//Given a single face, draw 3 quads as selection targets for the 3 vertexes of the face.
void SubdivScene::drawQuads(Face* f) {
Vec centre;
std::vector<Vertex*> vertexList;
for( Face::iterator itr = f->begin(); !itr.isDone(); ++itr) {
vertexList.push_back(&*itr);
centre = centre + itr->getData().p;
}
GLuint i = 0;
for( Face::iterator itr = f->begin(); !itr.isDone(); ++itr) {
glLoadName(i);
glBegin(GL_QUADS);
Vec v = itr->getData().p;
Vec next = (v + vertexList[ ((i + 1) % vertexList.size() )]->getData().p ) / 2;
Vec prev = (v + vertexList[ ((i + vertexList.size()- 1) % vertexList.size() )]->getData().p ) / 2;
prev.print();
glVertex3f( v.x, v.y, v.z );
glVertex3f( next.x, next.y, next.z);
glVertex3f(centre.x, centre.y, centre.z);
glVertex3f(prev.x, prev.y, prev.z);
glEnd();
i++;
}
}
bool SubdivScene::repositionSelectedVertex(int x, int y) {
if (!selectedVertex)
return false;
printf("Repositioning vertex, (%i, %i)...\n", x,y);
//In the plane perpendicular to camera->look, and through which the vertex passes,
//move vertex from where it is to where the mouse is
//Use current vertex position to calculate the center of the screen
Vec camPos = camera->getPos();
Vec vPos = selectedVertex->getData().p;
Vec diff = vPos - camPos;
Vec look = camera->getLook().normalize();
float cosAngle = sqrt(diff.normalize().dot(look));
float lookLength = diff.length()*cosAngle;
Vec centreDiff = look*lookLength;
Vec diffInPlane = vPos - (camPos + centreDiff);
printf(" diffInPlane is"); diffInPlane.print();
printf(" Cam pos is"); camPos.print();
float anglex = (x - Globals::getWidth()/2)*Globals::getFovx() * Globals::PI/180/Globals::getWidth();
float angley = (y - Globals::getHeight()/2)*Globals::getFovy() * Globals::PI/180/Globals::getHeight();
float hLength = tan(anglex)*centreDiff.length();
float vLength = tan(angley)*centreDiff.length();
printf(" anglex is %f and angley is %f, fovx is %f\n", anglex, angley, Globals::getFovx());
printf(" hLength is %f and vLength is %f, hrat is %i\n", hLength, vLength, x - Globals::getWidth()/2);
//calculate the shifts in the horiz and vertical directions
Vec right = camera->getLook().cross(camera->getUp()).normalize()*hLength;
Vec up = camera->getUp().normalize()*vLength;
printf(" Right is"); right.print();
printf(" up is"); up.print();
Vec newPos = vPos + right + up - diffInPlane;
selectedVertex->getData().p = newPos;
printf(" Old position was (%f, %f, %f)\n", vPos.x, vPos.y, vPos.z);
printf(" New position is (%f, %f, %f)\n", newPos.x, newPos.y, newPos.z);
redrawRequired = true;
}
int main() {
// ---------------------------------------------------
// initialize v1 with 10 values... the multiples of 5
Vec<int> v1( 10, 0 );
Vec<int>::size_type i;
for ( i = 0; i < v1.size(); i++) {
v1[i] = 5 * i;
}
cout << "v1.size() = " << v1.size() << ". Should be 10.\n";
cout << "Contents of v1 (multiples of 5):";
for ( i = 0; i<v1.size(); ++i ) {
cout << " " << v1[i];
}
cout << endl;
// --------------------------------------------------------------------------
// make v2 be a copy of v1, but then overwrite the 2nd half with the 1st half
Vec<int> v2( v1 );
v2[ 9 ] = v2[ 0 ];
v2[ 8 ] = v2[ 1 ];
v2[ 7 ] = v2[ 2 ];
v2[ 6 ] = v2[ 3 ];
v2[ 5 ] = v2[ 4 ];
cout << "Contents of v1 (still multiples of 5):";
for ( i = 0; i<v1.size(); ++i )
cout << " " << v1[i];
cout << endl;
cout << "Contents of v2 (now palindrome):";
for ( i = 0; i<v2.size(); ++i )
cout << " " << v2[i];
cout << endl;
// ------------------------------------------
// make v3 be a copy of v2, but then clear it
Vec<int> v3;
v3 = v2;
v3.clear();
cout << "\nAfter copying v2 to v3 and clearing v3, v2.size() = "
<< v2.size() << " and v3.size() = " << v3.size() << endl;
cout << "Contents of v2 (should be unchanged):";
for ( i = 0; i<v2.size(); ++i ) {
cout << " " << v2[i];
}
cout << endl;
// --------------
// test push back
cout << "\nNow testing push_back. Adding 3, 6, 9 to v2:\n";
v2.push_back( 3 );
v2.push_back( 6 );
v2.push_back( 9 );
cout << "v2 is now: \n";
for ( i = 0; i<v2.size(); ++i ) {
cout << " " << v2[i];
}
cout << endl;
// -----------
// test resize
v1.resize(20,100);
cout << "\nNow testing resize. Resizing v1 to have 20 elements and v2 to have 2 elements\n";
cout << "v1 is now (should have 100s at the end): \n";
for ( i = 0; i<v1.size(); ++i )
cout << " " << v1[i];
cout << endl;
v2.resize(2,100);
cout << "v2 is now: \n";
for ( i = 0; i<v2.size(); ++i )
cout << " " << v2[i];
cout << endl;
// ------------------------
// test of a vec of doubles
cout << "\nStarting from an empty vector, z, of doubles and doing\n"
<< "5 push_backs\n";
Vec<double> z;
for ( i = 0; i<5; ++i )
z.push_back( sqrt( double(10*(i+1)) ));
cout << "Contents of vector z: ";
for ( Vec<double>::size_type j = 0; j < z.size(); j++ )
cout << " " << z[j];
cout << endl;
// ADD MORE TEST CASES HERE
Vec<int> T;
T.push_back(6);
T.push_back(6);
T.push_back(6);
T.push_back(47);
T.push_back(7);
T.push_back(8);
T.push_back(426);
cout << "T should contain 6 6 6 47 7 8 426" << endl;
cout<< "T: ";
for(int i =0; i < T.size(); ++i){
cout << T[i] << " ";
}
cout << endl;
remove_matching_elements(T,6);
cout << "Now T should contain 47 7 8 426" << endl;
cout << "T:";
for(int i =0; i < T.size(); ++i){
cout << T[i] << " ";
}
Vec<int> Q;
Q.push_back(8);
Q.push_back(1);
Q.push_back(47);
Q.push_back(47);
Q.push_back(7);
Q.push_back(47);
Q.push_back(426);
cout << "Q should contain 8 1 47 47 7 47 426" << endl;
cout<< "Q: ";
for(int i =0; i < Q.size(); ++i){
cout << Q[i] << " ";
}
cout << endl;
remove_matching_elements(Q,47);
cout << "Now Q should contain 8 1 7 426" << endl;
cout << "Q:";
for(int i =0; i < Q.size(); ++i){
cout << Q[i] << " ";
}
Vec<int> X;
X.push_back(8);
X.push_back(1);
X.push_back(47);
X.push_back(47);
X.push_back(7);
X.push_back(47);
X.push_back(426);
X.print();
remove_matching_elements(X, 426);
X.print();
Vec<int> LOOP;
for(int i =0; i<100; ++i){
LOOP.push_back(i);
for(int j = 0; j< 5; j++){
LOOP.push_back(i+j);
}
}
LOOP.print();
remove_matching_elements(LOOP, 12);
LOOP.print();
return 0;
}