Viewing a Model – Step 2

• The following code displays all the Polygon objects in a Union Of Primitive:

void drawUofP( const seObject &uofp ) {

seIterator polys( SE_DRM_CLS_POLYGON ), vertices( SE_DRM_CLS_VERTEX );

seObject poly, obj;

const SE_Fields *fp;

// not shown: getting the Colour and calling glColor3f()

polys.start( uofp );

while ( polys.next( &poly ) ) {

glBegin( GL_POLYGON );

vertices.start( poly );

while ( vertices.next( &obj ) ) {

obj.getComponent( SE_DRM_CLS_LSR_LOCATION_3D, &obj );

obj.getFields( &fp );

glVertex3f( fp->u.LSR_Location_3D.coordinate.x,

fp->u.LSR_Location_3D.coordinate.y,

fp->u.LSR_Location_3D.coordinate.z );

}

glEnd();

}

}

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