Topics

1

Network / UDP socket not sending packets.

« on: June 20, 2019, 11:12:48 pm »

I get error that packet ain't sent. With TCP this code worked.Things I've tried:
1)change port ::AnyPort
2)Use IP from hamachi with my friend
3)put debugging couts. After the first "while msg!=stop" loop it changes port and IP to 0 and 0000000000(Or so would seem)
4)Removing it from thread partially, *exclamation mark* partially fixed the problem, it worked 1 out of 10 times!
Help...I'll answer all questions quick.

sf::IpAddress hostIp = sf::IpAddress::getLocalAddress();
sf::UdpSocket udpSocket;
unsigned short port = 51234;
string recMsg ;
string msg;
void sendData(string msg);
sf::Thread secondThread(&sendData, msg);
int main() {
  udpSocket.bind(port);
  secondThread.launch();
while (msg != "stop") {
   
    if (udpSocket.receive(packet2, hostIp, port) != sf::Socket::Done)
      cout << "~~error receiving data" << endl;
        else {
                cout << "--data received" << endl;
                packet2 >> recMsg;
                if (recMsg != "")
                        cout << "Other user: " << recMsg << endl;
        }
  }

}
void sendData(string msg) {
  while (msg != "stop") {
    getline(cin, msg);
   
    packet << msg;

    if (udpSocket.send(packet, hostIp, port) != sf::Socket::Done)
      std::cout <<"~~Could not send data"<<endl;
}
 

2

General / Texture.update() is not working

« on: June 03, 2019, 08:00:43 pm »

It says Assertion failed: x + window.getSize().x <= m_size.x
 
Size and x\y are correct
It all breaks on last line. I need it for selection and copy/paste tool

        bufferRect.width = abs(curPos.x - point1.x);
        bufferRect.height = abs(curPos.y - point1.y);
        int width = bufferRect.width;
        int height = bufferRect.height;
        int x = bufferRect.left;
        int y = bufferRect.top;
        std::cout << "width is "<< bufferRect.width << std::endl;
        std::cout << "height is " << bufferRect.height << std::endl;
        std::cout << "left and top are " << bufferRect.left << " + " << bufferRect.top << std::endl;
       
        bufferTexture.create(width, height);
        bufferTexture.update(mainWindow,x ,y );
 

3

Graphics / Why I can't setTexture?

« on: May 31, 2019, 11:11:29 pm »

How can I fix it?

  sf::Texture pencilIcon;
  sf::RectangleShape testShape;
  testShape.setTexture(pencilIcon);

I know, it says about *texture, but I don't know how to pass it(setTexture(*pencilIcon) doesn't work)

[FIXED]

4

General / Can you loadFromImage to RenderTexture?

« on: May 28, 2019, 11:54:51 am »

image.create(windowWidth, windowHeight, sf::Color::White);
sf::RenderTexture canvas;
sf::IntRect area = sf::IntRect(0, 0, image.getSize.x, image.getSize.y);
canvas.getTexture().loadFromImage(image,area);

I need it so I can open and edit images.

5

General / Dotted line instead of normal

« on: May 27, 2019, 11:54:37 pm »

Hello fellas! I am working on Paint 2.0 project which is supposed to be simple yet WORKING graphics editor, using sfml. Yesterday I have encountered the problem which I still can't fix.
I am implementing Pencil tool, but instead of creating normal smooth line it draws dotted and separated ones.
At first, I just made it with drawPixel function but right now I am using Vertices to make lines based on the previous mouseMoved register. In both cases, I get the same scenario.
Here is the function call.

while (mainWindow.pollEvent(event)) {
      if (event.type == sf::Event::Closed)
        mainWindow.close();
      else if ((event.type == sf::Event::MouseMoved) &&
               sf::Mouse::isButtonPressed(
                   sf::Mouse::Left)) // MouseMoved and leftClickHeld
      {
        switch (currentTool) {
        case 0: {
          vecLine =
              drawPencil(mainWindow, currentColor,
                         sf::Mouse::getPosition(mainWindow), thickness, 0);
          break;
        }
        }
      } else if (event.type == sf::Event::MouseButtonPressed) {
        switch (currentTool) {
        case 0: {
          vecLine =
              drawPencil(mainWindow, currentColor,
                         sf::Mouse::getPosition(mainWindow), thickness, 1);
          break;
        }
        case 1: {
          vecLine = drawLine(mainWindow, currentColor,
                             sf::Mouse::getPosition(mainWindow));
          break;
        }
        }
 

And here is the function that draws lines

std::vector<std::pair<sf::Vertex, sf::Vertex>>
drawPencil(sf::RenderWindow &mainWindow, sf::Color color,
           sf::Vector2i currentPos, unsigned int thickness, int mode) {
  if (thickness == 0) {

    if (mode == 1) {
      line[0].position = sf::Vector2f(sf::Mouse::getPosition(mainWindow));
      line[1].position = sf::Vector2f(sf::Mouse::getPosition(mainWindow));
      line[0].color = color;
      line[1].color = color;

    } else {
      if (firstPoint) {
        line[0].position = sf::Vector2f(sf::Mouse::getPosition(mainWindow));
        line[1].position = sf::Vector2f(sf::Mouse::getPosition(mainWindow));
        line[0].color = color;
        line[1].color = color;
        firstPoint = false;
      } else {
        line[1].position = sf::Vector2f(sf::Mouse::getPosition(mainWindow));
        firstPoint = true;
        vecLine.push_back(std::make_pair(line[0], line[1]));
      }
    }
    return vecLine;
  } else {
  }
}

Int mode is to deny lines that could be drawn just by clicking and not dragging.

I suspect it's connected with MouseMoved update rate