void Clipping::clipBottom(Coordinates& input, Coordinates& output){
if(output.size() > 0)
output.clear();
if(input.size() == 0)
return;
double clipY = m_w->minY;
input.push_back(input[0]);
for(unsigned int i = 0; i < input.size()-1; i++){
Coordinate c0 = input[i];
Coordinate c1 = input[i+1];
//Caso 1: out -> out
if(c0.y < clipY && c1.y < clipY){}
//Caso 2: in -> in
if(c0.y >= clipY && c1.y >= clipY)
output.push_back(c1);
double y = clipY;
double m = (c1.x-c0.x)/(c1.y-c0.y);
double x = m * (y-c0.y) + c0.x;
//Caso 3: in -> out
if(c0.y >= clipY && c1.y < clipY)
output.emplace_back(x,y);
//Caso 4: out -> in
if(c0.y < clipY && c1.y >= clipY){
output.emplace_back(x,y);
output.push_back(c1);
}
}
}
void Clipping::clipRight(Coordinates& input, Coordinates& output){
if(output.size() > 0)
output.clear();
if(input.size() == 0)
return;
double clipX = m_w->maxX;
input.push_back(input[0]);
for(unsigned int i = 0; i < input.size()-1; i++){
Coordinate c0 = input[i];
Coordinate c1 = input[i+1];
//Caso 1: out -> out
if(c0.x >= clipX && c1.x >= clipX){}
//Caso 2: in -> in
if(c0.x < clipX && c1.x < clipX)
output.push_back(c1);
double x = clipX;
double m = (c1.y-c0.y)/(c1.x-c0.x);
double y = m * (x-c0.x) + c0.y;
//Caso 3: in -> out
if(c0.x < clipX && c1.x >= clipX)
output.emplace_back(x,y);
//Caso 4: out -> in
if(c0.x >= clipX && c1.x < clipX){
output.emplace_back(x,y);
output.push_back(c1);
}
}
}
void MainWindow::addLine(GtkBuilder* builder){
LineDialog dialog(GTK_BUILDER(builder));
bool finish = false;
while(!finish){
if(dialog.run() == 1){
try{
Coordinates c;
c.emplace_back(dialog.getX1(), dialog.getY1());
c.emplace_back(dialog.getX2(), dialog.getY2());
Object* obj = _world->addLine(
dialog.getName(), dialog.getColor(), c);
_viewport->transformObj(obj);
addObjOnListStore(dialog.getName(), "Line");
gtk_widget_queue_draw(_mainWindow);
log("Nova reta adicionada.\n");
finish = true;
}catch(MyException& e){
log(e.what());
showErrorDialog(e.what());
}
}else
finish = true;
}
}
void PolygonDialog::getCoords(Coordinates& coords) const {
GtkTreeIter iter;
gboolean valid;
double x, y;
valid = gtk_tree_model_get_iter_first (m_model,
&iter);
if(!valid)
throw MyException("Adicione pelo menos uma coordenada.\n");
while(valid){
gtk_tree_model_get (m_model, &iter,
0, &x, 1, &y, -1);
coords.emplace_back(x, y);
valid = gtk_tree_model_iter_next (m_model,
&iter);
}
}