void display() {
glClear( GL_COLOR_BUFFER_BIT );
Origami.draw( View.eyePosition() );
if( State.drawAxis ) {
glBegin(GL_LINES);
glColor3ub(255, 0, 0);
glVertex3d(-20.0,0.0,0.0);
glColor3ub(255,255,255);
glVertex3d( 0.0,0.0,0.0);
glVertex3d(0.0,0.0,0.0);
glColor3ub(255, 0, 0);
glVertex3d( 20.0,0.0,0.0);
glColor3ub( 0,255, 0);
glVertex3d(0.0,-20.0,0.0);
glColor3ub(255,255,255);
glVertex3d(0.0, 0.0,0.0);
glVertex3d(0.0,0.0,0.0);
glColor3ub( 0,255, 0);
glVertex3d(0.0, 20.0,0.0);
glColor3ub( 0, 0,255);
glVertex3d(0.0,0.0,-20.0);
glColor3ub(255,255,255);
glVertex3d(0.0,0.0, 0.0);
glVertex3d(0.0,0.0,0.0);
glColor3ub( 0, 0,255);
glVertex3d(0.0,0.0, 20.0);
glEnd();
}
Origami.drawAdjust();
glutSwapBuffers();
}
void folding(Vector source, Vector destination)
{
// Origami.listVertex();
// printf("\n");
// source.print();
View.world2window( source, Cursor3D.x, Cursor3D.y, Cursor3D.z );
Line line = View.cursorLine( Cursor3D.x, Cursor3D.y );
// line.print();
source = Origami.pickVertex( line );
glutWarpPointer( Cursor3D.x, Cursor3D.y );
// destination.print();
// printf("\n");
Origami.moveVertex( destination, View.eyePosition(), false);
View.world2window( destination, Cursor3D.x, Cursor3D.y, Cursor3D.z );
Origami.releaseVertex();
}
void timer(int value) {
bool redisplay = false;
// modify view
double angle = 1.5/double(State.fps);
double delta = 1.5/double(State.fps);
double deltaZ = 0.015/double(State.fps);
double scale = 1.0+1.5/double(State.fps);
if( Special.down(GLUT_KEY_LEFT) ) { View.twistLeft( angle ); redisplay=true; }
if( Special.down(GLUT_KEY_RIGHT) ) { View.twistRight( angle ); redisplay=true; }
if( Special.down(GLUT_KEY_UP) ) { View.zoom( 1.0/scale ); redisplay=true; }
if( Special.down(GLUT_KEY_DOWN) ) { View.zoom( scale ); redisplay=true; }
if( Key.down('4') || State.inRotation ) { View.rotateLeft( angle ); redisplay=true; } // need numlock on
if( Key.down('6') ) { View.rotateRight( angle ); redisplay=true; }
if( Key.down('8') ) { View.rotateUp( angle ); redisplay=true; }
if( Key.down('2') ) { View.rotateDown( angle ); redisplay=true; }
if( Key.down('1') ) { View.slideLeft( delta ); redisplay=true; }
if( Key.down('3') ) { View.slideRight( delta ); redisplay=true; }
if( Key.down('5') ) { View.lookAt( 0, 0, 40, 0, 0, 0, 0, 1, 0 ); redisplay=true; }
// renew folding
if( State.inFolding ) {
bool inBending = false;
if( Key.down('m') ) {
Cursor3D.z -= deltaZ;
inBending = true;
}else if( Key.down('n') ) {
Cursor3D.z += deltaZ;
}
Vector destination;
View.window2world( Cursor3D.x, Cursor3D.y, Cursor3D.z, destination );
Origami.moveVertex( destination, View.eyePosition(), inBending );
View.world2window( destination, Cursor3D.x, Cursor3D.y, Cursor3D.z );
redisplay = true;
}else if( State.inAnimation ) {
if( Origami.play( State.fps ) ) State.inAnimation = false;
redisplay = true;
}
if(redisplay) glutPostRedisplay();
glutTimerFunc(1000/State.fps, timer, 0);
}