSet(new osg::DrawArrays(GL_TRIANGLE_STRIP, 0, vl->size()));
+ geode->addDrawable(geometry);
t -= dt;
}
- return sphere;
+ return geode;
}